entropy
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posted December 03, 2006 03:26 AM
injectors back from RC
received my '00 injectors back from RC:
before/after cleaning (cc/min)
331 / 336
311 / 334
328 / 335
319 / 335
I am still chasing my lost 15-20 hp, and will try the reconditioned injectors as soon as I put the motor back together. (it didn't break, i was just double checking that nothing was sketchy inside)
Anyone know a good variable pressure regulator, so I could jack up the pressure and see what happens (on dyno)?????
I'd like to bring the duty cycle down to 80%...
Doug Meyer; you have a PM 
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Y2KZX12R
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posted December 03, 2006 04:50 AM
Wow that one injector was really low Karl. And seeing how the dynojet setup takes an average of all 4 cylinders that one cylinder was quite lean I bet.
I gotta send mine out this winter.
On the regulator. You might be able to make a new "hat" for the regulator. Or you can run the fuel pump with the throttle bodies off and the system hooked up and use a C clamp setup and "crush" the VERY CENTER of the hat to the pressure you want. I've done that before also, but you beed to go very slow and carefull. You will need to see what the "spring back" is. Example: you slowly bring it up from 42 psi to 44 psi and then remove the tension on the clamp and see where the bressure drops back to. Maybe 43 psi. Do that in small increments. Bring it to 47 and remove the tension and it drops back to 46 or so.
But you need a target psi before you even start the proccess.
I could crunch some numbers for injector scaling and figure out how many psi increase you will need for each # per hour increase.
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VincentHill
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posted December 03, 2006 06:12 AM
Pierre raised the pressure like Y2K Explained
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Y2KZX12R
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posted December 03, 2006 08:11 AM
I usually dont post or post recomend tricky stuff like this, I dont want anyone fucking up thier bike. Its not somthing people should be doing really.
Maybe I should make some adjustable hats. That would be much safer.
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MadMike
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posted December 03, 2006 08:17 AM
Thanks for the info...
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GUNNER
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posted December 03, 2006 09:50 AM
quote:
Wow that one injector was really low Karl. And seeing how the dynojet setup takes an average of all 4 cylinders that one cylinder was quite lean I bet.
I gotta send mine out this winter.
On the regulator. You might be able to make a new "hat" for the regulator. Or you can run the fuel pump with the throttle bodies off and the system hooked up and use a C clamp setup and "crush" the VERY CENTER of the hat to the pressure you want. I've done that before also, but you beed to go very slow and carefull. You will need to see what the "spring back" is. Example: you slowly bring it up from 42 psi to 44 psi and then remove the tension on the clamp and see where the bressure drops back to. Maybe 43 psi. Do that in small increments. Bring it to 47 and remove the tension and it drops back to 46 or so.
But you need a target psi before you even start the proccess.
I could crunch some numbers for injector scaling and figure out how many psi increase you will need for each # per hour increase.
This is an old Buick Grand National trick we used back in the late 80s it works
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01zx12r
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posted December 03, 2006 05:55 PM
Another solution
Karl, Remember when I talked about the DL-32 and watching a/f ratio on each cylinder? This is a prime canidate for the ability to gather all the information you can to resolve the problem.  Chris
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entropy
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posted December 04, 2006 02:19 AM
Guys,
thanks for all the info!!!
Chris, I'd love to do the DL-32 along with a box to control AF on EACH cyl but that's too rich for me these days. I envy you!
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Megabyte
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posted December 04, 2006 02:59 PM
quote:
Guys,
thanks for all the info!!!
Chris, I'd love to do the DL-32 along with a box to control AF on EACH cyl but that's too rich for me these days. I envy you!
I don't know about the rest of the guys, but I envy your ability to build, mod, diagnose, solve, and rebuild your own bike. I used to rebuild and modify my cars (z28 and roadrunner), but never had the nerve to tackle my bike... 
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entropy
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posted December 04, 2006 03:22 PM
 Edited By: entropy on 4 Dec 2006 15:23
Mega,
my only true and proven (again & again) ability is to break my shit and i am a world class expert at that!
guys like 01xz12r are TRUE experts, and thankfully he shares his hard won knowledge. 
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01zx12r
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posted December 05, 2006 10:28 AM
Ok ok
Karl, You and I are no different. In fact everyone that decides to build what they want no matter how fast or slow should learn something every day. Its the different ideas from so many different individuals that makes this site different from the others. Everyone is willing to help and give input in a positive direction no matter location or even brand. Rob Muzzy, Karl, Vincent and to many others to list have done the R&D to smooth the road for the rest of us. Anyway thanks to all who make this site so great.
