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F-2 Speedy 12-02-2015 05:11 PM

:D:D:D:D:D:D:cool-smiley-011:

horsepower1 12-02-2015 05:11 PM

I don't know how a rod can be rated for HP. The biggest stress on a rod is when everything changes direction on the overlap stroke and the weak link in a rod is always the bolt. RPM and piston weight are the two major factors in what a rod can handle. Rating a rod per HP is marketing.

horsepower1 12-02-2015 05:12 PM


Originally Posted by ICDEDPPL (Post 4381677)
^^^^





Really thou it all comes down to the rpm, stroke, and piston weight, NOT so much HP. I`ve had no issues with the 8740 at 900HP.

Yep.

mike tkach 12-02-2015 07:56 PM

new eagle,s with arp 2000 bolts ,around 500 bucks,scat,s with arp 2000,around 500 bucks.manleys with arp 2000,around 500 bucks.or buy new arp 2000 bolts for around 200 bucks plus 100 bucks to get the old rod,s rebuilt for a total of around 300 bucks and you still have used rods that you could of sold for around 200 bucks so you would now have 300 out of pocket for NEW rods with arp 2000 bolts,hhmmm let me think about this,lol.:confused:

GLENAMY 242SS 12-02-2015 08:10 PM


Originally Posted by mike tkach (Post 4381769)
new eagle,s with arp 2000 bolts ,around 500 bucks,scat,s with arp 2000,around 500 bucks.manleys with arp 2000,around 500 bucks.or buy new arp 2000 bolts for around 200 bucks plus 100 bucks to get the old rod,s rebuilt for a total of around 300 bucks and you still have used rods that you could of sold for around 200 bucks so you would now have 300 out of pocket for NEW rods with arp 2000 bolts,hhmmm let me think about this,lol.:confused:

So regarding selling the used ones for $200 let's use the same logic. $200 for Used rods about $200 for ARP 2000 bolts plus $100 for resizing = $500 or NEW rods with ARP 2000 bolts for around $500. Sounds like a hard sale.

mike tkach 12-02-2015 08:23 PM


Originally Posted by GLENAMY 242SS (Post 4381773)
So regarding selling the used ones for $200 let's use the same logic. $200 for Used rods about $200 for ARP 2000 bolts plus $100 for resizing = $500 or NEW rods with ARP 2000 bolts for around $500. Sounds like a hard sale.

but the dumb azz who buys them on ebay will be as happy as a pig in the mud because he just bought a set of eagle,s for 200 bucks.and he will run them in his street car as is for 10 years!

Mr Maine 12-02-2015 08:26 PM


Originally Posted by horsepower1 (Post 4381694)
I don't know how a rod can be rated for HP. The biggest stress on a rod is when everything changes direction on the overlap stroke and the weak link in a rod is always the bolt. RPM and piston weight are the two major factors in what a rod can handle. Rating a rod per HP is marketing.

As a "non pro" but mechanical engineer I never understood it either....

Black Baja 12-02-2015 09:04 PM


Originally Posted by ICDEDPPL (Post 4381662)
My other option is just to resize my current rods and call it a day . Figured if I sell my current rods I wouldn`t be into new rods for too much more but I do have a lot of stuff to buy so saving a few bucks is always on the table

I would resize or just buy the same rods you have. If you could stay away from rebalancing it will save you some money.

GLENAMY 242SS 12-02-2015 09:52 PM

If I thought the rods were perfectly OK as the OP stated and the minimum stress point on the rods far exceeded my maximum output I would save the money for other items and just ARP and resize what I have. The great debate is always what to replace and where to conserve.

mike tkach 12-02-2015 10:14 PM


Originally Posted by GLENAMY 242SS (Post 4381810)
If I thought the rods were perfectly OK as the OP stated and the minimum stress point on the rods far exceeded my maximum output I would save the money for other items and just ARP and resize what I have. The great debate is always what to replace and where to conserve.

rebuild the OLD rods and you still have OLD,USED rods vs spending SAME amount and having NEW .yep,you win.do you think any eagle rod in a 900 hp marine endurance engine is going to last forever?some people will walk past a dollar to pick up a dime because it is shiny.to each their own.rods &rod bolts is not the place to conserve imo.


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