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I finally found a German guy that had put a Cobalt/Saturn M62 on a R53, GP1 actually, and got a good tune with it. He posted up up a video and the power gains, 311 ps, are quite good when one considers how cheap they can now be purchased here in the US. Cheap enough that within the last week five more have been shipped over the Atlantic to join four that I sent over a couple months ago. In a couple of months there should be more dyno data out there with both stock and BVH heads.


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The m62 is definitely a good choice if you can afford anything better. A good way to look at it is the m62 is very old tec . It’s a bigger supercharger then the TVS900 but Produces less power and more heat . The m62 is just not as efficient as the TVS900. Then there is also the problem of not having a kit available ( because the after market deemed it not worth it for the gains) so you’ll need to spend weeks (if doing a nice job) to build the necessary Parts. There is talk about someone building a kit or parts of a kit but at this time it’s just talk . The m62 is great for someone with time and needing to do it on the cheap .
 

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Figures do look great, very Sprintex-like. Would be nice to see the power curve. What other mods on the GP? And how much was it making with the M45?

Why does Jan and all the other reputable mini tuners hate the M62 so much? I get it that there are better options (TVS 900 comes to mind), but there must be some other drawbacks than just their profit margins..?
 

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Heat and lack of support are two reasons any other is 90% or more are used and the only real Rebuildable part of the m62 is to replace the bearings. If the case or rotors are damaged it’s a Dunn unit
 

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Hmm heat like what a TVS produces? The below graph was prepared by Harrop's and for the Yanks that 197.5 works out to 387 degrees. A TVS kit is $3300 US and yes it carries a warranty. You want to spend your money on it, no problem. The Cobalt M62 is an older generation Eaton and majority you find are going to be used although there were some Dealer Stock units that sold a couple months ago for around $900 US. I recently bought a spare for $250 that had 80k miles on it but sold it as I found another spare with only 30k miles for $250 US, I will be able to sell the pulley case gearbox, the bpv actuator and the throttle body to the Cobalt guys for a couple of hundred dollars.

So Bixby or Scott or whatever you name is, spend your money the way you want and let others decide how much money they want to spend on a car more than 14 years old . . . .


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My engine did not blow, sorry.
well damn all I did was answer a guys question as to why most tuners don’t like the m62 . Heat and lack of support. I never brought up cost because the tuner wouldn’t care about what you paid for your stuff plus what tuner wants to work with outdated parts . I would think most tuners would want to get the most out of the cars they have there name tided too . Both in Performance and longevity . Now if a car owner is willing to lose a bit of performance in the name of budget that’s fully understandable. To claim it just as good or to say it’s just about the same isn’t true.
 

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I'm a dumb bastard so none of this means shit,

1.) I figured out how to mount a rebuilt Cobalt SS/Saturn Redline M62, which I bought for $300 US from a guy in Pittsburgh, The M45 pulley gear case bolts to the M62 case without any modifications.

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2.) I modified the existing black intake duct so it would fit on the M62.

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3.) Played around with the belt tensioner and ended up shortening the tensioner spring to provide approximately 10% more tension on the belt. I made up a spacer so that the overall dimension was the same.

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4.) Did logging with two different size pulleys; 65,5 (stock S) and 61. I was pushing 1.24 bars of boost through my ported/intermediate valve head with the 61 and below are some IATs.

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5.) Without an electric water pump, I can make a kit up for less than 300 GBP.

It might not be the prettiest damn thing and drove it over 24000 km with not one problem. But I am just a dumb bastard so what can somebody with brains be able to do?
[/QUOTECharlie/hack
 

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Charlie / hack
Don’t take this the wrong way but even though I’m sure you have a lot of time in trying to get the m62 installed on your car it’s not the same as being the one at came up with it . I have seen information on people doing m62 swaps back in 2006 (15years ago)
All the information you are claiming in most of your posts can be found in Posts from 15 years ago. Plagiarizing work isnt the sign of Genius .
with that said I’m not claiming that installing a m62 isn’t a lot of work . Especially doing it in a shop like you have described yours . Home garage with limited equipment . So yes good for you on getting it done and working. With that said you had very little to figure out as long as you have Internet access and can read . It’s not unlike your latest supercharger project. Not sayin it’s easy but that the Recipe has already been written down for you to copy
 

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For the brown noses and those that have not actually installed a different supercharger that is specifically made for a R53, I want to point a few things out, 1.) DDM created a R53 kit back in 2007 with a MP62. They posted some pictures that you can find but there were no specific details on how it attached to the Tritec engine. It was not until I bought the DDM prototype after it sat on a shelf for 12 years and discovered that it used the MINI M45 pulley gear case. 2.) The Cobalt/Saturn M62 is a true Eaton where the MP62 is a Magnuson, The cases are different so what worked for DDM other than the M45 pulley gear case did not work for me. Me the dumb bastard had to figure out where to cut the case, mount the horn to the discharge deck and as the intake port on the M62 is in a different place than the MP62 create/fabricate the intake duct. 3.) There was no information on belt slippage or how too address it. 4.) There was no log data that you could pull up,

I am also a dumb bastard because I have dumped a fair amount of money in my R53 albeit not as much as some others. So for the even dumber bastards that have spent a whole lot more than me, I made this up I while back. It takes no brains to figure out why Jan pisses on the M62. The below numbers do not include a cam, head gasket or labor as those values would be similar for either.

