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Kryp2nitE
Dodge Dakota
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9/28/2002
21:36:27
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 Subject: Eaton Blower
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Message:
hey i know i was hell bent on getting a V8
but i can get a hella deal on an eaton S/C
how much are kits to put this together because i can just buy the unit itself...
how much psi can a stock engine take?
what should i look into upgrading b4 a blower?
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POWER HUNGRY
Dodge Dakota
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9/29/2002
00:09:43
|  RE: Eaton Blower
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There isn't a manifold to bolt it to a magnum and I don't know if you can mount it off to the side like the whipple. I think you could make it work like that but you would have to have the brackets and tubes custom made. You could use the TB hat for other forced induction units for yours. For the price you'd have to ask a shop.$800?
As for how much the stock engine can take. For the stock engine I would stay around 6 psi. That is the pressure I see for that type of supercharger. The stock parts that limit the boost are:
1)stock intake maniflod belly pan
2)stock head gaskets
3)stock c.r. is a little high for anymore boost without retarding timing and running 100+ octane.
Positive diplacement blowers like lower compression like 8:1. So swapping your pistons to forged 8-8.5 and get high pressure head gaskets/o-ringing will help. After that 1.6 RR, a dual profile cam like 200/208 @ 0.50,24# injectors, 50/52MM TB, ignition and headers and cat-back. With these mods and 93 octane should allow you to run 12psi and be around 300hp/375 ft.
The boost also depend on the model of supercharger.
Do you know the model # you are looking at?
If it the M-90 or M-112:
The 6 psi setting should bring you up to V8 power on a pretty much stock motor. It'll probably cut .8 tenths and give you 8 MPH depending on you type of truck(4x4,RC,auto?).
Good Luck and keep us informed with your progress.
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Kryp2nitE
Dodge Dakota
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9/29/2002
21:42:20
| RE: Eaton Blower
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Message:
ive got a 2x4 RC auto
$800 ouch but i guess its worth it
how much do u think it is to fix
weak links 1 and 2?
if i do the blower now and i start on mods how can i turn up the boost later?
thanx for the help
im gonna go try and find a shop this week
any suggestions?
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Kryp2nitE
Dodge Dakota
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9/29/2002
21:44:08
| RE: Eaton Blower
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double posting is bad but oh well
its a roots style right...
when does the full boost kick in?
am i gonna have traction problems?
do i need an intercooler?
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jDoug
Dodge Dakota
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9/29/2002
22:03:27
| RE: Eaton Blower
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yes, its a roots type
at low rpm's
YES!
no
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Bernd
*GenIII*
9/30/2002
01:23:20
| RE: Eaton Blower
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You can safely run the factory 9.1:1 compression ratio with 6-10# boost. Anything higher, well...you still can run the 9.0:1 but get better pistons.
If anyone puts 8.0:1 pistons in a cam'd, blown 3.9/5.2/5.9L, you'd better be running A LOT of boost to compensate for no bottom end TQ. A few have tried...they all learned the hard way. Check the overlap before installing the cam. Too much overlap and you'll need to bump up the compression to compensate for the bleed-off from the cam (yes...even on S/C'd or Turbo'd engines).
Roots style blowers (and even the KB blowers) run VERY hot. We watched a '98 R/T run from a 13.2 (cool blower) to a 13.9 (after 4 runs) with a Kenne Bell S/C.
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph
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POWER HUNGRY
Dodge Dakota
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9/30/2002
20:33:26
| RE: Eaton Blower
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Message:
kryp2nite,
It is a roots type blower but have highly twisted lobes that increase efficiency over the older types. Full boost is said to be by 2000rpms. Different pullies will give you different boost levels and usually cost around $200. You won't need an intercooler but would be a good idea when you start getting the boost into the mid-teens. Whipple makes an intercooler but I don't know how you could make it work for you. The first two mods might cost $200. I would look into getting a modified manifold the has the problem fixed and get the added power with it. The C.R. for the pistons I pulled from a magazine I have on general roots type blowers. I said 8.5 because I heard it was the lowest(safest) level that is still streetable for running a lot of boost. It really depends on the level you are going for.
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Kryp2nitE
Dodge Dakota
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10/01/2002
20:20:52
| RE: Eaton Blower
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Message:
so which model would be best?
sorry for so many ?'s
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POWER HUNGRY
Dodge Dakota
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10/01/2002
22:25:22
| RE: Eaton Blower
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The models differ by how much air they move per revolution. I have read on www.superchargersonline.com about the kenne bell (similar unit) and that the 1.5l unit can support 550hp. The m-112 is 1.84l so it could make around the same horses. The real difference is, the larger units make cooler boost at higher boost levels and take more horse to turn'em. The M-62 is a 1 liter unit and would work fine if you don't go crazy. The eaton web site www.automotive.eaton.com says it is designed for 2.5L to 4.0L engines depending on the desired power out-put. If you check out these web site I think it will help with your decision. I think the m-62 would be good enough for 275-300hp on a street truck.
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Grivooga
Dodge Dakota
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8/08/2004
12:11:05
| RE: Eaton Blower
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I'm picking up a blower off a 3.8 Ford SC. Nice unit. I want to try and fab it to my my 94 3.9 dakota (.020 over, KB pistons). The physical mounting and routing of hardware doesn't look terribly difficult, hood clearance may be an issue for the pipe off the top of supercharger unit down to the intercooler and I'm somewhat concerned about adapting the sensors on the throttle body. But I'm confident that I can overcome that. What I'm worried about is fuel. Specifically whether there will be enough of it with the stock pump/regulator. Since this is a returnless setup and the regulator is in the tank, the typical piggybacked fuel pressure booster that I'm familiar with won't work. I can see that there are some people on here that have some fairly impressive exotic boost setups for this engine. How have you approached fuel management?
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