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Old 12-20-2009, 06:34 PM   #1
modaddict
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OMGHi2U Connecting rod weight compilation thread

This thread was designed (obviously) to compile a list of connecting rod weights. Now, I don't have them all!!!!!

If you have a build sheet or are a Vendor that is willing to share the weight of your rod please do so!

Pauter:
2.5L pre 2000 DOHC
.905”
2.008”
5.180”
.840”
575g
SUB-230-510-1315F

2.0L
.905”
2.165”
5.135”
.840”
555g
SUB-230-550-1305F

2.2L
.905”
2.165”
5.135”
.840”
555g
SUB-230-550-1305F

2.5L 2000 and newer SOHC
.905”
2.165”
5.180”
.840”
585g
SUB-230-550-1315F



Manley H beam:
14024-4
Subaru EJ 18/20/22
5.137"
2.165"
.840"
.905" (23 mm)
.9063"
535g



Manley "turbo tuff" lol I-beam
14416-4
Subaru WRX EJ20/STi EJ25
5.141"
2.165"
0.840"
.905" (23 mm)
.9063"
613g




Eagle:
CRS5137S3D
5.137"
530g.
Subaru EJ18, EJ20, EJ22



Cosworth:
5.137"
130.5mm
524g
ej20/ej25



Tomeii H-beam
??
(04-07) Subaru STi EJ25-
130.5mm



K1 Technologies: (h-beam)
SH5137AJJB4 Subaru EJ20 5.137" 2.165" 23mm 3/8" 533g
SH5180AJJB4 Subaru EJ25 5.180" 2.165" 23mm 3/8" 547g



Carrillo:
EJ20, EJ22, EJ25(WRX & STI) 2ltr & STI 2.5
4 PRO-SA SB-2LTR<SA-65137H 3/8 WMC
5.137
131 0.845
21
0.844
21
2.165
55
23mm
517g



BigValley's website lists Carrillo's as the below specs:
http://www.bigvalleyperformance.com/...-2.0L-%26-2.5L
Rod Specifications:
- Bolt Size: 3/8"
- Length: 5.137" (130.50mm)
- Big End Bore: 2.165" (55.000mm)
- Pin Diameter: .9055" (23mm)
- Total Weight (in grams): WMC Bolt = 519, CARR Bolt = 524
- Rotating Weight (in grams): WMC Bolt = 368, CARR Bolt = 374
- Reciprocating Weight (in grams): WMC Bolt = 151, CARR Bolt = 150



OMI rods?
http://www.omi-performance.com/honda...nnecting-rods/
Subaru EJ20
part # description
OMI-CRH-S-EJ-10 We strongly recommend using ACL or OEM bearings for this application.
Length: 5.137" - Weight: ~542gram



Innovative Tuning/ Manley rods

http://www.innovativetuning.com/cata...oducts_id=2976
Specs:
Length: 5.137" (center to center at 68 degrees F)
Weight: 525 gramsAlloy: 4340
Fasteners: 3/8" ARP 2000 cap screws



Oliver:
http://www.oliverconnectingrods.com/...ds/TechSCS.pdf
5.137” Subaru Legacy LT EJ18, 20, 22 0.906 2.164 S5137LT
5.180” Subaru EJ25 LT 0.906 2.164 S5180LT
no weight listed on their website!



Scat:

EJ20 / EJ25 Specification
5.137"
130.5mm
Weight 524g



Element Tuning: (h-beam)
5.137"
520g


Crawford Performance: (h-beam) (also have I-beams)
as shown in post #17 below
510g



Stock STi rod:
as shown in post #13 below
589g



Brian Crower:
Engine ej20/ej25
C-to-C: 5.141"
B.E. Bore: 2.166"
B.E. Width: 0.843"
P.E. Bore: 0.905"
P.E. Width: 0.840"
Fastners: 3/8" ARP2000
H beam = 525g
I beam 535g




I'll keep working on this. This is what I whipped up real quick.

Vendors needed:
Maxwell power
3MI Racing
Axis
Stock rod weight double verification?


????


Please post your weights. They may be different than listed above. Please post other manufacturers too.
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Last edited by modaddict; 12-23-2009 at 02:53 PM.
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Old 12-20-2009, 07:35 PM   #2
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Nice looks like a cool compilation of info lets add to the list!
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Old 12-20-2009, 07:56 PM   #3
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Here are some weights I got from TWE a while back: "STi = 586.6g, EJ25 SOHC = 610.7g, Oliver = 544g (our personal favourite), Pauter = 604.8g." I have a set of the 544g Oliver rods, they're "normal" Phase II SOHC dimensions and I'm not sure they're made anymore. I got the impression from Tom @ TWE that they just had the one set, which I bought from them.

