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Thread: Color of fuel injectors?

Created on: 04/05/10 09:16 PM

Replies: 3

worroll



Joined: 02/22/10

Posts: 29

Color of fuel injectors?
04/05/10 9:16 PM

What are the color of the injectors on 06-07 ZX14, and on the 08+ ZX14?

I have a ZX14 I bought used, and am trying to trace down a problem, thinking maybe bad fuel injector(s), but want to eliminate the possibility that the injectors were replaced already, but with the wrong part. I have blue injectors with 'EAT286' on one side and 28606ID on the other side. I tried to find pictures, and think that these are correct for the 06, I think the newer ones are green?
Can anyone check there bike and confirm this?

Thanks!

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Hub


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Joined: 02/05/09

Posts: 13719

RE: Color of fuel injectors?
04/05/10 11:22 PM

You are correct, worroll.

I have 3 injectors in hand. I think the year is the one number, the ID is the batch(?) or other coding trivia I have no clue of. This is what I do know from the 3 guys sitting here. One has to be a date code. The other is the jet hole code. Are 286 and 287 two different hole distinctions but the 280 designates the body slash fpm size(?). Again, with the 3 guys reading off to me, it seems like the date is more a federal DOT deal with the rims.

For example, you can read the date code on your mag wheels and can tell by the date. Even old spoke rims were under that law to stamp the rims. This is more you with the scoring card chasing points for show or museum quality restorations.

Anyway, back to your question. Here are the 3 amigos all made by Bosch...

1st T-body: BLUE bodies. These are off my first gen bike. One side reads the 286. Other side reads, 28605ZK. (Note date of sold to public in '06, but build date was late in '05). They are a 10 hole spray pattern.

2nd T-body: GREEN bodies. These are a set of ZX-1000 throttle bodies. One side reads the 287 code. Other side reads, 287078N. I now see I have a set of 2007 ZX-1000 throttle bodies. These have 12 holes for their spray pattern.

3rd T-body: GREEN bodies. These are out of my '08 ZX-14. One side reads the same 287. Other side reads, 2870772. I now walk over, look at the build date of the bike. She reads 9/07 on the frame and sold to me sometime in '08.

As far as reading what throttle bodies and what bike dates pretty much say they match jet holes/body style/build date, where I haven't a clue of the remaining list of coding...

... ZK ~ 8N ~ 72, or your ID code of the above injectors. The last, number/letter ~ letter/letter ~ number/number sequence, all seem more like a batch run?
_______________________________________________________________________________________

If you want to keep going, maybe someone with a Connie could take a peek at their bodies and read off the numbers/letters for you. Kind of build a list for you. If they use the same injector, something like, PartShark's on line parts blow-outs, could have the same part number for the same year and there you go. Fits a Connie or you might have Connie injectors, meaning. But, I think the 280's are more same body, different spray pattern... If I had to guess.


* Last updated by: Hub on 4/5/2010 @ 11:24 PM *



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worroll



Joined: 02/22/10

Posts: 29

RE: Color of fuel injectors?
04/06/10 3:29 PM

Thanks Hub, exactly what I needed. Definitely factory injectors. I would have doubted they were ever changed, just needed to be sure.

You could probably answer another question. If I look at the intake valves thru the throttle bodies, some have excessive carbon build-up (black deposits.) The two outside valves (cylinder 1 and 4) have the most. And the center ones vary. Is that normal for a 6000 mile bike? I think I remember when I did the valve service on my FZ6 at 26,000 miles the valves were near spotless, but not sure if I am remembering correctly. What type of deposits have you usually seen? Most other engines I've ever torn into were high miles so can't really compare.

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Hub


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Joined: 02/05/09

Posts: 13719

RE: Color of fuel injectors?
04/06/10 5:29 PM

If I look at the intake valves thru the throttle bodies, some have excessive carbon build-up (black deposits.) The two outside valves (cylinder 1 and 4) have the most.

Same here. I did notice that and am as curious to get an answer to that one too. I can only assume we run rich like dyno charts say*. The outer banks cool with the cylinders not being as hot as the 2 inner cylinders. Maybe the inner barrels use different maps? I sort of doubt it if carbs never jetted down for the centers; right before we switched to FI? I would have to look back at a 1998 parts manual to find out. I would have to ask RidgeRacer that question, meaning, if the sequential maps might give us that answer on the 14? I pretty much would figure that, 4 bungs set at each header, with 4 wide-bands wired inn, would give us the answer rather than guess at it. Something like that would tell us, because I'm sure the factory will not.

I like reading the story about Russ'is bout with Honda. http://www.rceng.com/faq.aspx But, I sent you to the FAQ page*. Ideally speaking, I would love to hand deliver and return home with my 8 greens to his facility all in one day. Pay extra. All, to have them cleaned, pick his brain a little for one. Because, I have 8 of the same 12 hole-greens, I can then choose the best flow patterns of the 4. If all 8 are consistent, then all the better. Ideal conditions again, I have Russ to eye the best 4, or just look at all 8 running and tell pretty much what to look for, overall. Then install them back into the 15° t-body. I'm not about fly-gut my set of [20°] '08's. If you have time to read how Russ dove into FI, you'll see what we are up against as far as answering our own questions.

You're welcome, wor. Too bad we can't figure out that cc body size [yet]. I'm hearing 330cc and 440cc. But my research never has shown a value of 330. I see 440cc, but the next size down is well under 330cc as a stepped incremental injector [replacement] size.



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