Help Identifying HPFP Internals

Hey everyone, I'm looking to get some help on identifying the HPFP internals that I currently have in the car, as the previous owner bought the car with them installed and the previous previous owner said he never had Autotech, only CorkSport. Since I know these are not the latest CorkSport internals, nor doe they appear to be Autotech, I'm wondering if these are some older revisions or are some other brand entirely. I can safely say they are not OEM, but I'm still looking to know what exact brand they are!

 

What do you mean you can say they're not the OEM ones? That's the OEM top hat and no markings on the body. Those are OEM internals

https://cobbtuning.atlassian.net/wiki/spaces/PRS/pages/640450675/371100-Autotech+Fuel+Pump+Internals

 

Unless you're saying that CorkSport's comparison is wrong, OEM internals are a single diameter thickness across the entire piston, whereas mine are not. Additionally, there's no way I put 45,012 miles on OEM internals with full bolt ons and BNR S3 on E30.


Do you have anything to support that they're OEM internals aside from the top hat?

 

Many years ago there were other brands available some that reused stock parts but I don't remember anything beyond the fact that they existed

 

Haha, yeah I’m starting to think these were a very limited run or something. The parts clearly have been working, so I guess that’s what’s important, but the mystery is interesting.

 

Take a couple of logs and as long as fuel pressure is staying consistent they will be fine. Don't log much other than fuel pressure and rpm since a lot of the time the pressure will only drop for a cell or two so you want the best resolution possible

 

Ah I see it now, some odd non mainstream limited ones re using the OEM restrainer it appears. I really only knew of KMD, autotech and CS though. Wait CPE has upgraded full Assembly as well not sure what their internals look like.

 

Yeah I heard about the full assembly one as well, but can't imagine that's what I have. What's annoying is that they were clearly listed on the mod list as Autotech and I think it's pretty clear they're not Autotech at all. Super strange...

 

Yeah definitely not autotech, similar retainer on the CPE, but usually had a sticker on the outside.

There's also this replacement assembly
https://partsavatar.ca/2007-2013-ma...iJ2Lau-Q5xHDw2XwXpP7dosTutP15zO8aAoyJEALw_wcB

 

Cpe has a giant sticker. Hard to miss. There were brands that were replacement internals not whole pump assemblies

Haha noob catch up

 

<3 you too

 

Kmd comes to mind. Then the hpfp upgrade guy who sold a bunch of trash.

 

Oh no.

At the end of the day, if they've been working and have held up pressures just fine, should I be concerned?

 

Didn't ptp sell a set for a while too

Though knowing him it was probably just autotechs with a giant mark-up

 

If it's holding the desired pressure you want then I personally wouldn't be concerned, it's a solid piece of metal, it shouldn't just stop working.

 

YES! PEE TEE PEE. Then like 4 others before he made tork. Was a total bag of trash.

Autotechs have been out a long time. After many miles, mine did seize. I'm running Corksport and zero issues.

But no name internals I would throw in the trash can like the 5 stock air boxes I kept for 10 years

That's how the ptp hpfp upgrade crap was. Worked then zoom zoom boom

 

kinda interested in the technical reasons behind why it would just /stop working/

 

Basically not to proper tolerances, if I recall. Pressure dropped and engines became vented. It was a big deal. Forced the company to close. He reopened shortly after as a new brand. But same junk. I would not trust em.

 

if tolerances were scuffed you'd expect it to fail fast though wouldn't you?

 

No, all depends on the part and where the tolerance went off each one could be individually off in different portions and this fail differently some could more off than others, all depends on driver as well are the idling low load or being driven high rpm, poor oil changes? All are a factor.