Has anyone ever tried replacing the VP-44 injection pump with the P-7100?

 

Yup, been done many times on 24v trucks looking for ultimate power.......it has been discussed at length on a few very large threads on here if you do a search.....it is a very expensive procedure but worth it, IMO, if ultimate power is what you are after.

 

I have seen one in Muncie IN. Its pretty neat. It smokes like a train. People at Daves Diesel said that it is not a good street truck though. It is hard to tune and the smoke was not manageable. You might want to read a lot more about it.

 

Is this something I should consider???

 

Diesel Dynamics in Vegas did one of their Dyno trucks with the P7100. It was for sale a while back. Most of the guys do this for power, but I think you could keep it toned down for reliability.

 

here's the best thread so far...

https://www.dieseltruckresource.com/...ad.php?t=38179

It documents the process chronologically with plenty of info pro and con.

 

After reading that I'm out....

 

G-Note,
If you get a pump from Blue Chip or ADT, I don't think you'll ever have to worry about it again.
Mike

 

I ran into a guy locally here that had done that to his own truck, an everyday driver and it didn't seem to have any issues just watchin him in and out of the parking lot. He wasn't much on computers so I couldn't get him talked into this site. He talked like he was pretty good at this stuff and said once he got all the parts together it wasn't much more than a long weekend to install. I know this isn't much help but it is a do-able project and according to him well worth while.

 

I originally posted this question due to the unreliability of the VP-44. When my truck had about 85,000 miles the pump went out. Now at 140,000 miles I am getting a dead pedal from time to time. I am also getting a fuel pump timing code on the scanner. I think this is ridiculous that I purchased a truck with a Cummins Diesel for the reliability and I am already looking to having the change that pump again. Yet my 1997 that has the P-7100 with 244,000, has been running with the original pump.

 

That sure is a good statement. But if you consider all problems with the cummins it is still a far cry away from replacing 8 ford injectors that cost 250 a pop or the valve cover gaskets that leak from ford. The duramax's have had injector problems and they go for about 300 a piece so any way you dice it I think it is going to hurt the wallet a little.

 

A bit off topic but........

Hate to stick up for the bad guys but the Duramax has a 200,000 mile warranty on the injectors. They knew they had a problem and from what I can gather stand behind it.
A bit more info.

...of the new Duramax LLY are the new heads, which put the injectors *outside* the valve covers, rather than underneath them as on the previous LB7. This is important because if an injector leaks, it will spill diesel fuel down the outside of the engine, rather than cause the crankcase to fill-up and overflow from the inside.

Unfortunately, that's exactly what's been happening. GM recently sent out notices to owners of 2001-2002 Duramax diesels that they *may* experience injector failure caused by high fuel return rates or cracked injector bodies, and that accordingly, GM will extend the warranty on *covered* failures (not all) to 7 yrs/200,000 miles. While that's a small positive step, my $0.02 is that GM has not gone far enough. Since they KNOW they have a problem with the Bosch injectors, the appropriate and ethical course of action would be to issue a recall for all affected vehicles, and replace the bad injectors with the updated ones the owners should have expected in the first place. FYI, these injectors operate under very high pressures, up to 30,000 psi, making them completely different animals than cheap injectors in gasoline engines which operate at a lowly 50 psi, and cost less than $100 each. The bosch diesel injectors cost upwards of $500 each, 8-12 hours labor to replace them, and some have been replaced 8 at a time under the GM warranty. You do the math...that's quite a bit of exposure for an owner to accept. Diesels are fun, but you could pay to play if you hold on to one beyond the warranty period. The bosch injectors are on national backorder at this time. Dealers cannot give a time frame if you are unfortunate enough to suffer this malady, except first come-first serve.