Guys, I'm just checking the points on UN1s that I've gleaned from the net and other posts.
The 21 on (013) boxes are recommended as being the stronger ones.
The turbo boxes have better gear ratios for road use.
The Alpine boxes need to be inverted for use which would allow a lower engine fit, reducing the need to cant the engine forward or accept a high engine fit/odd driveshaft angles.
My questions are these:
1. What is the standard torque limit of these boxes for street use?
2. What improvement in torque limit does the one piece shaft upgrade give?
3. What does the the modified 2nd/3rd gears and drilled out oil ways achieve? (Tornado does this)
4. What modifications would be required to invert an Alpine box?
5. What torque limit does the 6-spd kit have.
I'm curious about this gearbox as I enjoy the challenge of modifying mechanical things. I know that there are better boxes out there, but as a pet project, the UN1 seems like an interesting place to start.
I figured I'd modify an Alpine Turbo box to run inverted and handle a decent amount of torque as a project. If I decide to run a higher power later on, I could replace it but if my budget is restricted, I'll just wait until it blows or take it easy on power mods until I can afford a ZFQ or similar.
Stew
The 21 on (013) boxes are recommended as being the stronger ones.
The turbo boxes have better gear ratios for road use.
The Alpine boxes need to be inverted for use which would allow a lower engine fit, reducing the need to cant the engine forward or accept a high engine fit/odd driveshaft angles.
My questions are these:
1. What is the standard torque limit of these boxes for street use?
2. What improvement in torque limit does the one piece shaft upgrade give?
3. What does the the modified 2nd/3rd gears and drilled out oil ways achieve? (Tornado does this)
4. What modifications would be required to invert an Alpine box?
5. What torque limit does the 6-spd kit have.
I'm curious about this gearbox as I enjoy the challenge of modifying mechanical things. I know that there are better boxes out there, but as a pet project, the UN1 seems like an interesting place to start.
I figured I'd modify an Alpine Turbo box to run inverted and handle a decent amount of torque as a project. If I decide to run a higher power later on, I could replace it but if my budget is restricted, I'll just wait until it blows or take it easy on power mods until I can afford a ZFQ or similar.
Stew