---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Wed 09/16/09: 16 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:18 AM - prop gov control cable (Dale Ensing) 2. 06:17 AM - O-320 Overheating on Climb Out (Ian) 3. 07:18 AM - Re: O-320 Overheating on Climb Out (Dale Ensing) 4. 07:52 AM - Re: O-320 Overheating on Climb Out (rv6n@optonline.net) 5. 08:16 AM - Re: O-320 Overheating on Climb Out (Knicholas2@aol.com) 6. 08:24 AM - Re: O-320 Overheating on Climb Out (Tim Bryan) 7. 09:21 AM - Re: O-320 Overheating on Climb Out (Tim Bryan) 8. 09:27 AM - Re: O-320 Overheating on Climb Out (David Cudney) 9. 09:54 AM - OLD RV-6 stuff for sale (John Veld) 10. 02:10 PM - Re: Rotary powered RV-8 Cooling test (Tracy Crook) 11. 03:49 PM - rv-8 Canopy latch (William Davis) 12. 05:52 PM - Louvers (rveighta@comcast.net) 13. 06:17 PM - Re: Louvers (Tracy Crook) 14. 06:50 PM - Re: Louvers (Charlie England) 15. 07:20 PM - Re: O-320 Overheating on Climb Out (jhnstniii@aol.com) 16. 10:29 PM - Re: Engine Hesitation (Linn Walters) ________________________________ Message 1 _____________________________________ Time: 04:18:51 AM PST US From: "Dale Ensing" Subject: RV-List: prop gov control cable Hey Matt, Did you ever get your prop govenor cable adjusted to your satisfaction? If so, how did you do it? Dale Ensing do not archive ----- Original Message ----- From: "Matt Dralle" Sent: Wednesday, September 16, 2009 1:22 AM Subject: RV-List: Re: Initial Baffle-To-Top-Cowling Fit... > > I just wanted to thank everyone for the great feedback on this baffling > cut-down procedure. I'm glad to hear that it wasn't just my > installation!! :-) > > I'll post some more pictures when I get things hacked down to size and > that oil cooler mounted. > > Hey, check out my newly registered URL for my RV-8 Building site: > > http://www.mattsrv8.com > > Matt Dralle > RV-8 #82880 N998RV > http://www.mattsrv8.com > Baffling and Oil Cooler... > > > At 07:00 PM 9/14/2009 Monday, you wrote: > >>Dear Listers, >> >>The RV-8's cowling done and fits like a glove. I started the baffling >>last night and its coming along nicely. The fit on the sides and back are >>very good considering the IO-390 installation (and the use of the IO-360 >>baffle kit). The front baffling is completely different, however, and I'm >>slogging through the custom fitting. >> >>But here's my question. I decided to put the top cowling on top of the >>baffling that I've got installed so far and I was shocked that the >>baffling appears to be a good 1 to 1.5" too tall!! Is this because of the >>IO-390 or is that just where Van's expects you to start in your >>"cutting-it-down-to-size" phase? That's a lot of snipping and fitting and >>snipping and fitting. I was expecting to have to trim some, but not over >>a inch... >> >>Also, it looks like the over-sized oil cooler is going to fit nicely on >>the rear baffle with only a little "modification". But I'm not sure if >>the back, upper corner is going to clear the cowling. Since the cowling >>is sitting over a inch high right now, I've got no way to really trial fit >>the oil cooler and check for cowling clearance until I trim the baffling >>down. Worst-case I could put a blister on the cowling for the rear, upper >>flange of the oil cooler, I suppose, but that's kind of hokey. There is >>room to move the oil cooler in towards the centerline about 1", but then >>the mount will no longer line up with the flange on the outboard edge and >>will require more modifications. >> >>Thoughts...? >> >>Attached are some pics. ( Digest viewers check >>http://forums.matronics.com ). >> >>Matt Dralle >>RV-8 #82880 N998RV >>http://www.mattsrv8.com >>Baffling and Oil Cooler... > > > ________________________________ Message 2 _____________________________________ Time: 06:17:54 AM PST US Subject: RV-List: O-320 Overheating on Climb Out From: Ian Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating engine. On climb out, at about 90kts the CHT will rise to 500 degrees F briefly and then settle down to about 375 in the cruise. This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler. The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of this cylinder. (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 3 _____________________________________ Time: 07:18:53 AM PST US From: "Dale Ensing" Subject: Re: RV-List: O-320 Overheating on Climb Out Ian, Suggest climbing @ 100 knots minimum. Don't overheat trying to get to coole r air which may not be that much cooler in the summer time. This is kind of like going faster to get to a gas station quicker when you are low on fuel. The fuel burn rate will go up in the attempt to not run ou t of gas. just my 2 cents worth of advise. Dale Ensing RV-6A ----- Original Message ----- From: Ian To: rv-list@matronics.com Sent: Wednesday, September 16, 2009 8:59 AM Subject: RV-List: O-320 Overheating on Climb Out Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating e ngine. On climb out, at about 90kts the CHT will rise to 500 degrees F br iefly and then settle down to about 375 in the cruise. This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler. The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of