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Old 02-03-2009, 02:00 AM   #1
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Thumbs up 3.8L Supercharger help.

I have a 3.8L 95 T-bird supercharger that i want to install but...the bolt pattern is different from the supercharger to the top block. I need a spacer that has both patterns. Supercharger & top block. I believe its called the upper intake plenum. Do they make that or do i have to go back to shop class and make it myself!? I dont have enough $ to buy a new kit($3,200) but i got all the parts for that and ive heard its a pretty popular route. My brother in-law is going to make his turbo and he would like some tips as well. BTW I own a 04 3.8L and he owns a 02 3.8L. My e-mail is MistaG84@yahoo.com Thanks for whatever info. i get
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Old 02-03-2009, 08:39 AM   #2
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Re: 3.8L Supercharger help.

are you trying to adapt the blower to your 3.8L mustang engine? If you are there are better ways to go about it as in using the 03/04 cobra M112 supercharger instead of the M90 supercoupe supercharger. The actual installation of the supercoupe supercharger on that vehicle is very different from just bolting it to the upper intake, it ran an inter cooler and just sat above the upper intake, did'nt actually bolt to it.

There are kits that some make and sell to adapt an M112 supercharger onto your vehicle (but without an inter cooler) as the superchargers are not that much (400ish) and not 100% sure on the adapters and all of that. But.. chances are your stock hood will not clear it.

Let me know more along the lines of what you are trying to do and I may can get you in contact with some people that have the parts you need.
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Old 02-03-2009, 01:31 PM   #3
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Re: 3.8L Supercharger help.

i need a spacer with bolt 2 patterns. one for the supercharger and the other one to replace the upper intake plenum. i reread it and i mixed it up. i dont need the upper intake plenum i need to replace it once i mount the supercharger. i believe it is an m90 supercharger but ill get back to u on that. on thursday i will take pictures of the setup i have. supercharger, intercooler, hoses ect. i have all the parts for the supercharger except for that replacement mount that i need and the hood. im thinking 00 cobra r hood that has that big space for it. if not ill have somebody build me one out of fiberglass here in o-town. thanks for your interest in helping me get my car done!!
i am a new member and have no friends yet. my bro is making his 02 v6 turbo and he sold me all the parts for the supercharger so i dont wanna be left behind!!
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Old 02-03-2009, 07:00 PM   #4
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Re: 3.8L Supercharger help.

Well your 2004 is a spilt port engine (better than the 94-98 V6 motor), however the supercharger you speak of is from a 1995 Sinlge Port motor. The conversion of this supercharger to fit your new style spilt port heads is ridiculously difficult if not impossible to my knowledge, but I may be wrong. The people that have to do this swap normally have to switch to single port cylinder heads which is a huge drawback on power as I think the 98's only had about 160-165HP, whereas the 99-2004 V6 has 193 stock. In my opinion I'd sell it and either go the M112 route, or go centrifical (Procharger, Vortec etc). Your brother is gonna have a hell of a time bending pipes to fit, but if he wants he should check out TMAturbo.com for some real nice setups at decent pricing. Either way (supercharge or Turbo) your looking at a few grand my friend.
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Old 02-04-2009, 11:55 AM   #5
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Re: 3.8L Supercharger help.

ok runv. the supercharger was given to me by my bro w/all parts. its for a 3.8 t-bird. the m112 is 4 a v8. how can i make that adapt to it? chances r i would still need the same spacer w/2 bolt patterns(engine-supercharger) and the main question is will i need a different intercooler, piping, hoses, computer, ect.? i already have all of that ?is will i be able to use any of that. i have no problem selling/buying supercharger(m90/m112) i just want a layout of all the parts i need to make this possible for a 3.8Lv6. i dont intend on installing any time soon. i am going to do everything at once, in following order, suspension, tires, rear axle stuff-lsd ect., engine, and body last. i want a complete car w/300hp/300trq est. v6. that is my goal. im far from it but i just dont know much bout car or people. thanks for ur info. and interest on my project.
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Old 02-04-2009, 12:08 PM   #6
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Re: 3.8L Supercharger help.

As far as my knowledge goes noone has made a M-90 intake for the 99-04 3.8L. Supersix motor sports has the intake to adapt a M112 supercharger. I still think you'd see better gains with a centrifical set up and you won't have to worry about buying a new hood/having one made for you and you won't have to worry about buying a $900 intake to adapt the M112 to your car. You don't have to run an intercooler, but you will want to cuz you get more power and you keep the temperature lower and if you go the M112 supercharger route you will have to fab one up as most likely the M-90 won't work, but it could you'll just have to do more research. The computer you have will be reused but it has to be tuned by a professional (No getting around this step as it is the most important). hope this helps. Good luck with the car.
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Old 02-04-2009, 02:14 PM   #7
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Re: 3.8L Supercharger help.

you really really really really need an intercooler setup of some sort to run a roots blower, you wont have that.
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Old 02-04-2009, 04:06 PM   #8
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Re: 3.8L Supercharger help.

