My recently rebuilt Type IV is leaking oil between the cylinders and the case. This engine is now a 2.4 L (was 1.7) with no gaskets or shims between the cylinders and the case -- common practice. So what is the best sealant and best method of application?
I use Loctite 518 there. Applied with an acid brush. If it squeezes out the sides, you used WAY too much.
that^
that said i know fat uses 1211
hylamar blue
old tried and true permatex aviation. Jake uses it in his video, but that was admittedly a long time ago .
I used the lower cylinder sealing rings on the few type IV's I've built. Could be the sealing surface of the case has dropped a little, I could see where sealant would be beneficial.
Yamabond 4 is my engine-builder pal's choice and notes that in his race experience, it holds up in cylinder to case applications that see 10K rpms regularly. This goo is a silicone based liquid gasket that fills gaps on a flange surface and prevents leaks. When cured, this product forms a rubber-like body that resists heat and seals joints subjected to high temperature. It is gear and engine oil resistant, Yamabond 4 Motorsports sets in 60 minutes so you have time to work with it if chasing rings etc.
Attached thumbnail(s)
Thanks for all the advice. Yamabond it will be
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)