Our tow rig motor finally gave out at 296k.. We were pulling the black truck to the drag strip the weekend before Houston and everything was fine, then all of a sudden the truck ran rough for 10-15 seconds and died.
Engine would crank but would not fire, sounded like it had no compression.
Rewind a bit. A few days before we left for the Shelbyville KY pull we took the 160 pump off and put the (tuned) 215 pump back on.
It was supposed to be pin-timed at 20 degrees, I found out on the trip that it was much higher (26.5 degrees) and we didn't have time to re time it.
On the way there it was blowing a LOT of oil, presumably blow-by, but some was also from the front crank seal leaking (again). Then it seemed like the timing slipped and the blow by decreased along with power coming on closer to 2000 rpm rather than 2500.
Truck has a 64/14/71 turbo with stage 3 injectors and a ported head.
Has a NV4500 RPM with 4.10 gears so most of the pulling is done at 2300-2500 RPM. Head and block are cut for fire rings.
I hope this valve job can be saved.. We'll see next week.
Notice how all the other pistons have crap in them from #6? Even number one had them!
Have to get that one straightened, does anyone have a pushrod straightener I can borrow? LOL
I am surprised how the aluminum managed to spread itself to the other pistons.. Not quite sure how that works.. Maybe someone can offer some insight..
The right valve pictured is the intake valve, notice the buildup of aluminum shavings.
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