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Clifford Project - '88 Cummins CrewCab

Yep. Waiting on the tapped banjo bolt from Geno's. It's been out for delivery since 9:30 yesterday morning. :rolleyes: No wonder the USPS is going down.
 
Are you going to mount them next to the 3 in one gauge you already have? Or are you going to put them in a pod? I saw a thread awhile ago where someone was making 3 gauge pillar pods for our trucks but I can't remember where I saw it
 
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These are the 7 color so they match the 3-in-1 gauge I already had. The colors are slightly off from the 3-in-1, but not enough to bother me. Ignore the blurriness, it's part my camera and the little protective covers were still on in this pic. I probably wouldn't get a pod if there was one. I've really been wanting to do a fiberglass project for a long time, and I think this dash may be it.

So I got the new sender in the passenger tank and the switching valve both replaced. Remember the in-tank pump is still in the driver tank and there is now a draw straw in the pass tank. On the pump I'm getting 7-9psi at idle, around 7 cruising and it will suck it down to ~3psi on a hard pull. On the draw straw it's barely 5psi at idle, ~3 cruising, and will suck down to 0. Stock is about 5psi, but 18psi is supposed to be ideal for the VE injection pump. So like I suspected it's running out of fuel with my mods.

So I picked up the 2nd gen 12v piston lift pump for the P-pump engines yesterday. The VE lift pumps are a diaphragm design. The new pump being piston is more reliable along with added pressure. This pump puts out 30+psi though. So I need to order a regulator, some fittings, and hose to put it all together. This will let me set it where I want it and it should hold that pressure or close to it no matter the driving condition. I looked into the low pressure piston lift pump from the industrial apps but the pressures seem to be hit and miss and not much better than the stock 5psi.
 
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I really dislike chrome on most things and the grill bothered me so I gave the truck a quick facelift too. I need to get new bezels so I just spray painted the crappy old one real quick to see what it looks like. Much better IMO.
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I did the 2nd Gen high pressure pump and regulator a couple weeks ago. The pressures are a little different between tanks, but I'm in the process of running the driver tank down so I can swap out the pump for a draw straw. Picked up the pump, spacer, and gaskets from Cummins. Regulator came from Summit, and all the hoses and fittings from Vulcan Performance.

I have it regulated to 15psi which it stays pretty close to cruising. It still holds 10+psi when getting on it. MUCH better than before. I didn't notice any power difference, but it holds strong through the RPM band which it used to fall off on the top end.

I finished running 3/8" feed and 5/16" return lines on the truck. From the pump>regulator>filter housing is all 1/2". Used the bracket that came with the regulator, just bent it to how I needed it. Mounted it on one of the intake horn bolts. Pics are before I had the return hooked up.

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Have you done much towing with this truck yet? I'm interested in how the egts are without an intercooler.
 
The only towing I've done so far was only 3-3500lbs. It did fine with that. EGT's are really only an issue when I'm getting on it and holding it at the top of a gear. I need to turn the starwheel back down a little. Since I did the pump, it actually holds peak boost now, as where before it would hit peak boost and start falling off.

I did have to replace and relocate the fuel pressure sensor. I had it screwed directly into the banjo bolt coming off the filter housing. The pressure spikes from the pump is I'm sure what killed it. I ended up putting a needle valve in the banjo bolt>18" grease gun hose>sensor. There wasn't really a good way to make a mount for the sensor until this jumped out at me. It fits pretty well and has no vibration there so I stuck a zip tie around it just to keep it snug. It will work until I clean up the engine bay.

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Very nice! That thing looks right at home on there
 
Trick headache rack Travis! :waytogo:

I would like to build one for my truck one day...might have to steal your design. :D
 
do you mind snapping some pics of your exhaust?.. its really tight on mine with the divorced tcase
 
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