edwinsmith

HIYALL! I thought you might like to see what happens when the EGT's get a bit to high. The housing also has numerous cracks that go completely through although only one is visible from the outside. Strangely the turbine doesn't vibrate when I spin it with compressed air. Though I don't dare give it a real test on my truck. I plan to use parts from my H1C and hopefully get a complete WH1C out of the deal. NO, I bought it this way off eBay for $150.

wannadiesel

That's probably the remains of the #6 piston in there. I guess that's one way to get aluminized exhaust.

edwinsmith

I kind of wondered that myself. It looked to be hard for pieces of the wheel to get that far back in the port. I wouldn't have liked to see the rest of the engine. It just bothers me to see good machinery abused. Maybe the wheel wasn't melted that much it just got beat up from the engine parts going through but the vane tips look to be somewhat bent backward. Maybe from rubbing on the new housing geometry.

Forrest Nearing

turbo looks thrusted, and I'm sure there's a good amount of radial play also...

AND it looks like it was suckin' on some aluminum from the back of the motor!

edwinsmith

The bearings are good and tight. No play at all and they spin very well. This one seems to have been cooked with hot exhaust.

Forrest Nearing

it ingested some aluminum... wonder if a piston squirter fell victim to a cheap oil filter!

Forrest

edwinsmith

My guess is it was simply gotten to hot with the exhaust since the turbo housing is so cracked. But maybe the cracks are some unrelated abuse. Pistons get melted in gassers from preignition/pinging. I think the pressure alone does the melting but I could be wrong.

Edwin

Forrest Nearing

oh there was definately some heat in there, that's for sure!! LOL!

59FORD

DURN!! I thought I had the only aluminum coated turbo.

It's number 1 piston, I can tell by the glittery look.

edwinsmith

As a matter of fact, I went and looked at the full pic and it IS in the front port so it can't be from #6 piston.

Doesn't #1 run hotter because of a restriction of the water flow?

Edwin

Alec

The #1 cylinder does not get as good air flow -- it tends to run a little rich, and a little hotter than the rest. There is a boss in the casting for the head that is used as an accessory attachment point -- that boss sticks quite a way down into the air-runner for #1. Additionally, the path of that runner is a little longer and sort of "J" shaped to get up and around and back into the #1 intake valve.

It seems that on a long pull the # 5 & 6 cylinders are the first to go -- they start to seize from being far back in the water jacket -- but for short term overfueling, the number one piston has the highest EGT's.

Bushy

Geezzzz....thanks alot,,,,now I'm scared to look at mine.....do you think 47psi at 1800*F is a concern..?? ....naaaaaa......

pb...

signature600

Anyone ever ground that boss out of the way at the #1 hole??? I think I remember seeing pictures of someone doing it...any long term negative effects on doing this?

Chris

Dieseldude4x4

Here's what happens to number 6 when you try to pull 21000 pounds up a 7 mile long 6% grade at 72 MPH with no EGT gauge.

https://www.dieseltruckresource.com/...cat/500/page/1

jleonard