How fast with 83's?

[325DR]

My injector duty cycle is hitting 100% running 10.0x's with 72lb injectors. Are 83's enough for mid-high 9's or should I go to 95's?

 

[Chris McDade]

I would say 9.60's to 9.70's. Any faster I would go bigger.

Good luck.

 

[325DR]

Thanks Chris.

Which is going to limit me first:

83's or a double pumper (walbro 340's)?

 

[Race Jace]

I have gone 9.83 with stock fuel lines and a double pumper.

 

[disco stu]

At least I'll know about where my 75's will run out. Thanks.

 

[top gun]

I went 9.50's with 83's stock fuel lines and a ATR double pumper. My duty cycle was 88 to 90 percent. I have stepped up to the 96 lb injectors since then.

 

[325DR]

Thanks guys.

Dave - do the 96's seem harder to tune? Is low rpm/idle still acceptable?

 

[top gun]

The idle is fine, I had to rework some of the numbers on the tip in. If you have to buy new injectors just go with the 96 lbs and be done for a while.

 

[Blown&Injected]

for a while!!! as in when you max them out :biggrin:

 

[lazaris]

I went 9.50's with 83's stock fuel lines and a ATR double pumper. My duty cycle was 88 to 90 percent. I have stepped up to the 96 lb injectors since then.

Are you still using the double pumper?

 

[top gun]

Are you still using the double pumper?

Since I planned on running quicker than 9.50's I stepped up to a Weldon 2025.

 

[lazaris]

Its good to know, many people under estimate how far they can go.

Since I planned on running quicker than 9.50's I stepped up to a Weldon 2025.

 

[325DR]

Dave which 96's do you have? Delphi?