E416 PBO Posted February 2, 2010 Share Posted February 2, 2010 Hi, Does any have these arms??? Or any ideas where I could possibly get them?? Any help will be greatly appreciated. (P.s. It for my 400 replica - trying to fit Commodore five stud hubs to my car!) Regards, Luke. Link to comment Share on other sites More sharing options...
paul1393 Posted February 2, 2010 Share Posted February 2, 2010 Did you get any steering arms at all with the Commodore hubs??? The Commodore steering arms need to be heated to restore the ackerman angle when used on the Manta as the steering rack is in front of the crossmember, unlike the Record/Commodore/Senator/Monza where the steering drag link runs behind the crossmember. They will also have to be fitted LH on RH and vice versa. Opel Rekord D items will bolt to your Commodore hubs. Also you might find the Senator/Monza ones also fit, however you will have to check this. Paul. Link to comment Share on other sites More sharing options...
E416 PBO Posted February 2, 2010 Author Share Posted February 2, 2010 Did you get any steering arms at all with the Commodore hubs??? The Commodore steering arms need to be heated to restore the ackerman angle when used on the Manta as the steering rack is in front of the crossmember, unlike the Record/Commodore/Senator/Monza where the steering drag link runs behind the crossmember. They will also have to be fitted LH on RH and vice versa. Opel Rekord D items will bolt to your Commodore hubs. Also you might find the Senator/Monza ones also fit, however you will have to check this. Paul. I actually have a complete Commodore. Today was the first day I got a chance to look at the hubs. I have everything belonging to the Commodore. Whats that 'ackerman' angle your referring to? Link to comment Share on other sites More sharing options...
mantadoc Posted February 2, 2010 Share Posted February 2, 2010 Whats that 'ackerman' angle your referring to? Google it, saves time explaining but it is important to correct turn in, handling and tyre wear. Link to comment Share on other sites More sharing options...
lamchop77 Posted February 3, 2010 Share Posted February 3, 2010 I actually have a complete Commodore. Today was the first day I got a chance to look at the hubs. I have everything belonging to the Commodore. Whats that 'ackerman' angle your referring to? Ackerman angle is what makes your front wheels run in different arcs when turning, coupled with the caster angle. Perfect ackerman is set by taking a line through each front upright pivot from the centre of the axle. The steering arms must be on this line for the perfect setting. Short Circuit website has tech pages that explain along with alot of other suspension info. You really need to know what your doing with this, if you muck it up the car will handle like a pig!!!! recommend read How to build and modify race and rally cars by Alan Staniforth and also Compertition Car Suspension by the same bloke. HTH Chris Link to comment Share on other sites More sharing options...
GTEPETE Posted February 6, 2010 Share Posted February 6, 2010 The arms you need are very rare Manta 400 steering arms. The last set on ebay went for a cool 1000 euros!!!!! Link to comment Share on other sites More sharing options...
E416 PBO Posted February 6, 2010 Author Share Posted February 6, 2010 Ackerman angle is what makes your front wheels run in different arcs when turning, coupled with the caster angle. Perfect ackerman is set by taking a line through each front upright pivot from the centre of the axle. The steering arms must be on this line for the perfect setting. Short Circuit website has tech pages that explain along with alot of other suspension info. You really need to know what your doing with this, if you muck it up the car will handle like a pig!!!! recommend read How to build and modify race and rally cars by Alan Staniforth and also Compertition Car Suspension by the same bloke. HTH Chris Thanks a mil Chris, I'll look into that. Link to comment Share on other sites More sharing options...
GTEPETE Posted February 7, 2010 Share Posted February 7, 2010 If you look at your Commodore, the steering arms face to wards the rear (as the steering is attached to the rear of the axle)and are more curved inwards than Manta ones. I'm sure a blacksmith could heat them up and straighten the Commodore arms, maybe some one else has had this done? Link to comment Share on other sites More sharing options...
mikemanta Posted February 7, 2010 Share Posted February 7, 2010 better idea junk the commodore hubs and get some alloy hubs from TJM and get them with the 5x120 pcd drilled into them that way you can keep your original stub axles and your suspension settings won't be affected, The commodore hubs will be worth good money to someone so it might not cost too much to up grade. Link to comment Share on other sites More sharing options...
GTEPETE Posted February 7, 2010 Share Posted February 7, 2010 I agree with Mike, although I have front Commodore axles/discs, Ive gone for a set from TJMs... Link to comment Share on other sites More sharing options...
paul1393 Posted February 7, 2010 Share Posted February 7, 2010 (edited) If you look at your Commodore, the steering arms face to wards the rear (as the steering is attached to the rear of the axle)and are more curved inwards than Manta ones. I'm sure a blacksmith could heat them up and straighten the Commodore arms, maybe some one else has had this done? This is exactly what I have had done on my Manta A. I took some measurements and with expert help worked out how much to bend the steering arms after heating cheery red with Oxy/acet torch. Edited February 7, 2010 by paul1393 Link to comment Share on other sites More sharing options...
E416 PBO Posted February 11, 2010 Author Share Posted February 11, 2010 This is exactly what I have had done on my Manta A. I took some measurements and with expert help worked out how much to bend the steering arms after heating cheery red with Oxy/acet torch. Paul, Thanks a mil for the advice. I went to a lot of trouble to get the Commodore hubs, so I think I'll go down this route. Ps.. I wish the bottom of my car was as clean as yours - looks immaculate. Luke. Link to comment Share on other sites More sharing options...
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