jaydee1445
Newbie
Would like some input on this swap.
116k mile 6.5 TD in a 96 GMC 2500 Suburban vin S was hamfisted doing lifter change by PO’s shade tree and was never finished. I bought it as a basket. Somehow shadetree changed lifters without pulling drivers exhaust manifold and crossover pipe because the bolts and flange is rusted to the point of replacement. Not surprisingly motor is down on compression and #1 is a head hole. This block will be set aside for inspection tear-down and possible rebuild sometime later.
Plan is to swap a running low mile HMMWV GEP Navistar casting Naturally Aspirated 6.5 motor into her using the OE 6.5 turbo parts. The turbo and NA block are same casting and the NA and side mount heads are both 90 degree manifold bolts so turbo should bolt right up.
I think it would be wise to pull the heads, check prechambers, cyl for wear, stud the block, install new roller lifters, and a high compression head gasket. Obviously, the pan needs to be swapped so a high flow pump is a no brainier. I’m resisting pulling the bearing caps to plastic-gauge clearances but not checking while the pan is off is just stupid, right??
Am I getting carried away on a strong low mileage engine? The lazy side of me says just swap the pan and oil pump.....
Thought about reworking the 24 v DB2 pump for turbo application but it would be a $400 rebuild and $300 core to convert it to 12V and still need a Quickshift 4 to control OE 4L80e. The more I think about it, using the DS2 pump isn't worth the effort and cost to get trans and cruise control to play nice. PMD relocation seems to solve most the DS4 pump issues, correct??
Other than swapping the DS4 pump and 96 TD timing cover for the CKP sensor is there anything else to change on the NA motor to run the DS4 pump? AFAICT the NA and TD injectors are the same other than possibilly a slightlly higher popoff pressure on the turbo.
Is a gear-to-gear timing set worth the investment or should I do just do a new chain set?
What have I not thought about?
This is a family hauler not a Zombie Apocalypse Road Warrior; that will be a 6BT in one of the other Burbs we have collected.
116k mile 6.5 TD in a 96 GMC 2500 Suburban vin S was hamfisted doing lifter change by PO’s shade tree and was never finished. I bought it as a basket. Somehow shadetree changed lifters without pulling drivers exhaust manifold and crossover pipe because the bolts and flange is rusted to the point of replacement. Not surprisingly motor is down on compression and #1 is a head hole. This block will be set aside for inspection tear-down and possible rebuild sometime later.
Plan is to swap a running low mile HMMWV GEP Navistar casting Naturally Aspirated 6.5 motor into her using the OE 6.5 turbo parts. The turbo and NA block are same casting and the NA and side mount heads are both 90 degree manifold bolts so turbo should bolt right up.
I think it would be wise to pull the heads, check prechambers, cyl for wear, stud the block, install new roller lifters, and a high compression head gasket. Obviously, the pan needs to be swapped so a high flow pump is a no brainier. I’m resisting pulling the bearing caps to plastic-gauge clearances but not checking while the pan is off is just stupid, right??
Am I getting carried away on a strong low mileage engine? The lazy side of me says just swap the pan and oil pump.....
Thought about reworking the 24 v DB2 pump for turbo application but it would be a $400 rebuild and $300 core to convert it to 12V and still need a Quickshift 4 to control OE 4L80e. The more I think about it, using the DS2 pump isn't worth the effort and cost to get trans and cruise control to play nice. PMD relocation seems to solve most the DS4 pump issues, correct??
Other than swapping the DS4 pump and 96 TD timing cover for the CKP sensor is there anything else to change on the NA motor to run the DS4 pump? AFAICT the NA and TD injectors are the same other than possibilly a slightlly higher popoff pressure on the turbo.
Is a gear-to-gear timing set worth the investment or should I do just do a new chain set?
What have I not thought about?
This is a family hauler not a Zombie Apocalypse Road Warrior; that will be a 6BT in one of the other Burbs we have collected.