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BIKELAND > FORUMS > ZX-14.com > Thread: How much boost will it Handle? NEW TOPIC NEW POLL POST REPLY
BlackMagic14


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posted April 16, 2012 02:10 PM        
How much boost will it Handle?

09 ZX14 10:1 Billet pistons, and Carpenter valve springs. Dont want to pull anymore timing and want to stick with pump gas. Also stock injectors...

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smokinZX14


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posted April 16, 2012 02:15 PM        
PM Justoyz2 he has my old 2008 ZX10 with a turbo ... he may be able to help you
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BlackMagic14


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posted April 16, 2012 02:33 PM        
Smokin I will look him up but this is a ZX14, not sure if you read it correctly..
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01smokes


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posted April 16, 2012 02:44 PM        
Stock motor on e85 took 18psi and finally melted a piston. Pump I wouldn't trust over 7psi built motor or not. It's just not worth it to hurt a motor, fuel is cheap compared to motors
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1badzx12r


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posted April 16, 2012 03:26 PM        
boost it till you kill it then back it off a 1/4 turn ..
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BlackMagic14


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posted April 16, 2012 03:28 PM        
Hmm I was thinking of
Running 8psi with a pretty conservative tune

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1badzx12r


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posted April 16, 2012 03:48 PM        
quote:
Hmm I was thinking of
Running 8psi with a pretty conservative tune



you can .. but theres really no point in 8lbs when you can make the same with 5lbs ..because of choking it down to be safe..
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Oz Booster


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posted April 16, 2012 04:30 PM        
If you have concerns about detonation even a basic water injection system squirting into the compressor will raise your safety another couple of psi

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Bad in Black


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posted April 16, 2012 05:40 PM        
quote:
Hmm I was thinking of
Running 8psi with a pretty conservative tune
I'm set up to run 8 on my stock motor with no timing pulled and only boosting hard with VP 100 street blaze fuel. But I'm also at 5000ft up so I'm really only getting a little over 6 true psi of boost on my gauge. I would pull timing or run water injection if I was running alot at or near sea level. I thought about raising my boost some for my elevation to make up for the loss, but my riding can vary in elevation a lot, so have left it alone for now. I would think with 10:1 comp pistons you could run more than 8 with some timing pulled? I'd think 10 would be do-able with some timing pulled, a good map and good fuel? I'm going to look into a water injection system, I like the sound of the extra safety.

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BlackMagic14


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posted April 16, 2012 06:26 PM        
What is the easiest and most effective way to pull timing on a 14 without spending 350 on an ignition module or an sb6
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1badzx12r


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posted April 16, 2012 07:08 PM        
http://www.ebay.com/itm/00-2000-ZX9R-ZX-9-R-ZX9-EFIR-Timing-Retard-EAR-ZX9R-ECU-CDI-Computer-Brain-/380409995284?hash=item589233e014&item=380409995284&pt=Motorcycles_Parts_Accessories&vxp=mtr



i know some will say these are junk.. but i had good luck with them
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Bad in Black


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posted April 16, 2012 07:29 PM        Edited By: Bad in Black on 17 Apr 2012 03:34
Schnitz quit making those efir electronic timing retard units.....I think I heard they had issues with quality control from the makers. I've heard nothing but good about them from folks that use them tho....ZXBob ran one forever on his turbo 14. Wish I could find one somewhere. Rob, hook me up brother

I know its not the best way to go, but I'd prolly just get an advance/retard wheel and do a static timing retard. You'll lose some off boost power, but its safe, cheap, simple and foolproof. And with all the power you'll have anyway, you can afford to give up a bit off-boost

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justoyz2


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posted April 16, 2012 08:11 PM        
Black Magic,

On a stock motor zx14, you can run 8 psi on good gas mix (c16/93 on a 50/50 mix).
I did this for a long time, I used a normal 1 to 1 fuel regulator and used my map to manage the fuel consumption. I will add that you need to use an external fuel pump w/air gap type fuel cap(not the stock one).....my tank started vapor locking and cause me to hurt a piston. I wen to the set I mentioned and didn't have a problem after that.

