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Double SC gaskets, no gaskets, gaskets and RTV, what do?!? (Intercooler) Vac Leak

01Blackgtp

01Blackgtp

New member
Fired this pig up and it ran fine several times, fired it up again and it has the loudest high pitched whistle I have ever heard. Clearly a vacuum leak around the snout side of the supercharger, confirmed with a dousing of carb cleaner on that side of the blower. rough idle, change with spray. Do I even bother with gaskets if they dont survive the dismantle. Or just squirt a tube of high temp grey or red RTV between all of the upper pieces and call it good? Or get 2 more new gaskets add RTV to them and re-samich them all together? I've properly blocked off the LIM to throttle body coolant passages. No EGR. and I am 99% sure there is no leak between the intercooler plates. the leak seems to be at the supercharger to intercooler plate.

I've seen a vac leak before around the snout side water tube before, and a pile of RTV fixed it. I hate to resort to the RTV all over everything method to fix the vac leak but it seems like that's the only option at this point. Is a vacuum leak at the intercooler a common thing?

I'm tearing it all apart again in like 7 hours. I hope I get at least a few opinions in this short time frame.
 


When I was running a SC intercooled setup, I just used grey silicon. Screw gaskets, especially garleaks from ZZP. 1 con to silicon is its a pain in the ass to get the thing apart again but with some pry tools and force itll pop.
 
I have no experience on this matter, but I have read that sseilop recommends using only grey permatex when installing an intercooler.
 
I no u have a vac leak as your saying. But u might have blocked off the pcv passage too. Take off the oil cap and see if it goes away. Just saying. But I mean that noise can come from that too
 
johntremell said:
I have no experience on this matter, but I have read that sseilop recommends using only grey permatex when installing an intercooler.
Click to expand...

same stuff I used when I sealed mine and it was good but it might take a couple tries to get it right.. op you hav any e85 stations f**k sealing and run corn lol

Sent from my LG-E980 using Tapatalk
 
just did
3 days ago its a hybrid phenolic style
cleaned an wired wheeled it some kept the lower metal gasket an used hight temp red under it over it an on top of the intercooler an took the bolts down but not tight just snug an let it set for 6 hours then tighten them an had no leaks also deleted the egr an pluged the egr inlet an changed out all my vacum hoses with heavy duty high temp silicone lines after noticing the old ruber ones were cracking
 


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