jetting for turbo zx9? - Page 2 : KawiForums.com Kawasaki Forums: Kawasaki motorcycle forums

maliboost · 05-09-2009, 01:33 AM

Quote:

Originally Posted by kawi9

Hi Maliboost,

I already help you on another forum when you sarted your turbo project. I see you have do many progress. Nice. I think i can help you. I tuned alone my Turbo 9 and i have Factory pro race kit too. Don't wait the help from Factory. I already wrote to Factory for some support and they never wite me back

.

First, I recommand you to start with less boost you can. If you can go with 6 psi. Because, turbo bike is very easy to blown the motor, if you have bad jetting and you are lean (+12:1 A/F).....you will blow the motor.

What is your motor setup exactely ? I remember you bought J.E. forged turbo piston. But what is the compression ratio now ?

What is your cam degree ?

Have you Wideband gauge ? EGT gauge ?

have you pressurized your carbs with pitot tube ?

Do you tune with fuel pump ?

I waiting your answers.

what forum was that on, i remember speaking with you, i need to go over those messages

the pistons are 10:1 with the thermal coating on top and the upgraded pins

cams are in as stock, no adjustable gears

i have an aem wideband

running a walbro 255lph pump and an aeromotive rising rate regulator

will be using pitot tube, i was hoping you'd chime in, i have it almost together and am just waiting on payday to order my oil feed and get my main jets

i will be running on the stock wastegate setting at first before i turn it up, i think its 8psi

i remember you told me what size pitot you were running, i just cant remember what forum that was on

kawi9 · 05-09-2009, 10:14 AM

I spoke with you on dragbike.com

What the fuel will you run with your set up ? for street or drag ?

When you rebuilt your motor with J.E. turbo piston. Have you stay with the same thickness head gasket ?

With 10:1 i recommend you to run no more 10-11 psi with pump fuel and W/M. If you want go more boost put C16 fuel. I have 2 turbo motor, one with J.E. forged turbo pistons 9:1 but i put a spacer for drop the compression to 8:1 and redegree cam and the second motor 9,75 :1 all stock motor, but i have ceramic caoting on the pistons and redegree cams. I run 10-11 psi on fuel pump intercooler and water/methanol.

For jetting your carbs, if you have Factory race kit, put emulsion tube, adjustable needle to the second clip on the top and with your setup with 8 psi boost the main jet will be roughly 135. I think it's a good base setup for start with 8 psi. You will need maybe fine tunning. Test your west gate before go run. Put a air hose with regulator and a gauge and connect to the wastegate. Up the pressure slowly and check at what pressure the wastegate begin to open. You will know the pressure of the wastegate.

I think you will run with W/M. The methanol will affect the A/F and the size of jet too. Remember that when you will tune your carbs.

The problem with turbo and carbs you must to adjust the main jet with full throttle and full boost and you will are on rich side without boost on bottom end on full throttle. I try many and many times and i try again to resolve this problem for improve the bottom end, but it's not perfect. And this problem up more when you run on high boost. Because your main jet is bigger with higher boost.

I have 2 setup of boost with boost controler, solenoid and a switch. The problem with carbs you must tune the carbs (main jet) for higher boost stage. When you run on low boost stage, you are too rich and the bike don't run very well. Because your carbs are setting for run with higher boost stage.

Just before put back my bike last year, i try another way for have 2 power stages. I have a dyna 2000 ignition. I put a switch for retarded the ignition. On the first stage, i put the retard (-12 deg.) and second stage full timing on the same boost (10 psi). The result it's work great, because the ignition don't affect the A/F, but you have less power on first stage with retarded ignition. I made a dyno run on my Veypor and on the fisrt stage a lost 32 whp at 10 psi and -12 deg.

My pitot tube is 10mm out side, 8mm in side and the hole is 4mm. I try many holes and 4 mm it's the best for my setup.

Can you show more pics on your set up. I would like to see where you are in your project and it's more easy for help you when i see and i can tell you if all is good. Thanks

Sorry if you don't understand all what i tell you. Let me know, i will try explain better. English is not my first language.

maliboost · 05-09-2009, 12:42 PM

Quote:

Originally Posted by kawi9

I spoke with you on dragbike.com

What the fuel will you run with your set up ? for street or drag ?

When you rebuilt your motor with J.E. turbo piston. Have you stay with the same thickness head gasket ?

With 10:1 i recommend you to run no more 10-11 psi with pump fuel and W/M. If you want go more boost put C16 fuel. I have 2 turbo motor, one with J.E. forged turbo pistons 9:1 but i put a spacer for drop the compression to 8:1 and redegree cam and the second motor 9,75 :1 all stock motor, but i have ceramic caoting on the pistons and redegree cams. I run 10-11 psi on fuel pump intercooler and water/methanol.

For jetting your carbs, if you have Factory race kit, put emulsion tube, adjustable needle to the second clip on the top and with your setup with 8 psi boost the main jet will be roughly 135. I think it's a good base setup for start with 8 psi. You will need maybe fine tunning. Test your west gate before go run. Put a air hose with regulator and a gauge and connect to the wastegate. Up the pressure slowly and check at what pressure the wastegate begin to open. You will know the pressure of the wastegate.

I think you will run with W/M. The methanol will affect the A/F and the size of jet too. Remember that when you will tune your carbs.

