land-speed
[Top] [All Lists]

Re: What's New

To: <ardunbill@webtv.net>, <land-speed@autox.team.net>
Subject: Re: What's New
From: "Nafzger" <nafzger@vtc.net>
Date: Mon, 12 Mar 2001 18:35:02 -0700
Bill,
 I had to make some special length studs for a Jaguar XK 150 engine in a car
I was restoring about ten years ago and I found that a place in Tucson
called Copper State Nut & Bolt had threaded grade 8 rod. I used that and as
far as I know it has not been a problem. The Owner drives the car
occasionally and I have done two more cars for him and he has not said a
word. Maybe that would work.
Howard
----- Original Message -----
From: <ardunbill@webtv.net>
To: <land-speed@autox.team.net>
Sent: Monday, March 12, 2001 3:46 PM
Subject: What's New


> Hi Folks, Keith said what's going on, here's what's going on in the
> Great Dismal Swamp.
>
> Being told that with a flat, dead-soft one piece copper Ardun gasket, 60
> ft. lbs of torque is necessary on 7/16 molygreased fine threads to
> achieve the necessary head joint integrity, I tested my homemade 4130
> studs to destruction today.  No not all of them, just the four specials
> I had to make, which have reduced 5/16 extensions on 'em up to help hold
> the rocker covers on.  All the others are ARPs which are well up to the
> job.
>
> So after hearing that well-known "pop", removing the carefully-assembled
> head, and extracting the broken stub by devious means, I called ARP to
> see what could be done.  There was good news and bad news.  The good
> news was they actually make a 7/16 stud 7-3/8" long which is the working
> length I need, but the other news is I'll have to find my own means of
> putting the 5/16 extension on it.  Like the fella said, "We could make a
> special for you, but it would be $1K apiece, and I don't think you want
> to go that way."  How right he was.  He did go on to say that sometime
> back, a couple years ago, somebody, he couldn't remember who, had ARP
> make 20 sets of Ardun studs, and they did make these oddballs with the
> reduced tops on 'em.  The batch order was big enough to get a fairly
> reasonable price on them.  Bet they still cost an arm and a leg.  Maybe
> it was Don Orosco, with his repro Ardun project, or maybe his successor
> Don Ferguson who took over the repros.
>
> So anyway I ordered the four longies I needed, and I'll leave it to your
> imagination how I will stick the extension on there.  The ARP guy said
> the heat treatment of his stud starts to go away at 900 degrees, so that
> limits your options.  Since brazing is 1300 or more, and welding even
> more.
>
> Anybody know where I could get 4 U.S. made, certified bonafide 7/16 NC
> Grade 8 bolts 10 inches long?  We could turn one end down to 5/16 and
> put a couple of threads on it.  The ARP studs are claimed to be way
> better than Grade 8, and I believe it.  They are also straight, which
> not every Grade 8 bolt is.
>
> Cheers from Ardun Bill

///
///  land-speed@autox.team.net mailing list
///


<Prev in Thread] Current Thread [Next in Thread>