If you're in doubt, why not use Nissan calipers instead of the Mazda ones?
I think i asked this before on old forums but i don't think i ever got a response.
I know you can put a spacer in a caliper to accomodate for a thicker caliper but does this lend to compromising the integrity of the caliper?
The caliper in question is the RX7 s4/5 caliper.
I was thinking that if you were to use the caliper in track day instances then the heat may cause the spacer to warp and not seal.
Am i just being paranoid?
Can it be done safely and reliably in all instances?
Is there a limit to the size spacer you can put in it (ie a 30mm rotor as opposed to the original 22mm thus requiring a 8mm spacer)?
Does it cause the caliper to loose its structural rigidity having 2 possible moving surfaces other than 1 between each caliper half?
I know cool1 has an rx7 caliper with a spacer in it but i just want to know if it can hold up under all circumstances?
cheers
Damien
If you're in doubt, why not use Nissan calipers instead of the Mazda ones?
i can't find nissan calipers at a price i am willing to pay. rx7 calipers sell for between 200 and 250 (yes i am aware there is a cost to put a spacer in).
thats what nissan calipers cost
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The spacer works perfectly fine!
Priced that out vis a vis just buying the correct caliper? You'll need to buy the material (similar thermal expansion coefficient as the caliper would be ideal), have it machined to suit, buy longer high tensile bolts to hold the caliper together, get longer pad locator pins made up and buy 4 new square sectioned O rings to adequately seal the communicating channel. I guarantee you'll come in cheaper buying Nissan calipers that suit!Originally Posted by barned01
I have done it for some Sumitomo 2 spots and it came out to a little over $100. They worked fine and there was no leakage but if there is a caliper that already suits and you don't already have free RX7calipers then I'd suggest you scrap the idea, save your pennies and buy the right calipers.
Nice work Shane, but I'd have to agree with GT on this issue Barnde01.....
You'll have no probs selling the RX7 items to put toward something more suitable.
You dont need all them new bits if your only spacing them a tad like I did.
The standards bolts are fine as in standard form you have spare thread, the locating pin issue can be solved by countersinking the caliper and the seals are only 20 something cents.
Also the nissan calipers may not work anyway as they are more bulky!
Doesn't that bulkiness also come with larger piston area? I understand the reasoning behind the RX7 calipers, but isn't their piston area below that even of an AE86?
I guess what i'm trying to say is, I'm with GT, I paid $220 delivered for a pair of R32 4-spots. If you can fit them, i'd use them.
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Now you've done it! All the drifto sprinter drivers are gonna think they have big brakes!
Oh and thats a no! Spend a while with a dremel and dump the unneeded alloy and its not so bulky anymore.Originally Posted by JustCallMeFrank
Damien needs to space it out by 8mm. He'll need everything I stated. Everywhere I have gone, square sectioned O rings are around $3 each. You could probably get away with plain old O rings but I'd hate to find out that I should have used the others when the brake pedal finds the floor at 160 kph.Originally Posted by barned01
Porsche did quite a few upgrades to their calipers by spacing them to suit thicker discs.
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8mm?? Fuck!! That wasn't there before! He must of edited it!!
Well if you need anymore of them o-rings i'll sell them to you for $1.50 eachOriginally Posted by gianttomato
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