What is the best way to get a leak proof seal between the thermostat housing and aluminum intake? I've always had trouble with this. I'm installing a billet aluminum housing w/ O-ring this time around. Just wondered if anyone has had any success with this troublesome area. Thanks in advance.
Leaky Thermostat Housing...
- Thread starter Demon416
- Start date
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Longgone
John/68 Barracuda & Dart
If it was one of those chrome pieces from Mancini the best fix is to throw it away and use a factory piece or a billet piece like you have.
5258
Well-Known Member
Is it a chrome piece or factory?
MoparMuscleGuy
Still plays with cars.
Hello, Try Permatex Ultra Copper. It's great stuff:thumbup:.
hellion_locdogg
Slant Sickness
And do not OVER tighten it, it may be warped. Resurface it on some 600 grit in a figure 8 and see what it looks like.
Thanks Longgone. Have you used the billet housing yourself? Does it need sealant?
Longgone
John/68 Barracuda & Dart
I have not, but I've read good reviews about the billet piece. It requires no sealant. I've always used the factory pieces and have had no issues whatsoever.
Paladin06
Well-Known Member
Yep, I have billet housing with O-ring and a little Permatex Ultra Copper. Surface has to be clean and dry. Do not over tighten and let it set up over night. Mine has never leaked a single drop.
mattsmopars
Well-Known Member
I have also had the same issue with stock t-stat covers. I have found that it works better for me to use some sealant and let it set 24 hours before I add coolant to it.
Matt
Matt
340sFastback
Well-Known Member
I run the Mancini Racing billet housing with a thin film of sealant on both sides of gasket on my aluminum intake. Does not leak a drop.
I throw the o-ring away and fill the channel with RTV. Never had a leak.
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