Steering Rack Identification

[Gary Schulz]

Steering rack question; is there any way to tell me what i've got here? Is this a mk1 or mk2 rack? I am trying to sort through several racks and arms I have here and I am looking for my original mk1 rack and arms so I get the right geometry.

How do you tell a mk1 from a mk2 rack?

Thanks

Steering Rack 1.jpg

Steering Rack 2.jpg

Steering Rack 3.jpg

[Spider]

I'm pretty sure that's a MKI Rack.

[Andrew1967]

Mk1 rack has about 2.3 turns side to side.

Mk2 has about 2.7 turns if I remember correctly.

Mk2 also usually has rack centralising machined hole in the inner rack (with a plastic plug in the rack housing) that can be accessed through the grommet in the floor on the other side of the toe board to the column shaft.

[cheleker]

Andrew, caution with the centering hole comparison. Reproduction racks have been made for Mk II+ that do not have the hole.
Anyone know what the turns are for the Pose Pack (a.k.a. Sports Pack) racks?

[Spider]

Andrew, caution with the centering hole comparison. Reproduction racks have been made for Mk II+ that do not have the hole.
Anyone know what the turns are for the Pose Pack (a.k.a. Sports Pack) racks?

That's what I thought and not all production MKII racks had them either.

[Andrew1967]

Andrew, caution with the centering hole comparison. Reproduction racks have been made for Mk II+ that do not have the hole.
Anyone know what the turns are for the Pose Pack (a.k.a. Sports Pack) racks?

Thanks, that's something to remember.

The number of turns side to side is the easiest way to determine Mk1 from Mk2 then ?

[LarryLebel]

I know a MkI has 2.7 turns and MkII is less, so, Andrew1967's numbers are backwards. FYI you can't mix and match MkI/II racks and MkI/II steering arms.

[Andrew1967]

I know a MkI has 2.7 turns and MkII is less, so, Andrew1967's numbers are backwards. FYI you can't mix and match MkI/II racks and MkI/II steering arms.

Hmm, maybe I have got it arse about face and stand to be corrected if so, Larry.

I thought the Mk1 rack had the fewer number of turns which explains the much poorer turning circle of a Mk1

[Spider]

I know a MkI has 2.7 turns and MkII is less, so, Andrew1967's numbers are backwards. FYI you can't mix and match MkI/II racks and MkI/II steering arms.

Hmm, maybe I have got it arse about face and stand to be corrected if so, Larry.

I thought the Mk1 rack had the fewer number of turns which explains the much poorer turning circle of a Mk1

I'm sure a MKI had fewer turns than a MKII, the MKI has 15 teeth on the rack and the MKII had 25.