Civic89stdB16

My car is breaking up like crazy right at the vtec crossover and wont go away up higher in the rpm's either. it goes away if we disengage vtec. what is everyone setting there cam gears to and y would it do this. My boy has been trying to get them to work for me but cant firgure them out. my car is on e85 also. compression is 9.5 to 1. turbo is a hx35 7 blade. its a track car not a street car. If i swith back to stock gsr it goes through vtec fine. lmk thanks.

BTW. I seen tons of peple running these cams making big power without any problems just not me.

TheShodan

iTrader: (14)

Why are you using such a small turbo for such a cam like this.. Those (or similar) need to be reserved for larger turbochargers over 61lbs/min. Using those on such a small unit wouldn't help you with power anyway. We don't "set these up" like they're some sort of NA car because of the fact that it is forced induction, which changes the equation exponentially.

I know I'm not being the most helpful directly with your question of cam gears, but really, its best to stay with your GS-Rs for this turbocharger. Use the Blox for something else.

Civic89stdB16

im getting a bw366xl in a couple of weeks and will be putting them back in. if i can get them to work.

Civic89stdB16

i have seen them also on 350whp turbo cars with a 57 trim on them and work. so my turbo should work ok but idk y it aint.

blwncr

Could it be valve springs causing float? Just curious as im experiencing similar issues with break up/surging after vtec engagement with my F20B blue top turbo. Sweet off vtec, break up on vtec, no det anywhere,11.8 afr. Im running 9.5:1 comp top mount and GT35 turbo

TempestRacing

i had a car kick my butt on the dyno years ago with a similar problem (however it had stock cams in it)...i spent a lot of time trying to figure it out, eventually got so frustrated i just pulled the head to take a look. turned out the car had a bunch of bent valves. ran perfectly as a NA car, discovered this after we put the turbo kit on and it just would not work with vtec. put some new valves in it and its still running to this day.

i have also seen people have their low cam / high cam fuel tables so far off that as soon as the car gets into the high cam map it goes so lean or so rich so quick that it never registers on the wideband before it starts turning into a bucking bronco.

post up some logs

kyden

are you running a log manifold?

HiProfile

Set vtec far lower and set boost as low as you can go. Then tune upwards with PSI, then do the same except with vtec set very high. Finally set x-over and fine-tune that spot if needed.

If that's not it, it could be floating valves. Anything bigger than ITR cams do not like stock valve springs.

Civic89stdB16

its not valves floating. i have blox springs and retainers. it turns into a bucking bronco at vtec. idky. i just want it to work and go away.

Hidenplanvew

might need a retune

blwncr

What style of manifold are you running?

rico892002

hmmm...there fine in my car..my car needs to be retune with them tho..i had gsr cams in my set up and thur these in..run fine..vtec crossover is fine...i got on it a little bit, but like i said i need to retune the car

CDecker0218

Thats what im thinking

rico892002

^^^^thats what it sounds like to me..i have my gears set a 0,0 just til i get on a dyno..blox specs say +1 or +2 degree on intake and 0 on exhaust..also did u change the valve lash to blox specs

92redhatch

I have blox b's and they work great. I have them set to 0,0. My vtec is set to 4000rpm. I'm on a 6765 motor is a lsvtec 84x89. I'm actually going for 800+whp soon

Civic89stdB16

im on a cast log right now but im switching to a topmount with a s366xl. the walve lash was redune for the blox cams. the settings were at 0 and 0 and the vtec was set at 5700.

kyden

there is your main problem. coupled with a turbo too small for your cam setup.

Civic89stdB16

thanks brop. thats y im switching to a topmount and a 366xl. if my block gets sleeved then im going to the beast s372.