Slobodan
New member
- Joined
- Mar 29, 2004
- Location
- Northwest part of Oregon
I've got this Early B21F with 8.5:1 CR (slighty dished Pistons)
First question. Are these pistons going to handle K-Jet Turbo boosT of 12psi to 15psi?
Second question. Would I be better off swapping out those pistons for the B21 flat tops (9.5:1 CR pistons)
And thirdly, I want a high comp B21 on the cheap for +T. Should I just rering the 8.5:1 pistons and get the head shaved down extremely far in order to raise compression. And how far could I shave the head to achieve that sweet spot of 9.5:1? I have MLS stock thickness head gasket begging to be used. Got it cheap.
Going to be using either V cam or IPD Turbo. Going to try this proposed engine with K-jet and stick to around 12 psi. If K-jet can't cope with the high CR of this setup. then I will just go back to LH 2.2 which I know will be able to handle this higher CR. I had at one time, a 9.5:1 CR B21F +Teed with LH 2.2 Turbo WAY back, It was awesome!! Ran 15psi, moved pretty good and was good on gas!! 28mpg hiway. Currently I've got B21FT K-Jet and uhh not great milage. motor seems tired to me. eats oil, and generally feel weak after I raped it under LH 2.2 E85 with improper tune and 20psi.
First question. Are these pistons going to handle K-Jet Turbo boosT of 12psi to 15psi?
Second question. Would I be better off swapping out those pistons for the B21 flat tops (9.5:1 CR pistons)
And thirdly, I want a high comp B21 on the cheap for +T. Should I just rering the 8.5:1 pistons and get the head shaved down extremely far in order to raise compression. And how far could I shave the head to achieve that sweet spot of 9.5:1? I have MLS stock thickness head gasket begging to be used. Got it cheap.
Going to be using either V cam or IPD Turbo. Going to try this proposed engine with K-jet and stick to around 12 psi. If K-jet can't cope with the high CR of this setup. then I will just go back to LH 2.2 which I know will be able to handle this higher CR. I had at one time, a 9.5:1 CR B21F +Teed with LH 2.2 Turbo WAY back, It was awesome!! Ran 15psi, moved pretty good and was good on gas!! 28mpg hiway. Currently I've got B21FT K-Jet and uhh not great milage. motor seems tired to me. eats oil, and generally feel weak after I raped it under LH 2.2 E85 with improper tune and 20psi.