.020 over on a 5.9 for 1000hp+ - Page 2 - Competition Diesel.Com

cityredneck · 12-06-2013, 12:53 PM

No issues with going .020 over on bore. Just like you said earlier its only .010 on each side. Plenty of meat still left. As far as pistons, I trust stock 03/04 pistons with even just the crowns coated. Definitely helps soak up the heat and keeps from cracking

Cummins12Club · 12-08-2013, 12:04 PM

I drilled a hole in a junk standard bore block I have at work. The oil cooler was removed and I drilled a hole through the number 2 cylinder, it was a stock bore and measured about a 1/4 inch of wall thickness, just throwing that out there.

kawi600 · 12-10-2013, 02:26 PM

The DLC coating on the skirts might be cheap insurance to keep the piston from scuffing the cylinder when it soaks up all that heat real fast.
The ceramic heat reflecting coating on the piston crowns does work, but its not a huge improvement. I have run both on gas bike motors that were used for high speed hooliganism, lol. These pistons have an ultra-short skirt often with oversquare bore/stroke. I think even the mfr's are using DLC to improve piston life.

12-06-2013, 12:53 PM	#21
cityredneck Name: cityredneck Title: Diesel Mechanic Status: Not Here Join Date: Sep 2009 Location: Blairsville, PA Member`s Gallery Posts: 393	No issues with going .020 over on bore. Just like you said earlier its only .010 on each side. Plenty of meat still left. As far as pistons, I trust stock 03/04 pistons with even just the crowns coated. Definitely helps soak up the heat and keeps from cracking __________________ 05 Purple CCSB 5.9 Fastest to date 10.11 @ 137 HP Tuning by Gordon @ Innovative Exergy 150%, Industrial dual CP3's, Garrett GT4509R. Manual VB, Some nitrous and other goodies

12-08-2013, 12:04 PM	#22
Cummins12Club Name: Cummins12Club Title: Happy Dinosaur Status: Not Here Join Date: Jan 2013 Location: Too Far From the Action Member`s Gallery Posts: 979	I drilled a hole in a junk standard bore block I have at work. The oil cooler was removed and I drilled a hole through the number 2 cylinder, it was a stock bore and measured about a 1/4 inch of wall thickness, just throwing that out there. __________________ 93 Dodge, going racing. Special Thanks to Tim Wright & Pro Street Diesel

12-10-2013, 02:26 PM	#23
kawi600 Name: kawi600 Title: got Coal for Christmas Status: Not Here Join Date: Jun 2008 Location: communist urban hell Member`s Gallery Posts: 861	The DLC coating on the skirts might be cheap insurance to keep the piston from scuffing the cylinder when it soaks up all that heat real fast. The ceramic heat reflecting coating on the piston crowns does work, but its not a huge improvement. I have run both on gas bike motors that were used for high speed hooliganism, lol. These pistons have an ultra-short skirt often with oversquare bore/stroke. I think even the mfr's are using DLC to improve piston life. __________________ Psalm 144 Psalm 37:10,11 Isaiah 65:20