So the square root of what sod is worth plus the numbers below and you are underwater big time . . . .


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Your RMW pricing is off . The RMW tunes are normally included with the upgraded parts you have listed so
- $650
the price on RMWs head is also off as I’m pretty sure he sells that as a package deal to include install parts .
the $900 you are claiming is a Approximate price approximate price on a used supercharger and a homemade install kit . Could cost more or less . So not set in stone as this would claim and Obviously not including the time and effort to build . A TVS900 is going to be more do to the fact that it’s new with a Professionally built installation kit and professionally built installation kit and a very good warranty.
The injectors from eBay are just that . Good luck getting injections that Actually perform within the perimeter’s they advertise not to mention that don’t leak from the Nozzle or atomize the fuel . as far as the other eBay parts you listed you are not the first to Discover that you can buy cheap crap cheap on eBay.
Now the thumper head is a head ported head done by eye . Anyone can tell that doing heads in this way is fine . I myself have ported many for myself and customers in the past with that said doing them by hand also means your not going to get the same product everytime . This is why a CNC job cost more . You get repeatable testable performance . Buying a hand ported head is a crap shoot . You may get a great headwith all the ports matching in size and shape and flow making great power but sadly the next head may fall short. I’m sure thumpers heads are all better then the stock head . I don’t know thumper he could be the very best porter in the US at just happens to be a small shop . He’s still not going to be able to sell performance heads that are Consistent across the board.

What I’m getting to is you are always Comparing The cost and performance of professionally built race parts and tunes the are proven Championship winning setups to your Collection of eBay and home made parts .
I have told you many many times that I’m all for people Tinkering as you call it and upgrading there cars on there own . Very good gains can be made this way . Not to mention the Enjoyment enjoymentthat can be had from doing so . I own a fan shop , that’s what my business is based on . Now as far as you implying that I have never modified a car or supercharger to fit a car before I hope you were joking .
 

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Your RMW pricing is off . The RMW tunes are normally included with the upgraded parts you have listed so
- $650
the price on RMWs head is also off as I’m pretty sure he sells that as a package deal to include install parts .
the $900 you are claiming is a Approximate price approximate price on a used supercharger and a homemade install kit . Could cost more or less . So not set in stone as this would claim and Obviously not including the time and effort to build . A TVS900 is going to be more do to the fact that it’s new with a Professionally built installation kit and professionally built installation kit and a very good warranty.
The injectors from eBay are just that . Good luck getting injections that Actually perform within the perimeter’s they advertise not to mention that don’t leak from the Nozzle or atomize the fuel . as far as the other eBay parts you listed you are not the first to Discover that you can buy cheap crap cheap on eBay.
Now the thumper head is a head ported head done by eye . Anyone can tell that doing heads in this way is fine . I myself have ported many for myself and customers in the past with that said doing them by hand also means your not going to get the same product everytime . This is why a CNC job cost more . You get repeatable testable performance . Buying a hand ported head is a crap shoot . You may get a great headwith all the ports matching in size and shape and flow making great power but sadly the next head may fall short. I’m sure thumpers heads are all better then the stock head . I don’t know thumper he could be the very best porter in the US at just happens to be a small shop . He’s still not going to be able to sell performance heads that are Consistent across the board.

What I’m getting to is you are always Comparing The cost and performance of professionally built race parts and tunes the are proven Championship winning setups to your Collection of eBay and home made parts .
I have told you many many times that I’m all for people Tinkering as you call it and upgrading there cars on there own . Very good gains can be made this way . Not to mention the Enjoyment enjoymentthat can be had from doing so . I own a fan shop , that’s what my business is based on . Now as far as you implying that I have never modified a car or supercharger to fit a car before I hope you were joking .
I really need to find out what’s going on with my autocorrect lately 🙄
 

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Thank you Mr. Brown Nose for pointing out so many great facts that I am sure those you consider dumb bastards cannot figure out themselves, that being the M62 is a good bang for buck mod for the guy with a 15 year or older that is worth the square root of sod.

Hmmm package prices yes but why didn't you provide some costs from the Arsehole? While at that, list all the Arsehole goodies you got on your car as if with the square root cost of sod and even the "alternative" prices puts a person underwater than with what you have spent, you are down there with the Titanic. I am sure shortly either you or the Arsehole will remind everybody how many races the cars with his parts won. Why he is a legend in his own mind and a god to the ever dwindling numbers of Fanbois that follow him.

Got to love the "ignore button" as Mr. Brown Nose will now join the Arsehole as well. On the Arsehole, I have heard some comments from folks on the west side of the pond that it is so great that the Arsehole cannot help them solve some of their problems with the stuff he sells but can take the time to make some posts on an east side of the pond forum.
I’m not really sure what your going on about now. I already told you many times that that the m62 is a good upgrade on a budget . Same with some of your eBay stuff but I can’t see how you can compare cost . Better performance normally cost more and not everyone is going to put the same value on the difference . As far as what I have spent on my wife’s car I really don’t know or care because I don’t keep track. I buy parts for this car and my others when I feel the desire to play with them and as a member of the working Community ( not on a fixed income) I can choose to not put a end Budget on this project or any of my other wheeled toys , none of which I can see as being any of your business. I’m not the one trying justify my build or Focused on what you spend .
As I told you before once Before , when the weather warms up the wife and I are more then happy to drive down to NC . We go down there to play on the dragon anyways . You and her can go fine a straight Stretch so you can see the difference in the cost .
 
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