now, they’re supposed to be the same as our stock head, just a lil better flow. but will my R/S change, and if so, do u guys have any estimations on how much??? the answer to this question will determine if im going to sleeve the block or not.
The r/s ratio is the ratio between the rod length and the stroke. If you are not changing the crank or the rods you will not change the ratio.
Frankenstien is a term that is used to describe a ls block with a Vtec head. You stated a B18b1. This is also an ls head so it is a direct swap for your stock head. If you meant B18c1 then that is a vtec and is a frankenstien. Either way it will not affect your r/s.
Not all B18a motors have the small ports so your B18b might not flow any better. But I think they do have better stock cams.
ah ok thanks!!! yeah i bought a b18b1 just cuz. i needed another head to build up while i can still drive the car so why not ya kno?
i dont think im gonna sleeve the block. i’ll have a shop look at it to be sure, but i’ll be runnin the drag turbo kit and some n2o. i figure, its already got a good R/S and its only going to be revved to 6.7k… shouldnt need sleeving
thanks for the info!!! if anybody has anything to add, please do!
whats the rs on an s2k? they rev to 10k rpm. yea anyways b18a and b18b are identical except the b18b has a wilder cam and polish job stock. i would honestly rev up to around 7-7.5k rpm if i was gonna put the money into a turbo kit. either that or run a smal turbo so that it finishes spooling well before i shift. btw i would have your bottem end balanced, crank polished, rods shot-peened, new pistons rins and bearings. talk to your local machine shop they will assemble a full engnie for a decent price normally. peace