Dissapointing year end with my Roush 427R

[Varmit]

I can only give you my experience. Mine is a Roush 427SR, it burned quite a bit of oil. I pulled the heads, and had them checked. The valve stems were worn, and could actually see a "lip" at the beginning of the worn area. I had the valves replaced with feria's (sp) that were slightly larger. The heads were cleaned, new valve seats, up put back on the engine, and all is fine, no oil consumption, no smoke when letting off the throttle. Runs really good, and I have no complaints.

Wish you the best of luck on your situation!!!

[jhv48]

And here's my update from my 2011 post.
The oil consumption got progressively worse. At 13,500 miles intake gasket let go. After replacement and new valve guides and seals, oil was blowing out the breather and dipstick tube. Piston blowby. Leak down test showed two cylinders excessive. Tore down the engine. Two pistons had small cracks in the ring lands. Lifters worn, cylinders showed no crosshatch. Looked like the engine had 100,000 miles on it. Total rebuild and valve job needed to the tune of $15,000.
After the rebuild and a good dyno tune, runs stronger than it ever did.

Would I ever recommend or buy another Roush product? Nope. This is a total street engine and was maintained meticulously. My feeling is that it should have lasted a little longer. But that's just my opinion.

[james911pro]

Originally Posted by jhv48

And here's my update from my 2011 post.
The oil consumption got progressively worse. At 13,500 miles intake gasket let go. After replacement and new valve guides and seals, oil was blowing out the breather and dipstick tube. Piston blowby. Leak down test showed two cylinders excessive. Tore down the engine. Two pistons had small cracks in the ring lands. Lifters worn, cylinders showed no crosshatch. Looked like the engine had 100,000 miles on it. Total rebuild and valve job needed to the tune of $15,000.
After the rebuild and a good dyno tune, runs stronger than it ever did.

Would I ever recommend or buy another Roush product? Nope. This is a total street engine and was maintained meticulously. My feeling is that it should have lasted a little longer. But that's just my opinion.

JHV... ouch... 15k more to redo it? A new one is about 15k. Did you get an HP increase...

[james911pro]

I was hoping that Roush would have taken care of the on the first rebuild.. isn't that what a rebuild is for? they are the "experts" on thier engines I thought they would have noticed or tried that. Thanks for the input it will be one of my questions to them when I return it.!