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Deanh8
Posted on Wednesday, June 22, 2011 - 11:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Any differences in injectors between the XB9 and XB12? Anyone have any 12 injectors laying around they can get a part number off of?
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Froggy
Posted on Wednesday, June 22, 2011 - 11:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nothing. Both bikes use the same injectors.
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Deanh8
Posted on Thursday, June 23, 2011 - 02:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nevermind, I tried to fit my XB9 injectors in but they are not even close to the same size. They are like half an inch longer.
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Ericz
Posted on Thursday, June 23, 2011 - 08:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The 2003 injectors are different than all of the others. 2004 and on are the same.
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Trojan
Posted on Thursday, June 23, 2011 - 08:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Early XB9 racers in Europe used to fit some BMW R1150 injectors to their race bikes for more flow I think.
I don't know which model or part number though but I'm sure someone here will know : )
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Glitch
Posted on Thursday, June 23, 2011 - 09:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Jens knows I'm pretty sure, I believe it was him that posted in 03 that they were using them.
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Slaughter
Posted on Friday, June 24, 2011 - 10:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

XB12 injectors have the ports actually "aimed" down the throat of the throttle body where the earlier XB9 do a shot kind of straight out the end of the injector (kinda hard to explain without a picture - and NO, I'm NOT going to pull them for a picture!)
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Greg_e
Posted on Friday, June 24, 2011 - 12:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Do we have Bosch part numbers, specifically the early 03 9R injectors?
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Deanh8
Posted on Friday, June 24, 2011 - 04:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ill post them tonight
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Greg_e
Posted on Friday, June 24, 2011 - 05:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Cool! Maybe my rebuild will get new injectors too, heck everything else on the top end is getting replaced, might as well do the injectors too.
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Greg_e
Posted on Friday, June 24, 2011 - 11:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Siemens Deka 4 for the later (found a post from EricZ about an upgrade he did). Not sure of the flow rate though, guessing 46lb/hr would work with a little tuning.

Still no idea about the early 03 XB9 injectors. I think I have injectors for an XB12 that I can compare with or maybe I will just have to put my 12 throttle body on and use the injectors that we know about.
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Brother_in_buells
Posted on Saturday, June 25, 2011 - 07:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

found this thread with a bmw 1150 injector part number
http://www.badweatherbikers.com/buell/messages/327 77/80038.html
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Greg_e
Posted on Saturday, June 25, 2011 - 12:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

From what I have gathered, it appears that stock injectors are about 30 to 32lb/hr EV6 type. I need to pull some injectors today and measure as well as check the connectors. I think the greatest selection will be with the "US Car" type of connector which may require an adapter to work with the Buell harness (adapters are everywhere so not a big deal).

It also appears that despite the manufacturer stamped on the injector, there are two main real manufacturers - Bosch and Siemens. Looking at the Siemens fuel products PDF, it also appears that our fuel pumps are made by Siemens and that they have many in tank designs that might work on our bikes as well as replacement pumps to rebuild these parts.

And in the performance world it seems that the Siemens are far more popular than Bosch, it also seems that the 48mm is more popular for the chevy based upgrades that I've mostly run across on the web.

(Message edited by Greg_E on June 25, 2011)
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Greg_e
Posted on Saturday, June 25, 2011 - 06:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

OK, here are some pictures. 2003 XB9 injectors are roughly 49mm long, newer style are roughly 33mm long which pretty much contradicts everything I've found. The newer style clearly have Siemens Deka stamped into the body and also have the directed spray nozzle.




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Greg_e
Posted on Saturday, June 25, 2011 - 11:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I sent those pictures to http://fuelinjectorconnection.com/shop/ and got a reply that the shorter type are no longer produced but that he could supply a Harley type that should work in either 28 or 32 pound per hour. He also said the early style is a Bosch and that he has a replacement that uses a different connector and has an adapter cable, also in the 28 to 32 pound range. If you want one and want to avoid the Harley dealer, there is a place to get them.

Another note is that the older style has an updated part number, search the forums if you want to order it from Harley.
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Rotor
Posted on Tuesday, June 28, 2011 - 05:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

xb9 injectors = 4 spray direct down

xb12 injectors = 1 spray direct on the intake valve ( to cold it ). front and rear injectors are different , one spraying to front the other to rear

(Message edited by RoToR on June 28, 2011)
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