ITB's on a D-series..

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Old Jan 15, 2007 | 07:27 PM
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Default ITB's on a D-series..

Well i found these in my garage . They are off a 1994 Yamaha FZR 1000 They arent Fuel Injectred. Its a carb system i guess. w/ reeds.

My car. 91 std ed w/d15b1 I currently have DUAL POINT injection. Is it possible to use this ITB setup?

here are some pics of it





Here is the Primary Fuel line.


thx
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Old Jan 15, 2007 | 07:36 PM
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Default Re: ITB's on a D-series.. (Discontained)

Anythings possible with enough money.

I think CBR 954RR throttle bodies would work a little better...Honda-for-Honda..TPS voltage is the same...just gotta hack an intake manifold to attach it to.

I was going to do a ghetto racecar. Delta 272 Camshaft, Generic Valvetrain components, 954RR ITBs, TurboEdit for ECU chipping, ebay headers, ebay coldair intake, 12:1 comp pistons...

But yes, do what you please.
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Old Jan 15, 2007 | 07:39 PM
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so these can be made to work. Since my car is Dual Point, i should have that much of a problem?
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Old Jan 15, 2007 | 07:44 PM
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Default Re: (Discontained)

Well, that depends on what you're doing.

If you're going to use them as carbs and disable your fuel injection, you'll have to sort something out for an aftermarket ignition system if i'm not mistaken. Also, i'm not sure if those quad mikunis can flow enough fuel. If it turns out you can get them to work, all you have to do is cut your DPFI manifold at the runners and find some way to attach this.

If you're using it with an FI setup, you'll have to convert your car to MPFI first. Also, you'll need an MPFI manifold to cut in half. It'd be easier in this case to source out the 954 TBs...
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Old Jan 15, 2007 | 07:47 PM
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Default Re: ITB's on a D-series.. (office888)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by office888 &raquo;</TD></TR><TR><TD CLASS="quote">Anythings possible with enough money.


I was going to do a ghetto racecar. 954RR ITBs, ebay coldair intake

</TD></TR></TABLE>

OK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Discontained &raquo;</TD></TR><TR><TD CLASS="quote">Well i found these in my garage . They are off a 1994 Yamaha FZR 1000 They arent Fuel Injectred. Its a carb system i guess. w/ reeds.

My car. 91 std ed w/d15b1 I currently have DUAL POINT injection. Is it possible to use this ITB setup?

</TD></TR></TABLE>

those are not itb's, those are carbs. You could scrap all your fuel injection and try them but I dought it would work well. I have seen bike carbs any many crazy setups though.
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Old Jan 15, 2007 | 08:21 PM
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Default Re: ITB's on a D-series.. (highroller54)

some of the fastest EFs run carb set ups. You could use them. no wiring. Office888 has no idea what he/she is talking about, just to let you know
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Old Jan 15, 2007 | 08:55 PM
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Default Re: ITB's on a D-series.. (Got_soy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Got_soy &raquo;</TD></TR><TR><TD CLASS="quote">some of the fastest EFs run carb set ups. You could use them. no wiring. Office888 has no idea what he/she is talking about, just to let you know</TD></TR></TABLE>

if you dont do any wiring how would the ignition work? you need a tps and map sensor for the ecm to calulate proper spark advance.
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Old Jan 15, 2007 | 09:08 PM
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Default Re: ITB's on a D-series.. (highroller54)

got_soy, jokes on you. do YOUR research.

I've researched it before. You have to use an aftermarket ignition.

No MAP, No TPS. Sure you could probably rig something, but accuracy would be an issue.
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Old Jan 15, 2007 | 09:21 PM
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well i wouldnt use itb's unless i had high compression... prob be a waist of time... but anything is possible
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Old Jan 15, 2007 | 09:48 PM
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Thanks for the usefull answer's. I'll check into all the issues and stuff, i just had it laying around in my garage for a couple years. thought i could do something cool to my car with them.. imight just sell them
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Old Jan 15, 2007 | 09:58 PM
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Default Re: ITB's on a D-series.. (highroller54)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by highroller54 &raquo;</TD></TR><TR><TD CLASS="quote">
those are not itb's, those are carbs. You could scrap all your fuel injection and try them but I dought it would work well. I have seen bike carbs any many crazy setups though.</TD></TR></TABLE>

Just because they are carbs does not mean they need to be used as carbs. The fact is that those carbs are, in fact, 4 individual throttle bodies. Take a look at a lot of the ITBs on sportbikes these days like the R6. The ITBs look almost identical to the carb racks of the old days, only they don't have the float bowl hanging off the bottom.

These might work, but it's pretty obvious that it will take some custom work to get everything to fit and you will also have to figure out a bung for the fuel injectors.

If you really want to use these, I would pull the float bowls and floats (the bottom of the carb) and start from there. Plug the needle jet, pilot jet, etc... and then find a way to get the injectors to work. You'll also have to custom fit a TPS on there.

