Technical > Spud Miller's Cave

Spud, learn me please. FI on a race motorbike.

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wideopen231:
Well if you want to go real fast.I know Spider man LArry McBride uses whipple charger off truck setup.I know becuase due to his and dads name being the same they accidently shipped me 2 of his blowers.Man I hated seeing ups showup the next day.

As for injector idea I have done exactly like spud is talking about using carb.If its junk carb you can bore it out and make new butterfly. If doing so let me know I have little trick for making butterfly which is not really douns its little oblong. All you need is lathe and piece of round stock maybe 1.5 to 2". You need the end milled to about 10* and drilled and tapped (same pattern as shaft)to hold material for blade.When you turn blade on it you will have obong and the edge will be beveled like most factory units. Ive done all of my EFI harley units this way.

On the boring you can not get crazy normally due to casting of carbs. If go to billet liece you can make hiow ever big you want. I get into doing crap like this and if like contact me and if I can help let me know.

hotrod316:
hi wideopen,

sorry just saw you posted.  Yes, I love the spiderman, that bike is very cool.  I would have told them that I never got a blower and made your harley RUN!!! :P

If you have experience boring out auto type carbs, have you ever messed with boring the sidedraft motorccylce carbs?  My factory service manual says that the 29mm carb is much beetter suited to the 1000 engine over the stock 26mm carbs.  I have found out that they are the same carb just the bore is different. Was thinking of opening up the carbs and seeing what I get in return, HAve a spare set sitting on the rack. 

And If spud sees this,  Have you ever ran some Nitro in Race Gas.  I was thinking why not just tip the can a bit and see what happens.   ... This way I dont have to fool around with increasing the fuel volume like i would if I converted to MeOH.  If I can get by with using the stock style carbs bored out and then playing with the nitro jetting I would be tickled pink.  I havent had any two wheel time yet this season so the simplest solution would be my friend at this point....

Thanks all
Matt

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