SL/R129: Supercharger or 7.2 for my V12 ?
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Joined: Mar 2005
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From: Adelaide, Australia. Formerly Bristol, UK.
1998 SL 600 ///AMG. 1997 SL 320. 1999 SLK 230K. 2001 BMW R850.
Supercharger or 7.2 for my V12 ?
I've been quoted $3000 to have my SL600 bored to 7.2l, on the other hand I'm waiting on a quote for an American supercharger which could be fitted in Holland.
Eventually I'll have to make a decision on which option I go for.
Which do you think would be better / more exciting...
Eventually I'll have to make a decision on which option I go for.
Which do you think would be better / more exciting...
Thread Starter
Member
Joined: Mar 2005
Posts: 233
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From: Adelaide, Australia. Formerly Bristol, UK.
1998 SL 600 ///AMG. 1997 SL 320. 1999 SLK 230K. 2001 BMW R850.
Originally Posted by TheV12pwr
Maybe you mean $30.000 ....
for $3000 you can get the new pistons only
for $3000 you can get the new pistons only
I've used this company before on an old 1968 MGB GT, I'm happy with they're work.
Apparently the extra skim is so tiny that the same pistons are re-used, just new rings. Remember, the increase is dispersed across 12 cylinders!
Still, I'll seek further "qualified" advice before committing...
Member
Joined: Dec 2004
Posts: 221
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From: L.A.
SL000
So Funny
Just wonderin'...who is gonna take the engine apart...you?, or this is included in the price.
You are so funny
You have NOOOO idea...just new rings a?
Post the same thread in the tech help...let them know what is goin' on in UK
This is NOT yours IS IT?
You are so funny
You have NOOOO idea...just new rings a?
Post the same thread in the tech help...let them know what is goin' on in UK
This is NOT yours IS IT?
Last edited by TheV12pwr; May 15, 2005 at 05:11 PM.
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From: UK
SL55 AMG
This guy is a dreamer...
Working on your MGB GT, a relic from the forerunner of the failed MG Rover, does not in any way qualify them to work on the V12. The capacity increase from 6 to 7.2 litres (+20%) requires an increase of 9.54% in the bore which is hardly tiny.
Dream on...
Working on your MGB GT, a relic from the forerunner of the failed MG Rover, does not in any way qualify them to work on the V12. The capacity increase from 6 to 7.2 litres (+20%) requires an increase of 9.54% in the bore which is hardly tiny.
Dream on...
Last edited by blueSL; May 15, 2005 at 09:54 PM.
Thread Starter
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Joined: Mar 2005
Posts: 233
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From: Adelaide, Australia. Formerly Bristol, UK.
1998 SL 600 ///AMG. 1997 SL 320. 1999 SLK 230K. 2001 BMW R850.
Originally Posted by blueSL
This guy is a dreamer...
Working on your MGB GT, a relic from the forerunner of the failed MG Rover, does not in any way qualify them to work on the V12...
Working on your MGB GT, a relic from the forerunner of the failed MG Rover, does not in any way qualify them to work on the V12...
Dreamer eh! We hear alot about your cars & knowledge, only we never see'm!
Quick, you better get your camera out & visit the west end!?!
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From: Norrtälje, Sweden
SL60 ///AMG
Originally Posted by Pigzmickey
.... Apparently the extra skim is so tiny that the same pistons are re-used, just new rings. Remember, the increase is dispersed across 12 cylinders!
/Håkan
Last edited by SL60 ///AMG; May 16, 2005 at 05:16 AM.
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From: Renton, WA
1992 500SL (wife); 1996 Dodge Viper RT/10
Sorry, I left this site - sold my 500SL, but when I saw this post, I just had to respond !!!
Ain't No Way.
SL600 Bore is 89mm, Stroke is 80.2mm
In order to obtain 7.2L, leaving the stroke the same (80.2mm), the bore must be 97mm, an increase of 8mm.
