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Re-using 2G OE Main Bolts

GSR-VR

Proven Member
111
4
Oct 7, 2012
Albuquerque, New_Mexico
Can I re-use 2G main bolts? I hear they are torque to yield BUT to me that seems like a mistake because if you were to plasti-gauge them you would have to buy TWO sets of main bolts?!WTF
 

BogusSVO

Proven Member
5,891
310
Jul 1, 2009
Pensacola, Florida
Measure them and make sure they are in spec, if they are, go on with the build.
 

GoodbyeSTI

Proven Member
87
6
Oct 3, 2013
Billings, Montana
Just curious, if your rebuilding or have it torn that far apart i would replace them. just for piece of mind.
 

BogusSVO

Proven Member
5,891
310
Jul 1, 2009
Pensacola, Florida
If he was going to replace them, may as well just go ARP main studs and have the main bores checked, and line hone if needed.
 

GSR-VR

Proven Member
111
4
Oct 7, 2012
Albuquerque, New_Mexico
Thanks for the replies guys... My day is ruined... I snapped my rod bolts...

I am going with ARPs...
 

GSR-VR

Proven Member
111
4
Oct 7, 2012
Albuquerque, New_Mexico
I had NO idea the rod bolts were so weak. (TTY?) Also I just bought this nice $150 torque wrench only to find out it doesn't click.. EVER..

Thanks for everything guys. You guys are the silver lining on this day.
 

BogusSVO

Proven Member
5,891
310
Jul 1, 2009
Pensacola, Florida
When you get the ARP rod bolts, take the rods to a machine shop and have them resize the rods when they install the ARP rod bolts.

I have a set I have to do, the last shop did not resize the rods, and they are no where close to round.

What Brand torque wrench? Take it back and get another.
 

GSR-VR

Proven Member
111
4
Oct 7, 2012
Albuquerque, New_Mexico
When you get the ARP rod bolts, take the rods to a machine shop and have them resize the rods when they install the ARP rod bolts.

I have a set I have to do, the last shop did not resize the rods, and they are no where close to round.

What Brand torque wrench? Take it back and get another.


It was called "Performance Tool" 1/2 Drive Click Type Torque Wrench.

Another question. Why do I need to re-size the rods when I change hardware type?
I ask out of curiosity and perhaps ignorance...
 

GoodbyeSTI

Proven Member
87
6
Oct 3, 2013
Billings, Montana
Of course you know to plastigauge all your clearances. Mine was a little scary tight considering the bse, 12k later i'm glad I took the time to check.
 

bryanwheat

DSM Wiseman
7,106
186
Aug 16, 2004
Columbia, Missouri
It was called "Performance Tool" 1/2 Drive Click Type Torque Wrench.

Another question. Why do I need to re-size the rods when I change hardware type?
I ask out of curiosity and perhaps ignorance...

Performance tool is not a good quality brand at all. I would return that thing and to to sears and buy a craftsman. I got a real good deal on a 1/2 inch that goes up to 150 for around 90 bucks.
 

BogusSVO

Proven Member
5,891
310
Jul 1, 2009
Pensacola, Florida
Why resize the rods when going ARP? The process of knocking out the old bolt and pressing in the new one will distort the bore of the rod and make it egg shaped.

The High and low spec is like .0007 seven tenths of one thousandths of one inch, or about 1/6th of a sheet of notebook paper.

Not a whole lot of room for error.
 

GSR-VR

Proven Member
111
4
Oct 7, 2012
Albuquerque, New_Mexico
Thank you for the knowledgeable responses and I will indeed pick up a new Torque Wrench. :thumb:

Should I also have the mains align bored when I install the ARP main studs?
 

BogusSVO

Proven Member
5,891
310
Jul 1, 2009
Pensacola, Florida
Have the main bores checked, align hone if needed.

Out of the last 7 2g blocks that i have installed ARP main studs in, only 1 needed to be align honed.
 
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