---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Wed 10/08/03: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:21 PM - just out of curiosity (Aucountry@aol.com) 2. 06:30 PM - LoPresti nose bowl (Aucountry@aol.com) 3. 08:42 PM - Tip of the Week - spark plug sockets (Gil Alexander) 4. 10:15 PM - Re: Tip of the Week - spark plug sockets (linn walters) 5. 10:38 PM - Re: Tip of the Week - spark plug sockets (Gil Alexander) ________________________________ Message 1 _____________________________________ Time: 06:21:04 PM PST US From: Aucountry@aol.com Subject: TeamGrumman-List: just out of curiosity --> TeamGrumman-List message posted by: Aucountry@aol.com If anyone out there happens to have the carb air box off a Tiger, could you do me a favor? Try to install the airbox 180 degrees out of ordinary. let me know if it fits. Thanks Gary If anyone out there happens to have the carb air= box off a Tiger, could you do me a favor?  Try to install the airbox=20= 180 degrees out of ordinary.  let me know if it fits.

Thanks
Gary ________________________________ Message 2 _____________________________________ Time: 06:30:18 PM PST US From: Aucountry@aol.com Subject: TeamGrumman-List: LoPresti nose bowl --> TeamGrumman-List message posted by: Aucountry@aol.com As luck would have it, a lady called the other day and asked if I could look at her plane because it was running way over 450 degrees (JPI 700) on climb out on cyls #3 and #4. She has only owned the plane (a 76) for a short time. When she showed up, lo-and-behold, it had a LoPresti nose bowl on it. She told me that she had the LoPresti nose bowl installed to lower her CHT. After flying it for 20 minutes, she flew it to Fox Field so I could look at it. Now, I don't know who did the baffles, but, they are WAY bad. There are parts missing.... well, let's just say, it's not so good. One thing I noticed on the LoPresti nose bowl, it's going to be difficult to properly seal the engine to the nose bowl in the corners by #1 and #2 cylinders. Also, the metal baffles on this one look like they were beat into submission with a hammer. I don't know what it is with mechanics/owners who install baffles and bend the hell out of them to get then into place. All it does is ruin the baffle. Also, please, don't use a ratchet on plugs #3 and #4. Get one of the adapters that let you use an 11/16 wrench on a socket. You can remove the plugs in less time and it doesn't f%@k-up the metal baffle. Gary As luck would have it, a lady called the other d= ay and asked if I could look at her plane because it was running way over 45= 0 degrees (JPI 700) on climb out on cyls #3 and #4.  She has only owne= d the plane (a 76) for a short time.  When she showed up, lo-and-behol= d, it had a LoPresti nose bowl on it.  She told me that she had the Lo= Presti nose bowl installed to lower her CHT.  After flying it for 20 m= inutes, she flew it to Fox Field so I could look at it.  Now, I don't=20= know who did the baffles, but, they are WAY bad.  There are parts miss= ing.... well, let's just say, it's not so good.  One thing I noticed o= n the LoPresti nose bowl, it's going to be difficult to properly seal the en= gine to the nose bowl in the corners by #1 and #2 cylinders. 

Also, the metal baffles on this one look like they were beat into submission= with a hammer.  I don't know what it is with mechanics/owners who ins= tall baffles and bend the hell out of them to get then into place.  Al= l it does is ruin the baffle.

Also, please, don't use a ratchet on plugs #3 and #4.  Get one of the=20= adapters that let you use an 11/16 wrench on a socket.  You can remove= the plugs in less time and it doesn't f%@k-up the metal baffle.

