Long Awaited First Start! (link to video)

[88 Ford]

For right now, I'm running a stock IP turned all the way up. Gonna run it that way for break in, then when I've got the coin, upgrade to something bigger. MUCH bigger. Yes, that's correct about the braided lines. It's a pan-e-vac kit you'd normally find on a gasser with headers.

There are some new options now since you had posted before for fuel mods. As always there is the Super Moose which will put out 150cc out of a DB2 and now Dps has adapted a DB4 to the idi also. NMB2 is running the 150cc pump and another guys in the process of finishing up his build has a 180cc DB4. No matter what you do, you are going to need the extra fuel to spool that turbo. It will be awesome to see what that thing can put down power wise. Is it gonna be a DD at all or just a toy?

 

[IHDiesel445]

Whether or not it's a daily driver depends on two things. How hard it is to start, and how long it stays together... Thanks for the heads up on the DB4. I've been looking into that. Good to know that someone has actually done it now.

 

[88 Ford]

No problem man. If it is hard to start, you can always use the ether injection kits that are sold and then just disable the GPs. Those kits are good for everyday use and if you wanted to go that way it is a good option to make it start easily for everyday use.

 

[Diesel JD]

The other option is you could use 12V glow plugs such as the ones from a 1978 GM 5.7 diesel 'slow glow" system with a manual toggle. Also some of the dual coils are safe for 25+ seconds of glow time. It doesn't get *THAT* cold in Va. Beach so maybe you won't have too much trouble th it, glow plugs, block heater, or an ether injection kit. Personally I think the DB4 is going to be a really awesome pump for any IDI that move enough air to burn the fuel, but it might be nice to see a few thousand trouble free miles with it on the NMB2 and the other 2 recent HO builds. One stopgap measure would be to buy a DPS turbo cal or Moose Pump for break in. The stock pump at 50cc isn't going to do your hard work any justice. It won't hurt it, I guess it will just have a HUGE excess of air in the combustion reaction, since you don't have to worry about running lean in a diesel. Who knows how it will run. I agree either the timing is way to far advanced or you still have air in the lines. I wouldn't want to run very advanced timing on any IDI...your engine can take it (bottom end, head gaskets etc,) but it won't help with anything you want to do :ease of starting, tuning and testing, giving yourself a baseline for further fuel mods) Having said that, congrats on getting her running. Good luck!

 

[88 Ford]

So any idea when it will be driveable?

 

[typ4]

It sounds like a perkins

Thats just cruel Brad even for you

 

[MidnightBlade]

I'm dissapointed, I didn't hear the turbo whistling like a fiend like I was expecting.

Very nice work, I've been following your build for a while now and itis just an awesome feeling to hear that beast run!

 

[hesutton]

Not sure how I missed this post, but I'm glad to see you've got it up and running Eric! Very impressive build. Like the others have said, she sounds very advanced. I'd research the DPS DB4 very carefully before you purchase. Reliablilty seems to be an issue at this point. The one built for NMB2 didn't last very long. Ken's trying again. I'd like to see what the Super Moose pump and Super Moose Injectors can do, but no one has stepped up and purchased those yet.

Seems you got the last set of Hypermax IDI C-rings. Lucky! Once you get the fuel sorted out, see how she boosts then. If it is very laggy, I've got a 125 housing for the S400 turbo's I'm likely not going to use.

Heath

 

[88 Ford]

Not sure how I missed this post, but I'm glad to see you've got it up and running Eric! Very impressive build. Like the others have said, she sounds very advanced. I'd research the DPS DB4 very carefully before you purchase. Reliablilty seems to be an issue at this point. The one built for NMB2 didn't last very long. Ken's trying again. I'd like to see what the Super Moose pump and Super Moose Injectors can do, but no one has stepped up and purchased those yet.

Seems you got the last set of Hypermax IDI C-rings. Lucky! Once you get the fuel sorted out, see how she boosts then. If it is very laggy, I've got a 125 housing for the S400 turbo's I'm likely not going to use.

Heath

I just thought I'd point out that the DB4 is not open for sale to the general public due to it still being in the process of testing. Ken wants to have it thoroughly test it before it is available to everyone. Right now there are only three pumps out that are being tested and they are only on engines that have been built to handle that much fuel. As for the failure, the reason it failed it because an air intrusion snapped the advanced piston pin. It was kind of a freak thing that could happen to any pump.

 

[rhkcommander]

As far as ive seen the Db4/2 hybrids have been around for a good while now before Ken started trying... Even though they are unheard of really. Those guys at land and sea tech had an idi with one supposedly

 

[88 Ford]

Iirc they aren't hybrid pumps. They are DB4s that have been adapted fot use on our engines. I'm pretty sure all the internals are from the DB4 and the only thing used from a Db2 was something to adapt it. I might be wrong though. But either way, it can deliver a lot of fuel. If I can get my hands on a 150cc pump eventually, I'd be pretty happy.

 

[hesutton]

Ken is Ken....Air huh? Not wanting to get into the whole DPS thing here, so I'll shut up on the subject, fair enough?

Calvin has reported reliability being the biggest issue found on modified DB4's he's had experience with. I've never used or seen one, and not sure why, but that seems to be a recurring problem.

For me, it's just a curiousity. I have no desire to put a 150cc IP on my IDI. They are for hauling and getting me to and from work daily.......... not hot rodding. For that..... I've got a little 6 cylinder diesel to play with.

Heath

 

[Black dawg]

Air could cause that failure. And I dont think that this could happen to any pump, as 4 pumping elements is a lot more load on the cam ring, advance piston, and pin.

 

[88 Ford]

I am by no means trying to debate products. I have both Moose and Dps and they both have done well for me but I do long for more fuel down the road when I do more to my engine. As for the reliability on an idi, who knows til more testing is done. It will definitely be interesting to see how it does.

And black dawg, you are probably right. I was just kinda making a generalization that stuff can happen to any pump. Thanks for the info. Those pump pumps are really intiguing.

 

[typ4]

John Deere used db4 pumps on many engines, Ive seen some timing ring and lock pin failures, not many but usually on a unit that was poorly maintained, when the fuel filter gets plugged the pump can pull in air and my friend has seen the pin hammered almost gone.
remember the pop pressure is 2100 ish, injection pressure can be as high as 12k on some applications, like a direct injection Deere.

Lets see how Kens repair goes and give it some time before condemning.
And the aerated fuel is likely the problem, remember , custom race /performance items seldom work out of the gate the first time ,unless you have unlimited R&D budget.