intake swap
#1
intake swap
i'm in the process off swapping the intake and need to know what is the best way to clean the old rtv and gasket material?
When sealing it back up i will be using permatex the right stuff..whats the best process with this?
When sealing it back up i will be using permatex the right stuff..whats the best process with this?
#2
TECH Addict
To clean it use a brass brush then clean with alcohol or brake cleaner, do this on both surfaces. To apply, just put a nice thick bead on the front and rear surface of the block. Install intake and the sealant should squeeze out. The gap is about 1/8" or so, so you want that bead of RTV pretty thick before you install the intake so it can squeeze out. After you torque the intake down let sit to dry for at least an hour before running the engine.
#4
TECH Addict
Yeah that's the safe bet. RTV is fully cured when you can no longer smell it. Adding heat (about 200°F) can reduce cure times from 24 hrs to less than 2. I let mine air dry for about 15-45 minutes typically then let the heat finish it off. But the safest bet is to let it sit for 24hrs in ambient conditions, I'm impatient.
#5
Village Troll
iTrader: (2)
I've had more leaks start this way than not. Oil is intrusive enough, along with engine vacuum, to weaken a bead that hasn't fully cured. As already stated, because the bead is so thick the best thing to do is to let it sit for a full day before starting.
#6
TECH Veteran
iTrader: (1)
To make that part of the job easier, I have 2 long allen screws, that I install in the front 2 bolt holes on the left side of the engine, before I drop the manifold in place. They act as "guide pins", so I get the manifold in place properly, the first time. After the manifold is set, I can unscrew them, and install the regular bolts.
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#11
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