Sea01Cummer

I robbed it from some guy, want it back?


Steve

2500CTD

Nah i got my own!!

Got the idea from here: Disturbed If I could only get the eyes to do that in my avatar.....

CTD NUT

This picture is a good indication of just why a very high powered and high revving CTD can benefit from billet aluminum rods - just look at the sheer mass of them.....the reciprocating mass on a CTD is VERY high.....loading of the crankshaft can increase exponentially with rpm.....anything that can be done to lower the reciprocating mass can greatly help the bottom end stay together at very rpm and hp. Of course, these rods are not at all applicable to a street driven CTD but rather they are intended for those who are pushing the power and rpm limits of these engines.

Don M

That ally rod will fail. Skip the Voo Doo stuff.


Don~

Rare1

"That ally rod will fail. Skip the Voo Doo stuff." Don M

Thanks, that's what I was thinking. Cummins says we need these monster rods in a std engine. If we are "pushing the power and rpm limits of these engines" why would you use something weaker?

"help the bottom end stay together" A 175 lb crankshaft doesn't need any help.

Sea01Cummer

The part i like is compared to the competition , our rods are over biult by looking at the powerjoke rods that are small to start with. Did i mention i love my truck and getting rid of the powerjoke was the best idea i have had in a very , very long time. Merry X-Mas everyone!!!!!!


Steve

joefarmer

FWIW, the Cummins B-series crank I shipped weighed ~85lbs. It wasn't that heavy, just awkward.

brnadon.

A.K.APARTSMAN

nice paper weight,,, not worth 1600 buckers

Rhino

I don't need them because I would not give that guy a dollar He is not an honest businessman.

Rare1

OOPS. My source (obviously unreliable) told me it was 175 pounds. Sorry to mislead everyone and publish a false statement.

Boatnik

I think you guys are missing the point about those rods.............They would make lovely book ends and table lamps.

joefarmer

That's quite alright, for all I know my stock crank was lightened from the factory or something strange. I found another post on TDR that claimed 150lbs- I doubt that many peope have even weighed it so they just guess?

brandon.

signature600

I now know what a head and block weighs... A little rough on the back though

If anyone changed the rods in an engine, I think the new CR Cracked Cap design would be worth swapping in, and it's a factory Cummins part

Chris

Mike Holmen

Most people buy aluminum rods for high rpm applications. Its to reduce the rotating mass. Saving amost 2lbs per rod is alot of weight. Multiply that by 6, do the centrifugal weight calculation, your probably reducing a ton of weight. Your engine would accerate faster. Mate these rods to some light weight pistons you would have a fast reving engine that would be only good for a few passes before you would have to pull the bottom end to see if the rods have stretched. I saw Piers putting together a race car with a 12v. You should have seen the size of the primary turbo, it was about twice the of the 3b turbo. If Piers is doing this I'm sure there is other fellas doing the same. You would probably have a car that could run low 9's, with little or no maintaince for an entire season. To bad you can't buy a aluminum block and head. That would make for an interesting hot rod motor for your challenger or cuda.