whats up with permatex Hylomar sealant?

Am I reading this thread right?

You guys are saying it's okay to not use a cam cover gasket and just hylomar or whatever and there's be no issues with leakage? Doesn't the fact the seal bore is machined round WITH the thickness of the gasket incorporated bother anyone? When I machined my cam covers for o-rings I recut the seal gland in the cam covers to facilitate this extra crush.

I didn't cut one of them far enough I thought. If you guys just slap on the cam covers wihtout gaskets and crush the seal and extra .02" and don't see any problems that's good to know ... (edit: but not necessarily good "to do")

 

No, you put the hylomar on the gasket!!

 

There is a great bodning agent readily avalible at any Subaru store. Its called 3bond. Subaru reccomends this for all engine assembly. We use it on Subaru motors both fuel injected and turbo. It never hardens but seals like crazy. Subaru suppies it for gluing both crankcase halves, cam boxes, both where there is excessive heat or just normal engine running temps. You can dissasemble parts 3 bonded together at anytime with little effort. It can be cleaned off without much difficulty. 3bond runs about $17.00 per tube and one tube should take care of an entire Ferrari motor. One thing to remember with any sealant, a little goes a long way. No need to slather it on and have it squeeze out of every seam. 3 bonds has worked for us for many years with no problem what so ever.

Howard
tr0768
1981 308gtsi
2003 maserati spyder
2 many brass era cars

 

All this seems fine but after scraping for 4 weekends on my valve covers& heads I am going to try the Hylomar. I want to go dry but do not want any leaks, the 1211 3 bond sealed fantastic for 8 years but do not want to repeat this agony over again. If it leaks well i know they will come off easy. has anyone who used this since their last post had any leaks???

Rob

I bought some hondabond but want to try the "racing" hylomar!!!

Rob

 

Why didn't anyone mention CAF4 which is what Ferrari uses?

 

Thanks for posting. I recall working on motorcycles a long time ago, the use of some sealant would 'glue' stuff together. Disassembly was a real chore! Another product that a buddy really liked and he claimed to be very easy to work with is Gaskacinch. It's got the 1940's bombshell on the label. I think that stuff was like a thin rubber cement? Anybody have input for use on Ferrari valve covers?