Allanski

LSX engine with custom EFI injection rails on high rise intake and Squash return fuel system.
Just destroyed 3rd engine

First was piston failure (wiseco) - front
Second was cylinder wall failure front -(diamond pistons)
Third both front pistons broke. New engine shop says ran lean (partial my fault drove after overheated after belts thrown off supercharger and water pump) Wieseco pistons

I'm not a pro anything - just trying to go very fast.
But I see a pattern with each engine failure being front cylinder failures.
I heard most problems are rear cylinders, so why are the front failing??
Also I have 2000 ID injectors!

These are my areas of question - any ideas?
tune - tuner said many parameters have to be manually changed for bigger injectors
squash fuel set up
fuel rail intake line location such that front cylinders are starving
pressure ie voltage or other sending problems
actual fuel filters

If you have a valid suggestions please let me know
Thanks poor boy

AgFormula02

iTrader: (13)

three things to start with

Fuel:
How is fuel set up? Y to the rails then out to a regulator is optimal
Also: have you moved injectors around?
Test them and label their cylinders.

Airflow:
How is the air entering the cylinders? What is your set up?

Temp:
Doing anything special with steam ports?



Did failures happen at WOT? Is this a race set up?
What is your pump and fuel lines?

Maybe the whole fuel system is sub par and you keep finding the weakest link.