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Nigel Tufnel Wannabe
 
tchudy's Avatar
 
Join Date: Sep 2011
Location: Channahon, Il
Posts: 216
944T Engine Expert

Looking for someone in the Chicago area that knows the 944T engine very well. I just completed a rebuild and have an issue I am concerned about...slight lifter tapping. I've read tons of info on the subject but I want someone to have a listen and advise. Willing to pay for a service call just for advice. Can trailer the car if I have to.

I am located in Channahon, IL, just off of I55.

Thanks...Tom

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1986 Porsche 944 Turbo, Sapphire Metallic. Nice restoration. I'm done spending $$$$ on this car. Ha,ha...it'll never end!
Old 06-15-2014, 10:21 AM
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Join Date: Apr 2014
Location: Cleveland, Ohio
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Oil pressure normal? Pressure relief alligned properly?
Old 06-15-2014, 04:25 PM
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Join Date: Oct 2007
Location: Northern, CA
Posts: 2,213
Garage
I would use a oil treatment called sea foam. Just buy a pint pour in engine and drive normal for 100 miles. And by normal I mean Porsche normal rev it to redline here and there, drive it on some twisters a real road test.....
The ticking should go away as it sounds like several instances I have had after having a cam tower off a lifters sitting for a long time then rebuild motor goes back together and the ticking just seems like 1 or 2 lifters won't go away until I get it real hot and flog the engine awhile.
Old 06-15-2014, 09:42 PM
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Nigel Tufnel Wannabe
 
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Join Date: Sep 2011
Location: Channahon, Il
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Yes, oil pressure normal, updated OPRV aligned on install. Lifters were very slightly used (like a couple hundred miles). I soaked in Marvel Mystery Oil for a couple of months and then pumped them up before install. They seemed okay, but I have no previous experience with these lifters. Sounds like just one of them tapping.
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1986 Porsche 944 Turbo, Sapphire Metallic. Nice restoration. I'm done spending $$$$ on this car. Ha,ha...it'll never end!
Old 06-16-2014, 04:33 AM
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Join Date: Jun 2010
Location: AZ
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Could be an exhaust leak. Had a suspected lifter noise on our '88 924S SE, and turned out to be an exhaust leak out the manifold on the #4. Check your nuts!!
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1989 944 Turbo currently a garage queen
1988 924S ugly dented track car
1983 944 Track Car, Ford F350 diesel
2004 Jeep Wrangler Unlimited - Built!
2004 Winnebago Vectra track day motel
Old 06-16-2014, 05:57 AM
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Nigel Tufnel Wannabe
 
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Join Date: Sep 2011
Location: Channahon, Il
Posts: 216
Definitely not an exhaust leak making the noise...not to say that I don't have one...I think there is a small one south of the header I'll need to check out.

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1986 Porsche 944 Turbo, Sapphire Metallic. Nice restoration. I'm done spending $$$$ on this car. Ha,ha...it'll never end!
Old 06-16-2014, 06:29 AM
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