Piston lift pump finally

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Piston lift pump finally

Postby cougar » Sat May 25, 2013 3:04 pm

After sitting on the shelf for a year, finally got round to installing the low pressure piston lift pump. What a pain, took about 3 hours to do. Guess that's what happens when you get fat and old. Had to take the hood off, throttle cable bracket, and moved the dip stick tube and wiring harness out of the way. I was about ready to remove the master cylinder. All this just to cut away the insulation on the valve lifter cover. Scraping away the old gasket was a lot of fun too. Bought the Delphi pump, we'll see how long it hold up. If I have to replace it and/or do the 92 I'll use a high volume with a low pressure spring. There are some out there now.
RIP 91.5 W250 5 speed. The great experiment.
92 W250 HD 47RH with Compushift. Upgraded H1C to 62/60/16, Scheid Lightning VE, 60# valve springs, DAP 7X.010 injectors, 4" DE exhaust, home made cooler tubes.
01 2500 "the work truck".
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Re: Piston lift pump finally

Postby cmann250 » Sat May 25, 2013 3:47 pm

I was thoroughly impressed when I took the test run around the block the first time with my piston pump. I had a brand new stock LP previously to boot.
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Re: Piston lift pump finally

Postby cougar » Sat May 25, 2013 6:12 pm

cmann250 wrote:I was thoroughly impressed when I took the test run around the block the first time with my piston pump. I had a brand new stock LP previously to boot.

I've only noticed a slightly better throttle response, nothing note worthy.
RIP 91.5 W250 5 speed. The great experiment.
92 W250 HD 47RH with Compushift. Upgraded H1C to 62/60/16, Scheid Lightning VE, 60# valve springs, DAP 7X.010 injectors, 4" DE exhaust, home made cooler tubes.
01 2500 "the work truck".
cougar
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Re: Piston lift pump finally

Postby cmann250 » Sat May 25, 2013 6:24 pm

Maybe the non-IC's injectors make it more dramatic. It pulled hard until it ran out of gear with my 727.
Caleb, Certified Shade Tree Mechanic Extraordinaire :mrgreen:
The 1stgen.org black sheep

"Whatever!" - Coach Jerry Smith
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Re: Piston lift pump finally

Postby RCCUMMINS89 » Sat May 25, 2013 7:03 pm

cougar wrote:
cmann250 wrote:I was thoroughly impressed when I took the test run around the block the first time with my piston pump. I had a brand new stock LP previously to boot.

I've only noticed a slightly better throttle response, nothing note worthy.



Same here....... I actually noticed WAY better throttle response.

Cougar...... your lift pump doesn't push much (if any) over 10 psi, not that you need more.....but I noticed that any time I increased psi I noticed throttle response.....up to about 12ish psi.


Most my customers (99%) notice increased throttle response.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Piston lift pump finally

Postby Deathrod » Sat May 25, 2013 8:07 pm

cougar wrote:After sitting on the shelf for a year, finally got round to installing the low pressure piston lift pump. What a pain, took about 3 hours to do. Guess that's what happens when you get fat and old. Had to take the hood off, throttle cable bracket, and moved the dip stick tube and wiring harness out of the way. I was about ready to remove the master cylinder. All this just to cut away the insulation on the valve lifter cover. Scraping away the old gasket was a lot of fun too. Bought the Delphi pump, we'll see how long it hold up. If I have to replace it and/or do the 92 I'll use a high volume with a low pressure spring. There are some out there now.

Yet another reason for the dodge delete.... Mine took probably 20 minutes :lol:
1930 Model A, 91 non i/c, he351ve over ht3b, bagged all around, mostly built 47rh, 72 lpm sticks, 600hp/1400 ft lbs (cummins math), just needs traction
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Re: Piston lift pump finally

Postby RCCUMMINS89 » Sat May 25, 2013 8:16 pm

I have a 3 inch body lift and no gap guards...... I can literally take my inj. pump off without opening the hood (ok minus taking the inj. lines off the injectors.).

It still took me probably an hour to get the damn thing on. It's a pain in the butt to get the bolts started.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Piston lift pump finally

Postby ellis93 » Sun May 26, 2013 6:04 am

Wow......y'all are too funny :lol: that little job doesn't even register on the difficulty scale with me. I work on to many foreign jobs to think this job is hard :? Try starting the bolts in a Honda vtec solenoid flange...that job will drive you insane
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: Piston lift pump finally

Postby cougar » Sun May 26, 2013 8:43 am

I work on little airplanes, I know what pain and suffering can be. This was easy compared to some "simple" aircraft work I've done, like changing a support clamp.
RIP 91.5 W250 5 speed. The great experiment.
92 W250 HD 47RH with Compushift. Upgraded H1C to 62/60/16, Scheid Lightning VE, 60# valve springs, DAP 7X.010 injectors, 4" DE exhaust, home made cooler tubes.
01 2500 "the work truck".
cougar
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Re: Piston lift pump finally

Postby cougar » Sun May 26, 2013 12:10 pm

Well, poo. Sucking in air somewhere. Wouldn't start and had to bleed the filter and injectors to get him going. There is a short section of hose to the pump I should replace. And of course, being a holiday weekend everyone is closed.
RIP 91.5 W250 5 speed. The great experiment.
92 W250 HD 47RH with Compushift. Upgraded H1C to 62/60/16, Scheid Lightning VE, 60# valve springs, DAP 7X.010 injectors, 4" DE exhaust, home made cooler tubes.
01 2500 "the work truck".
cougar
14mm rotor
 
Posts: 967
Joined: Sat Apr 18, 2009 3:31 pm
Location: The Valley of no concern, AK
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