Spec N Run. You guys know ur ish!! Centrifical is same concept as turbo/supercharger? I dont know much bout blowers, know bout turbos but i don't want to go through that hell. This is way more different than my 3000GT!! So i wanted to go w/the supercharger route since its more in the family. Can you guys enlighten me on blowers. And what r u guys working with or plan on working on this type of car?
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Old 02-04-2009, 04:28 PM   #9
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Re: 3.8L Supercharger help.

the roots blower is like the M90 or M112 from the 03/04 cobra. It uses a screw system to force air into the intake (either mounted directly ontop of the upper intake or somewhere else).

A centrifugal supercharger is like vortech or procharger. It uses a propeller to force air into the intake tract and generally uses an air to air intercooler.

Roots blowers are also called twin screw blower (but they work differently, just look the same~) whipple or kenne bell is an example of a twin screw (instead of one screw inside the blower making boost its two for example)

Centrifugal are better for higher end hp roots and twin screw blowers make GREAT low end grunt.

There is a guy that makes the entire kit to adapt a M112 03/04 cobra Eaton supercharge onto a 3.8L dual port v6 but the stock hood wont fit it after its done and its not intercooler, when you compress air it gets hot, very hot. Thats the only issue I see with that setup.
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Old 02-04-2009, 04:37 PM   #10
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Re: 3.8L Supercharger help.

A centrifical blower/supercharger is a type of supercharger that runs off the Belt with its own bracket and pully, but does not need any special type of intake manifold. It spools up immediately and you get the power right off the line so there is no drag time like with turbos. A roots type/twin screw supercharger which is what you have (M-90) or M112 sits on top of the intake manifold and has a pulley mounted on it which extends towards the engine belt. This type of supercharger requires a special intake manifold. The power gains with both centrifical and roots type superchargers are similar and each can be modified to make more Boost/power. A turbo requires special headers, but it does not run off the belts system. Turbo's normally require more Tuning and Fabricating (pipes for intercooler, intercooler itself, etc. The power gains for Turbos are normally greater than that of superchargers and they normally make more power at lower boost levels which is a good thing. If I were you I'd look at either the TMA turbo kit or a Procharger kit. Both will get you atleast 300RWHP/torque, but the turbo will do it at a lower boost level. The fuel system will have to be upgraded most of the time in either case mainly you'll need a bigger fuel pump, injectors, and of course a precious Tune. Some of these parts if not all are included in some kits, but you will def want to make sure you have an intercooler and a solid tune by a quality shop done before you drive it.
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Old 02-04-2009, 08:24 PM   #11
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Re: 3.8L Supercharger help.

hey, we should start pointing people >^ that way to the search button, would save alot of bandwidth. i know since i have been on here this has been discussed about 1 billion and 4 times, spectors fingers are going to fall off one day
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Old 02-05-2009, 02:20 PM   #12
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Re: 3.8L Supercharger help.

Thanks guys!! U guys r da ish!! I gonna put pics of all the stuff i have 2nite. I know the turbo route is a mess but very rewarding. I'm gonna try n go m112. I do wanna keep it supercharger since bro wants turbo. I gotta upgrade the intercooler so ill try to get a racing or something along those lines for the high amount of heat. I just wanna have all the parts before i even take out 1 bolt. The supercharger is the biggest gain in power that ill have so ill get that first. Then all engine stuff, suspension stuff n body last. This is my daily driver right now so im not doing anything to it for the time being.
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Old 02-07-2009, 09:08 AM   #13
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Re: 3.8L Supercharger help.

If your going to do an m90 on a 99-04 (for whatever reason) you're going to basically have to convert it to single port [via super coupe parts] and basically follow the belt routing, s/c routing, etc of the supercoupe motor.

Other options are:

M112 kit via ssms adapter or matt/nathan's adapters
procharger or vortech from there respective companies
and
Turbo from Andy @ tma turbo
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Old 02-07-2009, 03:04 PM   #14
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Re: 3.8L Supercharger help.

Thanks for the info. I'm gonna try to get an m112 but i would still need the upper intake. If i can buy that already machined then i have everything else for it! Again Thanks for ur interest in my project!
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Old 02-07-2009, 03:32 PM   #15
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Re: 3.8L Supercharger help.

Quote:
Originally Posted by MistaG84 View Post
Thanks for the info. I'm gonna try to get an m112 but i would still need the upper intake. If i can buy that already machined then i have everything else for it! Again Thanks for ur interest in my project!

SuperSixmotorsports sells the upper, then its a matter of belt routing and what to do about the hood.
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Old 02-07-2009, 07:51 PM   #16
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Re: 3.8L Supercharger help.

Thanks for the info!! Now i just gotta sell my m90 n buy n m112+upper intake! Again thamks for the info! You guys kick ***!!
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Old 02-08-2009, 01:25 PM   #17
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Re: 3.8L Supercharger help.

how much you selling it for?
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