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Underbody braces, turbos and more!

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 Post subject: Quads
PostPosted: Mon Sep 15, 2003 7:55 am 
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Joined: Mon Sep 03, 2001 2:44 am
Posts: 348
Location: Perth, Western Australia
The throttle bodies are 38mm off a mid 80's Kawasaki 1100. I went for long runners to try and improve low down torque as opposed to short runners for more hp up higher in the rev range. The mod was actually quite easy. I had an inlet plate cut and just shaped (ovaled) the runners and welded them in place with the original quad setup clamped on the ends. This way, there wasn't a problem with the t/b not lining up with the head ports, which would be a problem closer to the head. I am running an aftermarket computer and at this stage of development the standard injectors have "maxed" out and can't provide enough fuel over 7000rpm. The car still didn't give me the low down grunt that I was chasing, but once on the revs (above 3000rpm) the car is a rocket, even on gravel. I'd like to up the compression and do some head work over the Christmas break and try and make some more h/p. How much does it make now? Well, it was a bit dissappointing getting only 85hp at the wheels, but I never did test before the mod and reading the dyno thread maybe I made anywhere up to a 20% improvement. <p></p><i></i>


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 Post subject: Quads
PostPosted: Mon Sep 15, 2003 7:18 pm 
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Joined: Sat Jul 05, 2003 1:59 pm
Posts: 206
Location: Surrey, B.C.
Hey that thing should fly in a mk1 body. But lets make something clear, we are getting into a numbers game that does not mean alot. First point your kawi 38's will have an actual follow rate of about a modern style 32 to 33 mm quad. the bore and actual flow rate are two different things. your long intake runner will do just as you wanted, but nitro is a street guy and wants top end pull. not only are the old kawi quads low flow and no offence to you but you could of not put on a worse air filter setup, so again you will be making the engine think the intake track is even smaller.If you don't believe me go look at a 03 stock one liter bike the air inlet/box is huge, thats why the gas tank is changed location to make room for the air box. In nitros case with moder gsxr quads he will have to deal with just the oppisite in that the injectors will want to give to much fuel and it will take some program tuning. <p></p><i></i>


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 Post subject: Re: Quads
PostPosted: Wed Sep 17, 2003 7:08 pm 
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Joined: Tue Jan 29, 2002 7:41 pm
Posts: 1697
Location: Armstrong British Columbia
hey guys<br><br>here is some more interesting stuff gracing the basement at my house.<br><!--EZCODE LINK START--><a href="http://groups.msn.com/holyshift/suzukiswift.msnw?Page=Last">ITB's</a><!--EZCODE LINK END--><br><br>I will have my suzuki running off them before the winter is up. they are very nice little pieces. with built in fuel injectors that have 4 holes for fuel to come out. the ecu must fire the injectors squencally as the harness has 8 wires. neat stuff. i opened the air box to find these very nice velocity stacks.<br> <p>MURR<br>Racing... Because other sports require only 1 ball</p><i></i>


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 Post subject: Re: Quads
PostPosted: Wed Sep 17, 2003 10:04 pm 
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Former TeamSwift Admin
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Joined: Tue Nov 19, 2002 9:58 am
Posts: 8146
Location: Seattle, WA
cool, what sort/size bike did you get those off of ?<br> <p></p><i></i>


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 Post subject: Re: Quads
PostPosted: Wed Sep 17, 2003 10:21 pm 
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Joined: Tue Jan 29, 2002 7:41 pm
Posts: 1697
Location: Armstrong British Columbia
2001 CBR honda 929.<br>got air box everything. pretty neat stuff. will take only a few mods to get it on...<br>Just working a deal for another SDS to control it with. it should be sweet. I'm trading a few bucks and my new indash TV for... <!--EZCODE EMOTICON START :) --><img src=http://www.ezboard.com/intl/aenglish/images/emoticons/smile.gif ALT=":)"><!--EZCODE EMOTICON END--> <p>MURR<br>Racing... Because other sports require only 1 ball</p><i></i>


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PostPosted: Mon Jan 26, 2009 9:22 am 
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Joined: Tue Dec 10, 2002 8:34 am
Posts: 186
Location: MALTA - EUROPE
Hi guys,

What do you think Throttle body of the GSR 1300 - Hyabusa on a suzuki swift. Does it fit with some modification. Is is better that the GSXR1000. Has anyone have it installed?

