Max SR Displacement

[trojanjg]

Does any one know how much more displacement you could make on the SR block? I heard, it was 2.2liter boar out of the block is the best. becasue it gives balanced power along the whole rev band? I was wandering if this was true.

[trojanjg]

if the diplace ment is changed what would you have to do to the intake and exhaust valves would you have to retard them?

[Hijacker]

2.2 is a stroker kit. it changes the stroke/bore ratio and the engine isn't as smooth as it is in it's 2.0 liter form. As far as retarding/advancing the valves. I would say that they would actually need to be opened for a longer duration to accomodate the extra displacement.

[trojanjg]

do u know what the best displacement is for this engine, for a car that is going to be drifted. not a dragster.

[Cyberkreig]

If i had to guess, i'd guess that the best displacement is the one it came with.

the SR is a square motor. meaning the bore = the stroke 86mm x 86mm. altering either number will alter the way the motor revs and makes power.

[Hijacker]

Cyber and I are in agreeance over this. A square bore stroke should never be changed IMO. It ruins the point of having the SR. If I want a motor with more displacement, I'll turbo a KA.

[FAST-DATSUN]

Sreveral US companies have 2.4 kit for the SR JWT being one...