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#1 (permalink) |
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Opeler
Join Date: Dec 2007
Location: 1331 west 156th ave Broomfield colo 80023
Posts: 2
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Help to id rack and pinion
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#2 (permalink) |
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Old Opeler
Join Date: Jun 2003
Location: New Zealand
Posts: 5,686
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Just 2 ...
There is a 'wide' r&p from Manta/Asconas and a narrower track one from Kadetts and GTs.
From memory the ratio is the same and GTs use shorter steering arms to 'quicken' the steering. These are interchangable between Kadetts and GTs - but not between Manta/Ascona and GT/Kadett.
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GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved Last edited by GTJIM; 12-25-2007 at 02:50 AM. Reason: corrected info |
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#3 (permalink) |
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Have Opel, Will Travel
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The GT one is actually shorter for quicker steering, and it also has some Ackerman built in where the Kadett pretty much has none.
Kadett and GT ones will look the same, mounts to the car with a couple of "D" shaped straps around on each end of th rack. The Manta one will have a couple of loops cast in and mount with a couple bolts.
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1958 Rekord Sedan, 1958 Olympia Wagon, 1959 Opel Olympia Sedan, 1967 Kadett Coupe, 1967 Admiral Sedan 4L CIH-6, 1968 Kadett fastback 1.1L, 1970 Kadett Wagon Turbo 2.2L, 1971 Kadett Sedan 1.1L, 1975 Manta Wagon 4.3L V-6 |
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#5 (permalink) |
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Old Opeler
Join Date: Jun 2003
Location: New Zealand
Posts: 5,686
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R & P
It is the steering arms that are different - I am guessing Opel did that for a good reason ...
Maybe someone can tell us if the GT and Kadett racks interchange - or do they have different angles on the pinion shaft? Just had a look at the Parts Book: The rack housings have the same part number for 1969-73 GTs and 1968-72 Kadetts but GTs have two different gear sets (1969-70 and 1971-73) and Kadetts three different ones including a seperate set for 1.1L. Be interesting to know exactly what the differences are .... I know the later Kadett (1968-72) inner and outer ball ends are the same as the GT ones. The earlier Kadett ones (pre-1967) are lighter and have different tapers where they go into the steering arms - there were several changes in front suspensions in 1965-67 and all the parts do not interchange.
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GTJim Opel Owner since last Century! Copyright © 2000-2009 J D Henry All Rights Reserved Last edited by GTJIM; 12-25-2007 at 12:21 PM. Reason: more info |
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#6 (permalink) |
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Have Opel, Will Travel
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Quicker steering=harder to turn the steering wheel. That's OK for a sports car, but for the family cruiser they wanted little old ladies to be able to turn the wheel without building up arms of steel. In the Kadett there's also the potential for more weight on the front wheels, which would make them harder to turn, though I think the car weighs so much less overall that that's probably not a real issue.
I would say if you're driving a 1.1 Kadett you should absolutely swap in the GT steering arms for the quicker feel. On either a Kadett 1.9 or any Opel with wide front tires the issue would be how hard it is to turn the wheel. If you've ever wished for power steering, you want the Kadett arms, if you wish it was sportier feeling and your arms aren't taxed, go with the GT arms. As to the rack differences I couldn't say, I've never gone further than the steering arms myself. It would be worth looking into, though.
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1958 Rekord Sedan, 1958 Olympia Wagon, 1959 Opel Olympia Sedan, 1967 Kadett Coupe, 1967 Admiral Sedan 4L CIH-6, 1968 Kadett fastback 1.1L, 1970 Kadett Wagon Turbo 2.2L, 1971 Kadett Sedan 1.1L, 1975 Manta Wagon 4.3L V-6 |
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#7 (permalink) |
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former opel racer
Join Date: Nov 2002
Location: near some glaciers
Posts: 2,863
Real Name: Jeff "Oh-Oh" Denton
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All I know is that if you put a Kadett steering arm on the right side and a GT arm on the left (as an experiment to increase Ackerman effect in a hard left turn) that you will get so much Ackerman that you take the left front Goodyear Eagle slick beyond its "slip angle" and it will hop up and down. Strange feeling! Didn't help one bit, but we had to try it, just for fun...
Of course you would never try this on a street car, much less run 3" stagger in your tires. So as Stephen says, the big difference would be steering effort, followed by noticing you don't have to turn the steering wheel quite so far. Merry Christmas, everyone!
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No Opels were harmed in the filming of this movie. However two Mustangs, a Pinto, and a Capri were hospitalized. One Mustang was euthanized the next morning. |
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