RITLINBOY-91.SI

Hey whats up guy's? Ok so I have a B16A3 in my 91 Civic Si. The motor is completly stock as I want to bar the car. I had a stock b16 head on the motor and after going to the race track I floated a valve as I did not know I needed better springs! =( so I just used my spare b16 head. Now the car was tuned on crome, but has not been retuned after the head was changed. My throttle body was a stock b16 throttle body and I bored it out to 68mm and its tapered back into the stock size. I am running a Type R manifold which I believe is 64mm Stock. I never bored or honed the manifold. This throttle body due to being bored out, the material was so thin it CRACKED! I threw my 70mm BLOX throttle body on it and now have constant 1st gear bogging. When I put the gas peddle to the metal and drop the clutch its boggs out, engine does not die, but my throttle responce just BLOWS!

So I threw on a new cast throttle body I ordered from IL4 and its 68 tapered to 65 and I believe as I said the Type R manifold is 64mm. So when I slowly rev the engine its fine, but when I snap the throttle cable I hear a loud suck noise obviously from the intake, and it take a second or two to actualy respond.

So my questions are:
1: Is this normal for a stock b16?
2: My friend said I need to retune check time and get a fuel pressure regulator. Is this true?
3: If this is not normal what can I do for better throttle responce? =( I want to be able to hit the gas and have a SNAP like responce from the gas pedal.

Thanks guys I know this is long but you guys have helped me build this thing!

MonkeyMagic

1 wrong forum

2 removing/raising rev limit on stock motor is retarded

3 please include only relevant info in your posts

4 i like crunchy tacos better

but to answer your questions:

1. yes the suck is normal

2. retune yes, check timing can't hurt and fpr.. no

3. throttle response? a well-designed intake manifold, higher compression, anything but stock head, a lighter flywheel, good exhaust system, and some grade-a old fashioned intelligent tuning. some people will swear by the whale-dick intake too.

94EG8

You might also wanna replace your fuel filter, if its mostly clogged it'll idle all day but fall flat on its face under load.

b20hatchek

yup^

PaulPero

check the cam timing see if there installed right then check your ignition timing

RITLINBOY-91.SI

Hey guys thanks for the tips! The first post made me laugh! And my bad about the wrong Forum but thanks for the help anyways. I will check the cam timing and the engnition timeing as well, and will swap out the fuel filter and get back to you guys once I have done all this and let you know how it goes. Thanks for the help. Any other ideas from anyone else would be greatly appreciated. Thanks again.