Having probs with my current autobox.. (gears slipping)..

 

I am having the oil & filter swapped out to see if this helps ..

 

I have bought a back-up auto box this weekend as it was priced too good to miss.. (just in case)

 

My Question is ...

 

having read about an uprated (or Fast Road) autobox..

 

What would be involved in improving the spare box I have... time, effort components, costs etc..

 

I have set my mind on buying the SAWv2 "shift at will" system for they auto rather than converting to manuall.. as basically I spend 20+hrs a week in my manual beemer and "auto" at the weekend is a novel change... but i still want some control as and when...

 

any comments advice is appreciated..

 

flikz

Anyone? :cool:

 

Having probs with my current autobox.. (gears slipping)..

 

I am having the oil & filter swapped out to see if this helps ..

 

I have bought a back-up auto box this weekend as it was priced too good to miss.. (just in case)

 

My Question is ...

 

having read about an uprated (or Fast Road) autobox..

 

What would be involved in improving the spare box I have... time, effort components, costs etc..

 

I have set my mind on buying the SAWv2 "shift at will" system for they auto rather than converting to manuall.. as basically I spend 20+hrs a week in my manual beemer and "auto" at the weekend is a novel change... but i still want some control as and when...

 

any comments advice is appreciated..

 

flikz

surely it would be a better option to get an automatic runaround and a manual zed for play time...

:cool: :cool:

 

The beemer is a company car... auto is'nt an option..

 

I have serioisly considered a manual conversion.. but the middle ground of "shift at will" seems a good idea.. and the couple of forum owners who have this set-up give great reviews..

 

I don't thrash the zed (yet) but I wanted to know what would be involved in uprating an auto box so when I do install a "S.A.W." set-up the the gear change would be as "crisp" as possible..

 

 

 

surely it would be a better option to get an automatic runaround and a manual zed for play time...

I like the automatic, i know a lot of people are doings or have done a manual conversion but when your driving a manual for most of the week it makes a nice change having an auto.

I would also like to know whats involved in an "UPRATED AUTOBOX", i've just bought one myself but what is it that makes it uprated and could an able mechanically minded Z owner uprate their origional box.

automatic gearboxes are hugely complex, not really DIY servicable at all.

automatic gearboxes are hugely complex, not really DIY servicable at all.

 

OK Granted... complex and not really DIY servicable.. ..

 

But.. (and there always is) ..What is "uprated".. in an "uprated" or "fast road" autobox.. is it everything out and all new in..?? or new bearings, clutches, valves and higher line pressure..?

 

As usual.. any advice & parting of the "knowledge" would be great.. :D

 

flikz

automatic gearboxes are hugely complex, not really DIY serviceable at all.

 

I dont agree with you there, not half as much parts in a auto box unlike a manual. have striped down 3 already and they are very simple if you have a basic idea of mechanical things. the complex part is the valve block, you can strip it down and clean it but you can not modify it yourself, you need to send it away if you want to make changes etc.

I dont agree with you there, not half as much parts in a auto box unlike a manual. have striped down 3 already and they are very simple if you have a basic idea of mechanical things. the complex part is the valve block, you can strip it down and clean it but you can not modify it yourself, you need to send it away if you want to make changes etc.

 

Great... :nana2:

Now were getting somewhere.. I am a more than able mechenic.. my original question still remains.. what is "uprated" in an uprated gearbox..

 

Just look at what we can do to the engine for goodness sake and there are more than a few guys who enjoy to DIY.

 

Come on bound to be a few guys that have attempted this before and not just left the "transmission specialist" to supply "rejuvinated trannies" keeping his his "black art" to himself (and his bank balance) :p :p

 

Now any transmission specialist out ther reading this "please don't be offended" honest question.. honest answers... :cool: if anyone knows... share the wealth.. :p

 

Thanks for your input MTL.. :hyper:

 

cheerz

 

flikz

First things first, do you know what year auto box you have, there is a slight difference to the main drive shaft inside regarding the amount of bearings and the oil channels. The series 1 box's have serious oil flow probs, and over heating probs. But you can get around this by fitting a series 2 main shaft and bearing assembley, (not cheap). Then the next prob will be the clutch plates, there are only a few places that you can get the slightly heavier duty ones. Then there's the T/converter, you can have a billet one made to your spec if you want (ie, nothing happens untill 4000 rpm, then it kicks in) they do this mod on the top drag cars. You can also play around with the hydraulic valve block and slightly raise the oil pressure to give you a more solid/positive gear change, (HKS done a thing called a ALC, automatic line controller). There is a box on the market called a level 10, a few guys in Holland have them and swear by them, do a google.

Have fun, it has taken me 9 months to build mine to the way i want it.

i hadnt seen this saw thing, just been reading up about it and it looks wicked. Does anyone know if you can set it back to fully auto? Or is it always in "manual" mode.

 

I am the same, drive a manual van 1000 miles a week, so the auto is a nice change.

 

But i do despair at times when it wont change when it should or when it locks up on a corner, how stupid it can be at times!

i hadnt seen this saw thing, just been reading up about it and it looks wicked. Does anyone know if you can set it back to fully auto? Or is it always in "manual" mode.

 

I am the same, drive a manual van 1000 miles a week, so the auto is a nice change.

 

But i do despair at times when it wont change when it should or when it locks up on a corner, how stupid it can be at times!

 

BAZ,

 

great insight..

 

Definatley series one box..

New Shaft (to think about)

Oil cooler upgrade... (no brainer)...

New clutches and plates (most likley will see condition when removed most likley plates though)

 

 

Line Pressure.. most likley will get the valve block re-done/tuned/adjusted by a specialist.. I know when I'm beat therr.. :rofl:

 

"Shift at Will" SAWv2 (read my "wanted" thread ther is a video of it in action)..

 

I am defo getting this in April and is the main rerason why I want to beef up an auto box... One of the many great features of the set-up is you can control line preasures per gear.. (unlike the ALC) either using the new ATCU pre-loaded MAP (brain supplied) or by adding you own parameters as the box allows for this..)

 

A couple of guys on this forum have this set-up (AndyGP..?)

 

To answer your Q. Quavey... the SAWv2 system can be set "Manual" or "Auto" (using the original Nissan set-up or two other modes; Comfort and Sport) at any time even with your foot fuilly to the floor on the accelerator..

 

On manual setting you simply shift up/down using the F1 style paddles supplied and you fit onto the steering wheel.. press both paddles together to switch back to auto at any time as well

 

you can set the ECU to start in Manual or Auto mode when you turn the ignition key.. the options are terrific.. (you can download the instruction manual form the website)

 

As I said at the top of this thread ... this is the perfect middle ground for me given the silly miles I do in my Manual Beemer.. I'm not saying it is for everyone or anything near to driving a real manual.. just what will suite me..

 

Any more advice on uprating my autobx is appreciated... :cool: were on a roll now..

 

Might even make a pickture/video diary of the upgrade job.. (deleteing the fook ups obviously)

 

flikz

dont fancy doing two at the same time do you ;) hehe

how much does this saw system cost? where is it avail to buy?

a basic explanation of a auto box

 

http://www.familycar.com/Transmission.htm#Maintenance

>> how much does this saw system cost? where is it avail to buy?

 

http://www.ess-racing.com/

 

good system, although not as good as a full MT conversion, but closest you can get with the automatic transmission :)