---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Mon 05/09/05:14 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:28 AM - Fuel PSI Erronius Readings... (Jeff Linebaugh) 2. 04:54 AM - Re: High fuel presure (A. Dennis Savarese) 3. 05:58 AM - Re: High fuel presure (Jim Bernier) 4. 09:49 AM - Cylinder head temperatures (Richard Goode) 5. 09:59 AM - Cylinder Porting / flowing on M14P (Dee L. Conger) 6. 02:20 PM - Re: Cylinder head temperatures (Bitterlich GS11 Mark G) 7. 02:46 PM - Re: Cylinder head temperatures (Roger Doc Kemp) 8. 02:53 PM - Re: Cylinder head temperatures (Vance Cochrane) 9. 05:58 PM - Cylinder Porting (cpayne@joimail.com) 10. 06:37 PM - Re: Cylinder head temperatures (Roger Doc Kemp) 11. 08:13 PM - Springfield Air Rendezvous Pictures (Jeff Linebaugh) 12. 10:09 PM - Bob Murphy (ByronMFox@aol.com) 13. 10:13 PM - Yak Owners (ByronMFox@aol.com) 14. 11:06 PM - Compressor Unloader for Yak 55M (Royden Heays) ________________________________ Message 1 _____________________________________ Time: 12:28:13 AM PST US From: "Jeff Linebaugh" Subject: Yak-List: Fuel PSI Erronius Readings... --> Yak-List message posted by: "Jeff Linebaugh" Kelley, I had the exact same indication problem in my CJ a few years back....swapped the indicators front to back, and the problem followed---turned out to be the indicator.... Jeff Linebaugh Nanchang CJ-6 Memphis, TN ________________________________ Message 2 _____________________________________ Time: 04:54:35 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: High fuel presure --> Yak-List message posted by: "A. Dennis Savarese" You may just have a "flapper" in the replacement fuel hose affecting the fuel pressure. Dennis ----- Original Message ----- From: "Kelley Monroe" Subject: Re: Yak-List: High fuel presure > --> Yak-List message posted by: "Kelley Monroe" > > I have not swapped yet. I am thinking I have a air bubble in the line. > Because this problem didn't appear until I change fuel hoses. > ----- Original Message ----- > From: "A. Dennis Savarese" > To: > Subject: Re: Yak-List: High fuel presure > > >> --> Yak-List message posted by: "A. Dennis Savarese" > >> >> Have you swapped the instruments front and rear to see if the readings >> follow the instruments? >> Dennis >> ----- Original Message ----- >> From: "Kelley Monroe" >> To: "Yak List" >> Subject: Yak-List: High fuel presure >> >> >> > --> Yak-List message posted by: "Kelley Monroe" >> > >> > I have a CJ 285hp that is indicating .7 for fuel pressure on the rear >> > panel and .4 on the front panel at any power setting. Any thoughts? >> > >> > >> > >> >> > > > ________________________________ Message 3 _____________________________________ Time: 05:58:23 AM PST US From: "Jim Bernier" Subject: Re: Yak-List: High fuel presure --> Yak-List message posted by: "Jim Bernier" You have one line carring fuel pressure to a manifold that goes to the sending units. Thios line should have a 1 mm restricter along the line to dampin out any pulsations. I would suggest swapping out the electrical leads of the sending units. It's a 5 minute job that will eliminate the sending units as the problem. If the problem stays, the the receiving units or gauges are at fault. Your hose isn't the problem unless its leaking to the outside. If the hose was blocked off, not likely, then your gauges would be reading zero. Jim >>> kelmonroe@comcast.net 05/08/05 4:50 PM >>> --> Yak-List message posted by: "Kelley Monroe" I have a CJ 285hp that is indicating .7 for fuel pressure on the rear panel and .4 on the front panel at any power setting. Any thoughts? ________________________________ Message 4 _____________________________________ Time: 09:49:42 AM PST US From: "Richard Goode" Subject: Yak-List: Cylinder head temperatures --> Yak-List message posted by: "Richard Goode" Cylinder Head Temperatures To correct what seems to be quite widely held misunderstandings: =C3=98 Maximum continuous is 220=CB=9AC. =C3=98 RED LINE is 240=CB=9AC. Prolonged operation at 230/240=CB=9A C will significantly affect engine life with warped cylinder bores etc.=20 =C3=98 If engines are running hot, then magneto timing etc should be checked. =C3=98 IMPORTANTLY, cooling on the M14P is also achieved through fuel. A hot running engine should have a smaller compensating jet fitted =E2=80=93 very few owners seem to understand this, and either complain about engines being too hot, or too cold, in which case they are using unnecessary fuel! Also note that the Russian temperature gauges are only accurate to 10=CB=9A C, if that. Some can be out by 20=CB=9A C, and in addition the gauge is not necessarily showing the hottest cylinder! Richard Goode Richard Goode Aerobatics Rhodds Farm Lyonshall Herefordshire HR5 3LW United Kingdom Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com dangerous content by the http://www.invictawiz.com MailScanner, and is believed to be clean. ________________________________ Message 5 _____________________________________ Time: 09:59:08 AM PST US Subject: Yak-List: Cylinder Porting / flowing on M14P From: "Dee L. Conger" --> Yak-List message posted by: "Dee L. Conger" Anyone had their M-14 cylinders ported and flow-matched? Any improvements from doing this? I'm thinking about pulling my jugs off and am looking for a good shop to do the work. Dee L. Conger (858) 754-3010 Direct This email and any attachments thereto may contain private, confidential, and privileged material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. ________________________________ Message 6 _____________________________________ Time: 02:20:29 PM PST US From: Bitterlich GS11 Mark G Subject: RE: Yak-List: Cylinder head temperatures --> Yak-List message posted by: Bitterlich GS11 Mark G That said, I personally would find it quite helpful to know where this compensating jet is located, and how to access it, and lastly, where to obtain a jet "kit" to allow me to adjust as necessary. Can you help Richard? Mark Bitterlich -----Original Message----- From: Richard Goode [mailto:richard.goode@russianaeros.com] Subject: Yak-List: Cylinder head temperatures --> Yak-List message posted by: "Richard Goode" Cylinder Head Temperatures To correct what seems to be quite widely held misunderstandings: =C3=98 Maximum continuous is 220=CB=9AC. =C3=98 RED LINE is 240=CB=9AC. Prolonged operation at 230/240=CB=9A C will significantly affect engine life with warped cylinder bores etc. =C3=98 If engines are running hot, then magneto timing etc should be checked. =C3=98 IMPORTANTLY, cooling on the M14P is also achieved through fuel. A hot running engine should have a smaller compensating jet fitted =E2=80=93 very few owners seem to understand this, and either complain about engines being too hot, or too cold, in which case they are using unnecessary fuel! Also note that the Russian temperature gauges are only accurate to 10=CB=9A C, if that. Some can be out by 20=CB=9A C, and in addition the gauge is not necessarily showing the hottest cylinder! Richard Goode Richard Goode Aerobatics Rhodds Farm Lyonshall Herefordshire HR5 3LW United Kingdom Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com dangerous content by the http://www.invictawiz.com MailScanner, and is believed to be clean. ________________________________ Message 7 _____________________________________ Time: 02:46:32 PM PST US From: "Roger Doc Kemp" Subject: RE: Yak-List: Cylinder head temperatures --> Yak-List message posted by: "Roger Doc Kemp" Richard, Can you translate what you ment by =C3=98, =CB=9A C,and =E2=80=93. I think we have a computer program mismatch. Therefore, we are getting the message garbled in tranlation between the two. Or is it just because you Brits drive on the wrong side for the road? It's a joke,ok? Before someone takes it personal. Doc > [Original Message] > From: Richard Goode > To: YAK USA LIST > Date: 5/9/2005 11:49:01 AM > Subject: Yak-List: Cylinder head temperatures > > --> Yak-List message posted by: "Richard Goode" > > Cylinder Head Temperatures > > > To correct what seems to be quite widely held misunderstandings: > > > =C3=98 Maximum continuous is 220=CB=9AC. > > =C3=98 RED LINE is 240=CB=9AC. Prolonged operation at 230/240=CB=9A C will significantly affect engine life with warped cylinder bores etc. > > =C3=98 If engines are running hot, then magneto timing etc should be checked. > > =C3=98 IMPORTANTLY, cooling on the M14P is also achieved through fuel. A hot running engine should have a smaller compensating jet fitted =E2=80=93 very few owners seem to understand this, and either complain about engines being too hot, or too cold, in which case they are using unnecessary fuel! > > > Also note that the Russian temperature gauges are only accurate to 10=CB=9A C, if that. Some can be out by 20=CB=9A C, and in addition the gauge is not necessarily showing the hottest cylinder! > > > Richard Goode > > Richard Goode Aerobatics > Rhodds Farm > Lyonshall > Herefordshire > HR5 3LW > United Kingdom > > Tel: +44 (0) 1544 340120 > Fax: +44 (0) 1544 340129 > www.russianaeros.com > > > dangerous content by the http://www.invictawiz.com > MailScanner, and is believed to be clean. > > ________________________________ Message 8 _____________________________________ Time: 02:53:47 PM PST US From: Vance Cochrane Subject: Re: Yak-List: Cylinder head temperatures --> Yak-List message posted by: Vance Cochrane It's an encoding of a bullet point dot and the degree symbol into ascii. -- Vance Cochrane Email: vec@ecochrane.com President Phone: 415-412-3062 Cochrane Consulting, Inc. Fax: 415-651-9364 PO Box 854 Belmont, CA 94002 Web: http://www.ecochrane.com On May 9, 2005, at 2:45 PM, Roger Doc Kemp wrote: > --> Yak-List message posted by: "Roger Doc Kemp" > > > Richard, > Can you translate what you ment by =C3=98, =CB=9A C,and =E2=80=93. I > think > we have a computer program mismatch. Therefore, we are getting the > message > garbled in tranlation between the two. Or is it just because you Brits > drive on the wrong side for the road? It's a joke,ok? Before someone > takes > it personal. > Doc > > >> [Original Message] >> From: Richard Goode >> To: YAK USA LIST >> Date: 5/9/2005 11:49:01 AM >> Subject: Yak-List: Cylinder head temperatures >> >> --> Yak-List message posted by: "Richard Goode" > >> >> Cylinder Head Temperatures >> >> >> To correct what seems to be quite widely held misunderstandings: >> >> >> =C3=98 Maximum continuous is 220=CB=9AC. >> >> =C3=98 RED LINE is 240=CB=9AC. Prolonged operation at >> 230/240=CB=9A > C will significantly affect engine life with warped cylinder bores etc. >> >> =C3=98 If engines are running hot, then magneto timing etc >> should be > checked. >> >> =C3=98 IMPORTANTLY, cooling on the M14P is also achieved through > fuel. A hot running engine should have a smaller compensating jet > fitted > =E2=80=93 very few owners seem to understand this, and either complain > about engines being too hot, or too cold, in which case they are using > unnecessary fuel! >> >> >> Also note that the Russian temperature gauges are only accurate to > 10=CB=9A C, if that. Some can be out by 20=CB=9A C, and in addition > the > gauge is not necessarily showing the hottest cylinder! >> >> >> Richard Goode >> >> Richard Goode Aerobatics >> Rhodds Farm >> Lyonshall >> Herefordshire >> HR5 3LW >> United Kingdom >> >> Tel: +44 (0) 1544 340120 >> Fax: +44 (0) 1544 340129 >> www.russianaeros.com >> >> >> dangerous content by the http://www.invictawiz.com >> MailScanner, and is believed to be clean. >> >> > > ________________________________ Message 9 _____________________________________ Time: 05:58:09 PM PST US From: "cpayne@joimail.com" Subject: Yak-List: Cylinder Porting --> Yak-List message posted by: "cpayne@joimail.com" Not sure what the quantitative data is but I got "good" results from Polishing the Intake/Exhaust ports. Don't forget to "match" the upper plenum of the carb to the blower opening, a little smoothing helps here too. My feeling is that the Intake work will yield the greatest value for the effort. Of course, nobody does just One thing when seeking efficient operation...the results are best shown by carefully taking performance data at the recommended power settings, BEFORE and After the mod. Craig Payne ________________________________ Message 10 ____________________________________ Time: 06:37:17 PM PST US From: "Roger Doc Kemp" Subject: Re: Yak-List: Cylinder head temperatures --> Yak-List message posted by: "Roger Doc Kemp" Thanks for enlightening me. Have a good night. Doc > [Original Message] > From: Vance Cochrane > To: > Date: 5/9/2005 4:53:36 PM > Subject: Re: Yak-List: Cylinder head temperatures > > --> Yak-List message posted by: Vance Cochrane > > It's an encoding of a bullet point dot and the degree symbol into ascii. > -- > Vance Cochrane Email: vec@ecochrane.com > President Phone: 415-412-3062 > Cochrane Consulting, Inc. Fax: 415-651-9364 > PO Box 854 Belmont, CA 94002 Web: http://www.ecochrane.com > On May 9, 2005, at 2:45 PM, Roger Doc Kemp wrote: > > > --> Yak-List message posted by: "Roger Doc Kemp" > > > > > > Richard, > > Can you translate what you ment by =C3=98, =CB=9A C,and =E2=80=93. I > > think > > we have a computer program mismatch. Therefore, we are getting the > > message > > garbled in tranlation between the two. Or is it just because you Brits > > drive on the wrong side for the road? It's a joke,ok? Before someone > > takes > > it personal. > > Doc > > > > > >> [Original Message] > >> From: Richard Goode > >> To: YAK USA LIST > >> Date: 5/9/2005 11:49:01 AM > >> Subject: Yak-List: Cylinder head temperatures > >> > >> --> Yak-List message posted by: "Richard Goode" > > > >> > >> Cylinder Head Temperatures > >> > >> > >> To correct what seems to be quite widely held misunderstandings: > >> > >> > >> =C3=98 Maximum continuous is 220=CB=9AC. > >> > >> =C3=98 RED LINE is 240=CB=9AC. Prolonged operation at > >> 230/240=CB=9A > > C will significantly affect engine life with warped cylinder bores etc. > >> > >> =C3=98 If engines are running hot, then magneto timing etc > >> should be > > checked. > >> > >> =C3=98 IMPORTANTLY, cooling on the M14P is also achieved through > > fuel. A hot running engine should have a smaller compensating jet > > fitted > > =E2=80=93 very few owners seem to understand this, and either complain > > about engines being too hot, or too cold, in which case they are using > > unnecessary fuel! > >> > >> > >> Also note that the Russian temperature gauges are only accurate to > > 10=CB=9A C, if that. Some can be out by 20=CB=9A C, and in addition > > the > > gauge is not necessarily showing the hottest cylinder! > >> > >> > >> Richard Goode > >> > >> Richard Goode Aerobatics > >> Rhodds Farm > >> Lyonshall > >> Herefordshire > >> HR5 3LW > >> United Kingdom > >> > >> Tel: +44 (0) 1544 340120 > >> Fax: +44 (0) 1544 340129 > >> www.russianaeros.com > >> > >> > >> dangerous content by the http://www.invictawiz.com > >> MailScanner, and is believed to be clean. > >> > >> > > > > > > ________________________________ Message 11 ____________________________________ Time: 08:13:00 PM PST US From: "Jeff Linebaugh" Subject: Yak-List: Springfield Air Rendezvous Pictures --> Yak-List message posted by: "Jeff Linebaugh" Here is a link to some great shots of the "Red Stars" flying with "Team Red" at the recent Springfield Air Rendezvous. They were taken by Troy Bates, a professional photographer that Terry Calloway brought just for the occasion! ..Check them out! http://troybates.com/ Jeff Linebaugh ________________________________ Message 12 ____________________________________ Time: 10:09:08 PM PST US From: ByronMFox@aol.com Subject: Yak-List: Bob Murphy --> Yak-List message posted by: ByronMFox@aol.com Bob, my e-mails to are failing to go through. Check to see if I got on your spam list. In any event, RPA flags with the female crew chief are backordered. I do, however, have flags without the girl -- far more appropriate for a man of your position in the community. ...Blitz Byron M. Fox The RPA Store 80 Milland Drive Mill Valley, CA 94941 415-307-2405 Cells Days 415-380-0907 Home Eves ________________________________ Message 13 ____________________________________ Time: 10:13:05 PM PST US From: ByronMFox@aol.com Subject: Yak-List: Yak Owners --> Yak-List message posted by: ByronMFox@aol.com In anticipation of summer, I have a fresh supply of red, white or blue Yak logo polo shirts on hand. Check the RPA On-line Store. ...Blitz ________________________________ Message 14 ____________________________________ Time: 11:06:09 PM PST US From: "Royden Heays" Subject: Yak-List: Compressor Unloader for Yak 55M --> Yak-List message posted by: "Royden Heays" For the M14P, who supplies unloaders for the line from the compressor to the snot valve, and of those, which is preferred. Royden Heays