Ive got a stock b20vtec. its a b16 head shaved 40 over. and b16 tranny. i was wondering what would be the best things i can do to make more power ive been reading and been trying to see what i can do and it seems like a set of cams would be good. but will a set off cams really wake it up and what would i have to do if i got some cams and wich 1s would be best. i really apreaciate the help thanks

 

if you run type r cams you dont have to change the springs but i would to rev higher

 

are you running stock pistons?

 

find your self a really good race header maybe a RMF one with a magaphone if you dont already have one

 

yes block and head completly stock

 

Fully build the motor

 

Get some good quality high comp pistons and new bearings. get 12:5-1 comp or close and get it tuned. That will do a LOT more then just Cams.

 

stock bottom end b16 head itr cams some hytech or somewhat type headers alil juice there u go

 

i would put a nice intake manifold, good header with 2.5 collector and a set of ITR/CTR cams and tune it, this should net u in the 180-190whp and about 135-145lbs. tq. good enough to get u in the 12 sec range with a light chasis and some slicks!! G-L

 

What would qualify as 'fully built'?

 

cmon man.. pistons and rods, of course.

 

That would be the start for most engine building exercises.

 

don't make it a habbit of reving too high all the time because those b20 cylinder walls are weak. Unless u got a B20Z than thats a little better than a b20

 

engine management.

 

please elaborate!

 

well if hes 40 thou shaved his compression must be up wards of 12.0:1 so to put high compression pistons on that head would blow his motor right up i would suggest a a m24 cam from rocket a good header and a tune
degree those cams and check for clearances notch the valve reliefs to accomadate the new cam

 

How do you know what his CR is when you don't know if the block is b20b or z lol. Unless i didn't read that part. But anyway, since the head is milled so much i wouldn't go bigger then itr/ctr cams, but thats me, but yes for sure unless the valve reliefs on the stock pistons were opened up more.

 

i have a b20b block. my compresion is around 11 something. wat would be some good high compresion pistons? i also have a 4-1 header 2 1/2 all the way back with a skunk2 exhaust. i got about 400 houndred to play with rite now.

 

Wow, this thread is full of bad info.

 

Get Neptune($400) and save a little more for a wideband o2 sensor. Tuning your setup is just as if not more important than the parts themselves!