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Re: New Big-end Bolts?

To: spitfires@autox.team.net
Subject: Re: New Big-end Bolts?
From: Jeff Gruber <jgruber@demainsoft.com>
Date: Tue, 10 Jul 2001 19:14:08 -0500
I have one recommendation to use ARP bolts.  They are pricey compared to 
the Spit suppliers.


Does anyone have recommendations for a supplier?  Any of the BC parts 
suppliers that you can recommend?


Thanks.


Jeff Gruber

At 08:56 AM 7/10/2001 -0400, Nolan Penney wrote:
>I would renew them, *and* be very carefull and thorough installing 
>them.  I have seen several Spitfire engines destroyed because the 
>connecting rod bolt either stretched or backed out, resulting in the rod 
>failing and either  going through the block or cracking it.
>
>Along with that caution, I'd add another caution about who's connecting 
>rod bolt you used.  I have no idea of the lines carried by the typical 
>Spitfire vendors, but from the little I've seen of failures, I suspect 
>someone is passing off poor bolts as connecting rod bolts.  The bolt is a 
>standard configuration, so I'd be more inclined to either use an aircraft 
>grade, or get them locally from a reputable speed shop.
>
> >>> Jeff Gruber <jgruber@demainsoft.com> 07/08 10:58 AM >>>
>My Haynes manual says that I should renew the bolts on the connecting rod
>big-end.  Although, they are not ultra expensive ($6.95 per for a total of
>$55.60 plus S & H) that seems like a lot of money to spend when I have
>plenty of used bolts.  The eight from the motor  I'm working on and eight
>from the one I took out of the car.
>
>Is this a good expense?  How often do those darned bolts give out anyway?

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