Similar lower intake manifolds, aren't they? But if you're going for an M112, then the adapter would be different anyway I think.

 

Exactly. M112 in the position I want it would have the TB opening facing the firewall, thus I'd need a 90 degree tube for it. M90 has (like you mentioned) TB on almost stock location.

And VQ35 ports are perfectly round, almost inline (lower intake manifold). VQ30 ports are oval, you can't just throw on 2" tubes like I'm going to do for the 3.5.

 

:sigh: Let me know then how expensive/difficult it was for you and I'll try and do my own or have a guy I know make one for me (he has experience building/porting manifolds for old V8's).

 

Sorry man. But at least you'll have a model to base this off (if I dont choke on the project that is lol ).

 

You better not

Oh well, even if you do, I'll still probably go through with it in the future...

 

Almost won a '03 Cobra M112 on Ebay but I got screwed at the last minute

Did some research and I might be going with a twin screw instead (if I can find an OEM one that's reasonably cheap, anyone have suggestions?).

Main reason is that I could (safely) run it without going through the hassle of an intercooled setup for the boost levels (6-7 psi) I am shooting for. Just a custom plenum and that's it.

Might look at a SLK series Mercedes twin-screw (from a supercharged 3.2L V6) but the design of this one is off-the wall wierd compared to all the other Roots/Twin screw SC's I have seen. Anyone got better suggestions for an OEM twin-screw?

 

http://cgi.ebay.com/ebaymotors/2003-...40916718QQrdZ1

http://cgi.ebay.com/ebaymotors/04-03...42195887QQrdZ1

http://cgi.ebay.com/ebaymotors/Eaton...41706983QQrdZ1


Bunch more up right now

 

Those Thunerbird M90's would not be too great for our purposes. Mostly due to the top-mounted intake port. This would create hood clearance issues. Also, if we stick with the GM 3800 version of the M90, we keep a near-stock throttlebody location and everything, not to mention the aftermarket for it is better as well as support.

 

So no one wants to support my twin screw idea then?

Food for thought:

http://www.kennebell.net/techinfo/general-info/twinscrew-vs-roots-fromcatalog.pdf#search='twin%20screw%20vs%20roots'

http://www.kennebell.net/techinfo/general-info/TWINSCREWvsROOTS.pdf#search='twin%20screw%20vs%20r oots'

 

I'll look into it. PM sent, btw.

 

I support it. A twin screw s/c is so much better than a roots s/c. A screws would be the only s/c I'd personally use over a turbocharger. They are so much more efficient than a roots and you retain the low end power that the roots are able to provide. Definitely the better of the positive displacement s/c's out there.

The only downside to them is they're usually very expensive, but if you have the money to spend that's the way to go.

 

Which is why I want to look for an OEM one. So if anyone knows which production cars used a twin-screw type SC, let me know.

 

Well you mentioned the SLK AMG blower above, and that seems to be the only OEM application I can find. Also as you mentioned, it's very odd, to say the least. It looks like it'd fit nicely, but I have not the slightest clue what those tubes are for? They don't involve the blower at all...they almost look meant for exhaust or something?

 

Yeah I know. I'd have to find some engine bay pictures. If it weren't for those stupid tubes I'd be happy. Also it looks like the bottom outlet is somewhat restrictive. Maybe it's just me...

 

I don't think it's all THAT restrictive given the size of the blower and the design. Could be ported a little, though...

Found a link...
http://www.slk32.com/pages/engines(usa)/engines.html

Very complicated setup that AMG used. Set the blower side from all of it, though, and it's quite simple. Those tubes act as the lower intake manifolds it seems. Hack them off and make your own adapters.

You'd need adapters to hold the thing to the engine (not hard) but also you either need the factory throttlebody (not included in that ebay auction...notice the 2 intake holes on the back side) or you'd need to make your own custom manifold almost to adapt a different throttlebody to the uber-wide area covered by the 2 intake ports.

 

"This is me holding up my hand" Excuse a blower newbie, but I bought a supercharged 3.3 2003 Frontier Crew Cab to trailer the max this season, and that blower sits right on top the engine. Of course, it's a RWD engine, but with belt drive to the blower, and used ones $400 or so, does this blower have any potential?? Just curious - the truck does scoot pretty good from a launch, but has no top end - of course, with nitrous ????

supercharger

 

They only used something like a M62 on the VG33ER. The M90 on the GTP would be a better choice for some more power.

