Eagle Rods - Is this a good deal?

[chrisb33]

A friend of mine is selling me a set of eagle 6 blot h-beam rods. has 20k miles on them. selling it to me at $150 for the whole set. here's a pic. dont mind the 5th rod on the right coz it has a spun rod bearing.

let me know what you guys think. I dont know much about forged rods, is 20k miles too much? am i going to encounter reliability issues? i have a stock 6 bolt so im guessing this is better than the stock right? despite the mileage on the rods?

plus can i still do the 1g rod/2g piston combo with these rods? ive got a brand new NPR 2g pistons.

thanks for your inputs.

chris b

 

[interex]

I don't think I'd give more than $100 for them with 20k miles.

 

[chrisb33]

would there be any reliability issues with eagle rods with 20k miles on them?

 

[JusMX141]

plus can i still do the 1g rod/2g piston combo with these rods? ive got a brand new NPR 2g pistons.

If I were in your shoes, I'd probably pass on these rods (even though they're a deal) and have your stock 6-bolt rods machined to accept the 2G pistons. You'll probably never reach the point where you're chancing a 1G rod breaking....at least not with stock 2G pistons. I'd have to think alot before I'd buy a set of used Eagle rods then pay to have them machined.

 

[chrisb33]

If I were in your shoes, I'd probably pass on these rods (even though they're a deal) and have your stock 6-bolt rods machined to accept the 2G pistons. You'll probably never reach the point where you're chancing a 1G rod breaking....at least not with stock 2G pistons. I'd have to think alot before I'd buy a set of used Eagle rods then pay to have them machined.

My understanding is that connecting rods take the bulk of the stress during combustion. I dont know much about 2g pistons except that they offer higher compression ratio vs. OEM 1g's thats why i got them. Is there anything more special with these 2g pistons?

thanks.

chris b

 

[JusMX141]

The 2G's wrist pins are thicker and a larger diameter (slightly) than a 6-bolt. Figure that one out....stronger wrist pins but weaker rods on the 2G. That's almost as silly as using a smaller turbo (T25 versus 14B) with bigger intercooler piping (2-1/4" versus 1-7/8").

Here's a diagram of what needs to be modded on the 1G rod to make the 2G pistons work:

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[chrisb33]

Hi Jus,

Thanks for the diagram. Saved it so that i can send it to my machinist.

Im still debating on whether or not i should get these eagle rods. As i mentioned, the rods take the brunt of the stress during combustion, while the 2g wrist pins are thicker than the 1g's as you mentioned, and i do run a meth injection system, i still want to do things right in building my long block.

remember those martial arts experts who punches those piles of bricks? the weaker ones break only the bricks on top, the stronger ones break the bricks in the middle and the top bricks remain unbroken (an analogy i use on the stress on the rods vs. piston during combustion), but the real "hulk-type" strong man will break all the pile of bricks.

Having said that, my thought process is that these forged rods are still better than the OEM 6bolt rods right? If they are then im all for it. But if you guys say that the OEM rods will do me just fine then that would be great coz that's money that can be spent elsewhere.

btw, buddy. Dave from BEP said that my housing will be shipped to you by today or tomorrow drop me a PM when it's with you already. the turbo should be on your way already by now too

chris b

 

[Burnett03]

The rods look clean and it's a good deal. How do the wrist pin brass bushings look?

 

[chrisb33]

The rods look clean and it's a good deal. How do the wrist pin brass bushings look?

hmmm i actually dont know. all i have are pics sent to me. But i'll ask my friend to send me a pic of the wrist pin brass bushings and will post it here.

thanks.

chris b

 

[Yngvar]

with the eagle rods you will need forged pistons

 

[erald01]

I would get them if i was you because 150 bucks you could not go wrong comparing to 350 bucks or more for a band new set.

 

[GalantGreg]

I would get them, but not use them for a stock set up. To me it makes no sense to use Eagle rods on stock pistons, be it 1g or 2g. Get yourself a set of JE or Wisco pistons to match and rebuild the motor.

 

[BoredDSM]

I don't see any of the brass bushing left . Mainly with steel rods the bearings take the biggest abuse if your reving high. I have a brand new set of scat rods for sale never used for cheap if your interested. Pm me if your interested. But 20k is a bit much.

 

[chrisb33]

with the eagle rods you will need forged pistons

At the risk of asking this really dumb question, why cant you mate an OEM piston with a forged rod? while on the other hand, you can mate a forged piston with an OEM rod?

same machining principle is involved right?

I know that the ideal scenario is to go forged rods and pistons, just wanted to know why it's a NEED to do forged pistons with forged rods.

chris b

 

[->PrOjEcTGS<-]

Because, the stock wrist pin style is a pressed fit. Which means that it is pressed into the rod and does not move. Only the piston moves on the wrist pin. The wrist pins on most forged pistons and rods are called full floating wrist pins. Where the pin can rotate inside the rod and the piston. The wrist pin is then held in place by retaining clips at the end of each side of the pin.

I have seen forged pistons on stock rods before but I think they still use the pressed fit wrist pins.

 

[chrisb33]

Now i see. thanks! but yeah there's a lot here doing stock rods and forged pistons combo.

If i do get this eagle rod then, i'll just save up for forged pistons.

Thanks for the help guys! much appreciated.

chris b

 

[jlr2196]

Since you would have to enlarge the pin side of the rod they can easily be mated to your current 2G pistons, but in my opinion I wouldn't waste the money on having them resized. As far as having 20K on them, that is a no brainer, they are far superior to a OEM rod in strength and since they are not aluminum they're not going to stretch (which really isn't an issue with todays new aluminum rods anyway). Another opinion of mine is that H-Beam rods are highly over rated in a majority of buildups, people often overlook the additional weight of an H-beam rod over a stock style I beam, lighter reciprocating mass equals faster engine acceleration (hence the use of lightweight flywheels, armed with this knowledge applied to your internal engine components can put you in the winners circle). You can actually build a high horse engine using reworked stock rods with ARP bolts and use a lightweight forged piston with better results than a H-beam, due to the lighter mass there is less force or load put on the rod, giving it higher rpm and power ability. Just something to think about, I don't know how intense your engine build is going to be but a set of stock rods polished, shotpeened and ARP bolts installed will handle 500 horse and 7200 rpm all day.