Has anyone here broken an H beam rod?

[hollywood_ikr]

I've looked and somebody has asked this question before but got no reply.

I am wondering if anyone has actually seen with their eyes an Eagle H beam rod break due to too much power? I'd also like to know how hard people have pushed them.

Not to be confused with broken rod due to improper engine building.

 

[mavericktsi83]

http://www.dsmtuners.com/threads/eagle-rod-limits.131492/

http://www.dsmtalk.com/forums/archive/index.php/t-151882.html

 

[bastarddsm]

I think you'll find the ones that are broken are from to much timing.

 

[jery1234]

Ha-ha, look at this . Was running 45+ psi , not broken but close to it . If you are looking for rods (Skunk2 ALPHA rods) are stronger than eagles ( rated 900hp)for the same price .http://www.google.com/url?sa=t&rct=...N66BIKvZasn1_eL9g&sig2=9DlTwk4nIorkYc78m8NvWg

 

[bastarddsm]

So how are you going to go about fitting a honda rod in a dsm.

 

[twicks69]

I did ok on my Eagle rods 10 years ago and made plenty of power for 3 years of major abuse in a DD 2.3L 7-bolt Eagle/Ross combo. Heck, the rods and pistons are still in a car to this day running with around 600AWHP. I was doing 750-800AWHP and 650+TQ for quite some time on it. Rod bearings were peened and I bent the cut down crank; the rods, wrist pins and pistons were great and lasted another 8 years. I had around 35,000 miles of 600+AWHP the entire time. It did 766AWHP / 660TQ at 44psi, and it didn't go back on the dyno after i fixed the valve float because I killed the turbo and a few transmissions. I know it did 150mph 1/4's no problem at 44-45psi as a daily driver.

I ran pretty conservative timing and always left power on the table. I am sure I could have put out 825-850AWHP on that setup if I felt like it, and if the crank didn't bend I would have gone higher than the 52psi I was running up to.

 

[jery1234]

http://www.google.com/url?sa=t&rct=...xSH-J75TseV5PR9Lg&sig2=29QhvSxAO2P0GsrMx3c4aQ They do them for 4g63 too, I have some coming already .

 

[90laserRSfwd]

Tim, quick question: Standard rod bolts (ARP 2000) or upgraded?

 

[twicks69]

With eagle rods ARP2000's are fine. If you are trying to find the limits of Eagle rods above 800AWHP, then I'd suggest L19 rod bolts, and definitely upgraded wrist pins for the pistons. I would personally suggest going to the thick-wall wrist pins above 650AWHP on any setup.

 

[hollywood_ikr]

With eagle rods ARP2000's are fine. If you are trying to find the limits of Eagle rods above 800AWHP, then I'd suggest L19 rod bolts, and definitely upgraded wrist pins for the pistons. I would personally suggest going to the thick-wall wrist pins above 650AWHP on any setup.

Thanks for the great reply. I'm looking to be around 800 Hp but was very concerned about the rods. I had just never seen an h rod break nor heard of one breaking from power alone. I did read on other forums that rpm is more detrimental than high output such as through engine braking. Any truth to that?

 

[jery1234]

There's a guy on link forum Johnytsi that was running on eagles 2.3 42 psi 9500 rpm 170 shot an d after 3 years the rods have streched to breaking point. So yes rpm is a factor. Strange enough arp 2000 where ok and big end that rod was still bolted on the crank .

 

[jery1234]

this is the eagle rod

 

[hollywood_ikr]

this is the eagle rod

Wow! He was asking for it though. Lol
Do you know the Hp he was putting out?

 

[jery1234]

All together it was close to 1k hp