Better Brakes U Need To Read This

[geocool69]

OK IM DOIN A FESABILITY STUDY INTO creating some sort of braking upgread usin oe toyota parts...

if anyone could help me with supplying any pics and info they know on what fits and what doesent that would be great..

as far as i know gt4/mr2 twin pots fit...if anyone knows about this uypgread could they fill me in

also ive herd of a supra conversion..some info and pics on this will be gretly appreceated..

my main problem is mounting brakets.. i need to see some so i can fabricate away.

it will be a piece of ***** once iv cleared this herdal

any of u interested in a brake upgread for your toymota will appreacet my end result

excuse the spellin

[toyotasera.co.uk]

What are the capabilities of the standard master cylinder? What is the input / output ratio of the servo? Once you start working out the maths you may find that whilst it may be possible to fit these big brakes, the maths may mean its not sensible to use them for safely reasons.

Dave Burwash says he has not braking problems with standard design of brakes. He is the owner of one of the most powerful UK Starlets (240bhp). Good brake fluid, braided hoses, uprated front discs (standard design but grooved and crossdrilled) and Pagid pads.

Does the ordinary Starlet have vented front discs?

[geocool69]

i understand what your saying but there is always room for improvement..

esepecialy brakes..

everyones preference is different .

just because dave says they r ok that makes it gospel..

im shure that the fornt brake assembly on all ep82-91s r the same and there r a number of upgreads usin oe toyota parts...

is there any info you know that would be helpful to what im trying to achive

[Starlet Nath]

I know this isn't really OEM parts but.....

If the front assembly on the Starlet and Corolla are the same, Why can't you utilise the TRD setup for the corolla?

Nath

[97paseo]

I can see what Andrews getting at - upgrading the disks & pads & hoses might be just as effective.

Would be cool to have monster Supra brakes behind the alloys though. B)

[toyotasera.co.uk]

What I'm saying is that the brakes are the single most important item on the car. They have to work each time, every time, 100% with no gremlins, faults or dramas. If they don't work, then there is no point the rest of the car working. Someone could loose their life because of a poorly planned brake upgrade.

The standard system is proven, but there were compromises made because of costs: These are: rubber brake hoses rather than stainless steel ones which don't flex as much. Machining work to the brake discs - cross drilling and grooves. More expensive brake fluid rather than the basic government standards and more expensive brake pad friction material.

This would give an increase in performance without changing Toyotas developed design.

If you wanted bigger brakes, then you should to compare all components against a common donor vehicle including master cylinder and servo. I'm thinking Corolla as that may have similar wheel sizes and not everyone wants to upgrade to 20" rims!

You would need to know the master cylinder diameter and travel and the ratio the servo gives of the Starlet and the donor car (say corolla) and the split front to rear

You would need to know the piston area of each caliper as well.

Once you know all these you can do the sums. I see if I can find the formulas to help do the maths. I can provide sample Sera brake parts for measurements if required.

Andrew

[Starlet Nath]

Andrew is right in what he is saying though....

At the moment, I am in the process of sorting out a rear beam conversion from an EP82 GT Turbo.

I have got black diamond sorting out a full set of 6 hoses, instead of only 4 which they were supplying to Fensport. No fault of Fensport's though!!!

Already have some Greenstuff pads on the front, gonna change them for Pagid and some 3G discs

Then finally, some really good brake fluid

That is definitely the way to go FIRST

[jdmparts_guru]

Before you are going to upgrade your brakes, you need to decide what rim sizes you are using or want to use.

Bigger calipers will have higher stopping power, but may not clear.

I have seen Yaris/Vitz that had their existing small 1-pot calipers replace by some larger 1-pot calipers from the EK9 (errr. an Honda :P ) . This will clear the stock rims.

If the Yaris/Vitz has 17" rims, then Subaru WRX 2-pot are also suitable after some modifications.

[geocool69]

your complicating matters...

im not on about creating an exteem braking system

just a formula that will improve the braking on the starlet by increasing the contact patch onto the disk...

this dosent necisarily meen huge disks but an upgread in caliper size from single pot to twin pot would be an essential advantage

now i dont know the technical jargon here but il use vauxhalls as an example.

it is a farily easy to swap the brakes forma heavy vectra v6 onto the nova for a very reasnable outlay.

its a cheap and chearful mod that improves braking force leaps and bounds usin oe vauxhall parts.

lm tryin to replicate this formula somehow.

[toyotasera.co.uk]

Smaller calipers provide better clamping force

Twin pot calipers is just spreading the same effort over a larger area.

Put it this way - which hurts more - someone standing on your foot in slippers or a stilletto heel?

I'll help where I can - but I don't want to be sued by the family of someone whose been crippled or killed as a result.

[geocool69]

alright andrew.. nither do i..

Twin pot calipers is just spreading the same effort over a larger area.

in turn would that not cause more friction duo to a bigger contact patch

if u read this and flick along throght the pages ull se what im trying to achive

hardcore ep

[toyotasera.co.uk]

Increase friction but less pressure. I'm not an expert, but I'm guessing this is may be giving with one hand but taking away with the other...

[geocool69]

do u know if the sera front brake assembly is the same as the eps by any chance.

[toyotasera.co.uk]

Sera master cylinders - generally shared with Starlet Turbo. Haven't stripped one down but all 4 I've got on the shelf are marked 13/16 (which could be the diameter in inches) (20.6mm)

Sera front calipers - 46.2mm outside diameter on piston - you can easily measure yours by pretending to change the brake pads.

Seras - vented front discs. Will measure tomorrow.

[geocool69]

excuse my ingorance but could u plz explain more to me about the master cylinder and its place in designing a good brake set up..

i have been speekaing to some sources in ausland and america and somehow i need to take this into consideration when doing this...

but i often see people fitting the biggest calipers and discs possible and overlooking the master cylinder...

any type of explanaiton would be welcome

[toyotasera.co.uk]

I've got a book at home. I'll read up so I can attempt to explain it properly.