NA: ITB's
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From: TX
Originally Posted by s2kennmark,Jun 5 2007, 01:04 AM
actually yeah... our caravan to sac the other day for sacS2Kdays was around 85-90 degrees, i loved how the car ran.
im took my 80mm horn today and replaced it with the new 50mm from Fuji Racing... i will try it tomorrow.
50mm length
80mm length
im took my 80mm horn today and replaced it with the new 50mm from Fuji Racing... i will try it tomorrow.
50mm length
80mm length
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From: Ogden, UT
i just looked at the fuli website....they dont have the 48mm throttle bodies...only 45mm using 38mm hornes...
so i am a little confused...we are saying that the 50mm throttle bodies are too much and that we need to be looking at 48mm, but fuji only has the 45mm...
but hayward is using the 48mm....
but both are using Jenvey throttle bodies?
WTF mates?!?!?!
Ryan
so i am a little confused...we are saying that the 50mm throttle bodies are too much and that we need to be looking at 48mm, but fuji only has the 45mm...
but hayward is using the 48mm....
but both are using Jenvey throttle bodies?
WTF mates?!?!?!
Ryan
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Joined: Feb 2006
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From: Ogden, UT
i, i must be missing something then...sorry for the confusion
i dont know, pust have been a dirrferent site, or on old one? i dont know, but your right, it does show on the site that it is a 47mm.
my mistake guys
Ryan
i dont know, pust have been a dirrferent site, or on old one? i dont know, but your right, it does show on the site that it is a 47mm.
my mistake guys
Ryan
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Joined: Jun 2007
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Originally Posted by wildcardtrd,Jun 4 2007, 03:54 PM
Anyone else notice their ITB's running a crapload better now that it's summer? 
I've also noticed less carbon buildup on my exhaust tips...hmmm....
I've also noticed less carbon buildup on my exhaust tips...hmmm....
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Originally Posted by MINES13,Jun 6 2007, 06:26 AM
Unfortuneately like with most aspects of this engine, basic engine theory does not apply. The longer we lengthened the runners the more power we made everywhere, they probobly want to be 160mm long or more. Obviously I am running more cam and a longer stroke but that said, one would think based on your thoery (which I too shared at one point) a shorter runner would provide greater gains up top, this simply did not pan out however. Packaging ofcourse is an issue however. Maybe if someone ran an ITB setup in a Lotus 7 kit they could really prove out the optimal length. We simply don't have enough room in there to go the distance. I think you will find a noticeable power loss with the 50mm length. I will post my dyno graph of the longer horn setup along with horn specs as soon as we figure out what exactly worked best for us.
I'm curious what other basic theories this motor disproves? Not knocking your work... awesome to see R&D behind products!
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Joined: Dec 2003
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From: Hackensack, NJ
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hey ERL S2000 where are you getting your head work done? Portflow? I think that portflow does the exact same headwork for FI and NA applications and from reading this thread that is not the way to go with the f20c head
cant wait to see the hytech block package with their cams and header
hey ERL S2000 where are you getting your head work done? Portflow? I think that portflow does the exact same headwork for FI and NA applications and from reading this thread that is not the way to go with the f20c head
cant wait to see the hytech block package with their cams and header
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From: Hackensack, NJ
Originally Posted by s2kennmark,May 8 2007, 12:16 PM
well i just installed my 50mm jenvey kit from fuji racing and man i cant wait til this weekend for dyno tuning.... ill keep you guys posted, im so stoked