RT40 Drum to disc conversion?

[Hazza]

Hey guys, just recently bought into the toyota family with the purchase of a 69 RT40 sedan.
My goal for the car is to keep everything original except for the performance. lol, obviously.
Thinking about maybe goin with an SR20det conversion but that will be sorted out later.
My first problem would be the brakes. Drums all round.
Can anyone point me in the right direction of how to change the front to discs?
The rear is not a problem as i have a hilux diff lined up.
Any info would be muchly appreciated.

Cheers for your time guys.
[email protected]

[gianttomato]

Use RT81 disc brakes. Bolt in the whole stub axle, use the master, booster and proportioning valve. You'll need to make up some new lines.

[allencr]

goal for the car is to keep everything original except for the performance.

Ther drums are just as good performance, except in water or racing and when the racing is more then autox gymkana drifting & drag, show & bling, otherwise they'll definitly can get overheated.
They might even be less weight - unsprung & rotating and will have a better E/parking brake!

[Hazza]

Ah beautiful. thats a real big help gianttomato, cheers.
now alls i have to do is source all that lol.
sorry allencr was meaning engine performance, my bad.

cheers for the help guys.
talk soon.

[gianttomato]

To be honest though, the RT81 discs brakes are small diameter solid discs with ordinary sliding calipers. I would use the hub and stub axle as a base for a more robust conversion, particularly with an SR20DET in mind.

[Hazza]

Yeah was actually thinking bout that today.
any brake upgrades you would reccommend?
Also i was wondering what some of you guys think about the sr20 into the RT40?
Would there maybe be a better conversion that anyone can think of?

cheers fellas.

[hosking1991]

Also i was wondering what some of you guys think about the sr20 into the RT40?
.

refer to my sig same apply s to all toyotas

Would there maybe be a better conversion that anyone can think of?

cheers fellas.

18rg would probley be the easiest. plenty of options for engines 4ag 3sg 1ggte but it really depends on your budget

[gianttomato]

Yeah was actually thinking bout that today.
any brake upgrades you would reccommend?
Also i was wondering what some of you guys think about the sr20 into the RT40?
Would there maybe be a better conversion that anyone can think of?

cheers fellas.

Use the RT81 stub axle and hub. The find a suitable ventilated rotor around 280 -290 mm (out of the DBA catalogue) and then make a dog bone to take a decent caliper.

As for the SR20, makes sense. I know the 5 speed box is a little bulky and when they go into a 1200 ute, they typically require transmission tunnel work. I'd imagine same deal here. Best bet is suck it and see.

[bnicho]

THe founder of the Corona Country forum has put an FJ20 into an RT40. There is also 20Valve 4AGE and 3TGTE conversions over there, but not a lot of details.

http://www.turbocreations.com/corona/

Cheers,

[tomvale13]

I love that site, many a drool haveth landed on my keyboard..

[Hazza]

Cheers for all the info guys, really appreciate it. Im only 18 an this is my first project car so i hope you guys dont mind if i pick ya brains from time to time lol, I am a 2nd year mech apprentice so i do understand what most of yas are saying haha.
Thanks again guys, will keep ya posted as it progress's an should hopefully have some pics up in here soon.
By the way would anyone maybe happen to have a spare RT81 stub axle lyin around or know where one is that someone wants to get rid of?

cheers fellas.

[gianttomato]

You're going to have to scour the wreckers. Occasionally a real shitter turns up on ebay. Beware, most RT81s have front drums.

[Hazza]

Hmmmm i think i know of a wrecker that has bin there since before my RT was brand new lol might check it out.
Is the RT81 stub axle the only one that will bolt straight up??

[bnicho]

I think the front brakes from a 69-71 RT72 Corona Mark II might also fit, but they are even rarer than RT81 in wreckers. GT, care to confirm?

[brett_celicacoupe]

where are you located?