1985 Monte Carlo SS known as Barney

[SSLance]

OMG Todd, I had forgotten all about that incident.

You very well may be onto something there.

[Vegas69]

It appears it got wicked lean too.

[SSLance]

Originally Posted by Vegas69

It appears it got wicked lean too.

Yes it did, but keep in mind that the zoom in on the chart represents just a little over 1 second. That said, it was still a brutal hit on the internals for sure.

And me... Can't believe I forgot about that until you brought it up.

[mfain]

Originally Posted by Vegas69

It appears it got wicked lean too.

That is what I was concerned about. Lean leads to detonation which is very hard on cast pistons. Melted pistons, cracked wrist pin bosses, and broken ring lands are common indicators.

Pappy

Edit: Lance, is your ECU's rev limiter ignition or fuel based? If it is fuel based (cuts the fuel), some builders recommend adding an MSD spark rev limiter set just below the ECU limit to avoid a lean condition when the engine is on the limiter.

[SSLance]

Pappy, the ECU is set to pull spark at 6200 and when it hits 6400 it pulls spark and fuel.

[mfain]

Originally Posted by SSLance

Pappy, the ECU is set to pull spark at 6200 and when it hits 6400 it pulls spark and fuel.

That should be about perfect.

Pappy

[SSLance]

It has now been 48 days since I hurt the engine in Barney taking it off the road.

I typically try to not take it off the road for longer than 3 weeks at any one time. Careful planning and working fast helps me get the car back on the road ready to enjoy quickly. The EFI swap took about 7 weeks which was longer than normal, but it was a HUGE job.

I have to say, it is really starting to bug me that I haven't even decided on a path to repair yet, much less actually started buying parts and getting things done. This will be the longest this car has been down since I first restored the underside of it back in 2008. I said there would be no hurry as race season was basically done for me anyway, then this whole Covid-19 deal happened...but I'm ready to get it moving forward soon I hope.

I've met a local machinist that is working on some pricing for me. Soon then after I'll be making some final decision on which path to take.

Meanwhile...I'll keep working on the Jeep.

Stay safe everyone...

[SSLance]

Progress?