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Old Mar 10, 2012, 05:50 PM
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Originally Posted by tscompusa
no problem. glad to help. i posted a example also for you on vd.
Thanks for the graph and explaining. I have a better understanding now.
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Old Mar 10, 2012, 06:17 PM
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look at my other post. broke my rod bolts and snapped a h beam. I guess there is a reason they tell you to upgrade to age625's for 600hp+
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Old Mar 10, 2012, 06:24 PM
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Originally Posted by burnzy
look at my other post. broke my rod bolts and snapped a h beam. I guess there is a reason they tell you to upgrade to age625's for 600hp+
arent they 3/8" arp 2000's? i would get together with these guys. thats not right.

http://forums.nasioc.com/forums/show....php?t=2263681
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Old Mar 10, 2012, 06:27 PM
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Originally Posted by n2oiroc
arent they 3/8" arp 2000's? i would get together with these guys. thats not right.

http://forums.nasioc.com/forums/show....php?t=2263681
no, the 625's are the upgraded set.
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Old Mar 10, 2012, 06:31 PM
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Originally Posted by Android4g63
no, the 625's are the upgraded set.
i realize that, but when is the last time you heard of a turbo tuff rod breaking a bolt or a beam? something is wrong as the turbo tuffs use a plain arp 2000 bolt without trouble.
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Old Mar 10, 2012, 06:34 PM
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I do have another question...Can the rod bolts with the complete engine still in the car, or is it recommended to break it down.
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Old Mar 10, 2012, 06:41 PM
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Originally Posted by Android4g63
I do have another question...Can the rod bolts with the complete engine still in the car, or is it recommended to break it down.
you mean can the rod bolts be replaced with the engine in the car? yes, you just need to drop the oil pan.
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Old Mar 10, 2012, 06:43 PM
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Originally Posted by n2oiroc
you mean can the rod bolts be replaced with the engine in the car? yes, you just need to drop the oil pan.
Yes. lol. I'm sorry. I'm an idiot. Thank you
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Old Mar 10, 2012, 06:46 PM
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i did find it strange that the h beam+ recommend age625 for 800whp but then the arp2000 that are used to the normal h beam 600whp are ok on the i beams at 1000whp? i mean they don't even list i beam+ with 625, i'm sure it's an option but not listed like the h+ are.
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Old Mar 10, 2012, 06:50 PM
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Originally Posted by burnzy
i did find it strange that the h beam+ recommend age625 for 800whp but then the arp2000 that are used to the normal h beam 600whp are ok on the i beams at 1000whp? i mean they don't even list i beam+ with 625, i'm sure it's an option but not listed like the h+ are.
i dont understand that either. with the price of h beams + the 625+ you can get the turbo tuffs. no brainer for me.
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Old Mar 10, 2012, 06:51 PM
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why is it the rod bolts on the turbo tuffs don't break being arp2000 tho and with the h beam they do?? the i beam should put more stress on the bolts being heavier even..
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Old Mar 10, 2012, 06:57 PM
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how much are the upgraded bolts?
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Old Mar 10, 2012, 07:07 PM
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around $100. But why didnt you upgraded when you guys build the engine?

When we build mine we did all the bolts and all in the head . It was a no brainer . I am also running the Manley H beams, with Cp pistons.

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Old Mar 10, 2012, 07:16 PM
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Originally Posted by Piro Fyre
IMO, rod bolts are the first to go so getting stronger ones would help.
Originally Posted by 420a-t
i would just run those rods and upgrade the bolts imo especially if its already in your car.
Originally Posted by Android4g63
ok cool, thank you. I'll upgrade the rod bolts, and keep the torque down.
Originally Posted by burnzy
look at my other post. broke my rod bolts and snapped a h beam. I guess there is a reason they tell you to upgrade to age625's for 600hp+
Originally Posted by burnzy
why is it the rod bolts on the turbo tuffs don't break being arp2000 tho and with the h beam they do?? the i beam should put more stress on the bolts being heavier even..
Sorry guys, have to say it. Rod bolt failures are very uncommon. The number 1 reason for breaking rod bolts are over revving the car making the bolts stretch. Like racing and going from 3rd to 2nd! Rod bolts don't really break do to hp/tq either. The H beam will snap before the rod bolts. It really drives me crazy when people talk about changing rod bolts. It is not needed... If you have a cheap h beam motor that you are revving to 9+k rpms then ya change the rod bolts but if you are revving to 8k you will be just fine.

Rods also should never be rated by hp, only tq. Your H beams are rated to 550tq tops but I would keep it around 500-525tq. Aaron at English Racing is running an H beam just like the Manley and he makes 800+whp. He just keeps the tq down low enough to keep the rod in the block. Same concept with stock rod motors. We can make 600whp on the stock evo block if we keep tq below 400tq. Everything is relative to cylinder pressure/tq number.

Mikey
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Old Mar 10, 2012, 07:18 PM
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If I would've knew, I would've done it back then instead of spending the money on the bolts now and the labor. No brainer!!!
I wasn't even into cars when the motor blew. I just knew it was cheaper to build it than to buy another stock engine.
Last edited by Android4g63; Mar 10, 2012 at 07:21 PM.
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