You mention billet pistion and valve springs... are they high compression pistions or low compression pistons? If they are low compression you can safely run 14 to 16 psi on turbo piston and stock rods, if they are high compression pistion, I wouldn't go past 12 psi on straight c16. This will require timing to be pull, not much the fuel will help keep things cool. Also q16 is very good and don't require timing removed as well

If you ran straight c16 you could get away with 10 psi.... Call Chris Jones... (Jones Motorsport) he is a member here. He is the expert on the zx14 turbo applications.
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BLK ICE


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posted April 16, 2012 08:22 PM        
quote:
http://www.ebay.com/itm/00-2000-ZX9R-ZX-9-R-ZX9-EFIR-Timing-Retard-EAR-ZX9R-ECU-CDI-Computer-Brain-/380409995284?hash=item589233e014&item=380409995284&pt=Motorcycles_Parts_Accessories&vxp=mtr



i know some will say these are junk.. but i had good luck with them

+1, but only for 06-07 zx14s.
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rspauldi


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posted April 16, 2012 08:31 PM        
Justtoyz2.. can you please elaborate on the "external fuel pump w/air gap type fuel cap"? I am sorry but i didn't understand. is it a different fuel cap, or some different type of ventelation?
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BlackMagic14


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posted April 17, 2012 09:33 AM        
It is running a Bosch external fuel pump with 10:1 wossner pistons and a 3:1 pressure regulator. I was thinking 8psi on pump gas without timing pulled would be safe with the lower compression 10:1 pistons.
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1badzx12r


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posted April 17, 2012 02:15 PM        Edited By: 1badzx12r on 17 Apr 2012 22:15
quote:


I know its not the best way to go, but I'd prolly just get an advance/retard wheel and do a static timing retard.



i tried this a ways back .. and what i found was setting the retard pass -4 degrees made the bike hard to start and idle rough.. on boost it was fine .. but it doesn't cost but $60.00 to try
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Bad in Black


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posted April 17, 2012 02:35 PM        
quote:
quote:


I know its not the best way to go, but I'd prolly just get an advance/retard wheel and do a static timing retard.



i tried this a ways back .. and what i found was setting the retard pass -4 degrees made the bike hard to start and idle rough.. on boost it was fine .. but it doesn't cost but $60.00 to try
Good info Rob thanks How did the -4 degrees work for you? Was it a big hit to off boost power? I'm thinking of maybe doing that for a little extra safety, and maybe bump the boost up a lb or 2 for my elevation. Not sure how much safety -4 degrees would give me tho, even at 8lbs at sea level or close to it. I do ride down close to sea level on occasion from my home town elevation of about 5000ft.

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Bad in Black


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posted April 17, 2012 02:41 PM        
quote:
It is running a Bosch external fuel pump with 10:1 wossner pistons and a 3:1 pressure regulator. I was thinking 8psi on pump gas without timing pulled would be safe with the lower compression 10:1 pistons.
That sounds very safe to me, I'd do it Several turbo kit makers told me 8psi on a stock motor with stock compression and no timing pulled was fine with a good tune and good fuel. That still makes me a little nervous tho, but with your set-up I'd rock 8lbs all day

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kawpower


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posted April 17, 2012 03:43 PM        
Call Chris he is the man on turbo 14s,he sent me a kit and talked me through the biuld ,i couldnt be more happier, as for the gas cap the stock cap is made to let vapor out not to equalize pressure of an external high performance pump ,u need to let air in and vapor out, i modded my stock cap it works great but u can just buy a vortex cap too.
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NINJA12


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posted April 17, 2012 06:18 PM        
i run a 8psi spring on the street with 93.
I don't usually run it near that level on the street.
JE 9.5 piston and carpenter valve springs zx14 .
i run straight c16 at track.

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BlackMagic14


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posted April 17, 2012 06:25 PM        
So you do run it at 8psi on pump gas? What kind of power does it make?
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