th is cylinder. (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 4 _____________________________________ Time: 07:52:45 AM PST US From: rv6n@optonline.net Subject: Re: RV-List: O-320 Overheating on Climb Out That seems awfully hot! I am no A&P so I don't remember the maximum allowed, as stated in the Lycoming manual, but I have my EFIS set to red-line at 400 degrees for my O-360. They often get to that temp on take-off on a hot day but I have never allowed them to get as high as yours are. I have been told that the cylinders start to get soft at 450 deg. I too had been flying a slow climb-out to keep the temps. down. Many builders have experienced the same problem and have installed various versions of a small baffle in front of # 1 cylinder in order to divert cooler air further back. If you do an archive search you will probably find a lot of discussions of potential problems and solutions. I intend to install the small baffle if I ever get to fly again. Bob ----- Original Message ----- From: Ian Subject: RV-List: O-320 Overheating on Climb Out > Hello List, > I have about 45 hours on my RV-9A and I've been tracking an > overheatingengine. On climb out, at about 90kts the CHT will > rise to 500 degrees > F briefly and then settle down to about 375 in the cruise. This > is on > cylinder # 3, with the other cylinders being 20 degrees or more > cooler.The engine came off a Cessna 172 and runs very well. > > The baffling is standard, and it seals well, especially in the > area of > this cylinder. (it's the simplest area of the baffles to check too). > > Is this temperature abnormal? > Does anyone have experience with the same problem? > For the moment I've just been reducing the angle of my climb to > increaseairspeed but I makes it take longer to get to cooler > air. > > Ian Brown, > Bromont, QC > RV-9A C-GOHM > > > ________________________________ Message 5 _____________________________________ Time: 08:16:40 AM PST US From: Knicholas2@aol.com Subject: Re: RV-List: O-320 Overheating on Climb Out I had the same problem with my 0-320 E2D that came out of a Cessna 172. Not only would the CHTs get dangerously high, but the engine would occasionally "hic-up". Very scary when you are in the clouds at 8000 feet. As it turns out, the air intake dynamics in a C172 called for a much leaner running carb than that needed for the high air flow RV. I want to give proper credit here, as my help came from Mr. Bart Lalonde (spelling?) from a British Columbia engine rebuilder whose name escapes me right now... (Sorry Bart!) With Bart's help, he shipped me a different carb jet that allows the engine to run more rich. It only took me a couple of hours of work and the difference was amazing. Now my CHT's rarely go above 450 even on a hot day. Plus, the annoying "hic-up" went away. I hope this helps. Kim Nicholas Auburn, WA RV9A 350 hours. In a message dated 9/16/2009 6:19:14 A.M. Pacific Daylight Time, ixb@videotron.ca writes: Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating engine. On climb out, at about 90kts the CHT will rise to 500 degrees F briefly and then settle down to about 375 in the cruise. This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler. The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of this cylinder. (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 6 _____________________________________ Time: 08:24:56 AM PST US From: "Tim Bryan" Subject: RE: RV-List: O-320 Overheating on Climb Out Ian, That is way too hot. Reduce your climb out angle to 110 which should put the nose right on the horizon anyway for visibility. Then you need to find what is needed to cool it down. I went over all my baffle install to find any leaks or blow by areas. There were a couple of small ones but nothing major. Then I found in the front where the air inlet ramps are the air could get around and into the low pressure side. I blocked those off. I then added the louvers to the bottom and had some more success. To this point it has been cumulative success to get my climb out temps to around 420. I was never much above 450 and 500 is probably doing damage to your engine. My airplane is an RV-6 with O-360 A1A normally aspirated, constant speed prop. As was previously mentioned, there is lots of reading in the Archives about this stuff but I would do my best not to let it get that hot any more. Tim Bryan RV-6 Flying N616TB over 120 hours now From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Ian Sent: Wednesday, September 16, 2009 7:59 AM Subject: RV-List: O-320 Overheating on Climb Out Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating engine. On climb out, at about 90kts the CHT will rise to 500 degrees F briefly and then settle down to about 375 in the cruise. This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler. The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of this cylinder. (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 7 _____________________________________ Time: 09:21:15 AM PST US From: "Tim Bryan" Subject: RE: RV-List: O-320 Overheating on Climb Out Bart