Throttle Bodies?
02-25-2010, 12:41 AM
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Throttle Bodies?
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
02-26-2010, 06:40 PM
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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.
02-28-2010, 04:13 PM
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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
https://www.cobaltss.net/forums/show...ight=headgames
02-28-2010, 05:37 PM
#13
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."
03-01-2010, 04:10 AM
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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."
03-01-2010, 09:12 AM
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03-01-2010, 11:00 AM
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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?
03-01-2010, 11:53 AM
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03-01-2010, 02:05 PM
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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?
03-01-2010, 05:12 PM
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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?
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?
Velocity is more important then size of port/opening.
03-01-2010, 05:30 PM
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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.
Velocity is more important then size of port/opening.
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.
03-01-2010, 08:39 PM
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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.
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.
03-01-2010, 08:52 PM
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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.