General Tech Help - b18c5.. boost up to what psi with block guard?

i am rebiulding my b18c5 and have installed a block guard. i know without block guard i can run 5-7 psi...what can i run with the guard? thanks guys.

5.1-7.1

your problem is the high compression and cast internals. though the guard will stabilize the cylinders at high rpms, so its a great investment.

ok, so your answer is max 7.1? i was hoping to get more than that with a block guard. still, i guess i didn't hurt anything. by the way, do i have to disable VTEC with turbo. I hear some say yes and others say no. Also, with 7.1, what can i expect HP wise, i'm getting 167 HP to the wheels now. Thanks again for your input.

167 on a c5 with a turbo? What do you have it in backwards or somethin?

good one xcm. No, i do not have the turbo yet. I am seeing if it is worth getting one. I didn't want to fork out that kind of money and just get, lets say 60 HP. the 167 HP is NA. no turbo

167 on a c5 with a turbo? What do you have it in backwards or somethin?



roflmfao

with good fuel managment you could propably run higher boost than 7 psi but this is also dependant on the size of your turbo. people have said that a 1.5 stock bottom end could not hold more than 9 psi or even a 75 shot of n2o. well ive ran a 75 shot for 7 months then went with a t28 turbo for another 4 months. . .till this day the car still runs.

Well, that's kind of a different story. The 1.5's are a lot sturdier than anybody thinks, but comparing one to a C5 to judge how much boost you can use is just bad.

those d15 conrods just make me a little nervous. when i pulled mine out, i coulnt believe how thin they were.

Yeah, it's true. The rods look like twigs. But after seeing someone running 9 lbs. and a 40 shot on a stock D15B1 daily with no issues...

makes me want to turbo my d16y7