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Exhaust tube diameter
Posted by: zarfnober ()
Date: June 23, 2022 06:09AM

Anybody have the outside diameter of the small valve head exhaust tubes? I’m planning on building a mandrel bent crossover for my turbo, and want to use the 140 logs, but want to prevent any possible exhaust leaks at the tube/manifold. So looking at the size that clarks shows as the ID on the 140 packings, I was thinking that 1-1/4” OD exhaust tube could be cut to fit, and tacked on. Thoughts?

Rocco

Re: Exhaust tube diameter
Posted by: Lane66m ()
Date: June 23, 2022 07:56AM

Turbo heads use same exhast tubes and logs as the 80, 95, 102 & 110 engines.

Re: Exhaust tube diameter
Posted by: chris ()
Date: June 23, 2022 03:07PM

I want to say small valve heads have @1 3/16" OD on the exhaust tubes.

'66 Monza coupe
4 speed
140hp
Gardner, KS

Heart of America Corvair Owners Association

Re: Exhaust tube diameter
Posted by: zarfnober ()
Date: June 23, 2022 08:13PM

chris Wrote:
-------------------------------------------------------
> I want to say small valve heads have @1 3/16" OD on the exhaust tubes.

Thanks!

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