MSD rev limit tech question., Bill Pickering? Options

[Trekkor]

Got the odd increment pack.
The mechanical rev limiting rotor was a 7300 unit.
I replaced it with a standard Bosch rotor.
I've been running on the provided 7k MSD pill.

I guess my question is, how high can I safely rev my SIX at the a/x for short blasts?


KT

[nine14cats]

Hey Trekkor,

With my 2.7 I used the 7500 RPM pill the first season then ended up buying the 100 RPM selector switch for it. I would run 7200 RPM as a safe zone then dial it up to 7400 or 7500 depending upon the course if I wanted extra revs.

As us know my 2.7 wasn't stock (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif) so the goodies inside let it rev to 7500 pretty safely. I ended up moving it down to 7200 the second year for engine life. I wanted to get 3 total years out of the motor before a tear down and everything was going to plan until I missed that shift at Buttonwillow... (IMG:http://www.914world.com/bbs2/html/emoticons/ar15.gif)

I believe your 2.2 is not stock and will rev to the moon like mine did. I'm looking at my Porsche engine book and I see peak HP is:

125HP @ 5800 RPM
155HP @ 6200 RPM
180HP @ 6500 RPM

Peak torque is somewhere between 4200 to 5200 RPM. These are all stock numbers.

If memory serves the 2.2's and 2.4's had redlines at 7200 or 7300 RPM.... (IMG:http://www.914world.com/bbs2/html/emoticons/blink.gif)

I think....

Hey JP, weren't you runnin' your 2.7 with a 7300 pill?

I hope that helps you get started....

Bill P.