Author Topic: Intake Sealant Question  (Read 955 times)

Offline daveh

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Intake Sealant Question
« on: June 09, 2016 - 10:31:00 AM »
I'm installing an aluminum intake into my stock 340 heads.  Do I need any sealant on any of those bolts? Do any of those holes go into the water jacket?  Thanks

Dave




Offline burdar

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Re: Intake Sealant Question
« Reply #1 on: June 09, 2016 - 11:34:54 AM »
No intake bolts go into water.  However, most of them are exposed to the valley area where there is a lot of oil film flying around.  If you don't use a sealer, oil "could" wick up the threads and pool on top of the intake.  I'd use a thread sealer to be safe.  :2cents:

Offline daveh

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Re: Intake Sealant Question
« Reply #2 on: June 09, 2016 - 11:54:38 AM »
Thanks

Offline daveh

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Re: Intake Sealant Question
« Reply #3 on: June 09, 2016 - 11:58:45 AM »
What are the torque specs on the intake 30 or 35 ft-lbs?

Offline wantone

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Re: Intake Sealant Question
« Reply #4 on: June 09, 2016 - 02:09:44 PM »
(O O {]{]{]||[}[}[} O O)
Want one?  Got one! ... finally

Offline Mopar Mitch

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Re: Intake Sealant Question
« Reply #5 on: June 09, 2016 - 02:22:10 PM »
Daveh -- make certain you clean and tap/chase all the threadings in the heads, as well as bolts, too.... will make installation a breeze.  None of the bolts enter coolant passages, but with the exclusion of the 4-outer bolts, the rest are exposed to internal oil mist... you really don't need any chemical applied other than light oil (I use a light spread of trans fluid or light-weight oil, or even silicone spray on the bolts... never any problems with leakage).

Be certain to use a dab of RTV at the 4-outer corners where the end seals and side rail gaskets intersect.

I used to be a Fel-Pro gasket engineer through the 70s-90s... I wrote the instructions that are within most of the FP gasket sets.
Autocross/road racers go in deeper... and come out harder!

See  MOPAR ACTION MAGAZINE, AUGUST 2006 ISSUE for featured article and details on my autocross T/A.