Rb25det oem vs arp main studs

[ANVIL]

Can i reuse stock main bolts? Or should i just upgrade? What would be the benefit over stock?

[Gorman240]

I would just upgrade, the strength of ARP bolts are far much greater than stock. ARP designed their bolts to be reusable and strong, so if you ever need to reuse them again you can do so without worry. Most stock head bolts are designed to be a one and done type of deal.

[ANVIL]

Im doing arp head studs just wondering more about the crank main cap bolts.

[Gorman240]

Main Bolts are okay to reuse, I would still suggest getting ARP if you can afford it in your build.

[Croustibat]

Read the installation instruction on their website to find out why you should not be doing that.

Or just go and pray hard you didn't need any machining work.

[ANVIL]

Read the installation instruction on their website to find out why you should not be doing that.

Or just go and pray hard you didn't need any machining work.

Elaborate pls

[ANVIL]

Fsm has no mention of having to replace main bolts when reassembling

http://i224.photobucket.com/albums/dd251/JonnoHR31/Maincap.jpg

[Mitsubayati]

Head bolts tend to stretch past the elastic limit and once that has happened you need to buy a new set, whether it's oem or arp. People suggest changing the head bolts because nobody really has the tools to measure head bolt stretch and it's just cheaper to buy new than hope old bolts are still good. Main bolts are typically re-used because they seem not to stretch as easily. If you purchase new main bolts you will likely want to take them to a machine shop with the block to ensure that the mains are still in spec when torqued as the new bolts could cause an out of round situation.

TLDR version: Buy ARP because it assures correct clamping force better than stock. Do not re-use stock unless you want HG issues down the line.