AP1 calipers 300mm discs on ek4?


The other option would be to make up a 2 piece disk setup with aluminium bells. Would be a bit more expensive but it would look very :cool: Plus it'll be quite a bit lighter than a cast disk setup

Cost would be somewhere between £4-450... :)
 
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No, the S2k rotor's HAT is not wide enough, that cannot be machined.

You're best bet is to get a camber kit and switch to CRV knuckles. This will allow you to use the CRV bearings and....press out the CRV hubs. Then you press in the RSX front hubs (base model, the type-S use a 36mm axle and the base uses the 32mm like for the D and B series axles sans the DC2R from japan). This is a smaller diameter 5x114.3 hub by its centerbore and outer diameter. You can now run the S2k rotor...but its too short and the spoon monoblock calipers won't fit. With the monoblocs and this RSX hub, you now run the RSX Type-S rotor with those calipers.
 
Some really good information on braking there from FreakyPart and Kozy.

Really know yer stuff.

I fitted my EK9 with ATR 300mm discs and twin Piston setup + Yellow stuff pads
following dunsy who did so and has an extensive thread on here about it if you search.
Long and the short of it is, id have to say that its the best upgrade money can buy if you already have 16ins wheels to give clearance. Massive improvement on standard, all be it that I upgraded pads. Recommend it to anyone, bolted straight on, no issues.
If you can source calipers and carriers go for it, you wont regret it
 
EK9 Rookie! said:
Some really good information on braking there from FreakyPart and Kozy.

Really know yer stuff.

I fitted my EK9 with ATR 300mm discs and twin Piston setup + Yellow stuff pads
following dunsy who did so and has an extensive thread on here about it if you search.
Long and the short of it is, id have to say that its the best upgrade money can buy if you already have 16ins wheels to give clearance. Massive improvement on standard, all be it that I upgraded pads. Recommend it to anyone, bolted straight on, no issues.
If you can source calipers and carriers go for it, you wont regret it
Click to expand...

Oh.. I dont know. I guess it depends on your budget :lol:
Also worth considering what you want from the car. Driving around town and the occasional spirited drive around the B roads shouldn't cause the ATR setup any problems, but give it a day out on a track and you'll start to find the limits.
 
To answer the original posters question without digressing ;

-Yes the S2000 calipers fit
-No, the discs wont fit the Ek4 hubs even when redrilled to 4x100-the offset is wrong

To do this, you need to use EP3 discs, redrilled to 4x100. The caliper will need a pair of 0.75mm shims between the knuckle and caliper carrier to get the caliper central on the disc, otherwise you can shave the inside of the carrier to get the clearance.

Good setup for not a lot of money, IMO.
 
When you say a 0.75mm shim, do you mean a 7.5mm (or 7.4mm to be precise)? As the EP3 disks are 47mm and the S2000 are 39.6mm offsets.

The shim is something very easily made up if people wanted them doing, as well as getting the disks redrilled. If there's interest I can get the costs from my engineer, either from customer supplied disks or supplied by us
 
Just trying to get my head around how that would work (not doubting you btw :) )
I can only guess the EK hub mount points for the caliper sits at a different position (deeper?) in relation to the disk?
 
Ive done it dozens of times mate, my upgrade of choice now that good condition 300mm calipers are easier to find than 282mm ones :)
 
Oh, and if you want to upgrade EK9 hubs to run EP3 setup you need to either

A) put the drive flange on the lathe and take a few mm off the outer diameter, or, use an EP3 drivelange

AND

B) open up the centre bore of the EP3 disc.

Easier to do the ATR upgrade tbh, disc goes straight on.
 
I think modifying the centrebore of the disk would be the preferred choice tbh, that way it's much easier to put back to standard, or take a different upgrade path in the future. Plus you then have to start playing with wheel spigots which add to the cost of the upgrade.
 
you need to alter the drive flange as well as opening up the centre bore of the disc to fit EP3 discs. It doesnt alter the spigot the wheel sits on though, it remains the same diameter.
 
PerformanceTek said:
Ive done it dozens of times mate, my upgrade of choice now that good condition 300mm calipers are easier to find than 282mm ones :)
Click to expand...

How would you rate them against Ek9/Dc2 calipers or prelude upgrade? Thanks for the info!
 
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