Lightest LS1 replacement Rod
TECH Fanatic
Joined: Nov 2001
Posts: 1,248
Likes: 0
From: Kansas City, MO
Originally Posted by DynamicZ28
what are the weights of the eagle and lunati pieces..I don't necessarily need an exotic billet rod. this isn't going to be a high horsepower app. just need a light rotating assembly
The problem is you're using the word "light". Light does not equal inexpensive.
If you truly want a light rotating assembly, you're going to have to pay for it in either bulk parts or high end machining.
Manley sportsman I beams, 6.1' are 592gm, 6.125's are 595gm, a little lighter than stock, which is supposed to be around 608gm. They are not rated for very much hp though, I think 500hp/8000rpm. Crower sportsman I beams are 625-640gm.
Affordable Lightweight Rods TRYING TO FIND THOSE QUALITIES (light & inexpensive) IS A REALLY TOUGH SEARCH.I WANTED A LIGHT WEIGHT ROTATING ASSEMBLY SO I COULD SAFELY REV TO 7500 .CHECK OUT PROBE INDUSTRIES LIGHTWEIGHT I BEAM. I KNOW THEY MOSTLY MAKE FORD PARTS BUT THEY HAVE A ROD THAT APPEARS BETTER THAN MOST OF THE LOW DOLLAR JUNK THAT'S OUT THERE .I WOULD TALK TO SOME FORD GUYS (i'm losing iq points) AND SEE HOW IT'S WORKED FOR THEM.THEY MAVE A LIGHTWEIGHT 4340 IN 6.125 & 6.200 WEIGHING IN 600-625gm AND THEY HAVE AN ULTRALIGHT ROD IN 6.125 THAT IS 550gm.THESE ARE JUST STANDARD SBC RODS AND I KNOW THE FORD GUYS WILL USE SBC RODS DUE TO THEIR AFFORDABILITY.
TECH Apprentice
Joined: Jan 2002
Posts: 320
Likes: 5
From: Nottingham, Notts, England, UK
Originally Posted by Cstraub
Lentz or Carrilo can get in the 500 to 520 gram weight. The Jager rod, transformed aluminum is around 430gms.
Chris
Chris
Originally Posted by Cstraub
You don't want to run Ti on a street engine. The negative about the rod is it is so ridged. You must have some about of energy abosorbtion with rod material so that "cushions" the power stroke energy and does not transfer all of it to the crank. Ti is run in the top classes but the rods are cycled as with anything. They are hard on bearings and need to be in an dry sump applicaton only.
Chris
Chris
Which "top classes" cycle Ti rods out? Fuel cars use AL and they are checked and replaced when needed.
Personally I would worry much more about running AL rods than Ti rods in a street application.
The biggest problem with Ti rods (aside from cost) is severe notch sensitivity. Even small scratches on the surface of a Ti rod can cause failure. Extreme care should be used during assembly.
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Mike,
The Lentz and Carrillo stuff is steel, material I am not sure of. Those weights are average for the 6.280 to 6.450" stuff run in Cup. I Beam rod. The Jager rod starts with a Kaiser certified 7075 material. Rod features a patented splayed rod bolt with radial serrations to locate cap.
Leragie,
Top sportsman, some pro mod, and several Pro Stockers on the Ti-stuff. Carrol Carter is one, owns C&C, the block mfg. builds several engines using the Ti stuff and cycles it out. I am not familar with Hondas NSX project and the use of Ti so I won't comment. The other I am familar with.
Chris
The Lentz and Carrillo stuff is steel, material I am not sure of. Those weights are average for the 6.280 to 6.450" stuff run in Cup. I Beam rod. The Jager rod starts with a Kaiser certified 7075 material. Rod features a patented splayed rod bolt with radial serrations to locate cap.
Leragie,
Top sportsman, some pro mod, and several Pro Stockers on the Ti-stuff. Carrol Carter is one, owns C&C, the block mfg. builds several engines using the Ti stuff and cycles it out. I am not familar with Hondas NSX project and the use of Ti so I won't comment. The other I am familar with.
Chris
Originally Posted by Cstraub
Mike,
Leragie,
Top sportsman, some pro mod, and several Pro Stockers on the Ti-stuff. it out. I am not familar with Hondas NSX project and the use of Ti so I won't comment. Carrol Carter is one, owns C&C, the block mfg. builds several engines using the Ti stuff and cycles The other I am familar with.
Chris
Leragie,
Top sportsman, some pro mod, and several Pro Stockers on the Ti-stuff. it out. I am not familar with Hondas NSX project and the use of Ti so I won't comment. Carrol Carter is one, owns C&C, the block mfg. builds several engines using the Ti stuff and cycles The other I am familar with.
Chris
I know one of the reasons the Top Fuelers use AL rods because they help absorb shock caused by the violent combustion events.
The Honda NSX is sold as an Acura here in the U.S.A It's their $90,000 "sports car".The car runs a V-6 that redlines at 8k.
NSX Specs from Acura website
It's Honda's "halo" car and a test bed for technology much like the Corvette is for GM.
Thread Starter
Staging Lane
Joined: Dec 2003
Posts: 54
Likes: 0
From: Bettendorf, IA
I found lightweight rods from Eagle
.550 grams and affordable
http://www.eaglerod.com/products/Che...S1%20rods.html
.550 grams and affordable
http://www.eaglerod.com/products/Che...S1%20rods.html
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
The Jaeger rod looks most promising.
Also, some of the Ferrari's (360 Modena for instance) are running Ti rods, hence the 8500RPM redline. There are some Ti applications in the drag racing front, as stated, not in Fuel, as I have a set of T/F rods and pistons sitting on the shelf in my shop right now. The Ti stuff I have seen has been in the Comp Eliminator type classes. I know of a couple of local racers who had done some experimentation with a lot of Ti parts including allegedly a Ti crank for an SBC chevy, although I never saw it in person and I don't know how it worked.
Also, some of the Ferrari's (360 Modena for instance) are running Ti rods, hence the 8500RPM redline. There are some Ti applications in the drag racing front, as stated, not in Fuel, as I have a set of T/F rods and pistons sitting on the shelf in my shop right now. The Ti stuff I have seen has been in the Comp Eliminator type classes. I know of a couple of local racers who had done some experimentation with a lot of Ti parts including allegedly a Ti crank for an SBC chevy, although I never saw it in person and I don't know how it worked.
Jager will be the way to go. I am going with a set of his aluminum in by BBC in my 23 ft boat. Building a 496. I here Cat and Cummins have contacted him.
I'd say the Europeans and the Japanese are getting away with Ti because the weight of the piston rod assembly is very light to start with. We most of the pans for the top NA engine builders for several motorsports and most are Alum. in drag and steel in circle.
Chris
I'd say the Europeans and the Japanese are getting away with Ti because the weight of the piston rod assembly is very light to start with. We most of the pans for the top NA engine builders for several motorsports and most are Alum. in drag and steel in circle.
Chris
look up Jager connecting rods on a search engine, sorry, anyway there were references to aluminum rods being tested for endurance, but nothing on Jager.
Last edited by CAT3; Mar 30, 2004 at 07:45 PM.
