Boring the RB25DET?

[Vader1_240SX]

Ok..... i dont know much about the RB and the turbo situation.My plan is to take and RB25 and put it into a 93 240sx...... i read the link to the swap , but its not gonna help me with this question. What im tryin to do is take the head and have them ported and polished and the cylinders have them bored out.... so my problem, i cant seem to find a chart for the specs of the rb motor to see what its stroke length is or diameter of the cylinder is.. so i would know how far over stock i can bore to equal the liter.......if this isnt clear heres and example: say the cylinder diameter is like 80mm stock...... how far can i bore it without losing integrity of the cylinder walls and aslo what size turbo would i need based on the amount of bore? also what type of pistons would i need if i had it stroked?...... if this still isnt clear u can email me at [email protected] and ill try to explain better..... i know theres gonna be a lot to it , but answers is all i need. Thanx for reading this

[ehacker01]

EngineModel RB25DETType Water cooling DOHCDisplacement, cc 2498Turbo TurboCylinders Serial 6, 24 ValvesMax Horsepower, hp / rpm 250 / 6400Max Torque, Nm / rpm 294.2 / 4800Fuel System EGI (Electronic Gasoline Injection)Fuel Type GasolineCompression Ratio 9.0Bore * Stroke, mm 86 x 71.7Fuel Consumption, l/100km 9.8

[Bluefire]

why not just pick up an rb30 block and modify head to fit?

-Bluefire

[gawdzilla]

2mm over is the max.

type of pistons you need- forged

[themadscientist]

i hear this sort of thing a lot. Why are you already set on boring it over? Just because it can handle it doesn't mean it has to be done. If you want larger displacement from the outset then don't halfstep, get a 26. The block and head are superior and you pick up 100 ccs with nothing done to it.