[Mk2] [Turbo] Rev 2 and rev 3 head

phil-p · Post by **phil-p** » Fri Feb 22, 2008 9:49 pm

Whats the difference between the rev2 and rev3 head?

I am just starting doing a rebuild and hope to be running around the 400bhp mark but i want response, Which is the better head for this the rev2 and rev3.

Cheers Phil

JAP BOY · Post by **JAP BOY** » Sat Feb 23, 2008 1:11 am

I would probably say the REV3 head would be better for flow plus response!!!!
But the REv1/2 exactly the same have bigger ports but less flow rate Rev 3 + smaller ports but more flow rate!!!!

Century Motorsport · Post by **Century Motorsport** » Sat Feb 23, 2008 1:25 am

Yep Jap Boy is right - small port rev 3 head all the way.

Nathan

phil-p · Post by **phil-p** » Sat Feb 23, 2008 12:24 pm

Cheers so its worth me getting hold of a rev 3 head then.

Phil

phil-p · Post by **phil-p** » Sat Feb 23, 2008 4:23 pm

another thing i have thought about, what if i get the rev 2 head ported and polisehed then is it as good or is it still worth buying a rev 3 head?

Cheers Phil

Century Motorsport · Post by **Century Motorsport** » Sat Feb 23, 2008 7:17 pm

Well, its swings and round abouts. What are your power aims?

The rev 3 head is a better design, period. The yanks claim the earlier head flows better then the later - well maybe so but you will get better performance from a later head due to port design, size and inlet / outlet balance.

Nathan

JAP BOY · Post by **JAP BOY** » Sat Feb 23, 2008 11:12 pm

HMMMMMM i've got a rev1 and always remebered that the Rev3 was better all round!!!!
Obiviously phil-p porting and polish might get you flowing more but i'm not sure how a REv1/2 head fully ported+polished would stack up to a Rev3 in the same state of porting + Polishing!!!! Maybe nathan might know alot more at this stage!!!!

Nathan i'm shocked that the yanks reckon the ealier head flows better!!

phil-p · Post by **phil-p** » Sun Feb 24, 2008 12:24 am

Cheers, well the state of tune that i am going for is around the 400hp mark but i want quite good respons aswell cos its my evertday car.

Well i will just get the rev 3 head

Phil

greeny · Post by **greeny** » Sun Feb 24, 2008 8:04 pm

Didnt Dino (forgot his username) do testing on rev1/2/3 heads and came up with results that showed the rev1 head was actually the best base to start from?

I may be wrong as was a few years ago.

MR2Mania?

jimGTS · Post by **jimGTS** » Mon Feb 25, 2008 12:09 pm

JAP BOY wrote: HMMMMMM i've got a rev1 and always remebered that the Rev3 was better all round!!!!
Obiviously phil-p porting and polish might get you flowing more but i'm not sure how a REv1/2 head fully ported+polished would stack up to a Rev3 in the same state of porting + Polishing!!!! Maybe nathan might know alot more at this stage!!!!

Nathan i'm shocked that the yanks reckon the ealier head flows better!!

am sure they dont "recon", those yanks have tons of info and proof of all these claims....

including that the rev1/2 inlet manifold is actually better to, lol.....i read the other day.

am not sure in what respects, but they generally back up all these claims.

JAP BOY · Post by **JAP BOY** » Tue Feb 26, 2008 1:52 am

Good points guys !!!! from what i remeber about future projects on here is that the Rev3 head was better!!!!!!!

www.imoc.co.uk

[Mk2] [Turbo] Rev 2 and rev 3 head

[Mk2] [Turbo] Rev 2 and rev 3 head

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Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head

Re: [Mk2] [Turbo] Rev 2 and rev 3 head