Fuji racing irtb
11-30-06, 07:55 PM
#1
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Fuji racing irtb
"FujiRacing ROTARY13B IRTB KIT. Available Dec. 2006. Rev to 12000 RPM's " What do you guys think?? Pretty sure 12k redline sound gonna wet me everytime I floor it...
11-30-06, 11:13 PM
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they make kits for the Miata and S2000 already. they used to make a kit for the RX7 years ago, but stopped. Looks like thye are redesigning their kits. Funny thing was that I was just baout to call them to see if they were planning on doing this.
www.fuji-racing.com
BC
www.fuji-racing.com
BC
11-30-06, 11:13 PM
#4
spoon!
*hits google* Well... it looks pretty much like a Weber IDA manifold with a throttle body bolted to it, albeit bent further around with what looks (from the little tiny picture) like a curved extension between the manifold and TB. Therefore, I feel confident in predicting that, unless they fucked up the design somehow, it'll perform similarily to any other Weber style throttle body setup, only with slightly more runner length.
Which isn't to say it's anything bad really; the Weber style manifolds (well, some of them) are very good off-the-shelf solutions. But I don't really think it's anything to get that excited about; equivalent stuff has existed for years.
12k RPM redline? Well, it's (evidently) possible with the right internals, or at least some of the Aussies running Improved Production (wasn't that it?) on bridgeports claim to be making power at around there. But those are some very, very serious engines... and, well, despite the claims on the site, I wouldn't get your hopes up unless you're building something just as serious.
Which isn't to say it's anything bad really; the Weber style manifolds (well, some of them) are very good off-the-shelf solutions. But I don't really think it's anything to get that excited about; equivalent stuff has existed for years.
12k RPM redline? Well, it's (evidently) possible with the right internals, or at least some of the Aussies running Improved Production (wasn't that it?) on bridgeports claim to be making power at around there. But those are some very, very serious engines... and, well, despite the claims on the site, I wouldn't get your hopes up unless you're building something just as serious.
11-30-06, 11:26 PM
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Its just saying that it will provide sufficient air to go to 12k rpms.
just for motivation: http://videos.streetfire.net/Player....3-88AD7020C61A
yes, its an S2000, but it is one of the reasons I have looked into ITBs. They sound phenominal at WOT.
BC
just for motivation: http://videos.streetfire.net/Player....3-88AD7020C61A
yes, its an S2000, but it is one of the reasons I have looked into ITBs. They sound phenominal at WOT.
BC
12-01-06, 03:37 PM
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Originally Posted by SirCygnus
yeah. but dont do anything for performance.
if he was smart, he woulda kept the original inatake, and ditched that shitty *** rice exhaust.
ps, it seemed to not be that fast.too much money spent on other places.
if he was smart, he woulda kept the original inatake, and ditched that shitty *** rice exhaust.
ps, it seemed to not be that fast.too much money spent on other places.
Lets pretend for a minute that it doesnt flow better up top, and there isnt an increase in high end hp.
ITB's significantly lower throttleed volume. Meanign that you push the pedal and the engine responds almost immediately to whatever you input is. Talk to anyone who has driven a car with a single throttle versus appropriately placed ITBs and they will tell you that the difference is very significant.
In either case I have a hard time believing there isnt any performance gain. Besides being a less turbulent feed to each port, there is the benefit of being able to tune intake to specific rpms. further there it is a straighter shot for the air to get to the ports, and finally a gain seen from less parasitic loss.
BC
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12-02-06, 02:12 AM
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I'd be perfectly content having a motor that revved to 12K but only had 10hrs of run time.
12-02-06, 02:49 AM
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Originally Posted by anewconvert
yes, its an S2000, but it is one of the reasons I have looked into ITBs. They sound phenominal at WOT.
I build them to go fast.
-Ted
12-02-06, 03:24 AM
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IRTB does make ur car faster... not only sound. Those car gonna have instant throttle response. I also heard some race car setup w/ both turbo and irtb... But thats gonna be $$$$$$$$
12-02-06, 10:24 AM
#11
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Louder does not necessarily mean faster.
In fact, with my old age, I would rather have the car DEADLY silent but quick.
Throttle response?
I can do that with a lightened flywheel and messing with throttle transient maps on almost any stand-alone EMS...
-Ted
In fact, with my old age, I would rather have the car DEADLY silent but quick.
Throttle response?
I can do that with a lightened flywheel and messing with throttle transient maps on almost any stand-alone EMS...
-Ted
12-05-06, 06:35 PM
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If you want to do a 4 throat ITB Set-Up I would suggest getting one throttle bodies from a new 4 cylinder sport bike (r1, GSXR, Busa). There have been quite few people with other engines that have used these itb's.
12-05-06, 10:12 PM
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I don't think anyone has used the bike ITB's on a Rotary, but I have seen coutless set-ups put on 4 cylinder motors (SR20 various hondas, and a few KA24 motors). But I see no reason why it wouldn't work on a 13b or 12a. The sizes on these throttles seem about perfect (ranging from 40mm to 48mm) depending on application. I really want to make a new UIM to connect some GSXR1000 throttles to my 6 port LIM.
12-05-06, 10:58 PM
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Yes, someone has. I will go find him. He has talked about it in the FC forum many times. At least ONE person has done it on this site. IIRC he used either GSXR 1000 or CBR 600RR ITBs.
BC
BC
12-06-06, 09:43 AM
#21
Originally Posted by j200pruf
I don't think anyone has used the bike ITB's on a Rotary, but I have seen coutless set-ups put on 4 cylinder motors (SR20 various hondas, and a few KA24 motors). But I see no reason why it wouldn't work on a 13b or 12a. The sizes on these throttles seem about perfect (ranging from 40mm to 48mm) depending on application. I really want to make a new UIM to connect some GSXR1000 throttles to my 6 port LIM.
Was done several years ago (like probly 7 years ago) by someone in Australia. The HitMan did the tunning. It was a DCOE carbed bridge port 13b that got converted to 4 individual throttle bodies from a motor cycle and went to a Haltech. The engine lost like 20 RWHP no matter the tune. Some things that are proven just work really REALLY well. I'm not saying we shouldn't change and innovate, it's just you have to look forward to a few failures
.~Mike.................
12-06-06, 11:25 PM
#23
I'm sorry wha?
I was thinkin about the GSX-r ones but in the end its just all about how to place the TPS and what not. I actually foudna few companies that make ones to almost any spec and I figured 4 throat ITB with 50-56mm plates would be awsome!
12-07-06, 12:09 AM
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I do not see why you would need more than two throttle bodies (unless its a 20B) but I would keep in mind runner length and diameter... and try to get a slight taper on it too.
And unless its a progressive linkage (one opens before the other) you can put the TPS on either of them.
And unless its a progressive linkage (one opens before the other) you can put the TPS on either of them.
12-07-06, 12:56 AM
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The best reason to use 4 TBs... You can customize the length and diameter of the primary vs secondary/6PI intake to take advantage of their inherenet differences. Long and narrow for the primaries, short and wide for the secondary/6PI
Would be even nicer to run a 2 throttle setup with the secondaries and primaries completely segregated with the runners in a boxer formation. but I digress.
BC
Would be even nicer to run a 2 throttle setup with the secondaries and primaries completely segregated with the runners in a boxer formation. but I digress.
BC