just wanted to share with you a customer came in last night for heads cam package it is a Silverado 2014 with 15k km on it, check below the pictures of the pistons the truck has stock tune and no mods of any type.
IMG-20150919-WA0015.jpg
IMG-20150919-WA0018.jpg
if look at the pictures there is a big layer of carbon deposit on the top surface of the piston far away from the injector spray area, another thing is that the intake valve looks like hell with huge deposit of hard carbon layer on it. another inspection shows that the cylinder wall also has some scratches due to this.
what would be the right solution ?
1. oil catch
2. methanol nozzle in the intake to clean this deposit
the Toyota 86 has 4 cylinders however with a total number of 8 injectors 4 direct ones and 4 port ones in order to resolve this issue......bmw also have on injector in the intake also to make sure the intake valves are clean.
and the worst looking ones are the DOD ones which leads me to think why all the failures that were reported they were concerning those particular cylinders could the ECU command to shut of the spark but injectors still work?
I have tuned loads of those trucks and making loads of power with no issues maybe because I have all of them with meth injection in the intake and oil catch, I have done couple of 5.3 stock fuel system only with cam swaps and increase fuel lope and making 700+whp twin turbos.