How big is 8mm, you European metric system users tell me (over a 1/4 inch), but there are no piston rings that can take up that much slop. Now, if the crank is welded and offset ground to obtain a longer stroke, and head shims (thicker head gaskets) are used to compensate for the pistons popping up above the block, or use shorter rods, and the head cc volume reduced to keep the compression ratio at stock, and, and, and............, you got $30,000+, that's thirty thousand.
Later; maybe gone, unless I see something else as insane as this.
Ain't No Way.
SL600 Bore is 89mm, Stroke is 80.2mm
In order to obtain 7.2L, leaving the stroke the same (80.2mm), the bore must be 97mm, an increase of 8mm.
How big is 8mm, you European metric system users tell me (over a 1/4 inch), but there are no piston rings that can take up that much slop. Now, if the crank is welded and offset ground to obtain a longer stroke, and head shims (thicker head gaskets) are used to compensate for the pistons popping up above the block, or use shorter rods, and the head cc volume reduced to keep the compression ratio at stock, and, and, and............, you got $30,000+, that's thirty thousand.
Later; maybe gone, unless I see something else as insane as this.
Thread Starter
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Joined: Mar 2005
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From: Adelaide, Australia. Formerly Bristol, UK.
1998 SL 600 ///AMG. 1997 SL 320. 1999 SLK 230K. 2001 BMW R850.
Originally Posted by blueSL
I agree...
Thread Starter
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From: Adelaide, Australia. Formerly Bristol, UK.
1998 SL 600 ///AMG. 1997 SL 320. 1999 SLK 230K. 2001 BMW R850.
Originally Posted by blueSL
I don't think you should bother. Your car is worth, what, £15k? If you modify it, it will be close to nothing, no-one is going to touch it. Just enjoy that car as it is...
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From: Norrtälje, Sweden
SL60 ///AMG
Originally Posted by blueSL
.... Your car is worth, what, £15k? If you modify it, it will be close to nothing, no-one is going to touch it. Just enjoy that car as it is...
However, I agree with blueSL about that a supercharger will drop the value drastic. Just enjoy it as it is, and spend your money to get it to mint condition.
Last edited by SL60 ///AMG; May 17, 2005 at 06:49 AM.
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From: Middlesex, London
Mercedes SL600, S600, C250 TD
Originally Posted by blueSL
I don't think you should bother. Your car is worth, what, £15k? If you modify it, it will be close to nothing, no-one is going to touch it. Just enjoy that car as it is...
In the UK the SL600 is not worth that much. My car stands about £17k, but you see them advertised at £25k+ but they never sell. Too expensive to run and maintain for the British. If you went to P/x a 1998 car £17-18k is the price.
Last edited by KLP 92; May 17, 2005 at 05:02 PM.
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From: Middlesex, London
Mercedes SL600, S600, C250 TD
And noone wants to buy a modified SL600. It doesn't appeal to the boy racers as their pockets aren't that deep, and majority of people who are after a car like that will want a stock original.
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From: L.A.
SL000
Originally Posted by Pigzmickey
Well it looks like this option is a non starter then... How about the supercharger? I'm still waiting on the quote...
To me, you are not ready for any improvments yet,or U R too late for it...
Resale value depends...
if you are thinking of selin' it,why do you even bother???
Thread Starter
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Joined: Mar 2005
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From: Adelaide, Australia. Formerly Bristol, UK.
1998 SL 600 ///AMG. 1997 SL 320. 1999 SLK 230K. 2001 BMW R850.
I don't want to sell it, I'm hoping to take it to Australia with me when I migrate next year. As for value, I was recently offered £21K. I think the value depends on many things, condition, colour, mileage, options, rarety, etc...
I am happy with it, I think it's a very smooth & averagely fast car for £20K. As for fuel, I don't think it's that bad, I only got about an extra 50 - 75 miles per tank from my SL 320.
And V12pwr, whose engine is it that you keep posting? It's not mine:
I am happy with it, I think it's a very smooth & averagely fast car for £20K. As for fuel, I don't think it's that bad, I only got about an extra 50 - 75 miles per tank from my SL 320.
And V12pwr, whose engine is it that you keep posting? It's not mine:
