Comments on: Automotive Connecting Rods 101

By: firefox8192

firefox8192 — Tue, 09 Feb 2010 21:47:14 +0000

does polishing and …
does polishing and ballancing forged rods help any. please advise

By: crxlover83

crxlover83 — Tue, 09 Feb 2010 21:47:14 +0000

wrong. they are …
wrong. they are forged I beam rods

By: humantestdummy

humantestdummy — Tue, 09 Feb 2010 21:47:14 +0000

forged h
forged h

By: bastec666

bastec666 — Tue, 09 Feb 2010 21:47:13 +0000

billet is always …
billet is always best IMHO because its a solid piece instead of 2 pieces put together or hot liquid metal pored into a mold. billet is always better.

By: originaldriver

originaldriver — Tue, 09 Feb 2010 21:47:13 +0000

Yup….

Shot …
Yup….

Shot peening and better rod bolts will increase fatigue limits as well.

Remember,.. the rod is stressed the most at “TDC” during the exhaust stroke. Its literally being stretched.

By: originaldriver

originaldriver — Tue, 09 Feb 2010 21:47:13 +0000

stroke has more to …
stroke has more to do with rpm tolerance than rod designbecause stroke determines the piston speed at TDC.

The connecting rod is under the most stress when the when the piston is halted at TDC after traveling to the top of the bore.

This sudden “halt” at TDC generates tremendous forces on the rod and the rod bolts.

Most well-built street performance engines will perform safely at 4000 ft/sec of piston speed.

Use this formula…

max rpm = (max piston speed X 6) / stroke

By: ITRlover1

ITRlover1 — Tue, 09 Feb 2010 21:47:13 +0000

All those rods have …
All those rods have such a low RPM tolerrance? I rev my Integra type R to 9500 on stock rods with no problems

By: fiatnutz

fiatnutz — Tue, 09 Feb 2010 21:47:13 +0000

Balancing is …
Balancing is necessary, polishing doesn’t hurt either.

By: Joe11Blue

Joe11Blue — Tue, 09 Feb 2010 21:47:12 +0000

Yes, and you still …
Yes, and you still drive an overpriced slow econobox.

By: RexB

RexB — Tue, 09 Feb 2010 21:47:12 +0000

That was awesome! I …
That was awesome! I love learning about engines!