is with Aero Sport Power in Kamloops BC. 1-250-376-6213 Tim Bryan RV-6 Flying N616TB over 120 hours now From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Knicholas2@aol.com Sent: Wednesday, September 16, 2009 10:10 AM Subject: Re: RV-List: O-320 Overheating on Climb Out I had the same problem with my 0-320 E2D that came out of a Cessna 172. Not only would the CHTs get dangerously high, but the engine would occasionally "hic-up". Very scary when you are in the clouds at 8000 feet. As it turns out, the air intake dynamics in a C172 called for a much leaner running carb than that needed for the high air flow RV. I want to give proper credit here, as my help came from Mr. Bart Lalonde (spelling?) from a British Columbia engine rebuilder whose name escapes me right now... (Sorry Bart!) With Bart's help, he shipped me a different carb jet that allows the engine to run more rich. It only took me a couple of hours of work and the difference was amazing. Now my CHT's rarely go above 450 even on a hot day. Plus, the annoying "hic-up" went away. I hope this helps. Kim Nicholas Auburn, WA RV9A 350 hours. In a message dated 9/16/2009 6:19:14 A.M. Pacific Daylight Time, ixb@videotron.ca writes: Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating engine. On climb out, at about 90kts the CHT will rise to 500 degrees F briefly and then settle down to about 375 in the cruise. This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler. The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of this cylinder. (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 8 _____________________________________ Time: 09:27:53 AM PST US From: David Cudney Subject: Re: RV-List: O-320 Overheating on Climb Out An air dam infront of the #1 cylinder is often needed particularly with the older baffle kits Mine os about 3/4 " high and runs from the ramp base to cover the lower edge of the exposed fins on the #1 cylinder head. I had to experiment several times with the height of the "air dam" until the temperature of the #1&3 cyliners was balanced. Dave@RAL Sent from my iPhone On Sep 16, 2009, at 8:24 AM, "Tim Bryan" wrote: Ian, That is way too hot. Reduce your climb out angle to 110 which should put the nose right on the horizon anyway for visibility. Then you need to find what is needed to cool it down. I went over all my baffle install to find any leaks or blow by areas. There were a couple of small ones but nothing major. Then I found in the front where the air inlet ramps are the air could get around and into the low pressure side. I blocked those off. I then added the louvers to the bottom and had some more success. To this point it has been cumulative success to get my climb out temps to around 420. I was never much above 450 and 500 is probably doing damage to your engine. My airplane is an RV-6 with O-360 A1A normally aspirated, constant speed prop. As was previously mentioned, there is lots of reading in the Archives about this stuff but I would do my best not to let it get that hot any more. Tim Bryan RV-6 Flying N616TB over 120 hours now From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Ian Sent: Wednesday, September 16, 2009 7:59 AM Subject: RV-List: O-320 Overheating on Climb Out Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating engine. On climb out, at about 90kts the CHT will rise to 500 degrees F briefly and then settle down to about 375 in the cruise. This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler. The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of this cylinder. (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 9 _____________________________________ Time: 09:54:32 AM PST US From: John Veld Subject: RV-List: OLD RV-6 stuff for sale I'm no longer working on this project and I need to get rid of it!... in Kalamazoo, MI. I would prefer to have it picked up as opposed to crating/shipping.... These are from before pre-punched kits.. I have an Old tail kit thats 90% assembled.... but I needed to fix some stuff that i'm not happy with... $300.00 Partially assembled wing kit with Phlogiston spars... all sheet metal parts are there, may be a hardware shortage... but i have the control, fuel, and air line hardware including a flop tube... also have plans/ manual, & some rvators....... asking $1500.00 BOTH KITS $1650.00 It's all been in the basement awhile and needs cleaning up, but it's all structurally sound.... reply via email jcveld@mac.com or phone 269 267-2509..... john ________________________________ Message 10 ____________________________________ Time: 02:10:12 PM PST US Subject: RV-List: Re: Rotary powered RV-8 Cooling test From: Tracy Crook Thanks for all the encouragement guys. Here's an update on the testing. Been thinking over what to do about the cooling on the 20B rotary powered RV-8. The indications are that I'm getting too much pressure under the cowl but that was only a guess. Without doing a number of time consuming pressure surveys or chopping up the cowl there was no way to be sure it was not something else like too small oil cooler and radiator, inlet diffusers not working as well as I had hoped, inlet