Man! I'll have to email then then. Unless it is cus I got um off Powerstroke Nation... I posted them there cus I couldn't find um on my computer. Maybe try becoming a member at PSN. You might be able to see um then. If not pm me your email.

Anyone else not able to see um?

 

What are you planning for exhaust? I hope your not planning to use the factory mani's....The passenger side is fine, but the drivers side is really restrictive for a setup like this...

20psi should be NO problem with that charger, but you also have to fuel that 20psi.... What the plan for IP?

Are you going to build a plenum and W/A intercool it?

Its going to be interesting for sure... I was hoping the other setup would have worked better, but I think we all knew the M90 was going to be too small to begin with, but now we know for sure...

 

Are you running your own headers that you made or are you running Stans headers? They are kinda pricey if you are. Lol. And like Racin said, you will definitely need some fuel with that thing.

Also as far as the M90 goes, it had decent boost down low but nothing up top. That setup might have been decent with a turbo blowing into it. It just was not capable of more than 8psi and that is all he said he wanted anyway. So i don't know why he gave up on it. With that m90, it could have spooled a bigger turbo and made decent power. That is what it would have been better for in a setup...

 

Heel no. No factory manifolds for me. My plan has always been headers and they are already on there. They are Stan's headers. I figured I'd just make it easy when I bought them. I needed to get the bronco out of my garage at the time to make room for my brothers mustang and I kind of threw stuff together more than I normally would have. That's why I need to take it in when I'm done and have a shop run my exhaust. It will be dual 2.5, already have the magnaflow muffler.

With 20 psi I definitely would need something to keep it cool. But that will be stage 2 of the project. Stage 1 is to find a happy medium of power and fuel efficiency by keeping it at 15 psi max (maybe even less) and also keeping it simple in design. At low boost and slower rpms I don't think my heat will be too extreme unlike what I'm sure that little m90 was running. That's why I believe that a supercharger is perfect for these idi's because they are limited by boost anyway and they get their power early, one of the reasons I decided not to lower compression, because I want a low end monster and will be somewhat limited on boost. Although I have always been a fan of the supercharger concept, I understand the argument of turbo efficiency, but only see that efficiency advantage of the turbo in the higher rpm and psi range. I plan to test that idea first. After that it's off to the races! I have to test my intercooler idea and it should do well at whatever boost levels and will be even more helpful at 20 psi. As far as injection pump, I was planning on talking to you about that racin. How are you guys handling your pump, Is it going to be marketed on a limited bases? I thought about it and I think I'll do something consistent pump wise and do an injector test from there. I would mess around with pumps but I know the DB4 has plenty of fuel for me after going over it with NMB2 a while back.

I'll bet he saw minimal power gain and maybe some belt slip with that m90 and maybe that's why he didn't keep it. I theorize that this magnacharger will be most efficient at about 8 psi non intercooled, simply because of the heat issue and you know that poor little m90 must have been spinning 18,000 rpm and running more than 130 degrees to reach 8 psi. That's just a guess, I think the m90 has to spin about 10,000 just to reach 500 cfm but I can't remember the specs.

 

With headers and a full exhaust I bet that idi will be loud as heck! A na engine is loud enough and after you put the SC on, you'll have more air rushing out. It is gonna sound sick!

I can't wait til you get that thing on and I look forward to see how the build progresses. I think even at low boost it'll run decently and have a decent amount of torque. I have seen some Chevy 6.5 diesels running a supercharger around 10-20psi and they do really well especially when they up the boost. IDIs really seem to respond well to superchargers with their higher compression and fuel system design. It helps burn all the excess fuel that they normally make.

As far as the Db4 goes, I think the 130cc pump would be perfect for your setup. A 160cc IP would be overkill for your setup unless you were trying to build a racer. Then you could overfuel it and hit it with nitrous like Banks does on their supercharger only setup. But otherwise the other one is ideal for what you will have and will burn cleanly.

With the M90, you are right. Temps are killer to power.

 

It will be loud. So you're saying I shouldn't run straight exhaust then. Lol, It will be loud enough I'm sure.

You're right about the 160cc being overkill considering I won't being going past 20 psi. 130cc would be fine. What are they doing as far as pop pressure on the injectors? I want to make sure it will work with the different injector designs.

 

You can run it either way, but without mufflers you will hear it from a mile away. If you run mufflers, I would run a straight through muffler.

As far as the injectors go, Racin is running the standard Dps stage 1s and NMB2 is running a similar design the have matched flow and iirc a 2100 or 2300 pop pressure. Don't remember which off the top of my head. You will have to ask NMB2 to be sure... They do work well with his design though.

 

Maybe one of them will chime in. I will run the stage 1 injectors first because of cost. Getting some info from NMB2 on the workings of the pump will be helpful. I want to make sure I'm doing fair tests on the different injectors.

 

You will be able to test all the injectors both with a Db2 and a Db4 as well. I am curious how the respond to each IP.

 

Me to. And it will be fun to mess around with timing also. I need to do some searches on the db4. I haven't done much research on it. Do you know if the fuel is adjusted the same way and what the recommendations are for that? I figured the 130cc would be the adjusted max fuel flow but I'm not sure.

 

I'm not positive what all adjustments there are on Db4 pumps but I do know they come calibrated at a certain fuel level, so I'm not sure there is a fuel adjustment but there might be. Also there have been some mods done to there pumps to allow then to actually flow more fuel, such as extra fill ports. So those pumps are quite a bit more capable than a stock Db4. They also have a stronger cam pin in them as well cus the one that is stock in them breaks easily.

 

That's good to know. Maybe I'll send NMB2 a pm and see what he says.

 

The DB4's are coming in 120cc and 150cc+ versions, though there is a fair amount of wiggle room on the bigger pump... At that fueling its basically a maxxed out unbridled pump, and can see upwards of 180cc's with tuning, and of course unlimited RPM potential if you choose. Basically that is the pump somebody wants if they dont have any issue scattering their bottom end all over the pavement... The 120cc pump is more for somebody that wants to optimize their setup and have a reliable pump with limits built in, its still capable of over 300whp/600wtq...

As far as what makes the pumps what they are, they are brand new heads/rotors, they have double the fill ports of a stock DB4 on the chamber filling side, and a larger cam pin. The 120cc and 150cc pumps are Identical, which is why they cost exactly the same, the difference is in the calibration. Everything else is exactly the same as a standard DB2... Infact, my DB4 is just my old Turbo Cal with the DB4 stuff installed.

 

Thanks for the info. So the pump can still be adjusted, just carefully right? How much is the pump?

 

How would you compare the reliability of the 150cc pump to the 120cc pump? Also would there be a defueling issue with the 120cc like there was with the 150cc before you adjusted the governor?