Which rotors to use on Build?
#1
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Which rotors to use on Build?
Im still tring to complete my rebuild. turns out when my rear plate cracked it also overheated the rotor. now my apex seals don't fit in the slots freely. therefore what would be the best rotors to put back in the engine. heres the build.
-Full Bridgeport
-planning on running big turbo (hx50, gt40-42, hx52)
-haltech
-s5 housing
-s5 rear plate
-atkins rebuild kit (RA seals)
so what would be the best used rotors to go with. S4, S5, FD, NAs or T2
-Full Bridgeport
-planning on running big turbo (hx50, gt40-42, hx52)
-haltech
-s5 housing
-s5 rear plate
-atkins rebuild kit (RA seals)
so what would be the best used rotors to go with. S4, S5, FD, NAs or T2
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Idk exactly what the front rotor is . The guy I bought the car from built it. Bc and so far hes been sketchy. So I have been restoring car. If theres a way to tell what rotors I have . That would be awesome.. he said supposely tgey are tII s5 rotors but idk.
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Cool mine are not machined.. they are rough.. so that makes sense consodering my car is a s4. Why would you go with s4 t2 rotors. Anything special. Im tring to make over 500hp.
#7
Rotary Power
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They're stronger, and since they're heavier its better for your bearings, and being lower compression its easier to run high amounts of boost.
S4 rotors are more durable due to the additional material that wasn't shaved off. S5 rotors are better for engine response.
Which means less chance for the rotor to get dented during detonation, on the other hand you need to run more boost to get power since they're lower compression and the more boost you run the higher the chances are for detonation.
S4 rotors are more durable due to the additional material that wasn't shaved off. S5 rotors are better for engine response.
Which means less chance for the rotor to get dented during detonation, on the other hand you need to run more boost to get power since they're lower compression and the more boost you run the higher the chances are for detonation.
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#12
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I hear s4 na rotors (9.4:1) and E85 are the way to go. You can make great power at moderate boost levels. I run s4 na rotors in my turbo motor at 8-9 psi and i love it. I dont use E85 but plan to in the future for more reliability and power.
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#17
Shooting for 500
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It appears nobody has mentioned the weight codes yet. The rotors will have a, b, c, d, of e stamped on the side of them. A is the heaviest, e is the lightest. It is best to have matching weights, but you can be one off and be ok.
Make sure to take this into account when buying your replacement rotor.
Make sure to take this into account when buying your replacement rotor.
#22
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Example - rotor 1 letter D. Rotor 2 can use C,D, or E
The weight difference between each letter is roughly half a pound per letter up is less , per letter down is more.
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I got the same weight rotor.. and yes I want to run crazy boost.. so I guess the lower compression and a full bridgy + big turbo.. should make nice numbers
#24
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It doesn't have to be the same weight it can be one letter off up or down but I wouldn't go any more than that.
Example - rotor 1 letter D. Rotor 2 can use C,D, or E
The weight difference between each letter is roughly half a pound per letter up is less , per letter down is more.
Example - rotor 1 letter D. Rotor 2 can use C,D, or E
The weight difference between each letter is roughly half a pound per letter up is less , per letter down is more.