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Chinese 6.5 block

Turbine Doc said:
Even Bill Heath ran my FTB when he set the record to beat at Bonneville https://www.motortrend.com/reviews/1006dp-500hp-65l-diesel-race-engine
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And frum the website, a copy annda paste wuz nessary. 😹

Fuel Injection System

The limit on power imposed by the 6.5L's comparatively fuel-stingy Stanadyne DS-4 injection pump is a very real one and Heath knew the only hope was to squeeze every last bit of power from what fuel it does provide. The Heath Diesel IDI engine used the off-the-shelf HO Bosch fuel injectors. These were combined with factory high-pressure lines and a new Stanadyne 5521 injection pump. The only modification to the injection pump was the addition of Tim Outland's Feed the Beast fuel inlet fittings. Heath runs an AirDog fuel lift pump adjusted to 7 psi of fuel pressure. The higher engine speed substantially changed the amount of fuel necessary, which began to stretch the limits of the regular heavy-duty lift pump.
 
Out here we used to donit to the db2 & db4 pumps- but also had those horrible square box fuel filters that would often leak. So changing that to a spin on canister that had 1/2” we reduced to 3/8 was common. And it’s just a regular barb fitting for the db pumps so it was easy. Many of the guys did it not for any gains, just so the fuel hose was all the same when we would replace the filter unit to the spin on.
 
Will L. said:
I have an optimizer I bought new and the original plan was run it for 100,000 miles, then rip it all apart and make all the changes. I wish I had just made all the changes when it was brand new. That’s why that has become my new standard, I have seen too many brand new 6.5, including P 400, that have failures in under 100,000 miles. I am of the opinion now that all brand new 6.5s MUST BE disassembled and make the changes required.
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Partially due to your suggestions @Will L. that's where I am now with a completely torn down brand new Optimizer. It's @Twisted Steel Performance shop now for lots of fun ($$$) stuff. I'm 70 now and the truck is 30, with these improvements it should outlive me and still be going strong for my grandson who helping me rebuild the slushbox now whilst we wait for the motor. BTW transmission is from Monster Transmission (not recommended) with less than 3000 miles on it and was slipping in first and reverse when first installed, lots of clutch material in the pan and he said it looks like converter material in the fluid.
 
93detroit said:
Still sitting on it while I finish changes to my pulling tractor. I hope to send the block for machine work (make sure everything is square and in line) next month, and I need to get the pistons first.
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I woonder if line boring would make bearings all one size, most likely not as thats mostly on journal diameters.
 
MrMarty51 said:
I woonder if line boring would make bearings all one size, most likely not as thats mostly on journal diameters.
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Curious if a block has to be line bored if they make main bearings that are oversize on the OD rather than the ID when a crank is turned.
 
I've been going over things lately looking more and more into a summer project of attempting a cylinder hone and re-ring job on my 93 to try and save the engine. the more and more I look into it I am seeing the cost factor for what it would accomplish and thinking it's not worth it. if the parts weren't so high in cost I would do it. looks like I would be spending almost 1k in parts to trim the ring ridge, hone the cylinders and replace all the rings, along with all the gaskets timing chain and oil pump. Just to slow down blow-by and be able to trust it for longer trips.

Remembered this thread and thought I would look into usable blocks.
 
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