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M
Moral dilemma
Nobody wants to say it, but maybe you should consider a Duramax? I don't care for IFS either, but it's not like you're going to be wheeling the thing ;)- MaxPF
- Post #42
- Forum: 6.9L IH & 7.3L IDI Diesels
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M
Rebuild the IDI, or swap in a Cummins
Ahh, you're right. They only have Powerstroke gaskets :( Well, looks like the best option would be to have the rod offset technique. It's relatively easy to do and gets the job done.- MaxPF
- Post #51
- Forum: 6.9L IH & 7.3L IDI Diesels
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M
Rebuild the IDI, or swap in a Cummins
Pistons aren't the only way to drop the CR. On a 6.2/6.5, every .010" of deck clearance nets you about 1 point of CR reduction. The 6.9/7.3 should be similar. So, to go from 21.5:1 to 18:1, you need to either drop the piston crown .035", or raise the head by that amount. Obviously you could mill...- MaxPF
- Post #46
- Forum: 6.9L IH & 7.3L IDI Diesels
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M
Rebuild the IDI, or swap in a Cummins
Hey, if a guy can get around 500HP out of a GM 6.5L, you ought to be able to get a reliable 300+ out of a built 6.9 or 7.3. You're going to need to drop the compression (18:1 is what the 6.5 guys use) and use an intercooler, but it shouldn't be an issue. The Peninsular marine 6.5's run 340...- MaxPF
- Post #44
- Forum: 6.9L IH & 7.3L IDI Diesels
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M
Rebuild the IDI, or swap in a Cummins
I say stick with the IDI. Cummins are so played, and an IDI can make plenty of reliable power if you do your homework :D- MaxPF
- Post #38
- Forum: 6.9L IH & 7.3L IDI Diesels
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M
Rebuild the IDI, or swap in a Cummins
Yeah, they wanted the 6.5 to be OBD-II compliant, so they went to the DS4 and a PCM to control it. For .mil use the PCM and associated electronics would need to be meet certain criteria, and it was probably considered easier and cheaper to keep the DB2 and TH400...- MaxPF
- Post #34
- Forum: 6.9L IH & 7.3L IDI Diesels
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M
Rebuild the IDI, or swap in a Cummins
All .mil 6.5's still use good ole DB2's. Unfortunately, running JP8 shortens their life, but they are still way better than the DS4's...- MaxPF
- Post #32
- Forum: 6.9L IH & 7.3L IDI Diesels
