Tie Rod End Taper

Suspension, including wheel, tire and brake.
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Dave Patten
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Tie Rod End Taper

Post by Dave Patten » 19 Jan 2011 07:35

Does anyone know what the taper is on the Datsun tie rod stud?

I'm gathering parts to build a 2.5 T/A replica and rather than heat/bend the steering arms and drilling out the tie rod hole I am thinking of using a stud that bolts into the tapered hole.

The late model stockcar guys have these to raise/lower the rod end to adjust out bump steer. I like the ones that use spacers, but no reason once you find the sweet spot on the threaded ones that spacers can't be made.

Here is what I am talking about using. Just need to match stud to steering arm taper.

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Dave Patten
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Yellowcar
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Re: Tie Rod End Taper

Post by Yellowcar » 19 Jan 2011 09:19

Not sure what the taper is but if you can't find a match Speedway sells tapered reamers in the right sizes.

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okayfine
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Re: Tie Rod End Taper

Post by okayfine » 19 Jan 2011 13:28

Searched high and low for that number, and can't find it. Found a quicky way to measure: take the OD of the top of the taper, OD of the bottom, and the distance between. Plot it out on paper, take a protractor, and that should get you a realistic number.
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510-Trevor
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Re: Tie Rod End Taper

Post by 510-Trevor » 19 Jan 2011 14:46

okayfine wrote:... Plot it out on paper, take a protractor, and that should get you a realistic number.
Just use a calculator and the rule SOH CAH TOA.
1972 Yellow 4dr

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Yellowcar
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Re: Tie Rod End Taper

Post by Yellowcar » 19 Jan 2011 16:31

couple of other ways to go..

Speedway sells those bolts in both 7 and 10 degree tapers. Since the bolts are only $10 each you could just buy both and if neither fit keep the one that is closest and buy the corresponding tapered reamer.

I believe I drilled my arms to use a non tapered bolt....

or if you really want to know the taper here is some info on measuring taper http://ledyardmachine.com/documents/tapers.pdf

And some taper guages http://spartantoolsales.com/

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thisismatt
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Re: Tie Rod End Taper

Post by thisismatt » 19 Jan 2011 17:00

What about just drilling it out to 5/8ths, or whatever metric rod end size you plan to use? Or measure it with an angle finder/protractor using something long but small enough to fit into the hole.
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Dave Patten
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Re: Tie Rod End Taper

Post by Dave Patten » 20 Jan 2011 07:25

I'll have to sit down and measure/calculate the taper.

Yellowcar,
Thanks for the links. I didn't know that taper gages were available (going to have to add them to my tool box). They would sure make measuring the large end of a taperd bore more accurate than using a caliper and approximating the edge of the opening.
Dave Patten
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Dunbarton, NH

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