mivec TT

[evlvr4]

does anyone know if the 6a12 mivec heads fit onto the 6a12TT block??

would b an interesting mod i think?

[naughtika03]

no point in doing this.. TT's compression ratio is 8.5:1

Mivec MD version is 10 i think or maybe even 11:1

6A12/13's already got potential, just a bit crowded if you replace the stock turbo's with bigger ones.. some people out there replace it with big single..

[fuel]

man why did I not see this thread earlier?

MIVEC 6A12 heads will fit onto the TT block no problems there - problem is I don't know if the TT pistons have enough of a pocket to allow the valves to open more when it engages MIVEC. My MIVEC pistons have a deep pocket for the valves whereas my non-MIVEC 6A12 I stripped down didn't. Stock MIVEC compression ratio is 10:1.

Good luck finding heads from a MIVEC Galant though, the FTO heads wont fit I'm pretty sure.

Seems like alot of work for minimal gains anyway.

[Goku]

Yea, the mivec system on the Galants isn't as good as the ones on the evo's, you'd be losing power in the long run really. I wouldn't attempt it, it'll cost more than it's worth.

[fuel]

it's not so much it's not as great as the Evos - in the Galant/FTO/Mirages etc of the 90s the MIVEC was a true variable valve and lift control with two sets of cam profiles designed specifically for N/A power. With the later MIVECs found in most post 2002ish Mitsis it was more of an economy thing boosting mid-range torque, and later adapted to the Evo IX in conjunction with the turbo.

That MIVECT blue Mirage has a 4G93 GSR block with 4G92 MIVEC head and it puts out lots of power.