Full Floating pins in Stock?

VStock · 07-30-2012, 03:08 PM

Are Full Floating Wrist Pins allowed in NHRA Stock Class? I read the rules, but it wasn't clear to me. If they ARE allowed, is there any advantage?

Alan Roehrich · 07-30-2012, 03:46 PM

Yes, they are allowed.

Ease of assembly and disassembly. Do not build a race engine without full floating pins unless the rods and pistons, unless the parts are not available and cannot be made. The first time you or your engine builder damages a rod and or piston pressing them apart, you'll wish you had full floating pins.

By the way, round wire locks are the way to retain pins. Superior even to double spirolocks.

07-30-2012, 03:08 PM	#1
VStock Junior Member Join Date: Jul 2012 Location: Freeland, Michigan Posts: 19 Likes: 0 Liked 0 Times in 0 Posts	Full Floating pins in Stock? Are Full Floating Wrist Pins allowed in NHRA Stock Class? I read the rules, but it wasn't clear to me. If they ARE allowed, is there any advantage? __________________ Marty Knox

07-30-2012, 03:46 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,105 Likes: 1,564 Liked 1,789 Times in 408 Posts	Re: Full Floating pins in Stock? Yes, they are allowed. Ease of assembly and disassembly. Do not build a race engine without full floating pins unless the rods and pistons, unless the parts are not available and cannot be made. The first time you or your engine builder damages a rod and or piston pressing them apart, you'll wish you had full floating pins. By the way, round wire locks are the way to retain pins. Superior even to double spirolocks. __________________ Alan Roehrich 212A G/S