What OEM superchargers are best to fit on a GS?
05-27-10, 09:01 PM
#1
What OEM superchargers are best to fit on a GS?
I've heard the Mustang Cobra's Eaton is good... What about the Eaton M90 that came factory on GMs 3.8L engine (like in the GranPrix GTP, Buick Regal GS, or Bonneville SSEi)? Or the Ecotec supercharger out of a Cobalt?
Thinking about a budget supercharger setup around 6 PSI.
Of course mileage/condition is a concern with any supercharger, I'm just looking for models/years of supercharged cars that might be best suited for pulling an SC from for this type of project... Looking on Craigslist/eBay, I see a few used SCs around $200...just gotta machine the mount and get a new belt...
Thinking about a budget supercharger setup around 6 PSI.
Of course mileage/condition is a concern with any supercharger, I'm just looking for models/years of supercharged cars that might be best suited for pulling an SC from for this type of project... Looking on Craigslist/eBay, I see a few used SCs around $200...just gotta machine the mount and get a new belt...
Last edited by Frankdorn; 05-28-10 at 03:20 AM.
05-30-10, 11:33 PM
#3
I've done a LOT of reading on this over the weekend...and am very much considering persuing a project. Here's my thoughts/plans -- experts, please chime in.
Eaton M90 supercharger
Still wondering about an intercooler...under or behind the supercharger.
This guy did kind of what I'm thinking:
http://www.candmnovelties.com/pages/page3new.htm
This guy DID what I'm thinking, on a 1uz, BUT with non-VVTi heads:
https://www.clublexus.com/forums/per...r-project.html
And...
http://www.planetsoarer.com/supercha...al/JimRoal.htm
And...
https://www.clublexus.com/forums/per...on-sc-pic.html
Thoughts?
Eaton M90 supercharger
- Sourced from a Grand Prix GTP, Bonneville SSEi, Regal GS, or Thunderbird SuperCoupe. Used but in good shape, ~$200
- www.pulleyboys.com ~$75
- Hopefully cheap!! Anywhere between free and $200 I suppose...
- ~$25
- Remove the top half of manifold and recycle.
- Mill the sides of the bottom half down for better hood clearance.
- Trace the outline of the newly-milled top onto 3/8" aluminum plate including intake runner hole locations. Also drill mounting holes.
- Take to professional welder ($150) to connect the two cleanly.
- Add sides and add a top plate for the supercharger to bolt to.
- Fab about a 170º elbow to connect the intake pipe (~$50) to the back of the supercharger and hook the throttlebody and MAF sensor onto that.
Still wondering about an intercooler...under or behind the supercharger.This guy did kind of what I'm thinking:
http://www.candmnovelties.com/pages/page3new.htm
This guy DID what I'm thinking, on a 1uz, BUT with non-VVTi heads:
https://www.clublexus.com/forums/per...r-project.html
And...
http://www.planetsoarer.com/supercha...al/JimRoal.htm
And...
https://www.clublexus.com/forums/per...on-sc-pic.html
Thoughts?
Last edited by Frankdorn; 05-31-10 at 12:51 AM.
05-31-10, 01:53 PM
#4
so you are going to buy a junk intake manifold, gut a square shape on top of the manifold. Weld, an adapter to the used manifold...then attach the supercharger to the adapter?
sounds good!
please add pictures.
also, isn't there another version of charger that is slimmer but also produce more force at lower rotation? That should give better clearance to the hood and also runs cooler at higher PSI.
sounds good!
please add pictures.
also, isn't there another version of charger that is slimmer but also produce more force at lower rotation? That should give better clearance to the hood and also runs cooler at higher PSI.
Last edited by sam430; 05-31-10 at 01:57 PM.
05-31-10, 02:29 PM
#5
I might be interested in persuing this too! So let me get this right, you could put a supercharger on a GS for less than a Grand? It doesnt seem that difficult to do.
Im guna be watching closely becuase i am definately interested to do this as well!
Im guna be watching closely becuase i am definately interested to do this as well!
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05-31-10, 04:18 PM
#8
Sam430: Yup! But I'll try to find a charger is really nice shape. I'm talking to a guy now about one with 12,000 miles on it and a fresh oil change. There are actually several versions of the Eaton -- you might be thinking of the M62 which came on Chevy Cobalt SSs. Not bad, but they're typically for smaller-displacement engines (ie. 4-cyl). M112's are bigger, and also not bad, but they're less efficient. The M90's seem to be kind of the sweet spot.
