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EAGLE SIR6123CB RODS #2703653
10/04/19 01:40 AM
10/04/19 01:40 AM
Joined: Oct 2008
Posts: 1,176
East Coast
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A/MP Offline OP
super stock
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Joined: Oct 2008
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East Coast
Supposedly the Eagle cranks and rods have slipped in quality. Everything that I bought was from the 90's and never had any problems. Need a lighter rod for a 318 motor that will be built soon with a goal of 400-450 HP with a rev limit of 6400 rpms. Will these rods fit my needs? I do have a strict $ amount. All other parts are on the shelf and ready for the machine shop.

Re: EAGLE SIR6123CB RODS [Re: A/MP] #2703675
10/04/19 02:57 AM
10/04/19 02:57 AM
Joined: Jan 2003
Posts: 6,135
Melbourne , Australia
LA360 Offline
master
LA360  Offline
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Joined: Jan 2003
Posts: 6,135
Melbourne , Australia
There was an instance for the Car Craft guy, one of his rods shattered. I have Scat I beams, they were similar money and were 4340


Alan Jones
Re: EAGLE SIR6123CB RODS [Re: A/MP] #2703732
10/04/19 09:43 AM
10/04/19 09:43 AM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline
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mopar dave  Offline
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Posts: 8,031
Mt Morris Michigan
Those rods have the reputation on breaking caps off. I would look at Scat on a tight budget. They have some very light I beams. Not sure if Molnar has anything light, but he has really nice stuff.

Re: EAGLE SIR6123CB RODS [Re: mopar dave] #2703802
10/04/19 12:49 PM
10/04/19 12:49 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
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70AARcuda  Offline
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Posts: 9,826
las vegas
Scat 4340 I beams usually come in around 590 grams plus or minus...


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: EAGLE SIR6123CB RODS [Re: A/MP] #2706898
10/15/19 01:45 AM
10/15/19 01:45 AM
Joined: Jun 2016
Posts: 170
Wisconsin
M
Medlock51 Offline
member
Medlock51  Offline
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Joined: Jun 2016
Posts: 170
Wisconsin
I have three shops that have done machine work for me in the past several years. None like to work with Eagle stuff...poor quality control, poor reliabilty in those Sr rods, etc.

Re: EAGLE SIR6123CB RODS [Re: Medlock51] #2706965
10/15/19 11:43 AM
10/15/19 11:43 AM
Joined: Oct 2006
Posts: 7,363
Iowa
burdar Offline
Owen's Dad
burdar  Offline
Owen's Dad

Joined: Oct 2006
Posts: 7,363
Iowa
I have VERY limited engine building knowledge so I'm hesitant to even post in this section. That being said, last year I stopped by the local machine shop and saw a brand new Eagle rod in the junk bin. I asked about it and they said they were torquing the cap and the threads pulled out of the rod. Needless to say, I didn't get the best first impression.

Re: EAGLE SIR6123CB RODS [Re: A/MP] #2707106
10/15/19 08:58 PM
10/15/19 08:58 PM
Joined: May 2003
Posts: 13,185
aZLiViN
J
J_BODY Offline
I Live Here
J_BODY  Offline
I Live Here
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Joined: May 2003
Posts: 13,185
aZLiViN
Check out Molnar rods.... the ones in my W8 mill are tiny compared to the eagle that we ran with our W5 build.

Re: EAGLE SIR6123CB RODS [Re: A/MP] #2707140
10/16/19 12:01 AM
10/16/19 12:01 AM
Joined: Feb 2016
Posts: 199
PA
S
Scully Offline
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Scully  Offline
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Joined: Feb 2016
Posts: 199
PA
Stock rods will handle that.

Re: EAGLE SIR6123CB RODS [Re: Scully] #2707192
10/16/19 08:39 AM
10/16/19 08:39 AM
Joined: Oct 2008
Posts: 1,176
East Coast
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A/MP Offline OP
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Posts: 1,176
East Coast
I've done stock rods before. By the time your done with the machine shop fees of mag, resize, bush, peen and good rod bolts, you have an old rod with a bill that's approaching new. Plus a lighter rod(depending on brand and model) is a help in getting to the power band faster. We are also talking about 40+ year old parts with thousands of cycles to live in a performance environment.







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