 

thought this might have some interest to you all.

http://chicago.craigslist.org/pts/136611800.html

Eaton Supercharger for $225 obo in Niles, IL

 

^ What he said. The 33ER's blower is extremely tiny. The M90 is probably too small as it is to get a ton out of the VQ, which is why we're looking bigger, although the M90 would be good to get things started and worked out. No way in he11 would I slap an M62 on top of my engine though unless someone was giving it to me for free and wanted to do all the custom work for me for free
Thanks for the heads up. Appreciate it. I can get one for cheaper locally though

 

Well it doesn't look I'll be buying the one on Ebay:

http://cgi.ebay.com/ebaymotors/2002-...spagenameZWDVW

Price just jumped from 202 last night to 720$U. Yikes Maybe I should take this as a sign lol

There's absolutely nothing on car-part either. These b*tches are hard to find.

 

What the...I just noticed that blower is for sale right here in my town! I wonder who's selling it? Nobody here owns an AMG car period, let alone an SLK...and very few people are even into cars...wtf.

 

Tatanko, thats the oem manifold.

The MT-90 comes on the Grand Prix GTP too. Maybe you can Car-Part that.

 

Because of what I've read I'm going to pass on the roots blower (ok, maaaaybe an M112, but no M90) and keep looking for a twin screw.

 

It's not quite the OEM manifold, we already found out why and I explained it.

BTW, it's called an M90...I don't think you've read anything I've said, have you? I mean no offense, I respect you and all, but I don't think you read much of what I said...I've been the one giving out M90 info this whole time and probably know more about it than anyone else on this board besides members like Craig Mack that don't come around anymore.

Again, not looking to pick a fight, but I promise it'd be worth your time to read what I've posted already.

 

You're right, I just skimmed everything. I remember all the Craig Mack info as well as many deep discussions with a friend that was planning on putting a twin screw on his SC400. The manifold in question looks like its from the 3.2L Mercedes Kompressor engine.

I was talking about this setup as well as a cross shaft centrifugal blower the other day.

 

Yeah, it's from an SLK32.

Cross shaft centrifugal you say? What's the reasoning behind that when we already have a proven setup with the V1 plate and V1/V2 blowers?

 

The main reason is because of the amount of piping involved. I kinda want THIS for a kit.

 

That is a very nice setup. How would the shorter piping stack up to the loss from the long cross shaft, though? Is it really worth the switch?

 

I like being different. Actually there is no play on the shaft and it doesn't weigh that much. The torque on the bar is alleviated by a bearing mounted above the alternator.

As for the Kompressor, are you going to use the water cooled aftercooler? A water pump is bolted in underneath the battery tray on Josh's, James' and my setup.

 

Ahh, I see, very nice. That would be a nice setup. You could have it blowing almost right into the throttlebody.

I'm not sure what JClaw's plans are and I don't have any specific plans because why make plans when I don't have the money right now anyway?

 

I say we produce it here. Lets talk with some people

 

Haha...well, would it be cheaper than a V1-type Stillen setup?

 

I could delve deep into my thought processes, but I prefer to keep this thread a roots blower related one.

This subject should be discussed here.
http://f.maxima.org/showthread.php?t=204145

 

Yeah, you're right.

Back on topic

 

When my friend was considering doing this to his SC400, I told him to make a heat sink box that could fit over the top of it. The abradi efficiency of a roots style blower is lower than a centrifugal blower, so by using sheet metal fins, you can lower the temps of the unit.

 

Hmm...interesting. That's a possibility for me, should hood clearance allow it, since I don't want to go intercooled (atleast not right off the bat).

 

The Magnuson/Eaton Model MP90, 4th Generation is a “State of the Art” supercharger, engineered for 3.0 to 5.7 litre.
http://www.capa.com.au/eaton_mp90_4th.htm
VG30

 

Good ideas, but, the MP90 would cost far too much and wouldn't be worth it due to it's size. The Gen III M90 isn't much different and I can pick one up for <$100.

I like the ideas about the VG33ER, and it would be great if we could grab a lower intake manifold off of one and just slap it on, but I don't think we can