Engine/Transmission (1998.5 - 2002) MAX Boost on ETH

[Diesel Freak]

I have only seen 38 PSI on my truck, what have all you other ETH owners seen?



I think 45-50 psi would be safe before the head floats off. . what do you think?

 

[MCummings]

ETH's have Higher Compression thatn ETC's ?



With my stock HX-35 w/12 housing I would see 40PSI daily.



Merrick Cummings Jr

 

[Mad Max]

40PSI?

Man, I gotta get one of them housings.



MaX

 

[MCummings]

Two sides to every story.



At 37-38 PSI of boost the HX-35 turbo is heating the compressed air to 400*. I don't think the intercooler can sufficiently cool down air that is that Hot, which would mean the motor is still intaking hot air.



My EGT was also insane. 1600*F EASY. 1800* wasn't that hard to do 60-100MPH WOT and 1800*F was there.



At 1400* water temp rises, at 1800* for two seconds water temp raises to the peak of safe range.



I now have a PDR '40 and it cooled the EGT 400*. (From 1800*)



Merrick Cummings Jr

 

[Mad Max]

Thx for the info...

Gotta exercise a gremlin from mine, but a new huffer and bigger injectors would be nice.



MaX

 

[Rob Thomas]

I see 45#'s with mine daily, and yes it is the stock HX-35. EGT's are controlable, except when drag racin' or sled-pullin'. I tow regularly, but no mountains here in Michigan. BTW, I have allready replaced the head gasket,( which I torqued to 130#'s) however it was an oil galley issue, not the compression.



Later, Rob

 

[HC]

And to think, I was worried because I saw 29 psi after EZ and boost elbow. You guys have set my mind at ease - - - I won't worry so much any more about my "lowly" numbers, even if they are 50% higher than stock