Black dawg
Registered User
a good bb code injector looks very similar spray pattern wise as that mm. There looks to be much more volume from that mm though. I have not seen a mm in person though so dont take my word for it.
moose power?
- Thread starter blown84
- Start date
a good bb code injector looks very similar spray pattern wise as that mm. There looks to be much more volume from that mm though. I have not seen a mm in person though so dont take my word for it.
blown84
Full Access Member
oldbull8, i planned to get the blower off of ebay for about $200. then $100 for shippin. unless you can get me one cheaper??
dyoung14
Is getting worn out
Im not trying to be an ass or anything but i was seeing really high boost with my 093 and my mods are pretty simple, I have a maxed turbo pump, BB injectors set to pop at 2300 psi, crossover pipe wrapped, homebuilt downpipe, then 3 inch exhuast no muffler after that but only to the rear tire, ram-air intake, timing is really advanced it has a real slow pretty idle kinda lopy real rattly and when i get on it, it rattles big time, all that is how i make the boost i make, i need to crank the truck and let it run its been awhile, i just need about a can of ether tho
Just a reminder guys, to please watch the personal comments and name calling. Everybody is entitled to their opinion, but like mom told you, if you can't say nothin' nice, don't say anything at all.
cool, thanks for the info. would be cool if someone could make a vid comparing the misters to the bbs and the stage ones from dps. just so we can see the difference for ourselves.
dyoung14
Is getting worn out
Crude way of putting things but watch yourself ****, now imagine that out of and injector except much less "fuel" NO automization they suck all the do is ****
. i had a set of DPS injectors, they smoked like a train with a stock tuned pump got zero fuel milage and idled horribly missed badly on cold starts, pulled them out and threw them on the ground! they are still there to this day! put my injectors that i had the pop pressure set on in my engine never had a problem since ran like a champ!
88 Ford
Full Access Member
I'm sure that the DPS injectors aren't as good as Moose Misters but I musta got lucky cus mine actually work decently. Lol
blown84
Full Access Member
david, how much boost are you pushin, what mods do you have, and what are your EGTs like?
just a thought: does anyone make a full ceramic, or maybe just a ceramic topped piston for the 6.9??
just a thought: does anyone make a full ceramic, or maybe just a ceramic topped piston for the 6.9??
dyoung14
Is getting worn out
When boost was at 20psi and i was smoke free i had 1050-1100 EGT, when i made 28psi i didnt have the EGT gauge hooked up, but i was clouding the road in smoke
I'm not sure I understand. The video link I posted IS a comparison of a good stock BB to a Moose Mister. We've done demonstrations at rallies of what the DPS injectors look like, and they do pass more fuel, but it is NOT atomized in any way. The "spray" pattern is not streight down, and "walks" around randomly, whizzing in different directions.
http://www.dps-performance.com/ is the only place i have seen ceramic coating, but i am sure you can find others that do it.
I see. The video said the moose misters were based off bb injectors but it didn't say what the stock injector was being demonstrated (unless I read it wrong)
I know dps injectors are junk but a video showing just how bad they are in comparison to bbs and misters would help keep people away from them. Those are the 3 "performance" injectors, so showing how each sprays in a video would be handy.
I know dps injectors are junk but a video showing just how bad they are in comparison to bbs and misters would help keep people away from them. Those are the 3 "performance" injectors, so showing how each sprays in a video would be handy.
seawalkersee
It needs a turbo...
Errr...okay. Lots of opinions floating around in here. If blowers were no good for diesels, then what have companies started to produce them to fill the power void where the turbo falls short?
Your EGTs do not work the same on a gasser as they do on a diesel. If you cram too much air into a gasser, you burn stuff. On a diesel, the more air you cram in, the cooler the EGTs are (this is leaving out the ACT from boost/IC debate). I think what the debate was about 1100* is a good way to see that when you are out of fuel, it will not heat up anymore. Not sure if that is 100% what he has done, but I think it is one way to make it work.
Now for the blower setup. I am going to run a M90 off of a supercoupe. The output of the IDI is only 20cfms more than the 3.8. With a stock seutp, they made 15ish psi. I think with mine, I will be able to see 10 if not more. If you have never driven a positive displacement blower vehicle, you should before saying they will not work. Instant boost is king. And when you are doing things like I am, you want to operate as low in the RPM band as possible.
SWS
Your EGTs do not work the same on a gasser as they do on a diesel. If you cram too much air into a gasser, you burn stuff. On a diesel, the more air you cram in, the cooler the EGTs are (this is leaving out the ACT from boost/IC debate). I think what the debate was about 1100* is a good way to see that when you are out of fuel, it will not heat up anymore. Not sure if that is 100% what he has done, but I think it is one way to make it work.
Now for the blower setup. I am going to run a M90 off of a supercoupe. The output of the IDI is only 20cfms more than the 3.8. With a stock seutp, they made 15ish psi. I think with mine, I will be able to see 10 if not more. If you have never driven a positive displacement blower vehicle, you should before saying they will not work. Instant boost is king. And when you are doing things like I am, you want to operate as low in the RPM band as possible.
SWS
429idi
Full Access Member
You are comparing an eaton m-90 to a detroit 8-71. The eaton superchargers are made to make a lot over atmospheric pressure boost, the detroit blowers were not. The eaton superchargers can turn 12,000 rpm continually, whereas the detroits have to be modified to spin with a gasser (not sure of the rpm). There is a reason all the manufacturers use eaton blowers instead of 8-71 blowers. Sure 8-71's look cool, but I just don't think that is the best choice. Why do you think Detroit went to using turbochargers? Also, the m90's are easier to run an intercooler, and if you bolt an 8-71 to go straight into your intake, you can't cool the air.
If psi and cfm are all you care about, than just about anything will work, but air temperature is just as important as those two. The number on your boost gauge doesn't mean everything.
If your 6.9 at 70 degrees n/a (14.7psia) 3300rpm will flow 25lbs/min, than with 15psi boost (29.7psia) non i/c at 300degrees the same engine will flow 50lbs/min right? Wrong. It will only flow 35lbs/min. If you get that temp down to 130 degrees ( typical intercooled temperature) you'll be at 46 lbs/min. All these would be at about the same cfm, just more actual air.
I'm not saying nobody should put on an 8-71 blower it would be cool, and it would work okay, but I don't think it would be any better than the turbos that are already widely available. Now, if you absolutely need the boost right off the line, that's a different story, but the turbo truck will be better off right when it spools.
I still think the best think for about 20psi the best thing would be an m112 blower pushing into the ats or banks turbo, then off to the intercooler. Then, the supercharger would only have to make 8psi boost, which would keep it efficient, with a low power draw, and have really good top end. You would probably have to up size your turbine though.
Just got back on this thread. That was years ago when I used to get the blowers off of the 8V71 at Wooster. I do know where an engine is setting in a barn, my friend just passed away, I still have a V730 Allison there. You better get that one off ebay, they are getting scarce.
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