oifovo
Well-Known Member
- Joined
- Jan 11, 2011
- Messages
- 2,287
Right lads and gals,
Bear with me this might be a bit long
This at this stage is definitely more of a brain exercise rather than something that's about to happen anytime soon, but since I have a spare B16B block, crank, rods & pistons just lying here I can't help but think what I could do with them. I have no interest in high power figures, turbo or stroking are out of question as it's not what I want plus everyone seems to go that way these days. What I want is a high revving N/A screamer, for which the B16B would seem like an ideal motor. Except it isn't, because there are no off the shelf pistons or rods available. As far as I know B16A and B16B pistons have different wrist pin height, which is why PCT pistons produce fairly high compression in B16A engines (negative piston to deck height)? Assuming that's correct then if I used B16A forged pistons I would end up with too high positive piston to deck clearance and too low compression - no good. So I've been thinking about custom forged pistons that would mate with stock rods (not ideal), and then I realized I don't need custom pistons at all - I can use any forged B16 pistons I like as long as I get custom rods made up to account for the difference between the length of the standard B16B rod and the different wrist pin height? That would mean even higher (if only slightly) Rod/Stroke ratio, which would be perfect for a high revving N/A motor! Obviously I would need to figure out exactly how long would the rods need to be (I think I'd actually buy B16A piston, put it on my B16B rod and physically measure the piston to deck height as I've found so many different figures for rod lengths online that I simply wouldn't trust them)
Now, are these assumptions correct or am I missing something here?
Discuss
Bear with me this might be a bit long
This at this stage is definitely more of a brain exercise rather than something that's about to happen anytime soon, but since I have a spare B16B block, crank, rods & pistons just lying here I can't help but think what I could do with them. I have no interest in high power figures, turbo or stroking are out of question as it's not what I want plus everyone seems to go that way these days. What I want is a high revving N/A screamer, for which the B16B would seem like an ideal motor. Except it isn't, because there are no off the shelf pistons or rods available. As far as I know B16A and B16B pistons have different wrist pin height, which is why PCT pistons produce fairly high compression in B16A engines (negative piston to deck height)? Assuming that's correct then if I used B16A forged pistons I would end up with too high positive piston to deck clearance and too low compression - no good. So I've been thinking about custom forged pistons that would mate with stock rods (not ideal), and then I realized I don't need custom pistons at all - I can use any forged B16 pistons I like as long as I get custom rods made up to account for the difference between the length of the standard B16B rod and the different wrist pin height? That would mean even higher (if only slightly) Rod/Stroke ratio, which would be perfect for a high revving N/A motor! Obviously I would need to figure out exactly how long would the rods need to be (I think I'd actually buy B16A piston, put it on my B16B rod and physically measure the piston to deck height as I've found so many different figures for rod lengths online that I simply wouldn't trust them)
Now, are these assumptions correct or am I missing something here?
Discuss