Thanks

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PostPosted: Sat Feb 14, 2009 6:46 pm 
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The mad quebecer
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Joined: Thu Nov 07, 2002 10:06 pm
Posts: 4569
Location: Chicoutimi, Québec
Go with a set of 929 quad tb pal. Much better suited for the swift gt config.

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PostPosted: Sat Feb 14, 2009 8:51 pm 
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Joined: Tue Dec 10, 2002 8:34 am
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Location: MALTA - EUROPE
Presently i have a cultus TB, Is it better than the set of 929 you mention. Do you have a pic od the 929 and from where i can buy them?

thanks


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PostPosted: Sun Feb 15, 2009 4:51 am 
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Joined: Fri Apr 02, 2004 5:56 am
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Location: Christchurch NZ, quake capital
rubenh wrote:
Presently i have a cultus TB, Is it better than the set of 929 you mention. Do you have a pic od the 929 and from where i can buy them?


Holy dead post Dattman!!!

The CBR 929 throttle bodies are better than a cultus TB in mid and top end but you have to run an aftermarket ecu.
The 929 is almost exactly the same as cbr 900 tb's, the injectors are a different colour so I'm presuming the 929 has bigger injectors, but on a g13 you don't need to use the honda injectors, blank off the injector holes and use the original suzuki injectors in the head.
The 929 tb's have an angled rubber coupler as the tb's are angled up more compared to the 900, otherwise everything else is identical.
The cbr tb's are nicley spaced apart unlike the GSXR tb's, the only problem is the small wheel on the butterfly shaft for throttle control, no room to mount a bigger one so I modified the cable pull ratio on my accelerator pedal :mrgreen:

The gsxr 600/750/1000 are generally 42mm and use a secondary butterfly for torque control, gsxr 1300(busa) is 45mm, CBR 900/929 are 40mm and the cbr 600 are 38mm but the port spacing is terribly narrow.

I'm running a microtech ecu and my map came from an identical cultus gti engine using a cultus manifold and 60mm tb, when run in my car it was horribly lean from 3000rpm onwards, I have a dyno chart for my engine but I don't have one from the other engine to compare other than knowing my engine needed more fuel at each rp and load point.

Throttle response is awesome as is the sound :ez_cool:

AFAIK no body is doing a conversion kit, I am in the process of making some dies so I can shape the runners more accurately so I can make manifolds more consistantly and then I intent to make a newer version for my own car and finish a plenum and then maybe then I might make a couple for other people.

Here's a pic of my unfinished setup from about 18 months ago, I am racing the car no and just use trumpets and socks atm
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Btw the cultus gti manifold is a very good manifold, well designed, great resale value and works very well and is very very good for a road car running an airflow meter, however I sold my cultus manifold and built a quad setup for much less than I sold my cultus manifold for :twisted:


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PostPosted: Sun Feb 15, 2009 12:18 pm 
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The mad quebecer
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Joined: Thu Nov 07, 2002 10:06 pm
Posts: 4569
Location: Chicoutimi, Québec
Pffff.. look at the Aussies stealing our Canuck ideas :P

seriously, I went with the honda tb (like Dattman) due to the close to perfection tb spacing but mostly to the nice and flat inlet flange. That flange allows you to bolt the plenum to the tbies without having to perform welding or extensive machining. If you have plans for Quad t/b, forget the stock computer. Don't forget the vaccum reservoir, a must for brake booster and steady idle.

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PostPosted: Sun Feb 15, 2009 1:42 pm 
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Joined: Fri Apr 02, 2004 5:56 am
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Location: Christchurch NZ, quake capital
Jardamuth wrote:
Pffff.. look at the Aussies stealing our Canuck ideas :P


How to insult a New Zealander... :mrgreen:


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PostPosted: Wed Feb 18, 2009 11:26 am 
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Joined: Fri Oct 17, 2008 12:59 am
Posts: 16
Location: UE
Here's mine :D
unfinished atm :oops:


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