The problem with turbo and carbs you must to adjust the main jet with full throttle and full boost and you will are on rich side without boost on bottom end on full throttle. I try many and many times and i try again to resolve this problem for improve the bottom end, but it's not perfect. And this problem up more when you run on high boost. Because your main jet is bigger with higher boost.

I have 2 setup of boost with boost controler, solenoid and a switch. The problem with carbs you must tune the carbs (main jet) for higher boost stage. When you run on low boost stage, you are too rich and the bike don't run very well. Because your carbs are setting for run with higher boost stage.

Just before put back my bike last year, i try another way for have 2 power stages. I have a dyna 2000 ignition. I put a switch for retarded the ignition. On the first stage, i put the retard (-12 deg.) and second stage full timing on the same boost (10 psi). The result it's work great, because the ignition don't affect the A/F, but you have less power on first stage with retarded ignition. I made a dyno run on my Veypor and on the fisrt stage a lost 32 whp at 10 psi and -12 deg.

My pitot tube is 10mm out side, 8mm in side and the hole is 4mm. I try many holes and 4 mm it's the best for my setup.

Can you show more pics on your set up. I would like to see where you are in your project and it's more easy for help you when i see and i can tell you if all is good. Thanks

Sorry if you don't understand all what i tell you. Let me know, i will try explain better. English is not my first language.

I can understand you just fine, always have been able to, you make more sense than a lot of native eglish speakers

thanks for the advice on the jet kit, i was lost. also what kind of air fuel ratio do you aim for under boost

kawi9 · 05-09-2009, 01:11 PM

For turbo setup the air fuel must be always under 12:1 on full boost and full throttle. The fisrt and second years, i ran 11,5-11,9:1. The third year, i tune with A/F and EGT and i tuned 11-11,3:1 My EGT is better with this A/F and stay safe for top speed run.

Check this video. You can see my EGT gauge. It's the gauge over the speedometer and show the temp in degree C (815 C = 1500 F). With turbo the EGT will be under 1600 F. I ran full throttle at 8psi on pump fuel 91 for 1,5 mile and more if i want.

http://user.streetfire.net/video/ZX9...eed_196404.htm

Waht fuel do you use ? fuel pump ?

maliboost · 05-09-2009, 05:12 PM

Quote:

Originally Posted by kawi9

For turbo setup the air fuel must be always under 12:1 on full boost and full throttle. The fisrt and second years, i ran 11,5-11,9:1. The third year, i tune with A/F and EGT and i tuned 11-11,3:1 My EGT is better with this A/F and stay safe for top speed run.

Check this video. You can see my EGT gauge. It's the gauge over the speedometer and show the temp in degree C (815 C = 1500 F). With turbo the EGT will be under 1600 F. I ran full throttle at 8psi on pump fuel 91 for 1,5 mile and more if i want.

http://user.streetfire.net/video/ZX9...eed_196404.htm

Waht fuel do you use ? fuel pump ?

our pump unleaded is 93 here, i can get 110 leaded in the next town at the pump

and up to 118 rocketbrand at the speed shop, 60 dollars for 5 gallons, ouch

this is the pump http://www.bmotorsports.com/shop/pro...roducts_id/443

kawi9 · 05-10-2009, 09:12 AM

93 fuel pump is better than me. I have only 91 in my town.

What is your progress in the building turbo kit ? I would like to see pics of manifold, plenum, engine w/m system, etc. Thanks.

maliboost · 05-10-2009, 10:45 AM

Quote:

Originally Posted by kawi9

93 fuel pump is better than me. I have only 91 in my town.

What is your progress in the building turbo kit ? I would like to see pics of manifold, plenum, engine w/m system, etc. Thanks.

well i lost the charger to my camera, i will use someones elses camera when i get done, i'm just about finished, this is what i have to finish up as soon as i get my next paycheck

-remote oil filter needs to be bought
-turbo oil feed and return
-need to weld return fitting in my fuel tank
-install pitot tube in my plenum and run vacuum lines to my wastegate, fuel pressure regulator and blow off valve
-get the jets and put the carbs back on
-air filter for turbo

other than that its just bolt the manifold and plenum on, i just got done installing all my relays and wiring for my pumps, need to mount my wideband gauge and my indicator light for my water injection, oh and find a chain press to borrow or buy a clip masterlink so i can get the bike to the dealership to have them install

kawi9 · 05-10-2009, 04:04 PM

Ok, show me the pics when you will have camera.

Could you tell me what is the minimum fuel pressure of your areomotive regulator ?

I suggest you don't welding the pitot tube in the plenum. Put silicone for fix the pitot tube. Because if you want to change the hole for fine tuning, you can change the pitot tube for another one. I tested the silicone under pressure (30 psi) without problem.

maliboost · 05-10-2009, 08:24 PM

Quote:

Originally Posted by kawi9

Ok, show me the pics when you will have camera.

Could you tell me what is the minimum fuel pressure of your areomotive regulator ?

I suggest you don't welding the pitot tube in the plenum. Put silicone for fix the pitot tube. Because if you want to change the hole for fine tuning, you can change the pitot tube for another one. I tested the silicone under pressure (30 psi) without problem.

http://www.jegs.com/i/Aeromotive/027...0002/-1?CT=999

3-20psi with the installed spring, i'm hoping 3 will be low enough

kawi9 · 05-10-2009, 08:57 PM

It's will be ok. But the best is 1-5 to 2 psi. The stock fuel pressure spec is 1.6 to 2.3 psi. I tested the fuel needle valve and they can close until 5 psi.