by handymanny01 » Sun Jan 26, 2020 9:09 pm
No one is saying you aren't seeing 1200 Celsius on a gauge man,,, But if you are , then you are a solid 200c degrees past a compound turbo tractor pull sled with STEEL pistons,,, They run to aprox 1900 Fahrenheit (1037 C) as an absolute max,, and for about 5 seconds,,, As an qualified engineer I can say 1200 degrees Celsius is literally WHITE HOT ,,, so if ya are managing this ,, then you're one of a kind,,, well done to ya! The casting actually looses all strength at that temp,,, and will NOT hold even 20 psi,,, I know this cause our workshop race car (turbo hayabusa powered) blew through its steam pipe manifold at waaaay less than that,,, estimated 900 degrees , 18psi,, Due to an injector failure causing extreme lean burn,,, I'd personally be checking voltage at gauge,, weird dual battery hook up causing 24 volt supply maybe?? 6 volt gauge? Wrong pyro probe? Dunno,, Or at least removing pyro and proofing it against a known temp... all that aside,,, the guys doing the asking on here are just after good honest advice,,, and telling people you can run 1200 degrees Celsius all day is not good honest advice,,, Especially when the thread is about the 4jg2 and what horsepower you can get out of it safely... I made 95kw at wheels out of the old 4jg2,, 20psi / 650degrees celcius , and put the dyno graph up for all to see,,, And it was very reliable,,, So let's keep it on point and civil eh?