Yamabond usage on the oil pan gasket
11-10-2003, 03:46 PM
#1
Instructor
Thread Starter
Yamabond usage on the oil pan gasket
When installing a new oil pan gasket, I am aware that you are supposed to use gasket sealer (Porsche recommends Silastic RTV 730 sealant ... @ $100) on ONLY the corners of the gasket.
Does the same thing hold true if you use Yamabond instead? If one applied it on both sides of the full length of the gasket, would it be likely that the oil pan gasket might "blow out"?
Does the same thing hold true if you use Yamabond instead? If one applied it on both sides of the full length of the gasket, would it be likely that the oil pan gasket might "blow out"?
11-10-2003, 07:34 PM
#5
Instructor
Thread Starter
This is what my brother did - applied it all around the gasket (not just the corners) and the gasket 'blew out' in the middle of its travel, exhaust side after running for a while (oil is now leaking out).
We suspected that it’s because of the over application of Yamabond.
The last engine he rebuilt was a 944 S2 engine (same gasket). He used Loctite Hylomar also around the entire gasket sealing surfaces but this worked fine - no leaks several years later.
Anyone else used Hylomar for this application?
We suspected that it’s because of the over application of Yamabond.
The last engine he rebuilt was a 944 S2 engine (same gasket). He used Loctite Hylomar also around the entire gasket sealing surfaces but this worked fine - no leaks several years later.
Anyone else used Hylomar for this application?
11-10-2003, 07:41 PM
#6
Three Wheelin'
I used Hylomar at the corners only and no leaks so far. Tom Charlesworth recommends to install the oil pan gasket dry, with just the sealant in the corners.
Yamabond 4 is a sealant for surfaces that do not have a gasket, similar to the orange loctite. Honda has a similar product too.
Yamabond 4 is a sealant for surfaces that do not have a gasket, similar to the orange loctite. Honda has a similar product too.
11-10-2003, 08:13 PM
#7
Burning Brakes
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Hylomar, rtv, liquid teflon anything will do in the corners. I would like to know why some engines blow gaskets out the side, and some don't. We know it's not crankcase pressure unless it's on brand new rings(1st hour or two). Thats keiths idea he might be right. I'm about ready to try liquid nails on a test car just to see what happens.
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11-10-2003, 08:30 PM
#8
Instructor
Thread Starter
Well, that is exactly what my brother did - replaced the piston rings! So it is possible that the high crankcase pressure actually forced the gasket out the side?
I guess that the slickness caused by the application of Yamabond (in places where it should not be) reduced the friction to the point the clamping pressure between the block and oil pan was not enough to retain the gasket…
I guess that the slickness caused by the application of Yamabond (in places where it should not be) reduced the friction to the point the clamping pressure between the block and oil pan was not enough to retain the gasket…
11-10-2003, 09:18 PM
#10
Rennlist Member
Same procedure and results as SKI after 3 seasons. Dry as a bone.
Alan C.
Alan C.
11-10-2003, 11:56 PM
#11
Addict
Rennlist Member
Rennlist Member
I have less than %2 leakdown, and did that gasket several times (7 I believe), w/all sorts of sealants. It would blow out from the side (at seemingly random places), the last gasket I did is still holding on after several months and thousands of miles, and the procedure was, as above, dry w/sealant only at the corners (and very little of it).
Ahmet
Ahmet
