New guy go easy on me - Page 6 - Competition Diesel.Com

BigErk77 · 02-03-2010, 02:08 PM

I thought that was with a stock harmonic balancer @4300 rpms. I would hope anyone running into the 4k range has a fliudamper. You dont even need to run 5k rpms.

JTaylor · 02-03-2010, 03:05 PM

Quote:

Originally Posted by Forrest Nearing

lol, actually, the old TDR rumor was 4200rpm!

that used to drive me nuts

Destructive torsional harmonic resonance occurs at 4100 RPM. Crank and rods fail at 5400 RPM. Another one was that a Street Truck should never go higher than 16.5* Timing, and Automatics should be around 14.5-15* Timing. And VE pumps are limited to 300 rwhp. Trust me I've heard it all! The Kingpin lived down the Street from me.

oldestof11 · 02-03-2010, 07:45 PM

I am so glad we have compD then. I have been REALLY misinformed....

02-03-2010, 02:08 PM	#101
BigErk77 Name: BigErk77 Title: Too Much Time Status: Not Here Join Date: Sep 2009 Location: Baltimore MD Member`s Gallery Posts: 946	I thought that was with a stock harmonic balancer @4300 rpms. I would hope anyone running into the 4k range has a fliudamper. You dont even need to run 5k rpms. __________________ 2014 Dodge 1500 Ecodiesel

02-03-2010, 07:45 PM	#103
oldestof11 Name: oldestof11 Title: Drag racer Status: Not Here Join Date: Jul 2007 Location: Dixon, IL Member`s Gallery Posts: 9,084	I am so glad we have compD then. I have been REALLY misinformed.... __________________ Jon