Karl, we need to talk if youre ready to put the engine together. I need to get an item shipped to you. Chris
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Megabyte
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posted December 05, 2006 11:50 AM
quote:
Karl, You and I are no different. In fact everyone that decides to build what they want no matter how fast or slow should learn something every day. Its the different ideas from so many different individuals that makes this site different from the others. Everyone is willing to help and give input in a positive direction no matter location or even brand. Rob Muzzy, Karl, Vincent and to many others to list have done the R&D to smooth the road for the rest of us. Anyway thanks to all who make this site so great.
I couldn't have said it better. Nearly everything I've learned over the last 6 years about making my bike faster has been because of this site. I am extremely grateful to the wealth of information and helpfulness. You don't get a 1361 that makes 212 rwhp w/o making good and informed decisions.
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TRNorBRN6001
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posted December 05, 2006 01:22 PM
Just curious what should the duty cycle be for best performance/longevity/tuneability?
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entropy
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posted December 05, 2006 04:04 PM
quote:
Karl, You and I are no different. In fact everyone that decides to build what they want no matter how fast or slow should learn something every day. Its the different ideas from so many different individuals that makes this site different from the others. Everyone is willing to help and give input in a positive direction no matter location or even brand. Rob Muzzy, Karl, Vincent and to many others to list have done the R&D to smooth the road for the rest of us. Anyway thanks to all who make this site so great.
Karl, we need to talk if youre ready to put the engine together. I need to get an item shipped to you. Chris
Yep, this site is great! Leads me into learning stuff I NEVER would have attempted otherwise.
BUT, You, Chris, and the other experts are way differnt than me. You guys have many, many years of experience which are building upon on a daily basis. I'm still trying to learn the basics.
I'm still a few weeks away from asembling the motor, got a couple major parts being tweaked.
I'll call you tomorrow, yep.
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entropy
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posted December 05, 2006 04:09 PM
quote:
Just curious what should the duty cycle be for best performance/longevity/tuneability?
Gary, I am also curious about this and the input i get says hi 70's, lowest 80's ought to be fine. Hey, one big name guy has no problems with mid 90's (on a Busa), and I am not even real sure if duty cycle is my problem. I just wanna make SURE it isn't and am aiming to get littler #'s on my 80/100% fuel columns.
I'd sure like to hear some of the heavies weigh in on this topic.
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entropy
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posted December 05, 2006 04:11 PM
BTW, I did get a good tip on the regulator and if anyone gets serious out playing with one just contact me (but you might wanna wait until my results are in so you don't waste yr $$$)
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entropy
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posted December 05, 2006 04:12 PM
quote:
quote:
Karl, You and I are no different. In fact everyone that decides to build what they want no matter how fast or slow should learn something every day. Its the different ideas from so many different individuals that makes this site different from the others. Everyone is willing to help and give input in a positive direction no matter location or even brand. Rob Muzzy, Karl, Vincent and to many others to list have done the R&D to smooth the road for the rest of us. Anyway thanks to all who make this site so great.
Karl, we need to talk if youre ready to put the engine together. I need to get an item shipped to you. Chris
Yep, this site is great! Leads me into learning stuff I NEVER would have attempted otherwise.
BUT, You, Chris, and the other experts are way differnt than me. You guys have many, many years of experience which you are systematically building upon on a daily basis. I'm still trying to learn the basics.
I'm still a few weeks away from asembling the motor, got a couple major parts being tweaked.
I'll call you tomorrow, yep.
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aliveagain
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posted December 12, 2006 06:07 PM
Just a heads up FYI ,I had my injectors cleaned and flowed by Marrens fuel and found 1 injector running a little low even after cleaning.I bought a used one and just sent it in to see if it was a better match.They said it was clogged solid and couldn't get a before reading.I was told this is not an uncommon thing for an injector thats been sitting to clog up.  matched the other 3 injectors after cleaning.So if you have any spares laying around,send them out before installing.
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NINJA12
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posted December 12, 2006 10:52 PM
glad it worked out for you.
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bossman12r
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posted December 13, 2006 06:58 PM
How much for RC to clean the injectors cost?
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entropy
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posted December 13, 2006 11:34 PM
About $100 to clean them; i don't remember exactly.
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osti33
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posted December 14, 2006 12:13 AM
Maybe I should send mine out this winter. I've never had them cleaned. 
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Y2KZX12R
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posted December 14, 2006 03:01 AM
Yea I'm going to send mine out as well. I think the guys who dont run thier bikes for 4-5 months in the winter will be more prone to injector "dry out" and the deposits hardening up.
Thats just an assumption but very possable.
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NINJA12
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posted December 14, 2006 04:46 AM
I've had the bike run rough like a miss for a minute or so but it cleared with nothing more than a little run time. injector 'dry out'? does not appear to have caused any damage.
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aliveagain
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posted December 14, 2006 08:07 AM
At least none that you could see.2 out of the original 4 had a bad spray pattern and I thought it was running good up top.
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