Dyno cost & other ???

[Mule]

I tried searching for some of this, but it's so spread out that I can't take the time at my office. I'm needing to do some testing on my 03. How much should I pay to stick the thing on a dyno? I am told that is how I need to figure a baseline temp, but I can't really see why. What I have and what I need.... It's the 03 HO, I have an AFE cold air system (Magnum Force), Edge Ez (#3 pin) w/ waste gate elbow installed on turbo, Aeroturbine and a 5" Magnaflow muffler. I can peg my boost gauge at 35# easy.... I have the Pyro in the exhaust manifild down pipe before the turbo, basically reading the front 3 cyls temp (I know, it should be on the back cyls, but that's where the exhaust shop stuck it). I'm getting ready to buy a 25' 5th wheel camper and stick my 19' boat behind it. I am concerned about the max EGTs I can hit, so I want to figure out the max #s that are safe. I plan on pulling in the mountains here in Colorado. I'm also planning on pulling a 27' enclosed trailer full of a dive shop's gear and tanks. I'm heading to Utah with it. I am also concerned about fuel pressure. I think I am running out of fuel when I get on it. I have some weird things happening every once in a while. When I start it in the afternoons to go home, it will try to stall on me when I drive about a block from my office and hit a stop sign. So here is the stupid questions. What is the max EGT temp? Does this truck has a lift pump as well as a regular fuel pump? Should I have an aftermarket fuel pump with the mods I have? Should I have a pressure gauge? Is there a port to plug a gauge into or do I have to add a fitting? Who sells them for a reasonable price on line if I need one? I plan on dropping the Edge to the #2 setting for pulling, would this still tax the fuel system? Thanks Greg

[John Rodriguez]

Locally it's 3 runs for 30.

[Fronty Owner]

There is a shop offering Dyno's for $50 in Ft. Smith AR. I dont know how many runs.

[Mule]

Thanks,
I hate to go into a setting like this without having at least some info to go on.

G

[Tom488]

What is the max EGT temp?

1250°F is about as hot as you'd ever want to run while towing.

Does this truck has a lift pump as well as a regular fuel pump?

You have an electric lift pump mounted to the back of the fuel filter canister, that pulls ("lifts") fuel from the tank. You then have a gear-driven high-pressure injection pump at the front of the engine that pressurizes the fuel rail. It's the electric lift pump that's the weak link, and the cause of any low fuel pressure problems.

Should I have an aftermarket fuel pump with the mods I have?

It's possible to pull the fuel pressure down to 0 with just an EZ, but you have to be heavy-footed about it. A pusher pump (or better, a pump that completely replaces the difficult-to-service factory lift pump) is always a good idea.

Should I have a pressure gauge?

IMO, absolutely. Although the CP3 pump is less susceptible to damage from low fuel pressure than the VP44 was, it's still a good idea to monitor fuel pressure, especially when you're running more fuel through the engine than stock. Gauges are cheap insurance against doing something dumb - as long as you pay attention to them.

Is there a port to plug a gauge into or do I have to add a fitting?

There isn't a readily-available fitting - the easiest thing to do is get a tapped banjo bolt, and replace the stock banjo on the supply line into the CP3 pump. This is very easy to get to, and will give you your fuel pressure post-filter, which then allows you to use your FP gauge to monitor your fuel filter, and know when it needs changing.

Who sells them for a reasonable price on line if I need one?

Geno's Garage (http://www.genosgarage.com) is a good place to get everything you need. They have a DiPricol FP gauge kit that will have everything you need, except the tapped banjo bolt. They list that separately.

[Smkndzl]

Mule , I would take it to your local Cummins shop and place it on the dyno and tell them what you want to learn from this. that way it can simulate a long hill climb or just freeway driving with a high load, you will get much more accurate EGT numbers then you would get with a Dynojet style dyno.

[Mule]

That's more what I needed, I didn't realize they could simulate settings.
thanks,
Greg

PS, I'm looking at the FP gauges right now. I will have one here by Friday.....
thanks again

[Mule]

Ok, got another question.

Would this electric pump work?
no load 140 pgh, max 18psi
6psi @ 120gph.

It's a Summit Racing pump G3136 (old # G3134), I have it sitting in my shop at home. It was for a TBI injection system I was going to put on another vehicle. I think it's made by Carter for them.

FP gauge & install kit is on it's way.

[451Mopar]

Try this dyno, It's close to where you live.
5330 Tennyson Street, Denver, CO. 303-455-2443
http://www.dynopro.com/

I think they charge $75.
Sometimes car/truck clubs will rent the dyno for a day (I think $500) and get 10+ cars/trucks to run so the cost is about $50.

I'm new to the Cummins Turbo Diesel, so I don't know much about the lift pump/fuel pressure situation.

[Mule]

Very cool, thanks! I have passed by the area hundreds of times and had no idea. They are only a few blocks out of my way when I go into work.
Baseline test is three runs for $75.00

I'm making an appointment today, I can't wait to see what this thing does. Although, I think I need the pusher pump first......
That will be for another day at the dino.......

G

[Smkndzl]

You wont get the results you want from the Dyno at Dynopro. you need a dyno that you can load down and simulate the results you want.

[Mule]

I was not aware that they could not do that. Is there a certain type of dyno I need to be looking for?

I want to know that it's goint to do with the weight back there........

Thanks.
Greg