Custom IM H22
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From: Appleton WI
Custom IM H22
Dont mind me if this idea seems kinda wack but a good friend would be willing to mock it up if I pay for the mats.
Ill get straight to the picture, then explain.
The only problems I could forsee is getting both TB'S(yellow) to open and close together. And maybe the size of the plenum. With the runners angled towards the TB's, you would think they would gain better airflow, it would be 2 runners to a TB basically. I don't know if this has been done or if it would even be worth it. I would probably use 2 smaller TB'S from what I don't know yet but let me know what you all think, problems I could run into, maybe better placement of runners or The TB's, or even if this is just rediculous. All opinions appreciated.
Ill get straight to the picture, then explain.
The only problems I could forsee is getting both TB'S(yellow) to open and close together. And maybe the size of the plenum. With the runners angled towards the TB's, you would think they would gain better airflow, it would be 2 runners to a TB basically. I don't know if this has been done or if it would even be worth it. I would probably use 2 smaller TB'S from what I don't know yet but let me know what you all think, problems I could run into, maybe better placement of runners or The TB's, or even if this is just rediculous. All opinions appreciated.
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Joined: Dec 2005
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From: montreal, quebec, canada
Re: Custom IM H22
i dont think it will be bad as long as everything is doing the right way
but for sure there are many way simpler than this one to get an optimal result
one problem you can have its to clear the brake master cylinder
what other modification have you made on the engine if it is stock you will loose a lot of low and mid power with no gain nothing exept an engine witch want to rev higher and higher and still cant do it
but for sure there are many way simpler than this one to get an optimal result
one problem you can have its to clear the brake master cylinder
what other modification have you made on the engine if it is stock you will loose a lot of low and mid power with no gain nothing exept an engine witch want to rev higher and higher and still cant do it
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From: dayton, oh, usa
Re: Custom IM H22
will the plenum be divided in the middle so that there are ONLY two runners per TB or will the air from each TB be slamming into each other in the middle? i have no data or experience in this but i would think it might cause some undesired turbulence that could hinder optimal flow.
can someone post a link or pic of Rosko's dual TB IM
can someone post a link or pic of Rosko's dual TB IM
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From: Brandon, FL, US
Re: Custom IM H22
Originally Posted by Rosko
Thanks,yeah we will see, I will add a spacer to the current plenum and see what giving it more volume does, I have a feeling the plenum doesnt really act like a plenum with this kind of setup though. The lower part has had the dividers machined out and the webs that are left have been machined a bit lower as well, making the runner shorter and giving the plenum more volume. Based on the calculations Matt, Blake and I did long ago this should have more volume over a stock manifold, but we will see what even more does. It all unbolts and seals with o-ring gaskets so it should be pretty easy and fast to switch out on the dyno.
Talks about the manifold on page 16 or 17 (at 40 posts per page) (post 637)
Rosko is a pretty ballsy machinist.
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From: dayton, oh, usa
Re: Custom IM H22
holy ****! thats bad ***. i'm assuming thats a ram air setup?
lol. jlude90, i just noticed your avitar, thats f'in awsome i love the stig where did you find that?
lol. jlude90, i just noticed your avitar, thats f'in awsome i love the stig where did you find that?
Last edited by got wide; Sep 13, 2009 at 07:48 PM.
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From: Brandon, FL, US
Re: Custom IM H22
Originally Posted by Rosko
Heres the graph, this is my Euro-R with 70mm throttle body vs my modified stock manifold with a billet plenum and 60mm top mounted twin bore throttle body. Overall peak hp was roughly the same, but the dual tb setup killed the Euro-R in the low end. I plan to do more testing with this manifold to see if I can move some of that torque a bit further up. I will make a shorter plenum as well as a spacer and test and tune each one individually and compare the powerbands then go from there.
Euro-R = 240.5hp @8300, Peak torque 163.5 lb-ft @7500
Dual TB = 241.2hp @8200, Peak torque 172.1 lb-ft @4600
Euro-R = 240.5hp @8300, Peak torque 163.5 lb-ft @7500
Dual TB = 241.2hp @8200, Peak torque 172.1 lb-ft @4600
But oddly enough, look what someone found on ebay today....
http://cgi.ebay.com/ebaymotors/Honda...s#ht_500wt_977
GrandMasterLarry...Is Larry Widmer in the Klan? haha, thats the first thing that came to my mind.
Last edited by jlude90; Sep 14, 2009 at 04:13 PM.
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