rallygarage
Member
Evo boxes are exellent. Especially Drenth. There is many diff options including active. This is the first time I hear of Celica with Evo trans. Interesting. I wounder if there is an adapter plate as Evo engine is straight and Celica is tilted. Then what to do about axles and diffs. Most people running competitively are using Xtrack still. I think by the time you get everything right you might as well get an Xtrack. Cost will be close. Also Gemini will make you gears for any kit. You need build sheets to provide them. That is how I got my straight cut final drive.
When Staffs box was bult there was a 34 mm restrictor used. Problems started when we began to use it with American 40 mm restrictor. Staffs internals are very nice. Better then many kits for evo. Then we went to 34 mm in US and after retuning by Mik Hill my trans was holding up no problem. That was also the time when I upgraded to straight cut final drive.
As I understand Evo trans comes with straight cut final drive stock. So Evo kits dont have final drives. Maybe that is one of the reasons they cost less.
Evo conversion should also be helped by the fact that you can install Evo read diff into Celica rear subframe on the table. You dont need to weld any brackets to the car. By contrast when Evo X GSR is prepped for rally here in US you have to install Evo IX rear diff and that reqires shell modifications. PIA
When Staffs box was bult there was a 34 mm restrictor used. Problems started when we began to use it with American 40 mm restrictor. Staffs internals are very nice. Better then many kits for evo. Then we went to 34 mm in US and after retuning by Mik Hill my trans was holding up no problem. That was also the time when I upgraded to straight cut final drive.
As I understand Evo trans comes with straight cut final drive stock. So Evo kits dont have final drives. Maybe that is one of the reasons they cost less.
Evo conversion should also be helped by the fact that you can install Evo read diff into Celica rear subframe on the table. You dont need to weld any brackets to the car. By contrast when Evo X GSR is prepped for rally here in US you have to install Evo IX rear diff and that reqires shell modifications. PIA