A quick question

Im from OZ i got a BC 2.4L stroker kit they said i could send it back and get the 2.6L stroker kit but shipping from AUS to USA and back again is a killer

So i was wondering has anyone put a 2.4L stroker kit into a 4G64? with any luck? Will i need to change the pistons? due to comp issues?

just trying to work this out as im finding it hard to find a decent evo Block in Aust

Thank you

Regards Rob

 

I'm using that exact combo, JE custom made a set of pistons for my setup in 2.5 weeks. Turned out perfect.

 

Are you running the BC 106 mm crank or something custom?

What bore are you running? BC has theirs spec'd @ 87.5 mm.

 

I'm running the BC 102mm crank, with 6.000" long BC rods and custom JE Pistons on a 4G64 block. I wouldn't bother switching out for the extra 4mm stroke...stick with the 102mm. My bore is just larger than the standard 86.50mm. The extra cylinder wall thickness by using a smaller bore is more practical than the increase in displacement from a larger bore.

 

So do you know your CC?

And how does the engine rev?

As i have read with that it should rev better and alot higher but im unsure trying to find out info.

 

^^ Rev alot higher??? its usually the opposite... more cc = less RPM limit...

 

86.55 mm bore, 102mm stroke...about 2.4 liters.

My car isn't running yet, but typically a longer stroke (not bore) makes high RPMs more stressful on the internal components. So, no, you're engine isn't going to rev higher...only see more stress at higher RPMs. To counter this problem, most people choose to set the rev limiter lower. However, you will have 20% more displacement that will really help your midrange. For the street (or any application where the engine will not see long durations at high RPM), the 2.4L is a excellent combo.

 

So i should stick with maybe a 4g63 block if i want to rev

as BC qoute 9500 being safe to rev to with the 4g63 with surporting mods eg head work

maybe i should go 4g64 Block with 2L gear and make a 2.1L that can REV

Thanks for your help seanC i will keep looking into this the goal is to be able to rev to at least 8000rpms and have rev limit set at 8500 MAX