shape not right (they had very sharp lips which might be causing separation) or some other unknown. Time is limited before I leave on vacation and I really needed to know the answer before I do. So, last night I made the decision to fly the -8 one more time - This time Without the cowl on. Wish there was someone around to get a pix, must have looked pretty strange. Secured anything that might get blown loose with tie wraps and did the deed. Whoo Hoo! Oil temp 147, coolant temp 161. This on a hot day (92 deg OAT). With the cowl on, they never went below 200 and hovered around 210 most of the time at low throttle. They went up rapidly with more throttle. Obvious conclusion is that I need a better path for the air to leave the cowl. Have read with interest the results of some Lycoming RVs with high oil temps that fixed the problem with louvers (on bottom?) of cowl. Some say they worked great, others had less than good results so not sure that is the answer but ordered a set if nothing else occurs to me. The airplane felt a little draggier , down about 15 MPH at the low throttle setting I used for test so this should be a worst case test. The wheel pants and main gear intersection fairings are also off. Did some brief full throttle climbs and temps stayed under control, oil never exceeding 160 F. Climb is awesome with a deck angle so high it was uncomfortable. Was looking hard at temps so did not note the ROC but it was more than anything else I've flown. My 13B powered RV-4 goes 2500 FPM on a standard day. Tracy Crook ________________________________ Message 11 ____________________________________ Time: 03:49:19 PM PST US From: William Davis Subject: RV-List: rv-8 Canopy latch RV-8 Builders I have a few of the RV-8 Canopy Latches left. I am unable to manufacture any more. When these are gone, these are gone. I would like to close out this project, so am offering them at the special close out price of $20 + $2 S&H. For full details on this device, see http://home.hiwaay.net/~sbuc/ journal/rv8-latch.html Best regards Bill Davis ________________________________ Message 12 ____________________________________ Time: 05:52:47 PM PST US From: rveighta@comcast.net Subject: RV-List: Louvers I guess I started the latest thread on louvers, so let me throw my two cent s in: I installed them on my 8A after experiencing high oil temps. Prior to the louvers, I was running 225 or so on a hot day. Now, I rarely see in excess of 190. So, then I built an RV8 and having similar temperature issues, I installed a pair of louvers in=C2-it as well. =C2-Same results, oil temps went down dramatically. The only problem with both the planes was getting the oil tem ps HIGH enough in winter (I solved that by making blanks to install between the inside of the cowl and the louvers). So, I can only say what worked for me. Maybe louvers won't work for you. Walt ________________________________ Message 13 ____________________________________ Time: 06:17:04 PM PST US Subject: Re: RV-List: Louvers From: Tracy Crook Excellent! Direct before & after results with all else being the same is the best kind of data. I'd be interested in exactly where you mounted the louvers. I've been assuming that on an RV-8 they would go on either side of the cooling duct 'trough' on the lower cowl. Is that where you put them? I'm assuming you used a pair of the Avery type louvers? I'll be happy to deal with the low temperatures in winter. Tracy Crook On Wed, Sep 16, 2009 at 8:51 PM, wrote: > I guess I started the latest thread on louvers, so let me throw my two > cents in: I installed them on my 8A after experiencing > > high oil temps. Prior to the louvers, I was running 225 or so on a hot day. > Now, I rarely see in excess of 190. So, then I built > > an RV8 and having similar temperature issues, I installed a pair of louvers > in it as well. Same results, oil temps went down > > dramatically. The only problem with both the planes was getting the oil > temps HIGH enough in winter (I solved that by making > > blanks to install between the inside of the cowl and the louvers). > > > So, I can only say what worked for me. Maybe louvers won't work for you. > > > Walt > > * > > * > > ________________________________ Message 14 ____________________________________ Time: 06:50:30 PM PST US From: Charlie England Subject: Re: RV-List: Louvers Tracy, Have you seen the stuff on the CAFE web site? http://cafefoundation.org/v2/main_home.php Click the 'research' tab, then 'cafe reports', then 'local flow I, II, & III. II discusses louvers & 'bluff bodies'. Charlie Tracy Crook wrote: > Excellent! Direct before & after results with all else being the same > is the best kind of data. > > I'd be interested in exactly where you mounted the louvers. I've been > assuming that on an RV-8 they would go on either side of the cooling > duct 'trough' on the lower cowl. Is that where you put them? I'm > assuming you used a pair of the Avery type louvers? > > I'll be happy to deal with the low temperatures in winter. > > Tracy Crook > > On Wed, Sep 16, 2009 at 8:51 PM, > wrote: > > I guess I started the latest thread on louvers, so let me throw