blew the engine again

[Ken in AZ]

craZed wrote: I have my egt sensor in my turbine housing.
Idle ~800f
Cruise @ 70mph ~1150f
Cruise @ 100mph ~1300f
I have seen as much as 1500 on a pull.
This is with a JWT tune.

awe fawk then....I have no idea

1250F sustained pre-turbo is all I ever suggest, any hotter and you melt stuff on a diesel although I have pegged my 1500F gauge a few times

[craZed]

He is recording ~ 1800*f
From what I have researched that is past the high side.

[Az4u2c]

Maybe there is a pathfinder or truck that came with a high rear-end ratio. Changing the gearing seams to be an important factor here, i think. The RPMs are going to murder that poor engine...

[BLOZ UP]

I have a 3.54 from my AE sitting around. I need a 3.70 or better yet, 3.90....

[Dino]

@bloz up:....overseas shipping is quite costy i think....diffs are heavy

@az4u2c: i think you are right, gearing is an important factor to solve my problem, do you think the pathys or trucks have had the same diffs as z31? The axle-construction are completely different i would guess

@crazed: yes, i had 1000 fahrenheit for a long time. Last year, before switching to bigger injectors i had even more with the stock turbo. Curiously the turbo survived, although it has made 220.000km it is still ok.

@all: Do the USA-Spec Z31 have that wing-mount oil cooler like the euro-spec-version?

[craZed]

Dino wrote: @crazed: yes, i had 1000 fahrenheit for a long time. Last year, before switching to bigger injectors i had even more with the stock turbo. Curiously the turbo survived, although it has made 220.000km it is still ok.
1000 F or 1000 C?
1000 C = ~1800 F.
I would be extremely worried to see 1800 F from my engine,
especialy with stock pistons and valves.

Dino wrote: @all: Do the USA-Spec Z31 have that wing-mount oil cooler like the euro-spec-version?

In USA only turbo automatics have an oilcooler with is mounted in the right hand finder well.

[Az4u2c]

All i could find out was that V6 4x4 D21 Hardbody Nissan puckups had r200 difs in the front axles. I was not able to figure out what ratios they had. I suspect, being a truck, they are 4.11s or lower. Maybe somebody one here knows for sure.

Even a 3.54 would help you out a lot though, time to scroung around for an 84-86T diff.

Also, Have you considered running higher profile tires? I know it may not look all that great, and it may have adverse effects on your handling, but switching to a 225/60 instead of 225/50 should yeild another 10mph if i'm not mistaken. I would check on your tires anyway, there's no way i'd trust mine at that kind of speed (i have cheap tires).

[craZed]

Stinky built a transmission with a taller 5th gear.