ok ping happens warmed up, never cold as cold is rich and rich is very cool combustion.
The ping is called more accurately Detonation as that is what it does when lean and hot and the fuel (poor grade) try high octane fuel yet?
The fuel detonates as apposed to normal and simple burning of the fuel.
It also lowers power, due to less time pushing down on the piston,
Im not saying its really lean, Im saying lean and normal from rich and cold, Im saying it can ping at STOICH mixtures, all engines can. and do if CR is wrecked.
Compression ratios.
OK step one on all good turbos is lowered CR. (base NA engine) Like done on Toyota's stock turbo' factory engines,
to that when horrible happens (boost and lean lean out) the detonation ends due to 2 things, (act 1, retards timing, act 2, the natural CR is lower than stock so the flame front cools even faster.
do the pistons have clips on pins? and are loose? some best full floating pistons use, teflon caps on ends of pins, so is safer.
I think you need and electronic sethoscope to find noise like this , its cheap.
ok 150psi I did not know that, sorry, and so is not ping, no way can it ping, unless running Coleman stove gas (lol) Naptha.
this engine has a head boss in the compubustion chamber that cause the AFR mix to pinch and move fast across that pinch point and this prevents PING on the stock engine
until a very hot day flogging it up hill with back of car with 1000 lbs or bricks and EGR goes dead it pings.
otherwise it should never ping
but 150PSI is a pussy cat, there is not enough CR to detonate, fuel,.
so try high octane
or try, moving distributor (spark time freeze jumper set) the and retard to. I'm sure its at 5deg BTDC now, and not at 20.
retard to 0 TDC firing.
if no change its not ping.
its not piston tops full of 1/4" thick carbon, its rebuilt engine,
so use this. a nice electronic stethoscope, (its just mike and amp and ear buds, i chuck the buds, and bet walmart real head phones and OMG what dream.
you can hear flea fart in dust storm. can find bad alternator bearings, bad PS pump bad water pump bad, any thing that spins, or the engine actual
![[Image: steelman.jpg]](http://www.fixkick.com/tools/steelman.jpg)
The ping is called more accurately Detonation as that is what it does when lean and hot and the fuel (poor grade) try high octane fuel yet?
The fuel detonates as apposed to normal and simple burning of the fuel.
It also lowers power, due to less time pushing down on the piston,
Im not saying its really lean, Im saying lean and normal from rich and cold, Im saying it can ping at STOICH mixtures, all engines can. and do if CR is wrecked.
Compression ratios.
OK step one on all good turbos is lowered CR. (base NA engine) Like done on Toyota's stock turbo' factory engines,
to that when horrible happens (boost and lean lean out) the detonation ends due to 2 things, (act 1, retards timing, act 2, the natural CR is lower than stock so the flame front cools even faster.
do the pistons have clips on pins? and are loose? some best full floating pistons use, teflon caps on ends of pins, so is safer.
I think you need and electronic sethoscope to find noise like this , its cheap.
ok 150psi I did not know that, sorry, and so is not ping, no way can it ping, unless running Coleman stove gas (lol) Naptha.
this engine has a head boss in the compubustion chamber that cause the AFR mix to pinch and move fast across that pinch point and this prevents PING on the stock engine
until a very hot day flogging it up hill with back of car with 1000 lbs or bricks and EGR goes dead it pings.
otherwise it should never ping
but 150PSI is a pussy cat, there is not enough CR to detonate, fuel,.
so try high octane
or try, moving distributor (spark time freeze jumper set) the and retard to. I'm sure its at 5deg BTDC now, and not at 20.
retard to 0 TDC firing.
if no change its not ping.
its not piston tops full of 1/4" thick carbon, its rebuilt engine,
so use this. a nice electronic stethoscope, (its just mike and amp and ear buds, i chuck the buds, and bet walmart real head phones and OMG what dream.
you can hear flea fart in dust storm. can find bad alternator bearings, bad PS pump bad water pump bad, any thing that spins, or the engine actual
http://www.fixkick.com