BOOSTED FD BUILD.

boosted · February 21, 2016, 01:57:46 PM

got the rears done finally, rear brakes bleed.

boosted · February 21, 2016, 06:42:34 PM

Started on the fronts which i thought would be a easy peasy...but alas no massive corrosion. bell to disc bolts all ceased, currently soaking but maybe needed bells aswell. disc just crumbled undoing bolt. luckily calipers all sweet pistons all free.

bolts are having a soak in pentrating oil...but bells look awful.
arb's done.

Grant Monkhouse · February 21, 2016, 07:49:15 PM

Need some elbow grease on them if your re using them

boosted · February 21, 2016, 07:51:47 PM

I got new bolts with the discs. existing are solid. Just have to see if they come out without damaging the bells. The anodising gone...but thats what satin black spray paint for.

Grant Monkhouse · February 21, 2016, 07:52:32 PM

Is there any advantage to having two piece discs?

boosted · February 21, 2016, 07:56:15 PM

Heat i suppose to isolate from hub? Lightweight bells are alloy? Manufacture...less steel and machining. ? Off the top of my head....you only torque to 10 to 15 nm so float as well. Maybe.

Grant Monkhouse · February 21, 2016, 07:57:31 PM

How much lighter would they be? Helps with unsprung weight?

clive · February 21, 2016, 07:58:58 PM

Weight and Heat Dissipation,

The separate alloy bell does not retain the heat the way the all in one cast iron bell does, allowing the Disc ring to dissipate heat faster.

RX-8 Disc Weight Comparison
One-piece 12.3 lbs.
Two-piece 9.8 lbs.
Weight Savings: 2.5 lbs.

boosted · February 21, 2016, 07:59:01 PM

Cailpers weigh nothing....discs are heavy....suspects bells will lightweight. Gonna see what price new are save fookin about.
Last job b4 mot.

Grant Monkhouse · February 21, 2016, 08:01:10 PM

Something Iv never looked into... What advatantage is there too having less weight on your wheels?? Brakes an tyres etc? Do it help accelerate ?? I don't understand it fully

boosted · February 21, 2016, 08:01:40 PM

That makes sense Clive...first time ive had big brakes like this!
So the low torque joining the disc to the bell is for what reason?

boosted · February 21, 2016, 08:05:07 PM

And Clive these are J hook groves in them....C shape groove which way should they face...
Pads ive gone for EBC blue stuff endurance. Rears where specially made for me !

clive · February 21, 2016, 08:22:16 PM

Grant, simple answer is the lighter the un-sprung weight is, the easier damper can control the suspension making the damper more able to control the suspension weight while its waggling up and down more effectively.

People often overlook the role of the damper, not fully understanding that its the effectiveness of the damper and that it keeps the tyre in contact with the ground.

To give you an idea how dampers can make a difference, we used to sell JRZ suspension for Porsche Super Cup cars at 5K a set, but these were reckoned to be worth 1.5 and maybe 2 seconds a lap, which is huge in a one make series!

Jon, the shape of the J will read like you have written the J on the disc, same with the C shape

Grant Monkhouse · February 21, 2016, 08:24:28 PM

Ahh thanks clive

so filling the wheels with helium will help

lol

clive · February 21, 2016, 08:27:12 PM

Quote from: Grant Monkhouse on February 21, 2016, 08:24:28 PM
Ahh thanks clive so filling the wheels with helium will helplol

Save some for your shoes as well and you will feel like your "Walking on Air"

, thankyou this thread was getting far too serious