#5 and #8 lean cyl
Thread Starter
Racer
Joined: Feb 2010
Posts: 362
Likes: 10
From: nashville tn
#5 and #8 lean cyl
I have two cylinders running lean, 327 hyd roller w/ performer intake, RPM heads and eldelbrock carb, pulled headers off and there is no carbon residue at all in the exhuast tubes for cylinder's 5 & 8 there clean as can be. I suspected a leaking intake manifold, double checked it for clearance and fit no problem and re-installed. This did not cure the problem. plugs are a light grey to brown,except 5&8 there a little more to the white side. compression ck's out from 1,3,7, @ 180psi 5,4,6, @165psi 2,8 @ 170psi , injected a little motor oil in low cyl's and all ran up to 185 psi. Engine runs good when warmed up but does have a strange mis prior to fully warming up around 3000 rpm- sounds simulair to a darn studder box at the strip. So I am stumped ?
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
I have two cylinders running lean, 327 hyd roller w/ performer intake, RPM heads and eldelbrock carb, pulled headers off and there is no carbon residue at all in the exhuast tubes for cylinder's 5 & 8 there clean as can be. I suspected a leaking intake manifold, double checked it for clearance and fit no problem and re-installed. This did not cure the problem. plugs are a light grey to brown,except 5&8 there a little more to the white side. compression ck's out from 1,3,7, @ 180psi 5,4,6, @165psi 2,8 @ 170psi , injected a little motor oil in low cyl's and all ran up to 185 psi. Engine runs good when warmed up but does have a strange mis prior to fully warming up around 3000 rpm- sounds simulair to a darn studder box at the strip. So I am stumped ?
Racer
Joined: Jul 2001
Posts: 483
Likes: 3
From: d.d.o quebec
Hi wombavette,
I would love to pick at your experience if you don't mind. My 79's (AC car) Is always blowing HOT at the feet or up above if set that way, the slides are set at the coldest setting. It seems to be worst when driving, worst even with one window open and most worst when both windows are open. This is heat that roast my feet. Any suggestions?
I would love to pick at your experience if you don't mind. My 79's (AC car) Is always blowing HOT at the feet or up above if set that way, the slides are set at the coldest setting. It seems to be worst when driving, worst even with one window open and most worst when both windows are open. This is heat that roast my feet. Any suggestions?
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Hi wombavette,
I would love to pick at your experience if you don't mind. My 79's (AC car) Is always blowing HOT at the feet or up above if set that way, the slides are set at the coldest setting. It seems to be worst when driving, worst even with one window open and most worst when both windows are open. This is heat that roast my feet. Any suggestions?
I would love to pick at your experience if you don't mind. My 79's (AC car) Is always blowing HOT at the feet or up above if set that way, the slides are set at the coldest setting. It seems to be worst when driving, worst even with one window open and most worst when both windows are open. This is heat that roast my feet. Any suggestions?
So in short, you have to control the air distribution, the hot water, and the intake air.
That will give you a start.
Racer
Joined: Jul 2001
Posts: 483
Likes: 3
From: d.d.o quebec
Hi wombavette,
I would love to pick at your experience if you don't mind. My 79's (AC car) Is always blowing HOT at the feet or up above if set that way, the slides are set at the coldest setting. It seems to be worst when driving, worst even with one window open and most worst when both windows are open. This is heat that roast my feet. Any suggestions?
I would love to pick at your experience if you don't mind. My 79's (AC car) Is always blowing HOT at the feet or up above if set that way, the slides are set at the coldest setting. It seems to be worst when driving, worst even with one window open and most worst when both windows are open. This is heat that roast my feet. Any suggestions?
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Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Not necessarily the mesh itself. On the RH side behind that mesh down in the cowl, there is a flap that opens and closes.
