> > Subject: Re: [MBZ] Premium v. Regular > Your > poor m103 with a 9 or 10 :1 CR, no wonder it is pinging! An no, there is > not a knock sensor on that motor (at least > the early ones). They will ping until they crack a ring and melt a piston. > Look at the m100 (6.3) rebuild pictures on > my website. That is what a lean mixture and advanced timing will do for > you. Not much different than running crap > fuel in a high compression motor. In the end one always pays... sooner > (good fuel) or later ($$$ to your mechanic > and parts dealer). > > If you can't afford to feed your MB good fuel, you should be driving a > Toyota or Honda. > > Mathieu > www.oldworldauto.com
Mathieu- My point to the original poster was that I didn't think the M103 had knock sensors so don't rely on a component that isn't there to save your bacon. My car did get 87, once. It was the only option at one point after hurricane this or that ~ 2 years ago. I know my motor started at ~ 9.2:1 and has probably had the head shaved so is a bit higher than that. That coupled with no knock sensor and a dislike for even 89 octane has taught me all I need to know. SHould take a look at your site but I've also seen pistons pockmarked from preignition- thankfully, not in my car. Tony Wirtel -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20081230/f4f69202/attachment.html> _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