Gary ________________________________ Message 3 _____________________________________ Time: 08:42:30 PM PST US From: Gil Alexander Subject: TeamGrumman-List: Tip of the Week - spark plug sockets --> TeamGrumman-List message posted by: Gil Alexander Guys, Another option... 1. Buy Autolite (Unison) spark plugs - the preferred REM37BY. 2. Take a 7/8 deep socket and trim it's length to 2 3/4 inches (mine was 3 1/4 inches) In concert with the shorter Autolite plugs, this cut down socket can now be used with a regular handle and still fit down inside the baffles on #3 and #4 cylinders. No special tools needed, I just used cut-off wheel in my trusty Dremel. just make sure your deep socket has it's flutes going down deep into the socket so it will grip after you cut it down. My Craftsman deep socket was OK, but a cheapo Chinese socket was not modifiable. ...hope this helps someone..... gil in Tucson... making a new #2 cylinder baffle that was screwed up by previous baffle work... ...and I'm still fouling the lower plugs - even with REM37BY's ...:^( At 09:29 PM 10/8/2003 -0400, you wrote: >Also, please, don't use a ratchet on plugs #3 and #4. Get one of the >adapters that let you use an 11/16 wrench on a socket. You can remove >the plugs in >less time and it doesn't f%@k-up the metal baffle. > >Gary Guys,
      Another option...

1.  Buy Autolite (Unison) spark plugs - the preferred REM37BY.
2.  Take a  7/8 deep socket and trim it's length to 2 3/4 inches (mine was 3 1/4 inches)

      In concert with the shorter Autolite plugs, this cut down socket can now be used with a regular handle and still fit down inside the baffles on #3 and #4 cylinders.

      No special tools needed, I just used cut-off wheel in my trusty Dremel.  just make sure your deep socket has it's flutes going down deep into the socket so it will grip after you cut it down.  My Craftsman deep socket was OK, but a cheapo Chinese socket was not modifiable.

        ...hope this helps someone.....

        gil in Tucson...
making a new #2 cylinder baffle that was screwed up by previous baffle work...
...and I'm still fouling the lower plugs - even with REM37BY's ...:^(


At 09:29 PM 10/8/2003 -0400, you wrote:


Also, please, don't use a ratchet on plugs #3 and #4.   Get one of the
adapters that let you use an 11/16 wrench on a socket.   You can remove the plugs in
less time and it doesn't f%@k-up the metal baffle.

Gary
________________________________ Message 4 _____________________________________ Time: 10:15:18 PM PST US From: linn walters Subject: Re: TeamGrumman-List: Tip of the Week - spark plug sockets --> TeamGrumman-List message posted by: linn walters Gil Alexander wrote: >--> TeamGrumman-List message posted by: Gil Alexander > > >Guys, > Another option... > >1. Buy Autolite (Unison) spark plugs - the preferred REM37BY. >2. Take a 7/8 deep socket and trim it's length to 2 3/4 inches (mine was >3 1/4 inches) > > In concert with the shorter Autolite plugs, this cut down socket can >now be used with a regular handle and still fit down inside the baffles on >#3 and #4 cylinders. > > No special tools needed, I just used cut-off wheel in my trusty >Dremel. just make sure your deep socket has it's flutes going down deep >into the socket so it will grip after you cut it down. My Craftsman deep >socket was OK, but a cheapo Chinese socket was not modifiable. > > ...hope this helps someone..... > > gil in Tucson... >making a new #2 cylinder baffle that was screwed up by previous baffle work... >...and I'm still fouling the lower plugs - even with REM37BY's ...:^( > Fouling with what? REM37BY's won't help with oil ...... but will help with lead fouling. But then so will agressive leaning. :-D . Linn ________________________________ Message 5 _____________________________________ Time: 10:38:08 PM PST US From: Gil Alexander Subject: Re: TeamGrumman-List: Tip of the Week - spark plug sockets --> TeamGrumman-List message posted by: Gil Alexander Linn ...Sorry .... I should have said - lead fouling. The top plugs are REM40 (or maybe REM38, I need to check) and near perfect, the new REM37BY bottom plugs are lead fouled in 30 hrs. You are right, I think I need to lean more aggressively.... I only monitor #4 for CHT/EGT, and I guess I listened to too many horror stories of burning up exhaust valves. On the vacation trip we just took (25 hrs in 2 weeks) I leaned to peak rpm, and then pushed in 2 clicks. Perhaps I should run at peak rpm?? Before I pulled the plugs, I had a dynamic prop balance check, I didn't think the new plugs would foul that quickly. Balance was within spec. at 0.12, and no weights were added. ...gil A PS I have a PowerFlow exhaust installed. Engine is 1998 Lyc. O/H with 470 TTE At 01:16 AM 10/9/2003 -0400, you wrote: >--> TeamGrumman-List message posted by: linn walters > >Gil Alexander wrote: > > >--> TeamGrumman-List message posted by: Gil Alexander > > > > > > >Guys, > > Another option... > > > >1. Buy Autolite (Unison) spark plugs - the preferred REM37BY. > >2. Take a 7/8 deep socket and trim it's length to 2 3/4 inches (mine was > >3 1/4 inches) > > > > In concert with the shorter Autolite plugs, this cut down socket can > >now be used with a regular handle and still fit down inside the baffles on > >#3 and #4 cylinders. > > > > No special tools needed, I just used cut-off wheel in my trusty > >Dremel. just make sure your deep socket has it's flutes going down deep > >into the socket so it will grip after you cut it down. My Craftsman deep > >socket was OK, but a cheapo Chinese socket was not modifiable. > > > > ...hope this helps someone..... > > > > gil in Tucson... > >making a new #2 cylinder baffle that was screwed up by previous baffle > work... > >...and I'm still fouling the lower plugs - even with REM37BY's ...:^( > > >Fouling with what? REM37BY's won't help with oil ...... but will help >with lead fouling. But then so will agressive leaning. :-D . >Linn > > Linn  ...Sorry .... I should have said - lead fouling. 