Another thing worth noting is that those are CV carbs (Constant Velocity). This means that the black plastic throttle slide will only open at a rate proportional to your engine's vacuum builds. This type of carb was invented because back when you just had slide carbs and you just dump the throttle wide open, it could cause the engine to hesitate. It may not be necessary with your setup, especially having electronic fuel injection.
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Old Jan 15, 2007 | 10:17 PM
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Sounds like djphonics knows more than me on the subject, but I have some simple info that it seems nobody has mentioned.

I'd run them as ITB's if all works out. You'll need to attach a tps as mentioned.

The other thing: A good ITB setup has them line up well with a cut off intake manifold.

Similar bore, similar spacing between each ITB (can usually be spaced differently with creativity).

Get those and you're golden.
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Old Jan 15, 2007 | 10:22 PM
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Default Re: (bagpipe goatee)

Definitely true, bagpipe goatee. With custom ITBs, some sort of custom fab work will usually need to be done to make the throttle bodies line up with the intake port spacing/geometry. Definitely something to keep in mind, especially if you don't have access to machine tools
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Old Jan 15, 2007 | 11:09 PM
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Default Re: (Discontained)

Given the amount of work involved and the fact that you know nothing about carbs...the outcome has a high probability of being less than successful.
Selling them is probably your best bet...try Redpepper. There are are a lot of carb guys over there.
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Old Jan 16, 2007 | 03:30 AM
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Default Re: (davens)

by no wringing, there wouldnt be ecu harnesses and resistorbox wriring. I should of said "less wriring"
YOur still dumb though, were you going to use a plenum with your Ebay Airintake and Itbs?
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Old Jan 16, 2007 | 05:03 AM
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Default Re: (Got_soy)

we made a manifold for similar carbs(honda cbr carbs) on a DOHC d16a6 (89 integra engine)

it idled decently, reved in neutral ok, didnt run for crap under load.

later we used a 2 barrel holley. it worked better, but still sucked. we went back to a fully tuneable setup with turboedit.

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Old Jan 16, 2007 | 08:15 AM
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Default Re: (redzcstandardhatch)

Doesnt look like you have anything to loose by trying.

Get a second manifold and see what you can come up with.
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Old Jan 16, 2007 | 08:18 AM
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sell those and buy an ITB setup that'll be easier to intall. unless u like challenges and arent afraid of ****** up your injection system lol. personally, the wiring along would make me cry.
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Old Jan 16, 2007 | 08:21 AM
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Default Re: (slwburn)

for what its worth, ive seen an ITB system on an ef whose intake manifold was just 4 peices of 2 inch diameter vinyl hose.. it was really ghetto, but the car ran. it ran way rich though. i dont know what the hose was from, but it was about a quarter inch thick and held on with hose clamps.. looked kinda like a big radiator hose.

i dont suggest that you use the hose as a permanent solution, but it may be just enough to allow you to test out a setup without blowing a lot of money on custom intakes.
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Old Jan 16, 2007 | 08:42 AM
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Default Re: (sanimalp)

it ran way rich because it wasnt tuned for the ITB's. they usually will run on OEM ecu's, but only work decently at WOT. partial throttle looses a lot of vaccum, thus, the stock program in the ecu (MAP based stuff) throws a lot of fuel at it, thinking it needs it.

tune it for it, and it works.

i had ITB's on my DOHC zc a long time ago. daily drove them, but the engine kept popping HG's, and i abandoned it. they sounded absolutly amazing for a few thousand miles though. i ripped it through a tunnel in chicago, (highway), winding out 3rd gear, going like 70 or 80 or 90, dont remember.. windows open, and man..it sounded so amazing..i couldnt believe it.

didnt really make any more power. the engine had a milled head, big cams, etc..and a wild header. that was it.

man, it sounded cool though. thats the only reason i dont regret it.


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Old Jan 16, 2007 | 09:13 AM
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Default Re: (redzcstandardhatch)

not only does it sound cool,man it looks cool too.
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Old Jan 16, 2007 | 03:49 PM
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Default Re: (Got_soy)

lmfao, early morning post, didn't mean to type "ebay coldair intake". Mind was on different issues...

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Old Jan 16, 2007 | 04:01 PM
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what are the dangers of ITB's and can it be set up with a turbo? I honestly dont know anything about them, never really had the interest to
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Old Jan 16, 2007 | 04:04 PM
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Default Re: (office888)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by office888 &raquo;</TD></TR><TR><TD CLASS="quote">lmfao, early morning post, didn't mean to type "ebay coldair intake". Mind was on different issues...

</TD></TR></TABLE>

What are you talking about? How is it even possible to say you were gonna run ITB's and an ebay CAI by mistake

And the post time says 8:36pm. Not early moring to me
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Old Jan 16, 2007 | 04:28 PM
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Default Re: (SupraRXZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SupraRXZ &raquo;</TD></TR><TR><TD CLASS="quote">what are the dangers of ITB's and can it be set up with a turbo? I honestly dont know anything about them, never really had the interest to</TD></TR></TABLE>

There shouldnt be any dangers. In the nissan world Theres a GTI-R SR20DET that comes factory with ITB's and a T28 Turbo. That was soooo baller.

The pic down there is FACTORY EQUIPMENT from a GTI-R SR20DET:



Also If you look closley, this is a GTI-R motor and It has the factory ITB's on there! I love it

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