Lapping piston rings

JHeath · 01-16-2016, 09:53 PM

I was sorting thru old Car Craft magazines and I found an article from 1974 about Herman Chapman and a tool he built for lapping rings, using comet cleanser, and a piece of glass , does anyone still do this ?, or do todays rings not need this ?

Dyno · 01-17-2016, 12:47 AM

Today, you just pay Total Seal $100.00 each for them to do it. The old way sounds much cheaper.

GTOMayhem · 01-17-2016, 07:55 AM

Any chance of scanning and posting the article? If not, what issue is it in? The old school tricks for stock eliminator are fascinating.

Rick Thomason
GTOMayhem

JHeath · 01-17-2016, 11:26 AM

Quote:

Originally Posted by GTOMayhem

Any chance of scanning and posting the article? If not, what issue is it in? The old school tricks for stock eliminator are fascinating.

Rick Thomason
GTOMayhem

Car Craft November 1974, I will try to scan it

Greg Reimer 7376 · 01-17-2016, 12:36 PM

It seems amazing that 30 years ago, what we had to run to remain legal in Stock Eliminator even worked at all. Those were the days when a run just under the index was something to be proud of. The constant evolution of the sport has been constant,relentless,and outstanding. One of the sure things, there are no more car magazine articles that feature this stuff like there once were. There was a tremendous amount of learning to be had from those years. I got belittled once that"Reimer doesn't know anything but what he reads in car mags". I thought that was a complement. Obviously, that detractor never read many magazines, or he'd know something too.
The evolution of Stock Eliminator into what it is now isn't just motors, but tires,wheels, chassis tweaking,converters,transes, all in all, the cars just aren't the same.I don't know how a new racer could ever do this if it wasn't for the vast herd of experienced racers out there that have a vast pool of useful knowledge. Believe us, it doesn't come easy.

Eman · 01-17-2016, 01:37 PM

I remember reading that Chevrolet used cleanser as a field fix for seating rings on the early V-8's.

As far as the just pay someone to do it and the lack of tech articles it's the same in bracket racing. Few if any do the work to their cars. I'm constantly amazed at the people that race that do no work at all on their cars.

Larry Hill · 01-17-2016, 02:53 PM

Good article on Scott's B/SA car, man is that thing fast. Does anyone know what rod bearing to order that is for a crank pin of 2.200'' with a Pontiac rod housing bore of 2.375'' ? I got a neighbor that would love to save his OEM crank.

FSA1673 · 01-17-2016, 07:58 PM

Quote:

Originally Posted by Larry Hill

Good article on Scott's B/SA car, man is that thing fast. Does anyone know what rod bearing to order that is for a crank pin of 2.200'' with a Pontiac rod housing bore of 2.375'' ? I got a neighbor that would love to save his OEM crank.

He is using a BBC rod, not a stock Pontiac rod. It is NHRA approved for a Pontiac Stocker.

nolongerracing · 01-17-2016, 08:30 PM

The same bearing that the big block Chryslers are using. Your new 6.1 will use the small block chevy bearing. Moma mopar already took care of that for you.

Quote:

Originally Posted by Larry Hill

Good article on Scott's B/SA car, man is that thing fast. Does anyone know what rod bearing to order that is for a crank pin of 2.200'' with a Pontiac rod housing bore of 2.375'' ? I got a neighbor that would love to save his OEM crank.

Jeff Stout · 01-17-2016, 02:56 PM

So this should still be done if ring manufacture doesn't?

01-16-2016, 09:53 PM	#1
JHeath Senior Member Join Date: Jul 2004 Location: Minneapolis Posts: 786 Likes: 2,876 Liked 370 Times in 101 Posts	Lapping piston rings I was sorting thru old Car Craft magazines and I found an article from 1974 about Herman Chapman and a tool he built for lapping rings, using comet cleanser, and a piece of glass , does anyone still do this ?, or do todays rings not need this ? __________________ Jerry Heath I/S '93 Cobra FS/J 2010 Mustang "Ebay CJ"

01-17-2016, 12:47 AM	#2
Dyno Senior Member Join Date: Dec 2002 Posts: 905 Likes: 1,098 Liked 659 Times in 196 Posts	Re: Lapping piston rings Today, you just pay Total Seal $100.00 each for them to do it. The old way sounds much cheaper.

01-17-2016, 07:55 AM	#3
GTOMayhem Member Join Date: Oct 2014 Posts: 172 Likes: 671 Liked 22 Times in 14 Posts	Re: Lapping piston rings Any chance of scanning and posting the article? If not, what issue is it in? The old school tricks for stock eliminator are fascinating. Rick Thomason GTOMayhem

01-17-2016, 12:36 PM	#5
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,130 Likes: 172 Liked 698 Times in 216 Posts	Re: Lapping piston rings It seems amazing that 30 years ago, what we had to run to remain legal in Stock Eliminator even worked at all. Those were the days when a run just under the index was something to be proud of. The constant evolution of the sport has been constant,relentless,and outstanding. One of the sure things, there are no more car magazine articles that feature this stuff like there once were. There was a tremendous amount of learning to be had from those years. I got belittled once that"Reimer doesn't know anything but what he reads in car mags". I thought that was a complement. Obviously, that detractor never read many magazines, or he'd know something too. The evolution of Stock Eliminator into what it is now isn't just motors, but tires,wheels, chassis tweaking,converters,transes, all in all, the cars just aren't the same.I don't know how a new racer could ever do this if it wasn't for the vast herd of experienced racers out there that have a vast pool of useful knowledge. Believe us, it doesn't come easy.

01-17-2016, 01:37 PM	#6
Eman Member Join Date: May 2014 Location: E TN Posts: 463 Likes: 16 Liked 125 Times in 71 Posts	Re: Lapping piston rings I remember reading that Chevrolet used cleanser as a field fix for seating rings on the early V-8's. As far as the just pay someone to do it and the lack of tech articles it's the same in bracket racing. Few if any do the work to their cars. I'm constantly amazed at the people that race that do no work at all on their cars.

01-17-2016, 02:53 PM	#7
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,587 Likes: 1,871 Liked 10,589 Times in 2,189 Posts	Re: Lapping piston rings Good article on Scott's B/SA car, man is that thing fast. Does anyone know what rod bearing to order that is for a crank pin of 2.200'' with a Pontiac rod housing bore of 2.375'' ? I got a neighbor that would love to save his OEM crank. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

01-17-2016, 02:56 PM	#10
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,482 Likes: 63 Liked 702 Times in 280 Posts	Re: Lapping piston rings So this should still be done if ring manufacture doesn't?