Is anybody aware of the throttle bodies from the vendor MRZ? 60 mm 62 mm are these readily swappable? also are they bigger then the 2.4 tb? thnx

 

Not sure of the size of the 2.4 TB, but just remember that you will need a tune if you change the size from stock.

 

Drive by cable if my memory is correct.

 

LSJ vs LE5 TB size:
https://www.zzperformance.com/products_img/988_2.jpg

Thank you ZZP.

 

Going with to large of a throttle body will slow down air velocity killing performance. I wouldn't recommend anything larger then a 2.4 throttle body on a 2.4 intake manifold.

 

X2.

 

im running the LSJ TB on my 2.2, runs fine, just had to repin the harness for it

 

You're SC, though.

 

exactly.

 

have your tb ported pm me if u want it done. here is my dyno results before and after on an lsj but u get the idea. smoother slightly larger opening= more hp
https://www.cobaltss.net/forums/show...ight=headgames

 

whats that got to do with anything, you can use the stock tb with the sc...interviewatruins ran the stock one for more than 7months :p

 

wish zzp would hurry up with the adapter harness for the 08 2.4s to run the LSJ throttle body lol im too lazy to repin it!

 

LSJ TB on a bolted and tuned 2.2L is too much, and someone a few posts before beat me to it: "Going with to large of a throttle body will slow down air velocity killing performance. I wouldn't recommend anything larger then a 2.4 throttle body on a 2.4 intake manifold."

 

But its not too big for a bolt on 2.4!

 

hmm yes it is.

 

its funny how some people on here think (not anyone in this specific thread) that the bigger the throttle body the better, not knowing that it IS possible to use a throttle body that is too friggin big.

 

I don't mean to side track but how does your 2.2 auto run now that you're tuned? I have the same mods on my 2.2 auto plus the 2.4 tb and intake mani very soon. Just wondering how you like it and how much of a difference?

 

do it and don't look back. you gotta feel the dirfference for yourself.

 

x2

it was a whole new car tuned. i love it. powers getting kind of boring now. need MOAR!

 

First off.. For a bolted 2.4, yes, it is still too big.

Second.. THIS IS THE ******* 2.2 SECTION. Why the **** do we care about a bolted 2.4??

 

your going to tell me that on a tuned full exhaust intake 2.4 a throttle body thats 3mm bigger is too big? You do realize there was honda 4 cylinders with 60-62mm throttle bodies right? And those are the b16a2 and f20c. So they arent even their biggest 4 cylinders. Now your going to proceed to tell me a 2.4 making about 40hp more at the crank wouldnt benefit from 5-7mm more throttle body?

On a bolt on 2.4 an LSJ tb will make slightly more power. On a 2.2 it is a bit too much.

So what you guys are trying to say is that the 2.2 will benefit from going from a 58mm throttle body to a 64mm throttle body but that the 2.4 wont benefit from going from a 64 to 67?

 

Please go read up on flow dynamics on an engine. Also consider how much surface area you add with 2 mm. Best thing you could do is take 2.4 throttle body and machine or port top half in such a way to make it a tapered throttle body which will help air velocity.

Velocity is more important then size of port/opening.

 

I actually understand that. But this has been shown to make more power on a 2.4.
So therefore whats the issue? Theres a lot of variables to take into account yes. But also take into account a poor port job could introduce far too much turbulence as well. If its been proven to make a bit more power then thats enough said.

 

For a couple horsepower up top but a lose of a couple foot pounds of torque? You're better off without it.

 

We dont know if the cars lost tq down low or not yet as no ones dyno'd a 2.4 with the larger throttle body. But theres enough evidence to support that the 2.4 would be able to use the additional size. Its barely a bump up anyway.