quick question on gearboxes

[xr8eater]

if i have an R33 Gts-t series 2 auto and an R32 Gts-t auto can a manual gearbox be put into both with out any mods apart from cluch, cluch kit and gear box?????

[Sydneykid]

Yep, you left off console, pedals (you have to change the brake pedal, as well as add the clutch pedal), clutch master cylinder, speedo drive, tail shaft, gear lever, spiggot bearing and probably a few more incidentals.

[ferni]

and ecu?

[xr8eater]

thanks sydneykid allways helpfull and i was sure an auto ecu was ok to use

[xr8eater]

does any one have pics on where to install the pedals or a pic on an R33 gtr/gts-t manual where the cluch cable goes through the fire wall

[Revhead]

Yes you can use an auto ECU, I have seen many over the years doing exactly this. All you have to do is short the neutral cutout switch, so that the ECU permanently sees neutral. The mixtures are out a bit as the ECU sees neutral when you're obviously in gear and putting load on the engine, and apparently the mapping is different between the two as well.

[Guest RedLineGTR]

does any one have pics on where to install the pedals or a pic on an R33 gtr/gts-t manual where the cluch cable goes through the fire wall

You usually have to drill holes for the wires/cables to go through.

[xr8eater]

so what would be better rb26dett box or a rb25det box with an auto diff any problems fiting

the gtr box apart from removing the transfer case

[Sydneykid]

so what would be better rb26dett box or a rb25det box with an auto diff any problems fiting

the gtr box apart from removing the transfer case

They are internally the same, so there is no real "difference". I suggest you have a look at a GTR gearbox, simply "removing the transfer case" is not an option.

[xr8eater]

thanks sydney kid i think your new nick name should be yoda thanks mate

[rs73]

You can use Auto ECU and get away with it but u may not get optimum result. Checkout the dyno sheet below, which is a manual conversion R33 GTS-t still using the original Auto ECU. See where the auto ECU cut power to allow the auto gearbox to shift (cos it thinks the auto's still there).

You'd get better result with Manual ECU. Also have a look at my leaner A/F ratio, so you gotta be careful with boost not to get it too lean and detonate your engine.

[xr8eater]

hmmm yes very true