Just wanting to know if anybody has mounted the 3800sc series 2 blower (M90) to a 2.8, 3.4, 3.1, 3X00? I saw the guy the had it over the rear exhaust manifold...I thought that might be a bad idea. I also saw the grand am with it sticking out the hood...it's not a fiero. I know there was a thread but I see nothing cam about. It had some good ideas, but that's where it ended. I was just thinking about it and was wondering has anybody else done it in a fiero and what the results were?
Originally posted by goatnipples2002:Just wanting to know if anybody has mounted the 3800sc series 2 blower (M90) to a 2.8, 3.4, 3.1, 3X00? I saw the guy the had it over the rear exhaust manifold...I thought that might be a bad idea.
Care to elaborate why you think this location is bad?
i was going to put a m90 from a super coupe on my 4.9 mainly since you can mount them anywhere and dont need to be on top of the motor. and was going to put it where the a/c compressor goes. should have worked but decided to go with the mods in my sig.
------------------ COMING SOON: 4.9 complete rebuild with buds outback northstar pistons , delta cams E303 cam , full ported , polished , and flow tested heads and manifolds. rockcrawl's custom chip 86 and 87 fiero database www.geocities.com/cwandall/fiero.html
See I was thinking of mounting it where my A/C was but wasn't sure it would fit or better yet I thought it might hang too low. If it would there with a 4.9 I should take some measurements. I wanted to mount it similiar to fierosounds. A custom bracket and charge pipe would be 10 times easier to make than a supercharger manifold. http://www.fierosound.com/supercharger/supercharger.htm
[This message has been edited by goatnipples2002 (edited 12-19-2006).]
There is a company that sells supercharger kits for 2.8 S-10's that uses small roots style blowers may be something to look at for ideas. I know they had a web site that had pics with the blower mounted right on top of the intake and the throttle body moved off to the side but I can't remember the name of the company which is probably the most important part to check it out.
The company is 614 street...if I remember correctly. They make a supercharger for a lot more than what a m90 setup might cost and the m90 will flow alot more. I would love to run a m112 if I could.......more flow with less psi and more power. I also was made for TBI not MPFI. To me that is two steps backwards.
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02:05 AM
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Raydar Member
Posts: 41130 From: Carrollton GA. Out in the... country. Registered: Oct 1999
Actually, This currently what I'm doing. I'm the one that did that good looking twin throttle body setup. I have taken a standard intake, milled it flat, made a 5/8" thick adapter plate, and am mounting a M90 blower, up-side down to this plate. The blower has to be mounted as far back as possiable for thermostat housing clearance. You have to use a timing chain cover from a FWD car so the belt will sit far enough back. Now the fun part, the blower is up-side down remember, that puts the intake port to the rear and up. The will be fed with a Weber side draft carburator pointing forward, this is done with a machined aluminum adapter block. I wish I was not so computer illiterate or I would figure out how to post some pictures. I have them on CD but can't figure out how to post them. It really looks awsome. I have heard everyone else talk about how good a carb'd engine runs I thought I try one, and besides I've always wanted a blowen engine, and I don't mean one with peices hanging out the side. If anyone could help with posting the pic's I would try to email them to you. I don't get a chance to play on hear often, but I do check in from time to time to see whats going on. Yes if you can think of it, it can be done.
The only way I know how to post pics is to use www.myfiero.com and go to imagehost. ASAP...I am having a hard time imaging what you are saying. Are you using an M90 from a thunderbird?
[This message has been edited by goatnipples2002 (edited 12-21-2006).]
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10:43 PM
Dec 22nd, 2006
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
orif im not sure but the one u posted is a 3500 intake with the adaper welded on isent it
It states it's from a 3400, But actually it doesn't matter. The point is the plenum is modified to accept a supercharger. To make an adapter to fit it on say a 2.8L, 3.1L, 3.4L would not take much work. The only thing I see would be overall height. You would need a large scoop or have it stick out the top.
i believe that is a prototype and a rare find. i would love to have that, but it is an m62 so any m62 should work they are pretty small. Maybe one off a cobalt ss.
I 'm the one that built the upper intake plenum that would mount an eaton on it, but hwere i'm working now keeps me from manufacturing any sellable product untill the end of next year. there wasn't a whole lot of intrest in the proto types on here so i sold it to some F body buddys of mine. heres my old thread.
TT Slick.....From the picture I an having ah rd time understanding why you needed to use a FWD timing cover. Is that an m90 from a ford 3.8? Why did you decided to use the weber setup instead of the stock TB? The blower you posted just looks a little smaller than the one Fie Ro posted that is why I asked. It doesn't look to stick up as far as some may have suspected. Can you give pics of greater detail including the milled intake and the timing cover as well as the T-stat housing in relation to the blower. Basically anything that can give greater insight. Thanks and keep the good $hit rollin.
