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Itbs......anyone?


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Hey,

Been looking into ITBs for my N/A....having done a little research i`ve worked out the following

  • Get suzuki itbs 700/750 variant

  • chop up old manifold and join both with silicone joiners add V-stacks (all to the correct length in order to get it all to fit/air flow etc etc)

  • block suzuki injector holes, attach fuel rail/injectors and attach the set-up to the head

  • connect all the vac hoses to some sort of cylinder and run a line to

  1. map sensor
  2. to the little fuel thingy on the fuel rail
  3. brake booster (could also run this off one of the suzuki injector holes

  • use the stock suzuki tps (depending on the values it puts out) OR mod N/A one to fit

  • mod the throttle cable to fit

And thats as far as ive got......anyone shed some light on

  1. anything i`ve missed?
  2. will it work?
  3. can the engine take it?
  4. will i NEED standalone to control fueling/ignition?

Asad

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On th iPhone.

It cqan and has been done before and you woul need a pigg back to get it working properly.

Also the length of the runners would be vial to how it runs and where it produces it's power.

From what you have wroteyou know more about this than most.

Do you have the parts?

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Yup, read about the length of the runners somewhere....minor issue

eeeeeeeeeeekkkkkkk didnt want to hear the word piggyback= money :thumbsup:

IF this will work it will take me a couple of days to get the parts and a day to fit which is no problem i have enough money to bank role this just that now you mention piggyback its whats going to hold me back now....

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Gains are mainly to be had with a wilder cam, as itb's prevent charge robbing in the plenium.

Although even with standard cam, I have seen gains but thats with inlets and bodies that have been researched with flow, inlet length, velocity stack length and matched to the ports on the head etc etc.

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give bogg bros a call they specialise in making inlet mani's to suit bike carbs.im sure it was around 250/300 for a mani and to get the carbs fully cleaned and rejetted to suit your vehicle.i gave them a call when i had my lupo as i was gonna do itb's on the 1.6 and see what power i could get but the car had a fly-bywire throttle so wouldn't work on the bodies whereas im sure a starlet would have a cable throttle?

heres a link bogg bros

guy seemed to know his stuff and will give you a good idea wether or not its gonna be within budget or worthwhile....

edit:im sure all you need to do is send them an inlet mani gasket and they will make it up and send them out to you if you live far away

i was recomended to use blackbird bodies just to give you an idea of how much they cost....

blackbird bodies

hope this helps

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flow more air into the engine basically

But like most other mods its pretty much useless unless other parts are modified etc.

Ideally with ITB's you want a ported and polished head, yes the ITB's will flow alot more are but its still being resticted by the head, also bigger valves and then a high lift cam and it would be a screamer.

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flow more air into the engine basically

But like most other mods its pretty much useless unless other parts are modified etc.

Ideally with ITB's you want a ported and polished head, yes the ITB's will flow alot more are but its still being resticted by the head, also bigger valves and then a high lift cam and it would be a screamer.

sounds only worth doing it when everything else has been covered not something youd do to a 4efte running a ct9 lol

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  • 4 months later...

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