From auto to manual

#MessagePosted
#1
Hi out there, I have a 2003 vy Ls1 with auto and i can get my hands on a 6speed i have been told that the t56 manual box wont fit because they designedit so you cannot do the change over is this true

Driver_robertsr

Feb 21, 2012, 7:02 pm

#2So you're saying to want to take the auto transmission off your car and place a manual one in it's place! Doubt it can be done and you'd need an entire engine with the manual transmission as the mating between the transmission cases are different normally.

Driver_pebbles61

Feb 21, 2012, 7:50 pm

#3cheers mate i was told the same thanks for that

Driver_robertsr

Feb 21, 2012, 8:05 pm

#4above is wrong. if its available as a manual with that engine, you just have to fit the right box, a company is not going to make one engine for auto and one for manual.

Admittedly the only auto to manual conversion was on a nissan a31 cefiro, converted from 4wd auto to 4wd manual, straight bolt on fit.

Driver_jsbike

Feb 21, 2012, 8:11 pm

#5Not all engines do jsbike, you're right, but most seem to; I know that's the case for my car. Also they don't need to make an entire new engine, just a different case.

Driver_pebbles61

Feb 21, 2012, 8:14 pm

#6Was the gear box behind or under the engine! if it's under (like on most FWDs) then normally the mating is different.

Driver_pebbles61

Feb 21, 2012, 8:15 pm

#7Surely you can mod the bellhousing to fit!

Driver_jason18

Feb 21, 2012, 8:21 pm

#8a31 cefiro so gearbox is behind with the front differential integrated in to the engine sump.

engines casings as far as I know don't often differ between auto and manual, they do often differ between transverse, and east west with the same motor, example being sr20de primera (transverse) and sr20de (east-west) silvia.

Driver_jsbike

Feb 21, 2012, 8:25 pm

#9Often the crankshaft is different between an auto and a manual.

Driver_alimac1

Feb 21, 2012, 8:25 pm

#10VY LS1 is a dunnydoor is it not!Nothing is impossible as far as physically mounting the box on the back of the engine.I have no idea but I'm assuming the 'puter systems for auto and manual are probably going to be the bigest problem.Ive swaped auto and manual motors before and got away with it but in the more moden stuff why would you bother!Sell the auto car and buy a manual.At endf of day will work out better cheeper and far easier.

Driver_supernova2

Feb 21, 2012, 8:29 pm

#11it can be done but not by a backyarder.the conversion it's self is quite straight forward.but it's the electronics that are the snag. auto 1 has a different loom and comp to the manual 1. the engine ecm will try to talk to the auto and when it doesn't get a signal back it won't start.been down this road before.cost the owner quite a few bucks to get the electrics sorted.in older cars you could just bridge the wiring to the inhibitor switch and you were off. modern electronics don't work that way.

Driver_electric_blonde

Feb 21, 2012, 8:39 pm

#12
+2

Driver_gammelvind

Feb 21, 2012, 9:57 pm

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