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[Rimjam]

I'm posting my question in this thread thinking more people with knowledge of the classic SERGs will see it.  Moderator  -  if this needs to be moved to the INTAKE thread it's your choice.

I recently scored an MM fuel injection unit at a swap meet.  I noticed the plastic tops on the injectors were not orange like on my SERG or the spare unit I've had for a few years.  The guy selling the unit said it was from a cop bike so the injector tops were black  -  they put more fuel in the engine so it wouldn't overheat as quickly doing urban duty. Was he shooting me a line of crap?  I can't find a part number for injectors on a 2000 police model to compare with my part number (27135-97). Any knowledgable ex or current wrenches out there?  Comparison photos below.

[GregKhougaz]

Very interesting question.  Moved to get you more responses (and you are right, it is an intake question).

[Twolanerider]

This is from recollection only.  I could not find a reference for a different part number for injectors on cop bikes in any parts manual here or the online catalogs.  I also don't recall seeing different injectors on a few old cop bikes I've worked on.

This stuff is now approaching a decade and a half old.  So the recollections aren't absolute.  But I don't recall what you're being told.

[grc]

I don't recollect what I had for breakfast, much less what Harley did on cop bikes in 2000.  The parts catalog only shows one injector part number for all 1999-2001 Big Twins with MM-EFI, including the SERG (27135-97).  Any supposed change for the cop bikes would have been in the calibration, not the hardware.

The information I've seen elsewhere makes me think that guy may have sent you a TB from an Evolution bike.  The SE catalog for those bikes had an upgrade that included higher flow orange (or red) injectors.  I think that higher flow injector eventually became the stock injector when they went to the Twin Cam engines in '99.

See if you can read a part number on the orange (red) and black injectors.  The stock injector for the 1998 Evolution bikes was 27218-95, and the stock injector for the '99-'01 Twin Cam bikes was 27135-97.  The 27218-95 is a lower flow rate injector.

Jerry

[Steve Cole]

There were three sets of injectors used in the MM units. Red top, Black Top and Green top. Now if I could just remember the flow of each of them you would be set. I think that Black were the most common ones.

[grc]

Found this on a different site, not sure about accuracy:
----------
27135-97 (green/red) fits '99-'01 FL and is 29Lb/Hr
27218-95 (black) '95-'98 FL - 21Lb/Hr
----------
Jerry

[Steve Cole]

Here are the Weber part numbers off of the injectors and there colors

Black = IW720 1057/00
Red = IW724 1170/00
Green = IW724 1057/00

If you chase down the part numbers I think you will find that the Red and Green flow the same BUT have different spray patterns. The Black will have a different flow rate. I believe that the Black's were for the EVO's like Jerry has stated. The throttle bodies themselves were all the same as I recall BUT there was a SE43 high flow one for a couple years only. It used a different style injector. Back in the day that induction module was $1000! A stock one was like $1200 too.

[Steve Cole]

Manufacture OHM’s CC/Min Lb/hr

IW724   15.1   300   28.53
IW720   15.1   180   

From a quick internet search

[Rimjam]

Thanks for input on my question.  Checked part numbers on injectors I have  -  matched Steve Cole's numbers exactly.  Internet search (Ronnie's H-D) lists only part number for one year EVO injector (1998) other EVO years list only module part number.  The bottom line is; my 'cop' MM unit is actually a '95-'98 standard EFI part.  Guess I just didn't get kissed on this deal.  Anyone need an EFI for an EVO Bike?

[Steve Cole]

Remember every part of that Throttle body is the same except the injectors. So if you have a MM bike you could swap the injectors and use the rest of it.