93hatchy

whats the hottest temp a turbo will normally seen on a honda?what about the manifold?

Carnesd

mad hot why do you ask?

Ravage70

u can touch the mani for a split second and still burn ur first layer of skin
id say thats right around the 9000 degree mark

greasemonkee

At the beginning of the manifold part throttle operations can see up to 1500 deg. F or higher than that, but that is extremely hot.

BLAAST

my turbo honda, when cruising, is around 1250°F
a complete acceleration shifting through all gears will make it 1400°F which is still acceptable.
But When I floor it for a long time in 4th gear, It can get in the 1500°F and then, I let off... Not sure if I want to see what happens if I insist any further than that! Touching the 1500° once in a while is certianly not that harmfull. I have been running the same engine at 25+ psi for over 4 years and it's still top notch.

rudebwoy

are you talking about egt? I have been trying to find out the safe highest number to run but it seem no one knows because the never reply. I run 12-1500*F

93hatchy

ok cool, so no more than 1500 sounds like the hottest the turbo/mani area see's.....thanks guys

BLAAST

Yep! 1500°F is a safe temperature to let off the throttle!! The real theoric dangerous temperature for a stock valvetrain, I don't remember for sure, I think it's 1575°.

greasemonkee

Honestly, I don't know if it's as simple as that. There are too many variables and it also depends on the engine.
The location of the egt probe is the first variable. Ideally, the probe should be half the runner diameter away from the head in the hottest cylinder. Naturally, the farther down you put it, the less it will read. I've always heard for hondas that full throttle operations shouldn't exceed 1250 and part throttle shouldn't exceed 1400-1500. The damage to components is likely cumulative. Take a look at the valves and seats of an engine that has run excessively retarded timing its whole life. The whole valve train will suffer and the springs will weaken over time. In my opinion, 1350 would be the max limit, especially for a boosted engine. Give it some timing or fuel and don't worry about the turbo, it should be able to withstand more than the engine.

93hatchy

i shouldve better described why i posted this question, and that being i was wondering the temperature bc im trying to decide on which metal to use for flanges, mild steel which is good to 2500-2800 degrees or 304ss, both i know will work but i had no idea at all if that area got to 1000 degrees or 50000 degrees, this atleast gives me an idea....