main bolts
Thread Starter
Racer
Joined: Dec 2004
Posts: 306
Likes: 0
main bolts
i have a question, i want to use arp main bolts when i put my l98 back together.
i was told by some one that i would have to align bore my block. i have used them before in an other engine with out align boring.
has any one not align bored or had to align bore when switching over to arp main bolts?
thanks
i was told by some one that i would have to align bore my block. i have used them before in an other engine with out align boring.
has any one not align bored or had to align bore when switching over to arp main bolts?
thanks
Race Director
Joined: Feb 2004
Posts: 12,517
Likes: 19
If the main bore is currently straight, swapping to ARP bolts will likely not distort the bores too much. Technically, even if you put a different stockbolt in a different hole it could distort a wee bit. If you want to be sure, put the arp's in, torque em up, and have the machine shop bore guage them. It only takes a minute to do.
If you go with arp studs, you will have to align hon the block. Studs change the bores a ton.
If you go with arp studs, you will have to align hon the block. Studs change the bores a ton.
Burning Brakes
Joined: Nov 2005
Posts: 797
Likes: 0
From: Bedford Ma.
Originally Posted by Pete K
If the main bore is currently straight, swapping to ARP bolts will likely not distort the bores too much. Technically, even if you put a different stockbolt in a different hole it could distort a wee bit. If you want to be sure, put the arp's in, torque em up, and have the machine shop bore guage them. It only takes a minute to do.
If you go with arp studs, you will have to align hon the block. Studs change the bores a ton.
If you go with arp studs, you will have to align hon the block. Studs change the bores a ton.
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
What Pete said. A cheap way to do this is to install the crank and caps with the ARP bolts and see if it still turns free. Not as good as gaging but will tell you if there is a big problem. Rods are another matter. If you change rod bolts the big ends must be resized, at least that is what all the egg-spurts say.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Muffin
What Pete said. A cheap way to do this is to install the crank and caps with the ARP bolts and see if it still turns free. Not as good as gaging but will tell you if there is a big problem. Rods are another matter. If you change rod bolts the big ends must be resized, at least that is what all the egg-spurts say.
A couple of dollars worth of plastigage wouldn't hurt, either.
RACE ON!!!
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
Originally Posted by CFI-EFI
A couple of dollars worth of plastigage wouldn't hurt, either.
RACE ON!!!
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
First, put upper bearing shells in #1 and # 5 mains ONLY...couple drops of oil on the shells and lay the crank in...set dial indicator (those are so cheap now that everyone should own three) on crank journal #3 and check how straight your crank is...then put new bearings in all mains and OIL each , the crank MUST turn with only finger torque on the flywheel flange.
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