blow by temp fix
#1820450
05/06/15 07:14 PM
05/06/15 07:14 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
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I took my challenger to the track monday for the first time since i bought it a few weeks ago and it is pushing a bit of smoke out of the exhaust on one bank at high rpm. It has good oil pressure and sounds fine, makes pretty good power, unfortunately i haven't got a lot of time to mess with it at the moment, so wondered if there's anything i can stick in there to stop it smoking untill i get time to pull it out. I intend to do a comp test in the next week or so just to verify the problem or not ? Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: WILD BILL]
#1820851
05/07/15 05:36 AM
05/07/15 05:36 AM
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deaks
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I thought it was valve stem seals on decel and rings on accel ? I have three other cars, one i'm in the middle of doing, my Dart is next and the challenger will have to come after that.
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: deaks]
#1820950
05/07/15 11:26 AM
05/07/15 11:26 AM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
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Sadly there isn't a miracle solution that will fix leaky rings.
If you don't find an intake gasket leaking then the only thing you can do is rering it ...
running up my post count some more .
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Re: blow by temp fix
[Re: deaks]
#1821056
05/07/15 02:15 PM
05/07/15 02:15 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
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I'm not trying to cure it, i'm trying to reduce it, till i get round to fixing it in the winter. If it was intake surely it would be white smoke ?
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: deaks]
#1821077
05/07/15 02:41 PM
05/07/15 02:41 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
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Well, you didn't tell us what color the smoke is.
If it's dark, it's fuel. But only blowing smoke out of one side doesn't indicate fuel as intake manifolds are either single plane, mostly without divider plates, or dual plane and they are nearly without exception, one side of the carb feeds two on right and two on left.
If it's bluish-gray and smells like oil, it's oil. It could be one broken ring, which is more likely than the rings on only one side going bad. It could also be an intake manifold leak, in which case you should be able to tell which one is leaking by looking at spark plugs. Actually either one of those would foul one spark plug.
If it's pure white it's coolant and you have a head gasket problem. I've had experience with unknowingly running an engine with a warped head for miles , middle of the night, and the burnt antifreeze seized the pistons. While I saved enough money to overhaul the engine, the acid from the burnt antifreeze attacked the cylinder walls and made a myriad of pits, a little over 0.010" deep.
You will get better answers from investigation and logic than you will by shotgunning tests at the engine. In most cases the engine'll tell you the answer.
JohnRR is mostly right, most of the scenarios I've outlined above will not be fixed by a bottle or two of Wynn's Motor Honey.
R.
Last edited by dogdays; 05/07/15 02:43 PM.
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Re: blow by temp fix
[Re: dogdays]
#1821141
05/07/15 04:26 PM
05/07/15 04:26 PM
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Posts: 3,210 robin hood country
deaks
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I didn't see the smoke as it was going down the strip at the time, someone suggested it was oil smoke but that could be a guess and it was only doing it at high rpm, car runs perfect, took it out yesterday but didn't give it any rpm because the place and the weather didn't allow that. Going back to the track with it in a couple of weeks, then taking my Dart out 3 wks after that if i get the glass doors mounted in time. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: dogdays]
#1821228
05/07/15 06:42 PM
05/07/15 06:42 PM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
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Senior Management
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Well, you didn't tell us what color the smoke is. What kind of engine?
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: blow by temp fix
[Re: deaks]
#1821247
05/07/15 07:15 PM
05/07/15 07:15 PM
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Posts: 3,210 robin hood country
deaks
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440, hyd cam, ported 906 heads, victor int, 850 holley.
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: deaks]
#1821811
05/08/15 01:32 PM
05/08/15 01:32 PM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
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I'm not trying to cure it, i'm trying to reduce it, till i get round to fixing it in the winter. If it was intake surely it would be white smoke ? What color is the smoke ? Whether oil gets into the cylinders via the rings , valve seals or intake gasket it's all going to be blue. If you have white smoke that is water and it's coming from a crack in the head, the block, or the head gasket. There is no water in the intake of a big block mopar ... but you know that ...
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Re: blow by temp fix
[Re: deaks]
#1821852
05/08/15 02:35 PM
05/08/15 02:35 PM
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Posts: 3,210 robin hood country
deaks
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If it was water, surely it would be smoking all the time, it's only doing it under hard acceleration. I'm not sure what colour as i was running in a bracket but someone i know suggested it was oil smoke.
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: D_C]
#1822683
05/09/15 02:38 PM
05/09/15 02:38 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Do you have a Pan Evac? Sort of a poor mans crankcase vacuum pump. It can reduce blow-by and improve ring sealing by reducing internal crankcase pressure. I currently have Pan Evacs on my '79 Jeep and my '71 Charger. DC any idea how much vac it is generating? I want to do this myself.
live every 24 hour block of time like it's your last day on earth
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Re: blow by temp fix
[Re: deaks]
#1822745
05/09/15 04:08 PM
05/09/15 04:08 PM
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Posts: 3,210 robin hood country
deaks
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Sorry i didn't reply DC, there's an 8 hr difference between us and i've been busy working today. I've tried nothing yet but i may have the exhaust evac parts in the garage. Here's a pic of one of the plugs, oil on the threads but dry and biscuit brown everywhere else. Mick
Last edited by deaks; 05/09/15 05:04 PM.
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: blow by temp fix
[Re: deaks]
#1822755
05/09/15 04:22 PM
05/09/15 04:22 PM
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Joined: Jan 2003
Posts: 13,596 md
mopars4ever
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DC any idea how much vac it is generating? I want to do this myself. I put one on my 360. Mine doesn`t generate much vac but it is enough to keep oil from covering the intake and valve covers. It really depends on the exhaust and back pressure on how much vacuum you get. Also it depends on where you install it and the angle of the pipe.
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Re: blow by temp fix
[Re: deaks]
#1822805
05/09/15 05:25 PM
05/09/15 05:25 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
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Some interesting options there and a lot of info i didn't know.
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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