stock 1jz injectors and a single?

[86_sports_1jz]

how much boost can i run w/ stock 1j injectors on a single? will it depend on the turbo size?

 

[Van Diesel]

it will depend on the turbo. My GT3040 kit maxed out the stock injectors @ 1.2 bar @ 90% injector duty. <===not safe.

 

[Ric]

Boost means nothing... its not a measure of power.

Stock injectors can safely push around 350whp without going 90%+ duty cycle.

Any single can run on stock injectors, you just have to adjust the boost level accordingly to the size of the turbo so your not killing your engine.

I'm on a GT40-88 (65mm inducer). I'm on 12psi with 550's, and the SAFC2 correction level is -30%.

So using simple thinking.. at least on my turbo, about 10psi would be the max safe boost limit on stock injectors. Using a smaller turbo would let you run more boost like Van, but you would still be stuck at around no more then 350ish whp.

 

[86_sports_1jz]

okay that makes some sense thanks

 

[87nasupra]

NOT trying to steal your thread but.......550cc injectors w/ct26 57 trim ( on driftmotion single ct adaptor manifold ) and upgraded fuel pump on 93 octane.......Would it work correctly? Will it work at all ?

 

[oscolivar1]

NOT trying to steal your thread but.......550cc injectors w/ct26 57 trim ( on driftmotion single ct adaptor manifold ) and upgraded fuel pump on 93 octane.......Would it work correctly? Will it work at all ?

You expect it not to work???
Be a little more specific.

If it helps it's all about the TUNE!
i suggest you do some research.

 

[foreverpsycotic]

NOT trying to steal your thread but.......550cc injectors w/ct26 57 trim ( on driftmotion single ct adaptor manifold ) and upgraded fuel pump on 93 octane.......Would it work correctly? Will it work at all ?

stock or 440s should work better than 550s, you will be pulling alot of fuel with the 550s.

 

[86_sports_1jz]

where could i get some stock jdm 2jz 440s?

 

[cbutler]

Boost means nothing... its not a measure of power.

Stock injectors can safely push around 350whp without going 90%+ duty cycle.

Any single can run on stock injectors, you just have to adjust the boost level accordingly to the size of the turbo so your not killing your engine.

I'm on a GT40-88 (65mm inducer). I'm on 12psi with 550's, and the SAFC2 correction level is -30%.

So using simple thinking.. at least on my turbo, about 10psi would be the max safe boost limit on stock injectors. Using a smaller turbo would let you run more boost like Van, but you would still be stuck at around no more then 350ish whp.

What's the relationship between boost level and duty cycle of the injector.

 

[Ric]

None.

Don't make over 350whp on stock injectors and you'll never have a problem with your motor.

 

[annoyingrob]

My car made 315whp at stock boost (at about 7k), 12.5:1 A/F, and hit 90% duty cycle at 7500. no idea what the fuel pressure was though, I think about 35-40psi base.

 

[kikwear002]

See the formula on the bottom, thats what i use to see if injectors would be ideal. Give it a try.

 

[scottiedawg66]

http://www.iroczone.com/calcs/injectorsize.htm .65 for bscf or whatever that acronym is. The rest is self explanatory.

~scott

 

[Ric]

I have dyno charts to prove.

Open downpipe 1JZGTE, stock cams, stock twins @ 20psi, stock TT soarer fuel pump. 10:1 a/f ratio

310whp with the a340e

 

[OneJoeZee]

Why did it take you 20psi to make 310hp?