Mkiii gerabox etc in Mkiv ?

[mattysupra]

Want to convert from auto to manual but dont have the money at the moment to buy a getrag until finished doing all the other stuff.

 

So can i simply buy a MKIII supra and transfer the clutch pedal / gearbox and all the bits maybe leaving me to have a prop made and the tunnel needing to be modded? Or are the master cylinder, pedal etc different. Does the MKIII gearbox even bolt up or does it need a adaptor plate or maybe different bell housing?

 

It would be nice if i can get it all working and simply swap to the 6 speed box at a later date.

 

Basically i just want to get the car run in for 1000 miles and mapped on a manual box. I will worry about finding a 6 speed after this.

 

thanks in advance

[Swampy442]

Search the forum mate, theres a manual conversion thread already running. But fwiw the Mk3 box will need a new rear mount, shifter extending, prop shaft making up and speed sensor.

[mattysupra]

Search the forum mate, theres a manual conversion thread already running. But fwiw the Mk3 box will need a new rear mount, shifter extending, prop shaft making up and speed sensor.

 

Searched and read the thread about doing a standard 6 speed conversion and the argument over the speed sensor.

 

Im looking more towards the other parts like the clutch pedal, master cylinder, the actual gearbox bolt pattern form the earlier supra. Does the box just bolt up but need a extra brace maybe? Any chance of a link telling me these answers ? or are you just talking about the 6 speed converstion thread that i think 'dude' wrote?

[Swampy442]

You said Mk3 Supra, that never had a 6 speed? No, there is an existing thread putting the R154 from the Mk3 into the Mk4. All you need to bolt it up is the correct bellhousing. The clutch pedal and master cylinder from a Mk4 Sup, Mk3 Sup, Soarer are all the same parts. But theres tons more than that.

 

10 seconds of searching found this :-

http://www.mkivsupra.net/vbb/showthread.php?230644-Anybody-done-the-r154-conversion-on-a-tt.&highlight=r154

[mattysupra]

Thankyou for posting the link.

 

Regarding the search, i presume you searched for "r154 conversion" or similar judging by what you found.

 

Its all well and good using the search if you know what your searching for. Me i don't know what a r154 box is hence i have spent hours looking around searching for things like " old gearbox conversion" I dont know the codes.

 

Ask me any question regarding a skyline and i can tell you what to search for etc, but on the supra you have to bare with me!

 

but thankyou for posting the link up. That will be a great help.

[Swampy442]

Lol sorry, I assumed you knew, my mistake Yeah all the important info is there mate. A 6 speed swap is easier because all the parts are easily available and drop straight into the car, the 154 is a bit tougher because it was never intended to fit into a Mk4. To make things much easier, and marginally less expensive, look for the box from a Toyota Chaser or Soarer, has the correct mount and shifter extension.

[mattysupra]

Lol sorry, I assumed you knew, my mistake Yeah all the important info is there mate. A 6 speed swap is easier because all the parts are easily available and drop straight into the car, the 154 is a bit tougher because it was never intended to fit into a Mk4. To make things much easier, and marginally less expensive, look for the box from a Toyota Chaser or Soarer, has the correct mount and shifter extension.

 

Thanks.

 

ye i can build a engine etc but im more skyline based. When it comes to gearbox codes and stuff bolted to the outside i ent got a clue!

 

i dont have a issue with fabbing stuff either. But i dont want to be making parts when i could of simply brought the part in the first place.