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Old 04-23-2014, 11:39 AM   #1
kovert240sx
 
Join Date: Feb 2004
Location: utah
Posts: 32
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kovert240sx is an unknown quantity at this point
So..I put OEM SR20DE 9.5:1 pistons in my SR20DET...

So to be honest..It wasn't intentional, but interesting that it kinda worked anyway.

A couple years back i had a machine shop do the assembly on a rebuild and they said they could also order the factory pistons.

Without thinking what that meant, I went ahead with it. ( I intended to put factory DET pistons in it ).


After the engine was complete I had it dyno tuned on a mustang dyno with the following:

Stock rods
Stock injectors
Stock fuel system aside from Z32 filter / walbro pump, also stock fuel pressure.
Stock intake manifold.
Nistune
HKS GT2510
256/256 cams
Tubular bottom mount manifold w/ full exhaust
91 octane gas @ 17psi

Results:

366whp / 310ft lbs tq

I was maxing out the injectors so the low boost = low tq.

I ended up having my drain plug back itself out on the dyno that day, lost all oil and killed the turbo.

fast forward 2 years: at some point during a injector upgrade/turbo swap, or maybe even the same day I killed the turbo..my ( DET ) piston rings are toast.

Pulled the head yesterday and discovered my mistake from the build.

Even though it wasn't intentional, i figured I'd share anyway as I've never heard of it being attempted.
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