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Re: [GMCnet] lower steering shaft complete new replacement [message #265553 is a reply to message #265550] Thu, 06 November 2014 13:05 Go to previous messageGo to previous message
Jim at the Co-op is currently offline  Jim at the Co-op   United States
Messages: 291
Registered: May 2014
Location: Orlando Florida
Karma:
Senior Member
Made a mistake on my last post--- I have ordered the same parts, they are
not here yet. I want to source after market parts we use if possible from
the same vendor. I ordered the SS joints, so little difference in cost hey
why not. The steel ones will probably last longer than you and I will care
anyway-- the stainless is just the right amount of overkill. In that this
unit has been field tested for a year with good results that's the set up I
wanna go with---- no surprises...

This is a great find, there are several other parts in the same shape.
Currently we are rebuilding the things we cannot buy new, crossing to other
reliable replacement parts is a good thing. Just one more off the
endangered species list makes room for the ones to come.

You also must understand the original steering shaft assembly needs
servicing every couple of years--- the CV boot tears and lets water screw
up the irreplaceable upper CV. When that blue insulation peals off you are
really done for. If this new one will go 10 years without servicing hey,
that's a win itself!

Jim Bounds
------------------------

On Thu, Nov 6, 2014 at 1:37 PM, KB wrote:

> just an update:
>
> You CAN mix and match various manufacturers u-joints with the DD shafts.
> They're a standard size. Eg, you can put a Flaming River u-joint on a
> Borgeson DD shaft (I asked).
> The sizes we're dealing with are quite common: the upper shaft is a
> standard GM steering column (1"-48) and the lower is a standard old style
> "big
> GM" power steering size (13/16"-36).
> (later GM steering boxes are 3/4" or in some cases, 17mm)
>
> The Borgeson DD slip shaft does NOT come with a grease zerk (though no
> reason you couldn't add one yourself). The flaming river ones probably do
> but
> are nearly double the price.
>
> You can get a stainless inner slip shaft, but the outer sleeve is still
> just steel. More money of course.
> The biggest difference between manufacturers on the slip shaft seems to be
> the rubber boot they supply.
> I wouldn't be surprised to find there was only one source for the steel.
>
> We only need about 10" on the slip shaft, so (in theory) you might be able
> to get more than one shaft out of a single order (though would need extra
> boots).
>
> I had hoped this awesome looking ready-made solution from Flaming River
> would work, but the upper joint is only good to 30 degrees (per their specs)
> and I'm pretty sure our upper joint is 35 (or more).
> Might work, might not:
> http://www.summitracing.com/parts/fla-fr1857-16/overview/
>
> Borgeson u-joints are good to 35 degrees, and we already know they work
> here.
>
> The pinch-bolt type u-joints do require notching the shaft for the
> shoulder bolt to clear (a good thing), so probably a good fit for our lower
> u-joint.
>
> So, my current shopping list:
> upper u-joint: Borgeson 1"-48x1"DD (stainless: #114352)
> DD slip shaft (Borgeson 450024 or others)
> lower u-joint: Flaming River 13/16"-36 x 3/4DD pinch-bolt u-joint
> (stainless: FR2719DD)
>
> I think there are a lot of possible solutions. Thanks to Jim Fawcett for
> heading down this path and figuring out the sizes.
>
> Karen
> 1975 26'
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