o rings

[dna9656]

Can anyone give me a spec on the o rings used between the intake manifold and the head?

[dingy]

They are 45mm dia. I don't know dia, but I can check tonight when I get home, if I remember!

Gary

[dna9656]

I took an o ring to NAPA, they measured it at 2 mm thick, Dingy says it's 45mm in Dia. He didn't say if that's ID or OD. NOBODY (except the STEALER They are getting $4.99 per) in this town has a o ring like that; not in Bremerton or Tacoma. So I called Granger, they got BUNA (Type of rubber has good resistance to gasoline) Cord Stock in 2 mm. you slice off the length you need and superglue it together. You get 10 feet for $3.08. That's a lot of manifold gaskets. By the calculator that's 22.2519685" for a set of 4 o rings or about 5 SETS of o rings for the carburetors. All for $3.08.

 

BTW I think my vacuum leak wasn't in the o rings, it was in the ALMOST loose rubber vacuum caps on the disabled YICS system. They aren't loose anymore and I get no more increase in rpm when I spray carb cleaner around the manifolds; top or bottom.

I still think the cord stock for O rings is worth looking into.

Check out this site: http://www.grainger.com/images/catalog/405/2990.pdf?concat=true&baseURL=http://www.grainger.com/components/catalog

Edited May 30, 2014 by dna9656