injection pump parts

[damac]

I had been wondering the same because I am actually rebuilding my old vw pump. If you take pictures and keep track of some things it was pretty easy to take apart and put back together and reseal.

But when I was in there I was hoping to find something obvious as to needing repair. To my naked eye I have a pump that was working but leaking and had mainshaft wear. I just imagine that they have nice fancy manuals to mic each of the "wear" parts and then replace accordingly?

I am not doing that on mine, just replacing all seals, mainshaft bushings which I am getting reamed to fit for free, and then the accelerator bushing while I have it apart. And for my pump I can set some pressures according to the book but beyond that I haven't a clue.

I have a pump on my truck right now that seems to want to do the job, all original I believe with injectors. When I had the 3.55 gears in there it was getting 15mpg and with leaks at multiple spots both hot and cold. And an injector would knock every once in a while and I would add atf to clear it up.

I was thinking of yanking it apart to reseal because it is leaking on the pump, but then I read around here that putting new injectors into a new pump is suicide and its very confusing.

I am doing it on the vw because its so easy to get in and out and time with the car running, etc.

 

[DeepRoots]

cool 88Beast, so how many pumps have you rebuilt?

 

[88beast]

0 theres a local old head whos been building them for years ford and chevy and he has taught me a lot recently but he had one disassembled and showed me a lot i wish i had one to take apart and make a video it was like duh easy to get

 

[typ4]

I have just ran into stanadyne pump shops that charge insanely high price for a stock rebuild, and after all that they say they cannot increase the fuel. they say it breaks thee contact they have with thee pump manufacturer.

Thats ********, they dont want to do any non oem replacement type work because of warranty issues.

My pump guy tells customers if they want it turned up they are not responsible for any engine issues.
Seems fair to me.

Also we talked about the test stands, they have to spend lots of time and money to keep them calibrated because Bosch and Stanadyne actually come to shops to test the tester, if out of spec for long they can loose the franchise.

 

[Agnem]

An important thing to remember when you start talking about increasing plunger size and changing cam rings....many techniques for increasing fuel output equate directly to increased wear and shortened pump life. This is a serious issue, unless you are interested in competition and have a budget for a new pump every 10 or 20K instead of every 100K. Everyone talks about fuel delivery and more more more... but the one thing that is hard to ignore is more more more $$$$$. Wouldn't it be a bummer to do all these mods to your pump and have it work great... for a month or two? There is no accounting for how long it will last. The way we do the Moose Pump...they will last. When someone buys a Super Moose... eh... not so much. You can't have your cake and eat it too.

 

[typ4]

Hey, if theres cake there better be ice cream too.

 

[Agnem]

If you give a Moose a muffin.....

 

[DeepRoots]

nice....