hey mate, I recently installed B16a head on B20b bottom, last night i just brought the car home without my headers, sound was annoying and drive was not that good.
Kindly Tell me After My running process ends, how much Performance should i expect from it ? better then B16a i suppose ? and some people says if you rev it high on B20b bottom the crank wont last long, is it true ?

 

true

 

Well, if the car is running correctly ( no cel, no misfires, and what not) you should have some decent performance, If you get a chipped ecu or somthing like an apexi vafc u can tune it to run better, especially if u have a stock ecu now

 

ummmm im not sure... i have a B20b vtec as will with the B16a head. along with the B16 trans. ive had mine running real strong ever since it was built 2 1/2 years ago. stock internals as well. as far as reving high, do you have a block gurdle on? thats suppose to give support so your able to safley rev high. im redlining at 8400rpms. i also have a skunk2 intake manifold and gsr cams. dont know if i helped you but if you have any more questions just ask. or i could give you my whole setup but thats basically it.
::knocking on wood about my motor running strong::

 

@ B20PWRD
really man that helped me alot, now i m little relax abt the reving prob but i m facing new problems in my new B20b Vtec that is on 6000 rpm its starts missing, and it do not rev more then 6000 rpm and after the Run i get Check light, and the code is #9 ( cyl position ) do you know anything like that ? HELP needed.

 

replace the dizzy

 

driving with no headers or exhaust manifold can damage the valves

 

yea you can kill your motor by just idling it like that. get a good header man. check out logic motorsports

 

And B20 pistons are not the greatest for b16 Head...from what i have been told...