Cylinder #2 more fragile ?
06-20-2005 | 11:55 AM
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From: France (78)
Cylinder #2 more fragile ?
Hi guys,
A friend of mine is racing with a genuine 944 Turbo Cup, 18" wheels and slicks (235 front, 265 rear) and broke his motor twice... and still because of a lack of lubrification on the #2 cylinder apparently..
Can you give him some advices for avoiding this when i will rebuild the engine. Is there some modifications to do to be sure there won't be any other lubrification problem ?
Maybe modifications on the oil sump and/or the crankcase but what to do ?
Thanks
06-20-2005 | 12:01 PM
Jane Bond 007Lifetime Rennlist Member
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From: North of the GTA
Perp drill the crank. Oil gets held in the galley of the crank and in hard turns it's worse on the #2.
06-20-2005 | 12:07 PM
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From: France (78)
Quote:
Originally Posted by MichelleJD
Perp drill the crank. Oil gets held in the galley of the crank and in hard turns it's worse on the #2.
You mean... like on these pictures ?
Are there any downside effects to do that ?
06-20-2005 | 12:31 PM
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From: Marietta, NY
Hmmmm,,,,not a 944 part....what is it?
Chris White
06-20-2005 | 12:43 PM
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From: France (78)
Quote:
Originally Posted by Chris White
Hmmmm,,,,not a 944 part....what is it?
Chris White
As far as i know, it is a 944 part (951 crankcase if i'm not wrong)
modified for a better lubrification
06-20-2005 | 12:45 PM
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No, that's a 928 32V engine the guy was showing us.
Anyway it's way too large for being a 944's.
The side effect is that you won't need to replace bearings preventively every ~120k miles anymore.
06-20-2005 | 01:20 PM
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From: France (78)
Quote:
Originally Posted by Thom
No, that's a 928 32V engine the guy was showing us.
Oops, my fault sorry
(i didn't understand anything with the german speaking)
06-20-2005 | 05:13 PM
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Wenn man ein Porsche fährt soll man ein bisschen Deutsch verstehen und sprechen
06-20-2005 | 05:34 PM
Jane Bond 007Lifetime Rennlist Member
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From: North of the GTA
Quote:
Originally Posted by Asarus
You mean... like on these pictures ?
Are there any downside effects to do that ?
No; the crank, not the girdle.
06-20-2005 | 06:31 PM
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From: France (78)
Quote:
Originally Posted by MichelleJD
No; the crank, not the girdle.
Do you have some pictures of what to do ?
06-20-2005 | 07:50 PM
Jane Bond 007Lifetime Rennlist Member
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From: North of the GTA
At 90 degrees on each side from the oil galley you see, you should have a machine shop drill a hole. The added galleys allow the oil out of the crank to better supplt the rod bearings.
Attached Images
06-20-2005 | 07:55 PM
Jane Bond 007Lifetime Rennlist Member
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From: North of the GTA
I found this pic - it shows two of the galleys at 90 degrees in the far left cylinder (#1) :
Attached Images
06-20-2005 | 11:34 PM
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From: Just CA Now :)
People seems to try:
cross-drilling the crank
installing baffles in the oil pan
running oil level a bit higher than full
using an Accusump
06-21-2005 | 03:49 AM
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From: Kalifornyuh
Asarus:
Is it the cyl. that is not getting enough lubrication or the rod seizing on #2 journal? There are different solutions for each.
06-21-2005 | 08:49 AM
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From: Alexandria, VA
i am going to:
Install a baffle
Install an accusump