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Retal052
motorcycle fuel injection a series advice needed
#1
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Hey guys,

I have just ordered some throttle bodies from an r6 injected yamaha. they came with fuel rail and injectors for $100!!!

Now I have the computer, webber manifold to adapt it to. what I need to know now is how to get the fuel to it what size piping to run and how much pressure????

Posted on: 2007/11/13 12:30
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cheater_5
Re: motorcycle fuel injection a series advice needed
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is the comp going to manage spark ? how you going to control that? Sounds good. Can i see some pics, pretty interested.
Sorry cant help with the fuel

Posted on: 2007/11/13 19:52
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dattodude
Re: motorcycle fuel injection a series advice needed
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No life (a.k.a. DattoMaster)
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5/16th standard EFI I would think. You'll need 2 lines, feed and return.

25-35 PSI will do the job. Get a EFI pump, and a regulator (that attaches to the tank return line). The regulator might already be attached to somewhere on the fuel rail.


Posted on: 2007/11/13 20:40
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clyons8
Re: motorcycle fuel injection a series advice needed
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Sorry this may sound stupid but,

Why would the regulator go on the return?

I'm confusing myself the more I think about it.

Posted on: 2007/11/14 9:48
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dattodude
Re: motorcycle fuel injection a series advice needed
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No life (a.k.a. DattoMaster)
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you want to regulate the 'pressure' between the pump and the injector. think about it after a beer, it makes more sense.

Posted on: 2007/11/14 10:47
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'71 Green 1200 Sedan CA18DET Project 99.98% complete
'71 White 1200 Sedan 20,000mi + A14T (twin 40DCOE 30/70 cam, extractors)
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converted
Re: motorcycle fuel injection a series advice needed
#6
No life (a.k.a. DattoMaster)
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yep listen to dattodude, except on my SR20DE with autronic setup We bumped the fuel pressure to 60psi for optimum spray pattern....best way is to have your injectors bench tested to see what would be the optimum pressure to run...

Posted on: 2007/11/14 19:50
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clyons8
Re: motorcycle fuel injection a series advice needed
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No life (a.k.a. DattoMaster)
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Dattodude I think I know whats going on.

Retal Where did you buy the setup from? 100 squids is pretty damn cheap. I was trying to sus out what the setup looks like but couldn't find pics of it all. Post some pictures up.

Are the throttle bodies the newer revised 40mm ones or the old 38mm R6 ones?

Posted on: 2007/11/14 21:32
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Retal052
Re: motorcycle fuel injection a series advice needed
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piccys as required
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Just search ebay for throttle bodies.....most come from the states. but these are coming from melbourne.

Posted on: 2007/11/16 13:11
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perthute
Re: motorcycle fuel injection a series advice needed
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i was thinking, r6 is .6 of a litre yes. your puttting this on a a12? will it be able to give enough fule/air ?

i thought r1 would of been the way to go


Posted on: 2007/11/16 23:10
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clyons8
Re: motorcycle fuel injection a series advice needed
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No life (a.k.a. DattoMaster)
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150 cc/ cylinder on the R6

I'd be interested to know the answer actually. There were a set of keihin carbs on ebay not long ago, very expensive though.


EDIT: I think Beattie and Sidedraught know a fair bit about m/cycle carbs on datsuns, it'd be interesting to hear what they have to say. I think it was Beattie?

Posted on: 2007/11/17 0:22
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