Spike3.0 Posted February 27, 2021 Share Posted February 27, 2021 I'm looking for advice please. I've done a fair bit of searching but can't seem to find a consistent answer, or at least the best route. I'm looking to complete a manual conversion on my Supra with the most promising route looking to be using the BMW M3 E46 6 Speed box. My question is what else apart from the gearbox i need, as currently the car is bare of any transmission having bought it this way. So far from research and Mike who i purchased the car from i think its the below, unless anyone can tell me differently. Auto flex plate Spacer PMC adapter flywheel Clutch Pedal assembly Clutch hardpipe Prop shaft Thanks in advance, Andy Quote Link to comment Share on other sites More sharing options...
Dan8 Posted February 28, 2021 Share Posted February 28, 2021 I am also in the process of doing this conversion and I think it’s better if you use a bigger capacity reservoir and rod as well buddy think a land cruiser one 1 Quote Link to comment Share on other sites More sharing options...
Spike3.0 Posted February 28, 2021 Author Share Posted February 28, 2021 Hi Dan, cheers mate. I found a video of someone installing the land cruiser cylinder but they had to resort back due to clearance issues. Please let me know if you have any success as I'd look to replicate it, I'm determined to get it ready for this summer Quote Link to comment Share on other sites More sharing options...
Dan8 Posted February 28, 2021 Share Posted February 28, 2021 I found this from Izzy a while back while researching into it I solved it with master cylinder from Toyota Land Cruiser. Link:https://www.autodoc.co.uk/abs/7716685 and swapped the rod and reservoir from Supra master cylinder. But be carefull, the Land Cruiser cylinder has a plug on the bottom, you have to plug the hole. It looks like this: http://www.allfourx4.com.au/WebRoot/Store/Shops/allfourx4/54CF/8740/D0C2/463B/C691/C0A8/DA35/CB11/31410-60372A.jpg After this modification, everything works as it should My car has engine out box and rear subframe as been rebuilding the whole car but when the engine and box goes in which hopefully should be pretty soon now the weather is picking up I will let you know mate good luck with your build 1 Quote Link to comment Share on other sites More sharing options...
Nathanj1142 Posted March 1, 2021 Share Posted March 1, 2021 Hey mate, I've just got the e46 box mounted up in the car with the PMC kit. You will also need a custom gearbox mount making up, which im sure you're aware of! There is a chasebays kit that uses a nice wilwood master but it is rather expensive, but its pretty. They also do braided clutch lines which SHOULD work with the 420g slave? https://www.chasebays.com/collections/toyota-supra-sc300-sc400/products/chase-bays-clutch-master-cylinder-adapter-lexus-is300?variant=32572614475854 1 Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted March 2, 2021 Share Posted March 2, 2021 you may find the gearing very short if you are the a01 diff , great for track use and sprinting but not ideal as a motorway car. 1 Quote Link to comment Share on other sites More sharing options...
AC93 Posted March 2, 2021 Share Posted March 2, 2021 16 minutes ago, dr_jekyll said: you may find the gearing very short if you are the a01 diff , great for track use and sprinting but not ideal as a motorway car. This.. when I had the M3 box fitted 70mph was like 3500rpm, felt quick for an n/a tho lol Now I've had it boosted and mated with an A03B diff it's lovely! 1 Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted March 4, 2021 Share Posted March 4, 2021 Yes for motorway use the M3 box needs a 3.2 final drive to make the gearing right IMO. That diff in that car does not have a 3.2 final drive Quote Link to comment Share on other sites More sharing options...
Spike3.0 Posted March 4, 2021 Author Share Posted March 4, 2021 3 hours ago, T2 MSW said: Yes for motorway use the M3 box needs a 3.2 final drive to make the gearing right IMO. That diff in that car does not have a 3.2 final drive Hi Mike, do you remember what diff it has? I can't see any thing to ID what it is from looking sorry. Thanks for all the advice folks, I never thought about the ratios so it's a huge help! Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted March 4, 2021 Share Posted March 4, 2021 I don't think its been changed so its what ever is on the VIN plate in the engine bay. I was going to swap it out to a A02B with 3.2 pinion but never got round to doing it. 1 Quote Link to comment Share on other sites More sharing options...
Spike3.0 Posted March 4, 2021 Author Share Posted March 4, 2021 Cheers Mike will take a look later and report back Quote Link to comment Share on other sites More sharing options...
Spike3.0 Posted March 4, 2021 Author Share Posted March 4, 2021 Update, It's the A01A which I believe has a 3.77 Ratio. Guessing I'll be better changing this if using the M3 Box? But curve ball - has anyone got experience with the BMW GS6 transmission, and with it being off a diesel does this change things? I only ask as this seems a popular and cheaper option too. Sorry for the naïve questions, I'll get there eventually Quote Link to comment Share on other sites More sharing options...
Noz Posted March 5, 2021 Share Posted March 5, 2021 (edited) Friend uses the box for drifting. Not any help for ratios. He used it for to price and ease of replacing. Had 600hp on it. But. I'd swap it with an M3 box. Ratio's should be better and resale value of the car would complement your investment better. I'd prefer a cd009 box to a BMW diesel if you cant choose an M3 one. Stay the M3 route and then get an 8.8 diff setup from Grannas racing. Not the cheapest route. But could sort your ratio issues as think you he supports witj different diff ratios. Edited March 5, 2021 by Noz (see edit history) Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted March 5, 2021 Share Posted March 5, 2021 CD009 is a good option and I think readily available. Ive been struggling to find the 420G boxes for less than £900 now Quote Link to comment Share on other sites More sharing options...
AC93 Posted March 5, 2021 Share Posted March 5, 2021 13 hours ago, Spike3.0 said: Update, It's the A01A which I believe has a 3.77 Ratio. Guessing I'll be better changing this if using the M3 Box? But curve ball - has anyone got experience with the BMW GS6 transmission, and with it being off a diesel does this change things? I only ask as this seems a popular and cheaper option too. Sorry for the naïve questions, I'll get there eventually A01 is 4.1 ratio A02 is 3.76 A03 is 3.266 Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted March 6, 2021 Share Posted March 6, 2021 the gs6 is the box of choice for us , they are very strong and readily available ,ratio is not much difference to the m3 box. the 3.2 final drive or 3.77 improves things the 4.1 is great for acceleration but has a low top end and is screaming ay 90 Quote Link to comment Share on other sites More sharing options...
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