B24
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RE: SW20 track car back on track
2011/02/01 22:10:55
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quote:
Originally posted by evo65m
quote:
Originally posted by B24
May event get a little closer to the black nugget at WTAC..
 1.39's will be needed
Im sure if Rick Shaw has a run it will be closer to that speed than I will ever be.. Im interested in gettting closer to the other club driver!!
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evo65m
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RE: SW20 track car back on track
2011/02/01 22:14:04
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No that should be my time the other Driver will be in pro so expect a 1.34 or lower[:u]
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B24
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RE: SW20 track car back on track
2011/02/01 22:26:46
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quote:
Originally posted by MANDALAY
Also are you aware that they use a wide band knock sensor over in Japan ?
If you look at the block where the tapped thread for the Knock sensor is go to the right and you will find the same shape on the block.
They also tap another thread into the block and run 2 knock sensors . sshhhhh :)
??? Really dont understand the point...but what help do you need with brakes?
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B24
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RE: SW20 track car back on track
2011/02/01 22:28:05
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quote:
Originally posted by evo65m
No that should be my time the other Driver will be in pro so expect a 1.34 or lower[:u]
MMM, might just go and have a good time and see what happens. Well that was the plan anyhow. Are you back in your car soon?
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evo65m
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RE: SW20 track car back on track
2011/02/01 22:34:23
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Yeh towards the end of feb onwards but mainly mid week and some weekends.
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cogs
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RE: SW20 track car back on track
2011/02/01 23:31:51
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quote:
Originally posted by MANDALAY
What brand are the calipers front and rotors ?
Also do you still have the OEM booster and proportionating valve ?
Mandalay, have a look at page 16 of this thread - should answer some of your questions!
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B24
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RE: SW20 track car back on track
2011/03/01 10:19:15
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Thanks cogs. Calipers are Alcon 'C'spec calipers as used by ALMS and BTCC endurance racing. Rotors are Alcon with rotor hats and brackets of my own design. An engineer that EVO65 introduced to me provided all the fabrication. Drawings are available. I dont run OEM or proportioning valve as it wasnt up to the task. I could have gone with wilwood óverhead hung' pedals but the **** factor of floor mounted pedals was too much too resist! But after using the floor mount they absolutely leave anything else for dead. No comparison at all. It has cable adjustable bias which is pretty handy once sorted. If it rains you can set for the conditions. The guys at Competition components helped out with finding the correct size calipers to suit my application and budget. If I had more cash I would have pick up these puppies http://www.competitioncomponents.com/partimages/DSC09883.JPG , but the cost was excessive. They also provided a formula and chart to sort out master cylinder sizing to match the calipers. www.carpartsinc.com supplied the remote mater cylinders for a song as well as other components in the build including braided line. Powerplay imports supply the ELF brake fluid at the best price in Sydney. Earls provided the fittings to adapt the imperial caliper/lines to the metric steel lines found on the MR2. I still have not exploited the system at all, but hope to this year instead of pulling it aprt every 5 mins.. Cheers Steve
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MCT_MR2
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RE: SW20 track car back on track
2011/01/06 21:37:14
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I beg to differ on the elf brake fluid.
My work has tested with elf, GS610, Ap dot 5.1, motul RBF600, and castrol SRF.
We have found that the castrol SRF is the most resistant to fade, and gave the most consistant pedal.
But be warned, as the castrol SRF is very very expensive.
GS610 is a lot cheaper alternative, but doesn't hold out as well (3 hot laps of winton, and we get fade.)
And MANALDAY, if you were at all considering the brake setup and running a pedal box, floor mount is illegal in road cars, and dangerous if your in an accident and wearing a lap sash seat belt (they are designed for use with race buckets and harnesses for a reason.)
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B24
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RE: SW20 track car back on track
2011/01/07 20:23:23
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quote:
Originally posted by MCT_MR2
I beg to differ on the elf brake fluid.
My work has tested with elf, GS610, Ap dot 5.1, motul RBF600, and castrol SRF.
We have found that the castrol SRF is the most resistant to fade, and gave the most consistant pedal.
But be warned, as the castrol SRF is very very expensive.
GS610 is a lot cheaper alternative, but doesn't hold out as well (3 hot laps of winton, and we get fade.)
And MANALDAY, if you were at all considering the brake setup and running a pedal box, floor mount is illegal in road cars, and dangerous if your in an accident and wearing a lap sash seat belt (they are designed for use with race buckets and harnesses for a reason.)
Thanks for the feedback on the brake fluid MCT as it always helps hearing from people testing the products available. The ELF fluid is the higher end product which is used within the rally circuit with positive results so Im happy to spend more time with this product.I wont really know how well it stands up until I get some serious time at the wheel of the car. How much is the SRF? As you well know the fluid is only part of the puzzle with calipers,ducting, rotors verses track conditions, geometry setting, tyres and the nut behind the wheel making up the most part of the rest of the puzzle. Purhaps we can meet up for a track day at Winton some time. Would like to have a run there as its a great little track.
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MCT_MR2
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RE: SW20 track car back on track
2011/01/08 01:10:40
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SRF is around $100 a litre trade price.
One big thing with ducting, particularily in you have the deflector mounted next to the hub is to check you are getting even cooling across the rotor. Next time after you come in after a track session, if you have an IR temp gun, measure the inner and outer faces of the disc, to check if they roughly in the same temp region.
Poorly setup ducts will direct too much air onto the face of the inner side of the disc, instead of into the hat so it can cool through the vents. one side of the disc been too cold will cause severely uneven pad wear, and reduced stopping efficency.
We run a variety of different setups, from stock brembo f50 calipers with project mu rotors, right up to AP, Alcon, and Brembo forged setups. A cheap way of stopping heat transfer from the pads to the fluid if you calipers don't have vented or titanium pistons is to track down a set of titanium shims. They can be had for a little over $100 dollars, and can be had for most common pad shapes.
If your at superlap this year, i might see you up there, we are entering three evo's this year, which should be good.
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roryh
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RE: SW20 track car back on track
2011/01/08 02:09:23
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SRF is indeed the best - but please explain to readers why it cannot be dropped straight into any braking system...
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2hardtop
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RE: SW20 track car back on track
2011/01/08 08:28:11
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Because of the S in SRF
Silicone Racing Fluid
It adversely affects the rubber components
leading to brake failure.
ONLY systems designed for DOT5 should use it.
For MR2s use DOT3,DOT4 OR DOT5.1
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kameleon
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RE: SW20 track car back on track
2011/01/08 13:33:53
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MCT MR2 you work for toyota but mention evos? whats your affiliation with racing these cars. Chasers motorworks?
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MCT_MR2
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RE: SW20 track car back on track
2011/01/08 15:36:19
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quote:
Originally posted by kameleon
MCT MR2 you work for toyota but mention evos? whats your affiliation with racing these cars. Chasers motorworks?
I no longer work for Toyota Trav. As you would know from BMW, often the worst part of being a mechanic is the customers. I got fed up with the same poo poo, plus a bit of change in management, and i decided to move on. What makes you think Chasers??
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B24
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RE: SW20 track car back on track
2011/01/08 23:19:42
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$100 a litre is OK. Same price as ELF($48 per 500ml).
I run the Alcon/wilwood race spec superlites for the caliper department and tilton master cylinders so they may be OK. I will check to make sure.
As for the titanium shims, I will look into this at some stage too. I think it has titanium pistons but will also have to check on this too.
The supplier of the brakes also noted the ducting and location which is as you have stated. I picked up some 3" ducting but will not fit so have to source 2" to make it through the gaps. Another thing on the list..
Thanks for the advise
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