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Author Topic: June GRM DA/SC article, your moment of ZEN  (Read 42816 times)

kramerica5000

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June GRM DA/SC article, your moment of ZEN
« on: May 31, 2006, 10:55:02 AM »
Personally I'd rather have Febi's motor, but this is a whole lot of ponies for $3k and an afternoon.

Enjoy:

http://oak.cats.ohiou.edu/~kramere/downloads/GRM_bimmer_2.pdf
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sheepdog

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June GRM DA/SC article, your moment of ZEN
« Reply #1 on: May 31, 2006, 01:02:16 PM »
Agreed.
With Febi's you get a rebuilt, fresh, blueprinted motor with more power.


But that blower sure looks nice.
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"When trouble arises and things look bad, there is always one individual who perceives a solution and is willing to take command. Very often, that individual is crazy." --Dave Berry

D. Clay

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June GRM DA/SC article, your moment of ZEN
« Reply #2 on: May 31, 2006, 03:41:14 PM »
The article mentions previous modifications. Apparently a Turner chip. Were there anymore prior to the supercharger install? Was the original 127 HP at the rear wheels or the crank? 127 at the wheel is a pretty good number but about what you would expect at the crank on a 200,000 mile motor. What about detonation, longevity, etc.? Some of the 6 cylinder forums had driveline questions. I don't see a problem there as much as  the extra compression on an old motor. Could this supercharger be immune from the same problems that the boost coming from a turbo involves?
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D. Clay

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Oops, reread 1st. paragraph.
« Reply #3 on: May 31, 2006, 08:25:20 PM »
It's 127 at the rear wheels which is roughly 150 HP at the crankshaft. This is an increase of 14 crankshaft/12 RWHP before the supercharger. Adding the cost of the other mods to the $3400 for the supercharger gives you an accurate cost for the increase to 188 RWHP. The pulleys, A/C compressor, brake resevoir, fuel injection rail, etc. could make this a $4000 turnkey deal. I would guess that the earlier modifications contribute geometrically to the supercharger's effect. My estimate is 50 to 55 RWHP with the supercharger on an otherwise stock motor.
I guess my question is what were the prior mods and how much did they cost. Are we looking at $6K for this deal.
.
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kramerica5000

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June GRM DA/SC article, your moment of ZEN
« Reply #4 on: May 31, 2006, 08:34:27 PM »
Quote from: D. Clay

I guess my question is what were the prior mods and how much did they cost. Are we looking at $6K for this deal.
.


They didn't really do much; just a chip and some magnecore wires. I have the first article posted on PDF that recounts everything they did. It will be interesting to see what DA includes in their kit. It should be complete and I would guess that it will include all of the necessary pieces.
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mrjezza

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June GRM DA/SC article, your moment of ZEN
« Reply #5 on: May 31, 2006, 10:09:49 PM »
I wouldn't think the previous chip would be a factor; I'd imagine any previous chip would be replaced because different fuel mappings would be used due to the forced induction?
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kramerica5000

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June GRM DA/SC article, your moment of ZEN
« Reply #6 on: May 31, 2006, 10:29:59 PM »
Quote from: mrjezza
I wouldn't think the previous chip would be a factor; I'd imagine any previous chip would be replaced because different fuel mappings would be used due to the forced induction?


I would have thought that too, but they bought the chip right before knowing that they were going to install the supercharger, and they made no mention of a new chip in the article. HMMMMMM???  :confused:
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mrjezza

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June GRM DA/SC article, your moment of ZEN
« Reply #7 on: May 31, 2006, 10:34:24 PM »
Well they couldn't have had a new chip considering they were helping design a new kit; any chip that came with the kit would be for the Z3.

My prediction is that, logically, the E30 kit would have to come with a custom chip made by the guys at Downing Atlanta.
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D. Clay

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I am confabulated!
« Reply #8 on: June 01, 2006, 12:44:10 PM »
M42 in 318is is rated at 136 HP by BMW * .85 driveline loss = 116 RWHP. GRM's original number is 119 RWHP - what you would expect. GRM has 125.7 at rear wheels with only the addition of Magnecor wires. I am confused! Could power be understated by BMW (this would indicate 148 crankshaft HP) or overstated by GRM?
http://m42club.com/forums/showthread.php?t=525
Makes me curious as to using coil packs which eliminate plug wires altogether.
http://m42club.com/forums/showthread.php?t=34&highlight=coil+packs
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sheepdog

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June GRM DA/SC article, your moment of ZEN
« Reply #9 on: June 01, 2006, 09:53:03 PM »
They used the same chip they put in previously.

For that little boost, a chip change would probably not be required, the computer should compensate just fine.
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"When trouble arises and things look bad, there is always one individual who perceives a solution and is willing to take command. Very often, that individual is crazy." --Dave Berry

StreetSpec_iS

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June GRM DA/SC article, your moment of ZEN
« Reply #10 on: June 01, 2006, 10:14:49 PM »
dyno readings cant be taken too literally. that said, the increase was quite decent.

also, dont discount the fact that this is a basic kit. boost increase, more effective management, and youd have yourself a stonking little car.

what do the e36 dasc guys get when the up it to 11lb?
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///Motorsport

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June GRM DA/SC article, your moment of ZEN
« Reply #11 on: June 06, 2006, 04:52:38 PM »
i kinda wish they didnt supercharge it, so we can have more in common with the project, those of us who dont have supercharger bank...
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sheepdog

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June GRM DA/SC article, your moment of ZEN
« Reply #12 on: June 06, 2006, 09:53:00 PM »
Quote from: ///Motorsport
i kinda wish they didnt supercharge it, so we can have more in common with the project, those of us who dont have supercharger bank...
They pretty much did all of the normal stuff we do before they added the supercharger.

I wonder what else they have planned though.
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"When trouble arises and things look bad, there is always one individual who perceives a solution and is willing to take command. Very often, that individual is crazy." --Dave Berry

DREWHALL

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June GRM DA/SC article, your moment of ZEN
« Reply #13 on: June 27, 2006, 07:18:24 PM »
I'm extremely interested in this because I want more power, but I don't want to swap. I was afraid I would HAVE to swap. If I can get this much for 3-4 grand, I'd rather this than put in another engine for the same price.
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kramerica5000

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June GRM DA/SC article, your moment of ZEN
« Reply #14 on: June 27, 2006, 09:51:58 PM »
DO IT!!

Then tell us all the details . . .


Quote from: DREWHALL
I'm extremely interested in this because I want more power, but I don't want to swap. I was afraid I would HAVE to swap. If I can get this much for 3-4 grand, I'd rather this than put in another engine for the same price.
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