Hanns Per Posted March 11, 2023 Share Posted March 11, 2023 I evaluate to convert to a Mazda gearbox. Is any experience what it takes to install a mazda gearobox. I have come so far that I would need a new bellhouse and a shorter propshaft with a maxda slip yoke, modify the tunnel, and the metal part between the gearbox and propshaft, a gear lever. but does it really fit?? rear mount??thks for feedbackHanns Per Link to comment Share on other sites More sharing options...
Leadership Team Shortshift Posted March 11, 2023 Leadership Team Share Posted March 11, 2023 That's interesting, Hanns Per. Nothing to contribute, i"m afraid, but I'm curious about the torque capacity of the Mazda gearbox. Is it sufficient to handle CSR260 torques?James Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 11, 2023 Share Posted March 11, 2023 The Caterham supplied Mazda box has a different casing which I believe alters the cant (angle) of the box to engine and is also smaller to fit the tunnel. I've seen the Caterham gearboxes being stripped and re-assembled at this company....https://www.vitesse-ltd.com/pages/about-us Link to comment Share on other sites More sharing options...
7 wonders of the world Posted March 11, 2023 Share Posted March 11, 2023 An easier and better option is a full alloy cased needle roller type 9Better ratios (you have a choice)Higher torque capacityHigher sustained rpm capacityLighterSteve @ SPC Tracsport is the man to speak too Link to comment Share on other sites More sharing options...
Hanns Per Posted March 11, 2023 Author Share Posted March 11, 2023 I have the semi helical T9 box but I find it quite loud up to 3rd its fo touring I sit up to 8 hrs in the car. On my uprated T9 gearbox I do not like the backlash and I am not confident if it copes well with the 250 - 260 hp of a 2.4 Duratec in the long run. Link to comment Share on other sites More sharing options...
Hanns Per Posted March 11, 2023 Author Share Posted March 11, 2023 what I found out is that it copes with 50% more power than the upraeted T9 box? Link to comment Share on other sites More sharing options...
mic Posted March 11, 2023 Share Posted March 11, 2023 The CSR chassis was redesigned to fit the Mazda box, the tunnel is to tight to fit the Mazda box. I 'm not sure you will get away with stretching it as we did when the first ones were fitted to the S3 and SV cars. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted March 11, 2023 Share Posted March 11, 2023 What is the uprated T9 you refer too, assume this is a different box to the Tracsport Semi Heli ....?Have you considered noise insulation in the tunnel...?Steve offers a touring ratio set, standard helix on the gears, ratios with than the semi heli but better than a stock boxhttps://www.tracsport.com/gearkits-1/tracsport-t9-full-helical-sport-touring-gear-kit Link to comment Share on other sites More sharing options...
K7 VCT Posted March 11, 2023 Share Posted March 11, 2023 Surely the European 485 cars have the mazda box, it's a csr chassis Link to comment Share on other sites More sharing options...
7 wonders of the world Posted March 11, 2023 Share Posted March 11, 2023 See #7 from mic Link to comment Share on other sites More sharing options...
Leadership Team Shortshift Posted March 12, 2023 Leadership Team Share Posted March 12, 2023 Yes, there are two considerations here: will it fit, and is it strong enough?Mic's earlier response confirms that the original CSR chassis had to be modified so that the Mazda box will fit (for the later European 485 versions), and he went on to say that it would be a bit of a stretch to stretch the original CSR frame to take the box. So possibly ruled out (unless chassis mods are carried out) on the "does it fit?" criterion.And then the strength issue. The CSR 260 has around 33% more torquey-things than the European 485 (272Nm vs 206Nm) so that question remains unanswered at this stage.A bit of a challenge, methinks...James Link to comment Share on other sites More sharing options...
Hanns Per Posted March 12, 2023 Author Share Posted March 12, 2023 the uprated T9 is the BGH one with with all the stuff to make it stronger, the semi helical T9 is the one is the one from Tracsport.I will check with Steve if his helical gearset is stronger than the strongest T9 specs. and if it does not do backlash. this would be the simpliest solution I assumethks Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 12, 2023 Share Posted March 12, 2023 Vittesse, the company I linked to earlier make a Mazda box conversion kit for the MGB V8 so you would think it can handle the torque. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted March 12, 2023 Share Posted March 12, 2023 A 2.4 Duratec will produce more power, torque (and noise) than a Rover V8.......... and will rev a lot more too Link to comment Share on other sites More sharing options...
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