Help me weigh the pros and cons built auto trans?

[compactfean]

So, I unfortunately have done a 5 speed swap and produce too much power for it to be reliable anymore and my trans is going out. I have thought about going z32 trans swap with a really good twin plate clutch.
$1000 for the swap kit
$800 for clutch
$300 or so for trans
= $2100 for a decent race setup
I'm trying to see what my options are for building an auto trans since I'm more of a straight line kinda guy.
The problem is I can't find much for parts.
Its recommended to have an adjustable tcu, is there anything it there?
Valve body?
Clutch packs?
I've sourced a torque converter but don't know there reputation.
Any experience our recommendations would be great, thanks in advance guys.

[TheRealNap0le0n]

if big power is your goal and you really want an auto id look into a built GM trans swap..

i had a TCI streetfighter TH350 trans in my old camaro with a 350 motor and that thing would shift so hard into 2nd it scared me the first time i drove it after the swap.... like full on 2nd gear and the tires broke loose.

[moso]

diddo, if your looking to seriously drag your 240 and want to be consistent you will need a fully built auto like the th350 or maybe the sledge-o-matic (fordomatic) 2spd transmission. historically bracket racers have used built autos to keep the numbers consistent and it works so well that you can set your breakout times within .0x and be dead on all night long.

[compactfean]

I was actually thinking about a chevy trans but all the fab work just to even get it to fit properly plus building the trans itself would be a little much. I know the 240 auto isnt a bad platform, being that the same trans is also in the trucks, and not to mention I did 6k neutral drops in my auto before the 5 speed swap (maybe I was lucky). There was a guy on here that had a bunch of work done to his auto but I can't find his post or what parts can be used.

[compactfean]

I was actually thinking about a chevy trans but all the fab work just to even get it to fit properly plus building the trans itself would be a little much. I know the 240 auto isnt a bad platform, being that the same trans is also in the trucks, and not to mention I did 6k neutral drops in my auto before the 5 speed swap (maybe I was lucky). There was a guy on here that had a bunch of work done to his auto but I can't find his post or what parts can be used.

[compactfean]

Ok so this is what I've found so far. There is light for you automatic trans guys! First thing I tried to find, to no avail, is an adjustable tcu. They have them for the 300zx tt that's it. Its a whopping $1043 and with no gauranty it could be adapted to our transmissions which got me thinking of controlling the auto trans manually.
How to do so, manually valve body!
People have searched and have wanted this option for a long time so here it is.
http://www.automatictransmission.com.au ... wsId=19197
Long story short, if you research some of the common problems like excess friction and heat from"smooth" shifting and the variable fluid pressure problems...this solves all of that.
I have contacted then for a price and will let you guys know an estimate to be shipped to the states. I also asked if the pattern is reverse that way you can't shift into reverse at like 100mph. Lol
Once I do some more research on clutch packs and the torque converter I should have an idea what this is going to run.
Ill keep ya posted.

[compactfean]

So after everything said and done the manual valve body after shipping is $550 and takes about 2 weeks after payment. (company is in aus.)
The valve body does have a large core charge so I would send that to them asap or it will end up being more than $550.

http://aceconverter.com/index.php?main_ ... 8ed3298865
$425 not including shipping for tc.
The trans cooler and fan setup with ss braided line is about $200-300.
B&m ratchet shifter $200.re
Now I just need to find kevlar bands and clutch packs.

[TheRealNap0le0n]

the thing that kills auto trannys for the most part is heat and friction.

that being said the chevy benefit is its parts availability IE: converters, input shafts, pumps, sprags, etc. all fortified for racing.

what about a trans-brake? things to consider.

[compactfean]

My only problem with that is how much it would run to buy the trans, build it, and pay for a custom bell housing done, plus getting a custom trans brace, and driveline, not to meantion buying a launch control that will read off of a chevy spead signal when I already have launch control in my emu. A trans lock I was thinking about for bad a** launches wired up to a time controlled box (can't remember what its called) but dont know if it will be needed you have a high stall tc. Dont get me wrong, its probably the better way to go but if this car is gonna run me another 5k Id rather put a down on a house, lol.
If I could get a stock auto (which I can get anywhere.....every thing has the same trani as we have! Lol) for damne near free, turn it into a manumatic, beaf up the clutches and bands to hold my power I think would be cheaper than a manual setup. s*** there so plentiful later on id probly get another auto and put kevlar in it for a back up. If I can find clutch packs im sure its gonna be a tank setup for cheaper than the z32 swap with a twin plate clutch.
The other thing is I need to see if a manual trans bell housing for the ka can have the actual auto trans bolted to it. If there where a ton of 240's in the wrecking yard id just test fit it but we dont. Ive got an sr so bell housings are different and finding an auto bell housing for an sr will be hard.

[Flicktitty]

i would personally go with a TH350/TH400/Powerglide. In the long run it will be the better option. I'm sure someone has or can make a KA/SR to TH trans. Then that trans built up some. Trans cooler/convertor/shift kit and see how it goes. plus when your ready to move on you can sell a TH350/TH400 ALOT easier then a "built" Nissan auto. plus you would have to have away to change/adjust the shift patterns/points. If you want a Nissan trans i would look into a Z32 TT Auto.

[compactfean]

See the power glide does have a bell housing for the 300zx tt thats $600. Nothing for an sr motor though but maybe they can do a custom bell housing. Also I looked at manual and auto bell housings and are nowhere near the same just by visually comparing them on ebay so I would just have to get a jdm auto trans for the sr.
I wonder if the z32 and z32tt auto bell housings are the same? If they are than because the z32 is a 01a trans and the z32tt is a 03a trans, our auto trans is a 01a could recieve a z32tt trans, and that I have found a ton of parts for.
So much reseach so little progress. And man theres not much love for the stock slush box! Lol

[Flicktitty]

not much for Nissan auto's, maybe have someone make an adapter to fit a A340E (Toyota supra) Auto onto a KA/SR?