Primary Fuel Pressure Regulator Shims - Source?

[DMC1890]

My primary pressure is a bit low (69 psi) since replacing the Fuel Distributor. It was well over 70 with the previous FD, although I don't recall the exact reading. So I want to shim the regulator to get a bit higher pressure. I've seen the shims listed at DeLorean Go, and I don't have any particular problem with ordering from them, but I'm surprised that I can't find a US source for these. Any ideas?

Thanks in advance.

[mluder]

My primary pressure is a bit low (69 psi) since replacing the Fuel Distributor. It was well over 70 with the previous FD, although I don't recall the exact reading. So I want to shim the regulator to get a bit higher pressure. I've seen the shims listed at DeLorean Go, and I don't have any particular problem with ordering from them, but I'm surprised that I can't find a US source for these. Any ideas?

Thanks in advance.
You could try contacting Toby Peterson at DeLorean Service Northwest / DeLorean Parts Northwest.
(360) 358-3886

Cheers
Steve

[dmcnc]

You could transfer shims from your old FD if that's still around? Otherwise I'm sure Rob Grady, Toby, MW or any of the vendors likely have shims they could sell you for cheap. The primary pressure regulator is available on eBay, but not worth spending money to replace the entire thing for a few 50 cent shims.

[Bitsyncmaster]

If you have a large junk bin you may find a washer that will fit. It takes quite a lot of thickness to bump it up 4 or 5 PSI.

[DMC1890]

Thanks guys. I have a call in to DMCH on this. Dave, your past experience on this seemed the least encouraging that this would do any good. Others have reported some improvement when raising the pressure from 69 to 75 psi, so I think it's worth a try. I'll have a look through my miscellaneous hardware collection.

[DeLoreanGo Arran]

Maybe I'm biased but I don't see the problem with buying from us :) - I have sent 2 shim kits out to the US just today for example.

It's an odd size (5.5mm) so we had to have them laser cut to our spec and from a specific grade of metal. I don't think you'd find them in a random collection of washers.

[Ron]

My primary pressure is a bit low (69 psi) since replacing the Fuel Distributor.
...
Any ideas?
I agree that it probably wouldn't help...but out of spec is out of spec. :)

You could try using a thinner copper seal on the carrier (circled in Red Below):
59519

If that makes it too high, you could then remove a shim (or replace one with a thinner one you might have).

If you are using one of the thick carrier seals, you could trim it down, making make sure it is cut flat, square, and leaves plenty of material...
(A little goes a long way here.)

[DMC-81]

Maybe I'm biased but I don't see the problem with buying from us :) - I have sent 2 shim kits out to the US just today for example.

It's an odd size (5.5mm) so we had to have them laser cut to our spec and from a specific grade of metal. I don't think you'd find them in a random collection of washers.

I have the shim kit from DeloreanGo, and I'm pleased with it. I haven't had to use it yet, but as above, I read about them having the parts custom made and decided to add the kit to my spare parts bin.

[DMC1890]

I'll see what DMCH has to say - they might want to look at the FD since they were the ones who rebuilt it.

I've got absolutely nothing against you guys in the UK! I grew up not far from you - my father was stationed at Woodbridge 1956-1958.

[Ron]

Discussion on Uneven Injector Output moved to HERE (http://dmctalk.org/showthread.php?17266-Uneven-Injector-Output-***Split-from-PPR-Shim-Source-***).

[DMC1890]

I just spoke with Steve at DMCH. He assures me that 69psi is just fine for primary fuel pressure. He's given me some other suggestions of things to look at for my rough idle problems.

[mark w]

ive had to shim mine up, quite alot, to get my pressures over 70 psi from 61.

makes me think that the spring in there is getting tired from being compressed for 40 years.

anyone have a source for the springs- without buying the whole PPR from Bosch for over $110 ?

[David T]

Could also be that the gauge that you used is not accurate. Not uncommon for them to be off a few lbs at least. Especially if they got dropped.

[mark w]

Could also be that the gauge that you used is not accurate. Not uncommon for them to be off a few lbs at least. Especially if they got dropped.


I thought of that too.
i have another delorean here, and it gives me good values on that car.
i think i have another gauge I can try, it just doesnt have the valve.