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11:50 PM
Dec 28th, 2006
tjm4fun Member
Posts: 3781 From: Long Island, NY USA Registered: Feb 2006
been spyin on this thread, and just now I remembered something. in the mid/late 80's, someone made some low profile sc's for the f bodies at the time for the 305's. A co-worker put one on his car, so I got to see it installed. there was not much clearance under that hood either, the unit was much thinner than the ones shown here. Unfortunately that was 20 years ago, but possibly there are still some sources for them. As I recall, it didn;t do much for htat motor on the low rpm range, I suspect due to it;s size it was a little undersized, but at higher rpm, it turned that smog block lame motor into something that had some get up and go. Blew the shyt outta that pos 5 speed in the car too. You may want to hunt around a little, I think there wer some ads for it in car craft and hotrod. maybe someone here who didn't thrwo them all out might have something that has some info....
I used to sell those low-profile blowers when I worked at Super Shops. They were made by B&M and ran around $5k for the complete kit. They were a really nice product. However, a low-profile concept won't really work for the 2.8 because of the bank angle of the block. Chevrolets are 90° so there is lots of room to spread the manifold out and drop the intake runners down into the lifter valley, The 2.8 is a 60° so it's fairly narrow and the lifters are further up in the valley, that means there is a lot less room to pack the intake passages into. The 3800 is a 90° bank angle so it has the same advantages as the SBC.
James
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11:27 AM
tjm4fun Member
Posts: 3781 From: Long Island, NY USA Registered: Feb 2006
I thought of that, but really when you look at the size of the upper plenum, it might be possible to fit it in between thevalve covers. IIRC, it was narrower than the intake, so with the correct adapter, it might be more pheasable. But I'll defer to you as it is hazy in my mind if it could be adapted, as the ones discussed here are also for the 3800, the lower profil might make it work.
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11:40 AM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
I used to sell those low-profile blowers when I worked at Super Shops. They were made by B&M and ran around $5k for the complete kit. They were a really nice product. However, a low-profile concept won't really work for the 2.8 because of the bank angle of the block. Chevrolets are 90° so there is lots of room to spread the manifold out and drop the intake runners down into the lifter valley, The 2.8 is a 60° so it's fairly narrow and the lifters are further up in the valley, that means there is a lot less room to pack the intake passages into. The 3800 is a 90° bank angle so it has the same advantages as the SBC.
James
B&M originally made a supercharger for the 60* V-6 as well in the 80's. Holley/Weiand bought B&M's supercharger division but decided not to use the 60* V-6 version. I actually called Holley and asked about it. I tried tracking down a used B&M version a few years ago. There was a supercharger rebuilding place that had 2 of them but they did not have the lower intake piece.
Here is the B&M ad that use to run in all the Hot Rod magazines in the 80's.
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02:00 PM
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TT Slick Member
Posts: 135 From: Columbus, Georgia Registered: Dec 2004
Goat......I used the FWD timing cover to move the blower drive belt as far back as possiable. I am going with a Weber because it won't have EFI on it, I have read where everyone was getting such good performance with carburation. Yes, it indeed is a blower from a 3.8 Ford. If you look real close you can just see the water neck on the thermo. housing just below the snout of the blower drive. I had someone else post these pictures for me, I will try to get some other pictures posted of the timing cover. I really don't have any pictures of the itake itself. These were pictures taken just to make sure everything would fit-up the way I wanted. It is completely disassmbled now and all the machine work is being done on the rest of the engine. It will be some time before I get it all back togeather and running. Regards, TT Slick
I would be inclined to prefer injection with a blower because that way the rotors are run dry, with carbs the rotors are run "wet" (fuel mixed with the air) which will likely shorten their life and also create the risk of a blower explosion.
But that's just me, I'm comfortable around injection.
Originally posted by RacerX11: The Eaton blowers are designed to run dry, so the rear bearings are not sealed. You might run into issues running the carb setup.
agree with that, when fuel gets into the bearings it may toast em...
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06:51 PM
Jan 2nd, 2007
TT Slick Member
Posts: 135 From: Columbus, Georgia Registered: Dec 2004
The front bearings are sealed units, the drive gears run in oil, the rear bearings are drawn -cup neddle rollers with lip seals. The lobes of the rotors are set-up with clearance and coated. I really don't think that the risks are that great to not try this kind of build. But if I fail, well, it won't be the first time.
Regards, TT Slick
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07:43 AM
Fie Ro Member
Posts: 3735 From: Soest, The Netherlands Registered: Sep 2001
Originally posted by Will: Dont' the front bearings on an M90 get oiled by the same oil the gears turn in?
Yes it looks like that. The rears however (picture) are packed with hi temp grease, btw I need to know which grease can be used and where to get it...!
