Size tb do i go

EG_H22 · Post by **EG_H22** » Tue Sep 11, 2012 10:35 pm

Guys whats a good size to bore my tb too for a h22a?
Or is there other tbs that fit on there that are bigger?

Cheers

Post by **4thgenphil** » Tue Sep 11, 2012 10:47 pm

depends what mods you have done!

A1ex · Post by **A1ex** » Wed Sep 12, 2012 8:41 am

ATR or type S TB is 62mm vs stock 60mm. As phil said depends on mods, I'm running 62mm and it isn't causing any restrictions

EG_H22 · Post by **EG_H22** » Wed Sep 12, 2012 10:32 am

Engine:
Balancer shaft removal kit
euro r inlet manifold
Euro r throttle body
Gasflow and ported head
3 angle valve job
Head re-build
Skunk2 pro series/jun cam pulleys
manual tensioner conversion
Euro r bottom pulley (as im not going to run power steering)
Fuel rail and fuel pressure regulator

Exhaust:
tri-y exhaust manifold
Custom 2.5 inch mandrel bent system (decatted)

Tuning:
Chipped p28 on hondata software

EG_H22 · Post by **EG_H22** » Wed Sep 12, 2012 10:33 am

So what size tb would go with this setup

Rocketrooney · Post by **Rocketrooney** » Wed Sep 12, 2012 11:24 am

Put this on it http://www.funkypower.co.uk/catalogue.p ... oduct=6653

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 12:12 pm

At least 68mm with a portmatch in your Intake manifold!

I bought this:
http://www.xenocron.com/throttle-body-68mm-p-372.html

A1ex · Post by **A1ex** » Wed Sep 12, 2012 12:41 pm

spend your money on some higher comp pistons, ATR or type s prelude one. Youll see a much better gain from that than a bigger TB.

With bigger cams you drop the dynamic compression on your motor which limits torque and peak power so you need higher compression pistons to compensate for this.

I've had this advice of an expert (Rich at PAW) as I was looking at the same thing with my motor. Get the compression up then look at the flow.

Have you done this work already?

Post by **NafemanNathan** » Wed Sep 12, 2012 12:46 pm

70-72mm Definitely stay away from the Skunk2 CNC'd TB as they're prone to sticking, but as I'm understanding it, you're simply just boring out your existing TB right?

Some sound advise there from Alex/Rich. Surprised you've not looked at this area, or was the engine bought like this?

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 1:10 pm

It´s been tested on dyno that even with stock compression you can gain power in the mid to high rev range with only bigger cams, like pro1 vs pro2!

Cams do jump dynamic compression since you have more air and fuel with good advance in ignition...the only side effect with low compression with cams and everything is the not full potential of them is reachable!! We talk about basic bolt-on at low cost versus a entire set of piston and rings...if we stick with Mahle or oem atr...if you go higher compression you MUST sleeve the H22....so the money spent is far from been the same!

As for power output with only intake, exhaust, headers and the other stuff you got it´s been seen 200whp or more, but then all my pals go to at least 68mm TB, saw a friend with h23vtec dohc JDM with that kind of mods reaching 220whp on a dynapack(head and intake ported)!

http://www.youtube.com/watch?v=12cIiwns ... ature=plcp