Cummins/82 C10

[ellis93]

No thoughts on the plate then?


Got the boost and fuel psi hooked up and realized I forgot my 1/8 pipe tap at the shop so that's as far as I got tonight. Trans temp will be going in a re deep pan I have so that is waiting too. Everything is on high powered standby till tomorrow.

Cranked and ran the truck tonight to run the air out of the fuel lines. In the process I found the pressure at 21 or 22lbs. That's not where I left it when I shimmed the overflow valve,I may have a problem

[PToombs]

Not really. It seems like the locating plate is a little redundant if you are going to be adjusting it much. You can throw it in the middle and go from there. As for the plate vs a regular one, I don't see any difference if it's machined from 1 piece or built of 2. Whatever is cheaper usually works for me!

[oldestof11]

Ellis, grind your own. From what I have seen people who know these pump recommend, a #10 and #100 with AFC tuning is ideal.

[ellis93]

Jon I have seen that plate profile pic on diesel bomber,I've thought about it as well,and came to the realization I want to keep the stock one in the glovebox. That plate I'm looking at is cheap enough that I could cut on it without regret. Well.....if a 6 or 5 isn't enough
I need to take baby steps until I know something about these things.

[oldestof11]

Gotcha. That is why I have a stock AFC cone sitting in my tool box in my garage. In case I mess something up.

[ellis93]

Yep I did the same when I was fooling with the dodge. As I added fuel the m2 pin got to be too much,stocker went back in

[ellis93]

Finished all gauges install,newer deeper pan installed with the temp sender. The cruise mod is working,it will turn on and accelerate/set but no coast/deceleration. I had to ground the wire for the decel operation to even get it to hold throttle. Weird but it works.
And I fooled with the fuel pressure too. Like bigblue did in his tread I used a bic click pen spring and got this

I immediately pulled that spring and trimmed it by three coils,tightened the end coil again and got this.

I couldn't in good conscience leave it at 70. There was zero fuel return to the tank,plus with the line I have running to the filter feeling rock hard it was worrisome.
Fixin to drive it home so.....we'll see.

[cmann250]

at "Unleaded fuel only" on the dash

[ellis93]

:lol: at "Unleaded fuel only" on the dash

yep

Well no dice on the pressure thing,I have 10lbs of fuel pressure now. Freakin stupid spring

[DMan1198]

So does that mean another bic pen spring will "go missing"?

[PToombs]

Fix it right!

By the way, after seeing the profile chart again, I have a 100 plate. Lots of fuel on midrange and up top, but I slid the plate back some and AFC tuned it so it's better, no 1400* runs up the on ramp at work.

[ellis93]

Yes it does

Turns out the diameter of the spring matters. That's something that wasn't mentioned in the post I read,nor did I take the valve completely out to see the entirety of its inner workings.
I thought it was just ball,spring,shim then bolt. Wrong answer camel head.....it's ball,spring SEAT,spring,then shim and bolt.

There is a nub on the seat that the spring rest on,that nub keeps it centered as well.
I just removed and reinstalled the overflow valve and found that seat cocked in the hole holding off the spring,and dumping pressure.

I'm seeing 60lbs right now so time will tell if I've done anything here.

As a side note....if anyone does this,your supply pump will make hella racket. The tapping is anoying.

[ellis93]

Well the clicking and the variety of fuel pressure has me looking at a pump and valve. I found one pump that's pretty cheap and more than a few valves.
I also have no idea why the pump prices are so crazy. The range of prices is crazy. You can get cheap to down right crazy expensive.
I'm looking at this one
Look at this on eBay:

http://pages.ebay.com/link/?nav=item.vi ... 1451787203

Here's the valves I'm curious about
Look at this on eBay:

http://pages.ebay.com/link/?nav=item.vi ... 1071892531

And
Look at this on eBay:

http://pages.ebay.com/link/?nav=item.vi ... 1295599675

Which one would you use?

[oldestof11]

I'd get a OFV from a quality seller like Tork Technology.

http://www.torkteknology.com/products/T ... FV010.html

I am always suspect of Ebay quality, especially when the price is really good.

[ellis93]

Jon after doing some reading on that valve you mentioned there,I bought it. From the pics and info they posted,it seems like a worth while part.
I did however buy the cheapo lift pump I figured what the hey,in the words of the immortal dark wing duck "let's get dangerous "

Oh and btw,this factory valve seems like it working sence I got the spring seat settled but my pressures fluctuation has me worried. At idle I see 50 or 55lbs,running down the road I see anywhere fro 25 to 40. When it the pressure is right the pump is clicking,when the psi is low no clicking. I think something is up in the pump after 325k+ miles