my > two cents in: I installed them on my 8A after experiencing > > high oil temps. Prior to the louvers, I was running 225 or so on a > hot day. Now, I rarely see in excess of 190. So, then I built > > an RV8 and having similar temperature issues, I installed a pair > of louvers in it as well. Same results, oil temps went down > > dramatically. The only problem with both the planes was getting > the oil temps HIGH enough in winter (I solved that by making > > blanks to install between the inside of the cowl and the louvers). > > > > So, I can only say what worked for me. Maybe louvers won't work > for you. > > > > Walt > ________________________________ Message 15 ____________________________________ Time: 07:20:05 PM PST US Subject: Re: RV-List: O-320 Overheating on Climb Out From: jhnstniii@aol.com Ian--In addition to the other suggested fixes, you may consider moving the upper ramp in front of #1 forward.??The flow through the inlet in front of #1 is pinched because the right cylinder bank is forward of the left cylinder bank.? You'd have to cut it out, trim it, and re-glass it farther forward.? Put your hand into?each inlet and you will see what I mean.? LeRoy Johnston/David White?RV6-A "Esperanza" 220 hrs.??? -----Original Message----- From: Ian Sent: Wed, Sep 16, 2009 8:59 am Subject: RV-List: O-320 Overheating on Climb Out Hello List, I have about 45 hours on my RV-9A and I've been tracking an overheating engine.?? On climb out, at about 90kts the CHT will rise to 500 degrees F briefly and then settle down to about 375 in the cruise.? This is on cylinder # 3, with the other cylinders being 20 degrees or more cooler.? The engine came off a Cessna 172 and runs very well. The baffling is standard, and it seals well, especially in the area of this cylinder.? (it's the simplest area of the baffles to check too). Is this temperature abnormal? Does anyone have experience with the same problem? For the moment I've just been reducing the angle of my climb to increase airspeed but I makes it take longer to get to cooler air. Ian Brown, Bromont, QC RV-9A C-GOHM ________________________________ Message 16 ____________________________________ Time: 10:29:37 PM PST US From: Linn Walters Subject: Re: RV-List: Engine Hesitation I'm wading through a whole slew of emails after a trip, so this may be co vered. But ..... Clean out your shop-vac really good, and hook the hose up to blow, not suck. Place the hose in the intake and seal with some rags. Turn on the vacuum (that's now a pump!) and spray liberally around the intake system with soapy water. Linn rveighta@comcast.net wrote: > Mike, I'm not sure what you mean by checking for an intake leak. How do > you go about doing that? > > > > Walt > > > ----- Original Message ----- > From: "Mike Robertson" > To: "rv list" > Sent: Monday, September 14, 2009 10:21:26 AM GMT -05:00 US/Canada Eastern > Subject: RE: RV-List: Engine Hesitation > > Walt, > > have you tried checking for an intake leak. It can cause exactly what > you are talking about. > > Mike Robertson > > > ------------------------------------------------------------------------ > > Date: Mon, 14 Sep 2009 12:56:45 +0000 > From: rveighta@comcast.net > To: rv-list@matronics.com > Subject: RV-List: Engine Hesitation > > I have a Lycoming IO-360 in my RV8A which exhibits an engine hesitancy > or "stumble" that is proving very difficult to diagnose. > This problem shows up when taxiing back in after a flight, and in an RPM > range of 750-1300. In flight there is no evidence of a stumble, > and no stumble at initial start up, taxiing out for take off or during > run-up. In other words, the engine only exhibits this behavior when it > is warm. > > I have talked to some very knowledgable folks and have tried several > things: (1) Reset the idle mixture, (2) removed and cleaned the > servo finger screen, (3) removed the nozzles and placed them in a cup of > acetone, which was then placed in a sonic cleaner for about > an hour. After the nozzles were reinstalled, I test flew the plane and > the stumble was gone. However, a subsequent test flight revealed > that although the engine was running much smoother, an occasional > stumble was still there. > > Additional facts: > > Oil temps are normal (around 180 deg F) > Compression test is normal (all cylinders mid 70's) > I'm using a Catto 3 blade prop > > Any and all suggestions you may have will be greatly appreciated. > > Thanks, > > Walt Shipley > > * > > 3D============================================ > 3D============================================ > 3D============================================ > 3D============================================ > > * > > > ------------------------------------------------------------------------ > Your E-mail and More On-the-Go. Get Windows Li/' target='_new'>Sign up now. > > * > > t=_blank>http://www.matronics.com/Navigator?RV-List > p://forums.matronics.com > blank>http://www.matronics.com/contribution > > * > > * > > > * ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv-list Browse Digests http://www.matronics.com/digest/rv-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.