The top plugs are REM40 (or maybe REM38, I need to check) and near perfect, the new REM37BY bottom plugs are lead fouled in 30 hrs.

You are right, I think I need to lean more aggressively.... I only monitor #4 for CHT/EGT, and I guess I listened to too many horror stories of burning up exhaust valves.  On the vacation trip we just took (25 hrs in 2 weeks) I leaned to peak rpm, and then pushed in 2 clicks.
Perhaps I should run at peak rpm??

Before I pulled the plugs, I had a dynamic prop balance check, I didn't think the new plugs would foul that quickly. 
Balance was within spec. at 0.12, and no weights were added.

         ...gil A

PS  I have a PowerFlow exhaust installed.  Engine is 1998 Lyc. O/H with 470 TTE

At 01:16 AM 10/9/2003 -0400, you wrote:
--> TeamGrumman-List message posted by: linn walters <lwalters2@cfl.rr.com>

Gil Alexander wrote:

>--> TeamGrumman-List message posted by: Gil Alexander <gilalex@earthlink.net>
>
>
>Guys,
>       Another option...
>
>1.  Buy Autolite (Unison) spark plugs - the preferred REM37BY.
>2.  Take a  7/8 deep socket and trim it's length to 2 3/4 inches (mine was
>3 1/4 inches)
>
>       In concert with the shorter Autolite plugs, this cut down socket can
>now be used with a regular handle and still fit down inside the baffles on
>#3 and #4 cylinders.
>
>       No special tools needed, I just used cut-off wheel in my trusty
>Dremel.  just make sure your deep socket has it's flutes going down deep
>into the socket so it will grip after you cut it down.  My Craftsman deep
>socket was OK, but a cheapo Chinese socket was not modifiable.
>
>         ...hope this helps someone.....
>
>         gil in Tucson...
>making a new #2 cylinder baffle that was screwed up by previous baffle work...
>...and I'm still fouling the lower plugs - even with REM37BY's ...:^(
>
Fouling with what?    REM37BY's won't help with oil ...... but will help
with lead fouling.  But then so will agressive leaning. :-D .
Linn


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