[W126 Coupe] 89 560sec

[Robert Karl Stonjek]

The later model 560s had 10:1 compression ratio compared to the pre (I think) 88 model.  The high power version had 10:1 ratio through the entire production run.  The high power version has 300HP, but most of that comes from the much freer flowing exhaust system - no cat, fewer mufflers, dual manifolds for each cylinder bank.

I note that from a standing start, a full throttle start will drop the transmission into first gear (if the transmission switch is set to S instead of E) and the wide rear tyres I have on my car do spin (265/35 18" low profile rear tyres) but no squealing or smoke.

If your car has dual cats then with the higher compression it is more likely to be the 200kw version (273HP).  One thing that makes any car go faster is less weight, so don't rule out divorcing the wife and/or selling the kids to the gypsies :)

Kind Regards
Robert Karl Stonjek


> 
> Welcome to the site. Drive the car first. I think you will find plenty of power especially at highway speeds. I believe what is more important than HP is torque. That is what makes cars drivable. The car starts off from a standstill in second gear but you can find out here about a kit to make it start in first. The rearend is geared for the road and not red light races so you could change the rearend for more zip around town. Chips don't work with this car's fuel injection set up. Some other minor mods will get you just a few HP. For $3000 + you can supercharge it and gain 150 HP but now we are back to money. The rear end change is $2000. So the first gear start kit at $300 or much less might be all you want to consider for now. If you want a real tire smoker  get a Mustang. If you see that Mustang on the interstate the race is in you favor. Enjoy your ride. Jim Alex
> -----Original Message-----
> >From: timitron at winfirst.com
> >Sent: Apr 12, 2006 4:41 PM
> >To: mbcoupes at mbcoupes.com
> >Subject: [W126 Coupe] 89 560sec
> >
> >Hello,
> >I just subscribed to this list and already have a question I'm hoping someone has information on.  I just purchased a 1989 560SEC on Ebay, though I have not yet received it.  I've been reading the specs on this car and notice the horsepower is 238.  I love a lot of power, especially torque and was wondering if there are any aftermarket performance enhancement products that I could add to boost the power?  I read that the 0-60 is 7.0.  Is this accurate?  I live in California, so I know they are pretty strict about emissions.  I don't want to spend a fortune....probably under $1,000.  I also don't want to alter the appearance of the car, just the performance.  I'm curious if there is anything for this model?  A chip or some other recommended performance modification?  By the way, I'm not very mechanically saavy, so please describe for the average joe.  Thanks so much!
> >The MB Coupes Website!
> >W126 SEC Mailing List
> >Postings remain property of MB Coupes, L.L.C.
> 
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.pairlist.net/pipermail/mbcoupes/attachments/20060413/f41ea759/attachment.html