Interesting that the Pauter weight he quoted (for the Phase II SOHC application) is ~20g higher than what you've found.

Pat Olsen
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Old 12-20-2009, 07:58 PM   #4
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Quote:
Originally Posted by Patrick Olsen View Post
Here are some weights I got from TWE a while back: "STi = 586.6g, EJ25 SOHC = 610.7g, Oliver = 544g (our personal favourite), Pauter = 604.8g." I have a set of the 544g Oliver rods, they're "normal" Phase II SOHC dimensions and I'm not sure they're made anymore. I got the impression from Tom @ TWE that they just had the one set, which I bought from them.

Interesting that the Pauter weight he quoted (for the Phase II SOHC application) is ~20g higher than what you've found.

Pat Olsen
Well the internet is always right, 60% of the time.
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Old 12-20-2009, 08:14 PM   #5
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Well I have a set of Crawford's rods sitting in front of me. I haven't personally weighted them but the weights listed on them (each one has a weight written on with a sharpie) average to 510 grams. Not the greatest but as you stated the internet is correct 60% of the time. I will see if I can find a good scale and get some actual weights for you. I also don't know who makes the Crawford rods but I'm interested to find out. They list them as "long rods" but they are just the phase 1 ej25 NA rods which are 131.6mm.
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Old 12-20-2009, 08:49 PM   #6
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Quote:
Originally Posted by John__Gotti View Post
Well I have a set of Crawford's rods sitting in front of me. I haven't personally weighted them but the weights listed on them (each one has a weight written on with a sharpie) average to 510 grams. Not the greatest but as you stated the internet is correct 60% of the time. I will see if I can find a good scale and get some actual weights for you. I also don't know who makes the Crawford rods but I'm interested to find out. They list them as "long rods" but they are just the phase 1 ej25 NA rods which are 131.6mm.
Are they H beam or I beam?
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Old 12-20-2009, 08:51 PM   #7
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H beam
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Old 12-20-2009, 09:04 PM   #8
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Quote:
Originally Posted by John__Gotti View Post
H beam
A picture with the weight would be outstanding!
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Old 12-20-2009, 09:07 PM   #9
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I will see what I can do. Can definitely get you a picture but will see what I can do about getting them weighed tomorrow. Report back then.
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Old 12-20-2009, 09:44 PM   #10
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Good website that lists some connecting rod manufacturers:

http://www.strikeengine.com/connecting-rod.html
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Old 12-20-2009, 10:35 PM   #11
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I am currently building a 2.12 stroker using eagle rods. I also happen to have a set of eagle rods, stock STi rods, stock 02 WRX rods and a digital scale with a resolution to .1 grams lying around in my shop. If you want I can weigh all three for you on the same scale to give you an idea of the absolute and relative weights. I can also give you the the individual weights for the Eagle rods if you want so we can begin to rate the various brands on their consistency.
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Old 12-20-2009, 10:37 PM   #12
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Gruppe-s uses Helix H beam rods in their shortblock. I can not seem to find anymore info on them.

Anyone?
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Old 12-20-2009, 11:12 PM   #13
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OEM STi Rods - 589g

Manley H-Beam Rods on the same scale - 518g-520g
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Old 12-20-2009, 11:40 PM   #14
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Quote:
Originally Posted by MartinSTi05 View Post
I am currently building a 2.12 stroker using eagle rods. I also happen to have a set of eagle rods, stock STi rods, stock 02 WRX rods and a digital scale with a resolution to .1 grams lying around in my shop. If you want I can weigh all three for you on the same scale to give you an idea of the absolute and relative weights. I can also give you the the individual weights for the Eagle rods if you want so we can begin to rate the various brands on their consistency.
For sure please weigh them. Any information gathered is extremely helpful. I think most everyone realizes that rods will weight differently from rod to rod, batch to batch and scale to scale.
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Old 12-20-2009, 11:48 PM   #15
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However, weighing each rod from many sets from many manufacturers will give people a good idea on who is consistent and who is not.
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Old 12-21-2009, 02:06 AM   #16
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Quote:
Originally Posted by Texy32 View Post
Gruppe-s uses Helix H beam rods in their shortblock. I can not seem to find anymore info on them.

