Hey there everyone.

Just a query at this stage. I have just got my new wagon and am begining my big plans for this baby (i will be starting my own progress thread shortly).

It has a fairly well worked A14 in it at the moment and it will stay that way for a while but i have been researching long term mods and have a question.

I have been seriously considering a worked L20B conversion in this baby (l20b, balanced, ported, polished, cam, flat tops and twin su's/sidey's???, extractors and exhaust). My main question is with this set up what sort of diff would handle the power??? Obviously the current diff wouldn't cut it, and i am actually a bit worried about how it will handle the current a14 once it has been tuned and i have put my soon to be aquired GX head in it but that's a whole different story.

I was thinking a H165 ute diff just simply because of the ease of the conversion. My only query is will it be able to handle the tourque??? I'm not 100% what the L20B will end up putting out, i guess it will depend on my budget at the time, but does anyone know if it will generally do the job?

I have heard of doing the 120y/corolla diff conversion aswell but does this require the diff to be cut down and modified to fit? If so i think i would just end up going r31 skyline to get the lsd and rear disc brakes.

The other thing that worries me is what tailshaft would be required to make these sort of combinations work? I have heard a 180b tailshaft can be used with the trx box but what would be needed to fit it into the ute diff or 120y/corolla option? Anyone with experiences here?

I would prefer just to do the ute diff thing cause it will be easier, will fit my current tailshaft and will easily handle the current engine once i get it all tuned and the gx head in there. My only query is will this stack up with my long term plans? OR should i just go the larger diff conversion now to save me doing it again later down the track.

Thanks
Trav

a h165 should be fine, L20b bluebirds had h165s in them

Ok thanks tyrie.... i wasn't aware of that.

So the bluebird tailshaft should also fit up with the trx 5 speed box? Shortened of course.

Thanks
Trav

a 120Y BW will be alot cheaper. They're the same width as the 1200 diff. These diffs were also used in lots of different 2L cars.

Are the BW diffs easy enough to find though?

Also what tailshaft is needed for this conversion? Will the trx tailshaft be compatable?

Thanks
Trav

i thought the bluebirds had a h190 or something like that

s3 bluebirds had a h190. My 2.6L sigma had the same borgwarner diff as 120Ys.

i would use h165 it should be fine.

lsd's are expensive though

you can also use a stanza tailshaft to cut down.

Cool thanks ange, i think i will go that way. I will just have to be patient with the lsd i guess and try and snap one up somewhere.

Stick with what i know......you know.

Cheers
Trav

Dont be to fussed with the Tailshaft Trav, you use two tail shafts. one with the yoke for your box and one with the flange to bolt to the diff then they get shortened and balanced. i have a contact for when you get to that stage.