The raptor has Dual Mikuni 33mm BSR. Is the 33mm the diameter of the space the air travels through? Where is this measurement taken?(the front or back) The reason I ask is because I have got a hold of a throttle body from a GSX-R 750 street bike for a rather cheap price. One side the diameter is 40mm and on the oposite side the diameter is 50mm. (measuring from both inside edges) I am wondering if I would be able to use this throttle body on the raptor? I plan to try to make an EFI system from scratch. I think I may be able to do it with the help of you guys here on the forums, resources on the internet, and some people I know. I know very little about EFI so this will definately be a learning experience for me. If all else fails ill buy the system from KMS.


PS I know there needs to be alot of fabrication. Any suggestions are welcome.

 

Almost forgot heres the link to the throttle body i bought

Throttle body

 

um. a throttle body only passes Air, their made for bikes with fuel injection. your not going to be able to put that on your raptor.

 

Thanks for actually reading the post.

 

I see no reason you can't use that on your raptor. Obviously you still need a lot of hardware but that seems like a good TB to start with. I have been looking at designing a custom efi for my raptor for a long time. I considered using the megasquirt computer system. Just do your homework and ask lots of questions. Don't be afraid to experiment a little. You can always go back to stock if you can't make it work (or by from KMS like you said). Let us know how it goes and good luck.

~HoundDog

And to LT250RFatty, a throttle body not only passes air, it serves as a injection site, fuel air mixture site, and holds the throttle position sensor which is vital to computer calculation for injection timing.

 

Thanks hound, I was also looking at the megasquirt (someone suggested it in another thread). Cant wait to get started on it, I think it will be lots of fun and keep me buisy for a while [img]i/expressions/face-icon-small-smile.gif[/img]