Anyone?
They are acually tomei rods. I bought a gruppe-s built block a little more than three years ago(when they were dirt cheap). I was worried about the helix rods, but then when I spun a bearing, and I disassembled that bad boy, I came to find out they were tomei rods. I thought I got an error in my favor, but then I called them and they said they are infact the same rods tomei sells for $$$$ just relabled as helix, even though the rods themselves have tomei slabbed all over 'em.

In regards to the thread, since you don't have weights for these, I just pulled my motor (going back to stock), I haven't decided if I'm going to sell it whole, part it out, or put it in my 08 sti that I will be buying. If I part it out I will definitely weigh them for ya.

DK
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Old 12-21-2009, 10:22 PM   #17
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So I weighed one of the Crawford rods that I have and it was 1.12lbs or 508g. The scale I used was not the greatest (was at the hardware store for measuring bulk hardware) so imagine it is rarely calibrated and not the finest resolution. But from this result I must conclude that the weights listed on the rods are correct. The weighs that are written on the rods are; 509.6, 509.8, 510.1, 510.3. So I would venture to say the Crawford "Long Rods" are 510g, their length C-C is 131.6mm since they are just phase 1 NA ej25 replacement rods. If you still want a picture I could probably post one but it looks like any other H beam rod.
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Old 12-22-2009, 03:13 AM   #18
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Its nice to have a list, but don't be tricked into thinking that the lightest rod is the best rod.
How do you measure strength and quality...?
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Old 12-22-2009, 10:56 AM   #19
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Quote:
Originally Posted by Beetspeed View Post
Its nice to have a list, but don't be tricked into thinking that the lightest rod is the best rod.
How do you measure strength and quality...?
Thats easy... on the dyno!

And the lightest rod usually fails first when you are making big HP

Team Crawford
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Old 12-22-2009, 11:23 AM   #20
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^So since you posted Crawford why not give us some more info on your rods. Like weight, length, manufacturer, what hp you rate them too, etc.
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Old 12-23-2009, 01:23 PM   #21
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Quote:
Originally Posted by MartinSTi05 View Post
I am currently building a 2.12 stroker using eagle rods. I also happen to have a set of eagle rods, stock STi rods, stock 02 WRX rods and a digital scale with a resolution to .1 grams lying around in my shop. If you want I can weigh all three for you on the same scale to give you an idea of the absolute and relative weights. I can also give you the the individual weights for the Eagle rods if you want so we can begin to rate the various brands on their consistency.
Would you mind weighing these rods?

I'm really interested to have a double verification on a stock STi rod.
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Old 12-23-2009, 01:25 PM   #22
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Quote:
Originally Posted by Crystal_Imprezav View Post
OEM STi Rods - 589g

Manley H-Beam Rods on the same scale - 518g-520g
Quote:
Originally Posted by modaddict View Post
2.5L 2000 and newer SOHC
.905”
2.165”
5.180”
.840”
585g
SUB-230-550-1315F

It's interesting that the "bomb proof" Pauter rod is 4g lighter than the OEM sti rod.

I would love to have independant verification on this.


FWIW, 1lb has 454 grams.

Running a rod that is relatively light (500g I'll use as "light") the Pauter rods would come in at 340g heavier or .75lb's.

I'm most definitely not worried about 3/4 of a pound.

big wig racers are.....
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Old 12-23-2009, 01:50 PM   #23
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updated the 1st post with moAr.
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Old 12-23-2009, 11:35 PM   #24
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you guys really want to compare my long rod's weight to a standard length rod?...that' seems like a great comparison
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Old 12-23-2009, 11:35 PM   #25
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Quote:
Originally Posted by Patrick Olsen View Post
Here are some weights I got from TWE a while back: "STi = 586.6g, EJ25 SOHC = 610.7g, Oliver = 544g (our personal favourite), Pauter = 604.8g." I have a set of the 544g Oliver rods, they're "normal" Phase II SOHC dimensions and I'm not sure they're made anymore. I got the impression from Tom @ TWE that they just had the one set, which I bought from them.

Interesting that the Pauter weight he quoted (for the Phase II SOHC application) is ~20g higher than what you've found.

Pat Olsen
I too have a set of Pauters that came in 20 g higher than what is stated on the web site mine came in @ 603.4
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