I emailed Quaife america and they said they will have a differential ready in about 4 months. This was one thing I was worried about before getting my tc. I just had surgery so i can't go order mine just yet but now it's a sure thing i will be getting one! Sorry if this was posted already but i didn't see it and wanted to let you guys know.

yeah there are a number of posts on quaife's lsd.

its good that we have an approx time tho

repost

lock

I don't see in any other posts a time frame for this being released......

Anyone heard anything about potential pricing? I've seen various Quaife applications go from $500 to $1500, so it'd be nice to know what we'll have to pay for the tC's unit.

probably something around 800. but who knows.

I'd love to see a diff with lower gearing -- say 2100@70mph

I'd love to see a diff with lower gearing -- say 2100@70mph

differentials do not change the gearing of the car, they simply determine which wheel is getting more power.

I'd love to see a diff with lower gearing -- say 2100@70mph

differentials do not change the gearing of the car, they simply determine which wheel is getting more power.


not

I'd love to see a diff with lower gearing -- say 2100@70mph

differentials do not change the gearing of the car, they simply determine which wheel is getting more power.


not

ok let me rephrased what i said. i thought you were on the same page as the rest of us.
a LIMITED SLIP differential won't change the gear ratios.

http://www.houseofthud.com/differentials.htm#limited%20slip

they have a lot of information describing open, locking, and limited slip differentials.

I'd love to see a diff with lower gearing -- say 2100@70mph
Wouldn't that be nice? Performance would decrease, but gas milage would improve. Always a trade-off somewhere...

Give it time and ZPI will have there 6-speed and I'm sure that will be on thier minds while R&D is being done. Cruisin the highway at 3600-4000 rpm's is alittle for me.

ok let me rephrased what i said. i thought you were on the same page as the rest of us.
a LIMITED SLIP differential won't change the gear ratios.

http://www.houseofthud.com/differentials.htm#limited%20slip

they have a lot of information describing open, locking, and limited slip differentials.

the limited slip differential would replace the stock open differential. and since the design of the differential is what determines the final drive ratio, an LSD could be designed with a longer final drive.

ok let me rephrased what i said. i thought you were on the same page as the rest of us.
a LIMITED SLIP differential won't change the gear ratios.

http://www.houseofthud.com/differentials.htm#limited%20slip

they have a lot of information describing open, locking, and limited slip differentials.

the limited slip differential would replace the stock open differential. and since the design of the differential is what determines the final drive ratio, an LSD could be designed with a longer final drive.

i'm sorry guys, you're totally correct.
Whoops! lol

but thinking about that, wouldnt it change the ratio on all of your gears? and you would lose quite a bit of performance?

i have an auto tranny, and i personally would like to see shorter gears.

Give it time and ZPI will have there 6-speed and I'm sure that will be on thier minds while R&D is being done. Cruisin the highway at 3600-4000 rpm's is alittle for me.
You really think they'll make one? If so, I'd bet it'll be cost prohibitive for most people. I'd settle for a higher (lower numerically) 5th gear, if such were available and didn't cost too much to install.

Give it time and ZPI will have there 6-speed and I'm sure that will be on thier minds while R&D is being done. Cruisin the highway at 3600-4000 rpm's is alittle for me.
You really think they'll make one? If so, I'd bet it'll be cost prohibitive for most people. I'd settle for a higher (lower numerically) 5th gear, if such were available and didn't cost too much to install.

by my settling for a higher 5th gear, youre settling for 4 other higer gears as well...

Give it time and ZPI will have there 6-speed and I'm sure that will be on thier minds while R&D is being done. Cruisin the highway at 3600-4000 rpm's is alittle for me.
You really think they'll make one? If so, I'd bet it'll be cost prohibitive for most people. I'd settle for a higher (lower numerically) 5th gear, if such were available and didn't cost too much to install.

by my settling for a higher 5th gear, youre settling for 4 other higer gears as well...
No, I'm not. Changing the 5th gear out without changing the final drive gear would leave the other gear ratios the same.

Give it time and ZPI will have there 6-speed and I'm sure that will be on thier minds while R&D is being done. Cruisin the highway at 3600-4000 rpm's is alittle for me.
You really think they'll make one? If so, I'd bet it'll be cost prohibitive for most people. I'd settle for a higher (lower numerically) 5th gear, if such were available and didn't cost too much to install.

by my settling for a higher 5th gear, youre settling for 4 other higer gears as well...
No, I'm not. Changing the 5th gear out without changing the final drive gear would leave the other gear ratios the same.

then you would have to change one of your spider gears, and replacing the open differential with an LSD wouldnt do anything for you as far as gear ratios are concerned.

If you check out ZPI's website you will see where they are already working ont a 6-speed for the tC.

If you check out ZPI's website you will see where they are already working ont a 6-speed for the tC.

i believe that they are, but that is going to cost some big bucks.

Here's a good site to visit if someone wants to know how a differential works.

http://auto.howstuffworks.com/differential.htm
Also, a spider gear dosen't change gear ratio either. All a spider gear does is help to change the speed of one of the wheels. In order to change the 5th gear ratio, you would need to change the 5th speed gear. You would have to find one made for the same transmission as the tC.
Does anyone know what other toyota vehicles use the tC manual trans?

Here's a good site to visit if someone wants to know how a differential works.

http://auto.howstuffworks.com/differential.htm
Also, a spider gear dosen't change gear ratio either. All a spider gear does is help to change the speed of one of the wheels. In order to change the 5th gear ratio, you would need to change the 5th speed gear. You would have to find one made for the same transmission as the tC.
Does anyone know what other toyota vehicles use the tC manual trans?


The "just change out 5th gear" idea is pretty appealing to me, although I think 1st is too low anyway. I just want to go the cheapest route. My #1 concern is to get the tach down about 800 rpm when highway crusing. Acceleration/LSD/etc are all secondary to me. I'd also love to keep the factory warranty when doing it -- say, for example if a dealer could get the different 5th gear and change it out for $750 or so.

Say i get the supercharger... will it be easy to break the tires loose with 200hp? I plan on getting headers, pulley and other stuff. Actually i should probably order my car first...

Why did this get moved to N/A forum?

Say i get the supercharger... will it be easy to break the tires loose with 200hp? I plan on getting headers, pulley and other stuff. Actually i should probably order my car first...

Why did this get moved to N/A forum?

youll break lose in every gear except 4th from what ive heard. 1st is a joke, 2nd youll still peel, and 3rd youll chirp.

The discussion here about replacing gears for speed is NA talk. would you like me to move it to suspension and handeling?

I'd say put it in suspension/handling. As soon as i get my check tuesday i'm heading up to the dealer and order my car, by the time i get it i may have enough for the supercharger. I can only hope Quaife will make a good diff. for this car. This will be my first decent horsepowered FWD car. I've always had posi rear ended v8s.

okey doke moving to suspension

Hello,
We are producing a differential for the TC, E350 gearbox.
The part number is 94.309.180.
Cost is $1,295.00 each.
Availability will be first week in May.
Due to is popularity, if you will need one from our first batch, I recomend
that you send your PO as soon as possible, as we have had already many
inquiries.
Sincerely.
Rafael Santiago.
Quaife America.


Hope this helps.

:shock:

Wow. Same gear ratio I assume, or are there options?

yup, that quote hes got is correct
got that same reply from them.....ordering a few sets for my dealer to stock

tighttt

Wow. Same gear ratio I assume, or are there options?
The LSD does not affect your ratios, these are completely separate aspects of the tranny.