rebuilt built 6.5l Hard Hot Start

[WarWagon]

Because good DB2's re-builders are hard to find and unique diesel.com only sells custom or hot rod pumps I would recommend:
conestoga diesel known for the 'Moose pumps' and a few members here use them:
http://www.conestogadiesel.com/products/gm.html

or

Kennedy Diesel as they use new heads and rotors always. Their prices are better than "new" pumps on ebay...
https://www.kennedydiesel.com/categoryresults3.cfm?Category=1&SubCategory=159&SubCategory2=100

 

[cub124]

Thanks for the suggestions!
I think I'll be going with the Omega Moose. I just have to come up with a running core, or hopefully they have something without too steep of a core charge. I should've just bought a built pump to begin with however I just cheaped out when it came to the pump. The engine has a delta hot cam ( I think the hot one is the 206), water to air intercooler, hx40 hybrid (kind of center mount), head studs, .010 head gaskets, couple inches of Moroso block filler and the 3,800 psi marine nozzle injectors.
So I think I'll be able to use most of the fuel!

 

[cub124]

Update:
After installing the omega moose pump with ~ 110cc peak flow & 80cc cranking fuel the truck still had hot start issues. That's 3 different pumps with hot start issues.
After removing the 3800 psi injectors and replacing with 2800 psi injectors the hot start issues have gone away.
In conclusion the stanadyne db2 pump is only capable of approximately 3500 psi after a good heat sync. Of course the max psi will very with the condition of the head and rotor.

 

[WarWagon]

I am using 2350 pop pressure.

 

[cub124]

I forgot to add the 2800 seems to spool the T4 17cm hx40 way better when compared to the 3800.
With the 2800 there's a bit more fuel delivered along with a slight advance in timing due to the pump making the pressure quicker. I would suggest the extra fuel helps it light quicker than the slight veneration in the timing

Also I should state the ~110cc peak flow & 80cc cranking fuel are @ 1700 psi which is the spec for the 7.3l IDI injectors.

Hope this data will help others!!