TLCoats: That's what its lookin' like... After selling my K&N FIPK, I doubt I'd net more than even $500 total cost. Crazy. A little unnerving even. But then again, there's a lot of labor involved. I'm budgeting $1,000 for obvious reasons.
I would almost definitely need upgraded injectors, fuel pump, and likely a piggyback for 8+psi.
JeffTsai: I would completely agree…if I was running 8psi or more, which is why I’m sticking to 6, because I’m just not that car savvy, and I don’t have the time to tinker with it too often. Man, if you could swing on up to Wisconsin, lets grab a couple beers and go over this, eh?
I need to bolt on and be done, so it has to be well-planned, thorough, and simple. I’d plan to install a wideband and boost gauge, as well as a Neo or SAFC2, which or course would need to be dyno-tuned. That should be about it… I could definitely use your input, though, despite this being a “simple” project. I don’t want to take that fact for granted and blow my motor up!
TLCoats: That's what its lookin' like... After selling my K&N FIPK, I doubt I'd net more than even $500 total cost. Crazy. A little unnerving even. But then again, there's a lot of labor involved. I'm budgeting $1,000 for obvious reasons.
I would almost definitely need upgraded injectors, fuel pump, and likely a piggyback for 8+psi.
JeffTsai: I would completely agree…if I was running 8psi or more, which is why I’m sticking to 6, because I’m just not that car savvy, and I don’t have the time to tinker with it too often. Man, if you could swing on up to Wisconsin, lets grab a couple beers and go over this, eh?
I need to bolt on and be done, so it has to be well-planned, thorough, and simple. I’d plan to install a wideband and boost gauge, as well as a Neo or SAFC2, which or course would need to be dyno-tuned. That should be about it… I could definitely use your input, though, despite this being a “simple” project. I don’t want to take that fact for granted and blow my motor up!
Lets do this. Things seem pretty easy except for the intake manifold. How would we get it to work?
06-01-10, 08:36 PM
#15
I'm picking up a used (14k mi.) Eaton M90 off a Grand Prix tomorrow morning. I'll need to hunt down a 2.8 or 2.9" pulley pretty soon, too...and a wideband gauge, a boost gauge, an Apexi Neo or SAFC2, one step colder plugs, and gasket material. And 1/4-1/2" aluminum stock.
TLCoats: I don't know yet to be honest. I'm also wondering about the bypass valve and how that gets plumbed. There are enough resources I plan to hit up for some info. Probably would be a bad idea to solicit advice on the Lextreme board as well...
Sam430: Yeah, I was also pondering the importance of appearance in this whole thing. I'd love to chrome plate the SC and the custom manifold, but its not a show car. Granted I'll keep it as clean as I can, but eat-off-the-engine clean isn't something I even pretend to have time to maintain. So, I'm with you -- function before beauty. I'll keep it respectable, though.
I'm starting to sketch plans now, but it'll probably be the beginning of July before I go full force into it due to other things going on. (I'll probably start a new thread once the project is up and going.) Until then, any suggestions are MUCH appreciated!
I'd say the interesting/unique part about my project is the budget -- married with children, and a quickly growing sense of financial responsibility, doesn't leave a ton of room (with what I make) to blow $10k on an extra 100hp. So I plan to do it for less than $1,000. That's the objective: 6psi, reliable, under $1,000.
Wish me luck in not blowing up my damn engine.
TLCoats: I don't know yet to be honest. I'm also wondering about the bypass valve and how that gets plumbed. There are enough resources I plan to hit up for some info. Probably would be a bad idea to solicit advice on the Lextreme board as well...
Sam430: Yeah, I was also pondering the importance of appearance in this whole thing. I'd love to chrome plate the SC and the custom manifold, but its not a show car. Granted I'll keep it as clean as I can, but eat-off-the-engine clean isn't something I even pretend to have time to maintain. So, I'm with you -- function before beauty. I'll keep it respectable, though.
I'm starting to sketch plans now, but it'll probably be the beginning of July before I go full force into it due to other things going on. (I'll probably start a new thread once the project is up and going.) Until then, any suggestions are MUCH appreciated!
I'd say the interesting/unique part about my project is the budget -- married with children, and a quickly growing sense of financial responsibility, doesn't leave a ton of room (with what I make) to blow $10k on an extra 100hp. So I plan to do it for less than $1,000. That's the objective: 6psi, reliable, under $1,000.
Wish me luck in not blowing up my damn engine.
Last edited by Frankdorn; 06-01-10 at 08:54 PM.