PTV clearance and piston notching

Mr.Slave · 05-19-2008, 06:53 PM

Moving forward with my barrage of questions, I have 2 more.

1: I have a hydraulic lifter with a flipped plunger to test PTV clearance with. Someone on another forum told me that it will be .030 on the high side as compared to a solid lifter. I just want to double check this, is that true?

2: I'm fairly certain even before I check PTV that I'm probably going to need to notch my pistons. When I do this, do I have to take the pistons back out afterward to clean everything? I'm just worried about shavings getting inbetween the pistons and the walls, is this a possibility? I've even thought about turning the engine upsidedown on the stand while notching to prevent this but maybe I'm worrying for nothing.

05-19-2008, 06:53 PM	#1
Mr.Slave Member Join Date: Apr 2007 Location: Lockport N.Y. Posts: 37	PTV clearance and piston notching Moving forward with my barrage of questions, I have 2 more. 1: I have a hydraulic lifter with a flipped plunger to test PTV clearance with. Someone on another forum told me that it will be .030 on the high side as compared to a solid lifter. I just want to double check this, is that true? 2: I'm fairly certain even before I check PTV that I'm probably going to need to notch my pistons. When I do this, do I have to take the pistons back out afterward to clean everything? I'm just worried about shavings getting inbetween the pistons and the walls, is this a possibility? I've even thought about turning the engine upsidedown on the stand while notching to prevent this but maybe I'm worrying for nothing. __________________ 306 stock block, balanced forged internals, main girdle, cam motion custom grind, Twisted Wedge heads, GT-40 intake with port matched lower, 24# injectors, Big Shot plate kit, equal length shortys, o/r x-pipe, CAI, electric fan, A/C and smog delete, all the supporting mods.