7.44 @ 181 aussie 4g63

[tri26t]

Colin Wilshire just ran a 7.44 @ 181mph on his tune up run
with his motor pulling an estimated 1025hp-1050hp and this
is his small engine, witch they are nearly finished with
so this engine and a little more boost ? 70psi ? they are
expecting solid 6.5/6.6s or better. this engine (old one)
has carrillo rods nothing special ? forges and is de-camed
the engine is still in the 1200 dato ute, but not for long

On another note they have found there monster ported heads
are shit and have there small port heads makeing better flow
and heaps more power,"go figure"
cheers:Phil.

[airbats801]

small port as in ported slightly or small port as in 61 head or small port as in 2g head?

[iXNAY]

think he is talking second Gen heads

[airbats801]

interesting. Wonder what the guy in thestates running 6's is running.

I've heard you can port a 2g head out omre than a 1g.

[tri26t]

its an evo 3/4 motor with (yes) 2nd gen head
flowed only no big monster port, they reckon
better flow speed over volume and this has
cured exploding heads.

[www.18u]

evo 3 and evo 4 are very different motors! Later heads like a evo 6 has the best stock flow but has only a very small amount of meat for porting compared to a evo 1/3 head. You will notice the change of the port for the injector on a late model head also.

Still a massive effort to get those sort of times/numbers :party

[redzone]

found out performance wholesale does most of the top aussie 4G63's heads, they CNC port them. i suspect they're using 2nd gen heads..