big bore and rod ratio

[Nghost]

well, planning to go all motor with my gsr. want to get at least 200 whp and get a low 13 timeslip all while being daily driven.

gonna resleeve and bore my block with golden eagle to 85mm. thinking about 12:1 compression endyn pistons, but i read somewhere that that might be too high for a bore this big. if thats true, what compression should i shoot for?

also, want to switch over some parts to get a better rod ratio. heard that a b17 crank and ls rods make great ratios. if so, is it possible to get that in a gsr block, with out major modifications? will there be any clearance issues? or should i just stick with the gsr ratios? either way, planning to get forged eagle rods for better strenght.

any suggestions???

[blueSI]

i want to kinda do the same thing u doing but in an si and not such a big bore. i have seen a couple of gsr make over 200whp easily. with just a whole new valvestrain a head and some bolt ons.

[buckshot]

you can do it easly have fun

[99teg]

with that ratio being 12:1 you will have to use a very good fuel, VP perhaps

[Eeepers]

Sounds good, b17 crank with 85 mm bore will put you around 1.9L and give you a better rod ratio for high reving. Running that high compression will probably require you to use some kind of standalone like hondata, plus you would need to find someone to tune it properly for you but it's definately do able.