Intake Manifold Bolt Washer Thickness
Thread Starter
Instructor
Joined: Feb 2023
Posts: 159
Likes: 31
From: Benicia, CA
Intake Manifold Bolt Washer Thickness
I'm getting ready to re-install my intake manifold after cleaning it up and needing to install new gaskets.
I bought a set of ARP SS bolts and four of the eight come with washers that are slightly thinner.
Where on the manifold should these be placed?
Thanks!
I bought a set of ARP SS bolts and four of the eight come with washers that are slightly thinner.
Where on the manifold should these be placed?
Thanks!
Melting Slicks
Joined: Apr 2021
Posts: 2,705
Likes: 2,151
From: Minnesota
I just bought the same ones, 434-2101 correct?
I believe they go on the front four holes, to gain more access around the coolant crossover.
I believe they go on the front four holes, to gain more access around the coolant crossover.
Last edited by Piersonpie; Dec 2, 2024 at 07:05 PM.
Thread Starter
Instructor
Joined: Feb 2023
Posts: 159
Likes: 31
From: Benicia, CA
Thread Starter
Instructor
Joined: Feb 2023
Posts: 159
Likes: 31
From: Benicia, CA
I had a second thought could the thinner washers be used at both the forward and rear (I'd say aft, but that might seem too nautical) most mounting points because those are blind threads? All the other mounting points open to the oil galley below.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
The four outside corner holes are blind holes.
You do not want a bolt to bottom out there.
So use the thicker washer.
Smaller diameter washers?
Any place interference from the casting is present.
Don't forget thread sealant.
You do not want a bolt to bottom out there.
So use the thicker washer.
Smaller diameter washers?
Any place interference from the casting is present.
Don't forget thread sealant.
Last edited by HeadsU.P.; Dec 3, 2024 at 03:43 PM.
Thread Starter
Instructor
Joined: Feb 2023
Posts: 159
Likes: 31
From: Benicia, CA
Thread sealant? DEFINITELY!! That"s the main reason I started this. Five of the eight bolts would ooze oil until the engine warmed up.
Thanks
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