How big is the opening on a Euro-R IM? I'm looking to get a tb and need to know what size to get. Should I maybe bore out the IM a lil bit and get a tb to match that? Also, what tb do you guys suggest...?

*edit* here's the only option i've found here on ht https://honda-tech.com/zerothread?id=1140381





Modified by snowblind7x at 10:17 PM 2/22/2006

 

I have been looking at 66 & 68mm throttle bodys. I have a 70mm STR right now that I think is stealing a little low-mid range power. STR was bought out by BDL.
There are a couple of other options such as an ITR or S2K throttle body.
As far as port matching it, it can be done with a die-grinder. You most definitely do not want that lip there, it will disrupt airflow.

 

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stock 62mm ITR throttlebody..

 

whats the stock bore on the Euro-R IM?

 

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If I remember right, its 60mm.. Most of the throttlebodys taper down 2mm.. So, the stock ITR 62mm at the filter side, and tapers down to 60mm where it meets the manifold. I remember the 60mm being flush with the port in the IM..

 

i thought the euroR was 66mm. not sure if it tapers down on the manifold side though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redtop22 &raquo;</TD></TR><TR><TD CLASS="quote">i thought the euroR was 66mm. not sure if it tapers down on the manifold side though </TD></TR></TABLE>

i agree....why doesnt anyone run the euroR tb?

 

The Euro R T-body can be bored out to 66mm (rather than just 64mm like our stock t-bodies). The Euro/Type S/H23a vtec T-bodies are 62mm at the plate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">

i agree....why doesnt anyone run the euroR tb?</TD></TR></TABLE>

I would run it if i had gotten it with my swap. But since i got a tiny piece of **** tb with it im just gonna buy an aftermarket one and probably port math my IM to it. I just don't know how big to go with the IM/TB or what TB to get...

 

The only tb i can find here on ht is 72 mm at the intake opening and 70 mm on the IM side. Is that to big?

 

The tb im thinking about getting is a RPM service tb and I can either get a 72mm tapered to 70 or a 70 tapered to 68. Which do you guys think i should get? Does anyone have any experience with RPM Service tbs? I really have no clue about anything to do with tb's. Any and all help is appreciated

*edit* I guess i can get a skunk2 tb for the same price. So any input on the Skunk2 or RPM Service tb is appreciated


Modified by snowblind7x at 6:49 PM 2/23/2006

 

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well i ended up getting the 68mm Skunk2 Pro Series Billet Throttle Body. Can i just get a standard H22 tb gasket for it...? Or maybe it comes with one eh...?