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Repowering A Superdog


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Ok we all love the E-9 but it seems that getting parts for them costs an arm and a leg. Lets say you are running a v8 and the engine blows, what would be an acceptable E9 replacement? A cat in the dog house doesn't seem very Mack to me. Cummins? What about an E7? And how may of you would spring for an MP10 to replace a bad E9 when it is released (assuming you could do a repower with one)? Or is the whole E9 parts chrisis overblown?

-Thad

What America needs is less bull and more Bulldog!

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Ok we all love the E-9 but it seems that getting parts for them costs an arm and a leg. Lets say you are running a v8 and the engine blows, what would be an acceptable E9 replacement? A cat in the dog house doesn't seem very Mack to me. Cummins? What about an E7? And how may of you would spring for an MP10 to replace a bad E9 when it is released (assuming you could do a repower with one)? Or is the whole E9 parts chrisis overblown?

Hey Thad, I think it's worth rebiulding the E-9. I guess what dosn't cost an arm and a leg now a days. But if you were going to replace it I'd put an E-7 in and go for dependable engine and get some fuel mileage, Tim

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If your interested I have a E-7 I would sell out of a 85 I bought for the rears. Runs good.

The E7 didnt come out til 89 or 90, either someone swapped that motor into that 85, or else its an E6

"If You Can't Shift It Smoothly, You Shouldn't Be Driving It"

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  • 2 weeks later...

I had an 86 RD800 that came with an E9-440. It had been replaced by an E7-400 when i bought it. Big difference in power but I always liked the E6 and E7's for the reliability. I had an 85 RD800 with a cummins as well. I love a Mack motor for simplicity and reliability but I loved that Cummins for the engine brake and the fact that it was a Big Cam 3 and they seem to last forever or until you finally turn a bearing...whichever comes first :D

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