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Pollution red v8 heads

Started by _imperial engines_ , Dec 17 2017 05:44 AM

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#1 _imperial engines_

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Posted 17 December 2017 - 05:44 AM

Hi all,

I'm starting a build for limited class racing (boat). Basically stock rules.

Cant find any more pre pollution heads that haven't been run through the system so many times that we can make a decent head out of AND stay within the rules (no chamber mods etc)

Are pollution heads with the EGR passage in the center two exhaust port any good?

The EGR passage is opposite the short turn in the ex port. Will this hinder flow if the passage is blocked at the other end by the inlet manifold.( will it create enough of a stagnant effect to be negligible)?

I can flow test but only have a 110, will 10" be enough to get a worthy indication?

Cheers

Nick

Imperial Engines.

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#2 Shiney005

Oh My, Don't you post alot

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Name:Laurie
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Posted 17 December 2017 - 09:17 AM

The question is above my pay grade, (Come back Johnno) but won't the class allow you to run the VN - VT head if left stock?

Edited by Shiney005, 17 December 2017 - 09:18 AM.

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#3 Redslur

Has been Torana owner

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Name:Gerry
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Posted 17 December 2017 - 07:06 PM

I have a set of untouched pre-poloution 308 heads with standard valves sitting under my bench. They came off my old hatch and were working fine at the time. I couldn't believe that they were so original and untouched. Would sell them for $200 the pair + delivery if you were interested.

Cheers, Gerry

Edited by Redslur, 17 December 2017 - 07:07 PM.