What happened? Whats your theory?

[SHOFire]

I second the hard driving is good for an engine. I end up having to drive my mom's 95 Delta 88 grannymobile, and that thing has never seen above 3k rpms(redlines at approx 5500). This engine has almost 300k on it, and it feels tired and sluggish. So, as soon as coolant temp starts hitting the 60 degree mark, I enjoy moving the selector down a gear, and flooring it. I end up driving the car fairly hard for the next hour or so. After this, the car seems a lot more eager, and pulls away from stops with authority. It was probably the shortest time that car has gone through half a tank though. I've done this a few times now, and the car definetley feels a lot better.

 

[SuperHO]

wow...my car should be running at it's peak right now, since it bounces the rev limiter at least 7 times a day at WOT....I probably have the cleanest motor in existence..

 

[whiteman_01]

LOL, mine should be also.

 

[SHOFire]

not necessarily, lol

There are a LOT of factors that make an engine run like it does. Some things work, some things don't. Mind you, driving these cars hard ALL the time puts more wear on the engine. But these engines enjoy being driven hard, so that ALMOST doesn't apply to SHOs. In my case, the granny mobile isn't exactly a performance machine, and probably won't like being driven hard all the time, especially at 300k. You risk damaging rings when the connecting rods stretch enough so that the rings contact the ridge that has been formed at the top of the cylinder. And something else may break because if has never spun that fast before. But WOT once in a while does wonders to clear out a lightly driven engine.

 

[SonicRiot]

I'm an advocate of giving all cars a solid flogging and to **** with the consequences. Drive it like ya stole it!

 

[yamapowered]

allowing the oil temp to rise and reach max temps, reduces friction because finally the cold crude oil can coat the whole engine. long running durations is much better on sump oil than short trips. :corn: