Fly cutting Pistons - Competition Diesel.Com

DieseLife · 08-14-2017, 08:24 PM

Is it ok to cut just the exhaust side? All the aftermarket pistons I see look cut on the intake and exhaust side. Just trying to figure out why they would do that since there's no intake valve clearance problems on say a 194/220 in a commonrail.

Sanger · 08-15-2017, 09:10 AM

I would do both just to keep it balance.

9724VF350 · 08-15-2017, 10:06 AM

I'd just do the exhaust if that's all you need. Keep the compression up as much as possible. That'll be about 3 grams at .030 deep.

223 · 08-15-2017, 02:08 PM

ive seen lots of gas pistons only fly cut for one of the two valves

*EricStaab* · 08-17-2017, 10:45 AM

It seems odd your exhaust is closer than your intake. Unless the cam Intake center line is around 103 or more.

08-14-2017, 08:24 PM	#1
DieseLife Name: DieseLife Title: Diesel Enthusiast Status: Not Here Join Date: Jun 2013 Member`s Gallery Posts: 118	Fly cutting Pistons Is it ok to cut just the exhaust side? All the aftermarket pistons I see look cut on the intake and exhaust side. Just trying to figure out why they would do that since there's no intake valve clearance problems on say a 194/220 in a commonrail. __________________ 2003 4x4 QCSB- White-'Dual Cp3 w/Wicked CP3, BMS 100hp, 62/475 Twins, Hamilton P&P Head O'Ringed w/ Springs and Pushrods, Built Suncoast Trans, Walbro Fuel System, HTT I/C, BTR 3 Core, and UDC by Gecovey_@_Coffman_Customs

08-15-2017, 10:06 AM	#3
9724VF350 Name: 9724VF350 Title: Tractor Guy Status: Not Here Join Date: Mar 2010 Location: Northeast Ohio Member`s Gallery Posts: 2,784	I'd just do the exhaust if that's all you need. Keep the compression up as much as possible. That'll be about 3 grams at .030 deep. __________________ 97 F350 4X4 CC Dually 5spd 24V 913 S300/HT3B Ranch Hand. Playtoy-Oliver 1655. 12V now, 13mm, S475 Wife's ride-03 Excursion 12V swap in the works.

08-17-2017, 10:45 AM	#5
EricStaab Name: EricStaab Title: Sponsor Status: Not Here Join Date: Sep 2012 Location: WI Member`s Gallery Posts: 255	It seems odd your exhaust is closer than your intake. Unless the cam Intake center line is around 103 or more. __________________ No Limt MFG, Manufacturer of diesel performance engine parts: Billet camshafts, rods, valvetrain components, cylinder heads. We take on the hard and unusual jobs no one else is willing to do. Website: NoLimitMfG Facebook: Nolimitmfg Phone:715-384-4422

08-15-2017, 09:10 AM	#2
Sanger Name: Sanger Title: Too Much Time Status: Not Here Join Date: Dec 2010 Member`s Gallery Posts: 351	I would do both just to keep it balance.

08-15-2017, 02:08 PM	#4
223 Name: 223 Title: Green Behind the Ears Status: Not Here Join Date: Oct 2015 Member`s Gallery Posts: 79	ive seen lots of gas pistons only fly cut for one of the two valves