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Old 01-25-2012, 10:13 AM
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Arp main bolts

The 454 block and mains have been checked by a machinist. I was wondering if I can change to Arp main bolts without having them rechecked or align honed. The bottom end is already assembled.

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Old 01-25-2012, 08:51 PM
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Quote:
Originally Posted by cdminter59
The 454 block and mains have been checked by a machinist. I was wondering if I can change to Arp main bolts without having them rechecked or align honed. The bottom end is already assembled.
Just changing to bolts wont change the alignment of the caps, BUT the additional strength of the bolt, and (generally) higher torque, MAY distort the roundness of the hole.
But most of the time, not by much.
Most of the time when switching to studs, a line hone is reccomended, because there is no shoulder on the stud, and the higher torque rating.
The bolts have a shoulder that acts somewhat like an alignment dowel in centering the cap. But again, not by much.
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Old 01-26-2012, 07:26 AM
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Read the instructions that came with the bolt kit as ARP knows more then anyone about fasteners and how they work!!!!
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Old 01-26-2012, 12:49 PM
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Quote:
Originally Posted by cdminter59
The 454 block and mains have been checked by a machinist. I was wondering if I can change to Arp main bolts without having them rechecked or align honed. The bottom end is already assembled.
I guess the first question is why are you entertaining studs?

There is really no need for them and several large negatives if the additional fastener strength isn't needed or if the engine will be subject to frequent tear downs, therefore, you want to eliminate the wear and tear on the casting's threads. Many people who use studs get into problems of pulling the casting threads out, a lot of hassle to fix if you don't really needed it to hold the motor together.

Bogie
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Old 01-26-2012, 01:27 PM
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Quote:
Originally Posted by oldbogie
I guess the first question is why are you entertaining studs?

There is really no need for them and several large negatives if the additional fastener strength isn't needed or if the engine will be subject to frequent tear downs, therefore, you want to eliminate the wear and tear on the casting's threads. Many people who use studs get into problems of pulling the casting threads out, a lot of hassle to fix if you don't really needed it to hold the motor together.

Bogie
I think he is wanting to use ARP Bolt kit not a stud kit!!
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Old 01-26-2012, 01:51 PM
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Originally Posted by CNC BLOCKS NE
I think he is wanting to use ARP Bolt kit not a stud kit!!
Now that I paid attention to the words, I think you're right. This indoor speed reading can by a dangerous sport.

Where've you been? Haven't seen anything for a while, did you take a look at the picture of that ugly end to end and cross teed cracked bore a fellow wanted to sleeve here a couple weeks ago? There was no consensus, my thoughts were the cracking would if it didn't already extend into the head bolt boss making the block probably not worth trying to save, others thought it OK to sleeve, I was rather hoping you'd chime in.

Bogie
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