Holley 68mm TB.
 

A friend of mine gave me a brand new 68mm throttle body from Holley. It's for my 95 D16Z6. I realize that the manifold would need to be ported to match. Is anyone here running one? Pros? Cons? Thanks.

Nothing?

Not using one, but i'm sure it'll be fine since it's a reputable name brand. But yea, IM will have to be port matched as you said.

Though, what I would do in your situation is sell the Holley throttle body and just buy a larger than stock Honda throttle body like a 60mm one, to make some cash. I've heard that 68mm is pretty unnecessary, and that ~60mm is more optimal.

Yeah the 68mm is quite a bit larger. For some reason I was thinking stock was 65ish when I took it. Even if I got a 60mm I'd still have to port the IM as it is only 56ish. I did some more reading on porting the IM. Apparently it's not a good idea to port the stocker that much as it will cause idle issues and possible vacuum leaks. If I want to use the 68mm TB I'd have to get an aftermarket IM too.

stock TB is 56mm (just an FYI) - I think you figured that out already though


If you end up getting an aftermarket IM, i'd go with an edelbrock performer X.

Yeah I read the sticky about the TB sizes. The performer X is nice. Most aftermarket IM's are 62mm so I'd still need to do some port work to take full advantage of the 68mm TB. Thanks for the help.