Which Head?

[Paul]

Ok, I have finally got a deal for a set of T40's. I have just one thing left to decide, and that is which head to use?

I can get either a 1.2 inlet or a 1.4 inlet for the t40's, so should i stick with my modded 1.4 head, or swap for a 1.2 head? Which would see more power gains etc?

My mate will donate me his old 1.2 head for free, so i could easily sell my head for a bit of money, to put towards having them set up properly. Any ideas/suggeustions.

Cheers Paul

[Snowface]

when u say modded 1.4 head, what mods has it?

e.g. if its B+ blydenstein then keep it.

[Paul]

ported gas flowed polished and skimmed.

[Snowface]

is it meant to or has it given any more power?

Any work done to inlets?

have the valves been cleaned aswell?

may be worth keeping 1400 head, but if u B+ (or even do the same as on ur 1400 head) the 1200 u would see more power between the two.

[Dave]

on mine i went for a tinkered with 1.4sri head, have got some t40's on a 13 manifold on a shelf in my garage
so as another option you can use 1.4sri head with the 1.3 T40's manifold and open up the posts to match

[Snowface]

its a 1.4 sr head he's on about, which is totally different to sri. smaller valves etc.

[mikeyredtop]

obviusly the sri head would be better if u can get hold of 1, c14se, if u cant stick with ur ported etc 14sr head

[Dave]

, so should i stick with my modded 1.4 head, or swap for a 1.2 head? Which would see more power gains etc?


Was just giving him another option to try would be a bit more work but probably worth it :D

[LiD0N]

long

[Jack]

long

eh? :?

[MC]

Use the 1.2 head over you modded 1.4 head. It is will be better standard than a 1.4 SR head modded.

MC

[Snowface]

the sri head is unsuitable for a carb'd car. its ports are different and other stuff like head gasket will be different.

[Dave]

the sri head is unsuitable for a carb'd car. its ports are different and other stuff like head gasket will be different.
:evil:
you can make the 1.3sr inlet manifold fit the sri head with a bit of port work.
The inlet manifold ports are round and the head ones oval shaped so you can match them up.
i think when i did mine i used the sri head gasket and it all went togeather fine.

[Aragorn]

or u just buy a 1600 gte inlet manifold and it matches the sri head perfectly :P

[Dave]

or u just buy a 1600 gte inlet manifold and it matches
the sri head perfectly :P

would that allow a carb sit on it as the gte's were injected?
if it does i could have saved meself load of time! :lol:

[Snowface]

no, a carb won't sit on a MPi manifold at all. not even an spi manifold either.

Best bet is to get a 1.2 head and get it B+.

If u don't want to spend that much then just stick with ur 1400 head as a standard 1.2 head won't be any better if u modded the 1400 head slightly.

[Will]

or u just buy a 1600 gte inlet manifold and it matches
the sri head perfectly :P

would that allow a carb sit on it as the gte's were injected?
if it does i could have saved meself load of time! :lol:

he means 1600 GTE inlet manifold for T40s ;)