knew I should have labelled them
Mk1 rack
-
coop12g295
- 998 Cooper
- Posts: 693
- Joined: Thu Jun 24, 2010 4:31 pm
- Location: Portsmouth Hants
Mk1 rack
Rooting through my stash and found 3 racks is there any easy way to know which is for a mk1
knew I should have labelled them
knew I should have labelled them
-
swifty
- 1275 Cooper S
- Posts: 1549
- Joined: Thu Jun 24, 2010 11:19 pm
- Location: Essex
- Been thanked: 12 times
Re: Mk1 rack
Haven't got the answer for you but I'm glad you've bought the subject up as I need to know as well .
1963 austin Cooper s mk1 1071
1966 Austin Cooper s mk1 1275
1968 Austin Cooper mk2 998
1962 Morris mini super 850
Porsche 997 turbo S
Ford transit van 280s.
I am from Essex
1966 Austin Cooper s mk1 1275
1968 Austin Cooper mk2 998
1962 Morris mini super 850
Porsche 997 turbo S
Ford transit van 280s.
I am from Essex
-
InimiaD
- 1275 Cooper S
- Posts: 1526
- Joined: Thu Jul 01, 2010 11:20 pm
- Location: West of Offas Dyke.
Re: Mk1 rack
I thought MK 1 racks didn't have the plug for the centralizing / locator pin.
The other way to check is to measure the travel of the rack in each direction which should be 1.75 " in old money.
The other way to check is to measure the travel of the rack in each direction which should be 1.75 " in old money.
-
Andrew1967
- 1275 Cooper S
- Posts: 7911
- Joined: Thu Jun 24, 2010 6:35 pm
- Location: Usually in my garage on the east coast of Norfolk, UK
- Been thanked: 5 times
Re: Mk1 rack
Mk1 racks have smaller turning circle compared to a Mk2.
Cant remember the number of turns but think it might be something like 2.1 for Mk1 and 2.7 for Mk2 ?
Cant remember the number of turns but think it might be something like 2.1 for Mk1 and 2.7 for Mk2 ?
Last edited by Andrew1967 on Fri Apr 04, 2014 5:53 am, edited 1 time in total.
-
'S'-type
- 998 Cooper
- Posts: 439
- Joined: Fri Nov 01, 2013 9:59 pm
- Location: Buckinghamshire
- Has thanked: 21 times
- Been thanked: 6 times
Re: Mk1 rack
I was pondering this question too. I have a few racks stored and didn't label them. A quick bit of research tells me that the Mark 1 rack had 15 teeth. I'm not sure how easy it is to count them without dismantling though. I also don't know if the mark 2 has more or less! My guess is more as the track rod ends on the mark 2 were closer to the hub and the rack has more travel.
When the mark 2 rack was introduced it had a plastic plug, on the opposite side to the pinion, which is removed to temporarily drop in a locator pin that locks the rack in the central position. When on the car this would be under the rubber grommet in the heel board. I don't know if this practice carried on in the later marks.
I haven't looked closely at my racks to see whether either of these identifying methods works! Maybe I'll have a look tomorrow.
When the mark 2 rack was introduced it had a plastic plug, on the opposite side to the pinion, which is removed to temporarily drop in a locator pin that locks the rack in the central position. When on the car this would be under the rubber grommet in the heel board. I don't know if this practice carried on in the later marks.
I haven't looked closely at my racks to see whether either of these identifying methods works! Maybe I'll have a look tomorrow.