lightened rotor's...weighed in!
#1
lightened rotor's...weighed in!
Here's a set of lightened rotors, done over here in NZ. I was asked a question as to how much they weigh in at, the front 4.23kg, & the rear 4.221kg.
These rotors have come out of a series 4, 13b 6 port, as to the original weight,I am unsure but was hoping some one out there might know. It would be interesting to see a comparsion between the weight's of the rotor's. If any one can help me with this or direct me to a page that can, that would be much appriciated.
These rotors have come out of a series 4, 13b 6 port, as to the original weight,I am unsure but was hoping some one out there might know. It would be interesting to see a comparsion between the weight's of the rotor's. If any one can help me with this or direct me to a page that can, that would be much appriciated.
#5
Lives on the Forum
My buddy has a set of lightened rotors from Mazda Motorsports. I wish I knew the weight but they have a LOT of material milled out. Half of the "holes" around the bearings are completely milled away as well as much of the face on both sides.
#7
OBEY YOUR MAZDA
I havent weighed these yet, just another example of a rotor
http://www.wankelkim.net/rx7/fb/PICT0870.JPG
http://www.wankelkim.net/rx7/fb/PICT0870.JPG
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#8
W. TX chirpin Monkey
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Anyone here running lightened rotors. I remember like 5 yrs ago, some guys were gonna redo a rebuild with them, but don't know if they ever went through with it.
#10
Will u do me a kindness?
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Originally Posted by Michael_Rudy
Kim do you know where i can get that rotor lightening done?? i can't find anyone that does it, thanks
#11
OBEY YOUR MAZDA
Originally Posted by Michael_Rudy
Kim do you know where i can get that rotor lightening done?? i can't find anyone that does it, thanks
#14
Try CLR Motorsports. They can have the rotors lightened and a bunch of other stuff to them as well. Located in Miami. Here is an image of what they did to Turbo II rotors. Lightened to 93 spec weight. 305.970.1774
#16
Senior Member
Originally Posted by rx7tt95
Try CLR Motorsports. They can have the rotors lightened and a bunch of other stuff to them as well. Located in Miami. Here is an image of what they did to Turbo II rotors. Lightened to 93 spec weight. 305.970.1774
Obviously lightening, and compression lowering as well... but keeping the "bathtub" area intact for flame control. Very interesting way to both lighten, and lower the compression.....
#19
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Originally Posted by SPiN Racing
Wow.. looks like thay changed the chamber size as well.. with those millings on the rotor face as well.
Obviously lightening, and compression lowering as well... but keeping the "bathtub" area intact for flame control. Very interesting way to both lighten, and lower the compression.....
Obviously lightening, and compression lowering as well... but keeping the "bathtub" area intact for flame control. Very interesting way to both lighten, and lower the compression.....
I think you'll find that the cuts on the rotor face are to change the effective port timing
#20
Originally Posted by riceburner1r2001
im running rx8 rotors in my all motor but cant remember how light they are and dont know if i can take anymore weight off them. if i can i will see if my friend rob at rotary shack can do it.
#21
Rotors keep you going
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Originally Posted by rx7tt95
Try CLR Motorsports. They can have the rotors lightened and a bunch of other stuff to them as well. Located in Miami. Here is an image of what they did to Turbo II rotors. Lightened to 93 spec weight. 305.970.1774
#23
formerly 93BlackFD
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Originally Posted by bolo_fd
why is that they only machine away the top of the rotor face and not both top and bottom?
#24
Bingo. FYI, CLR can do them to the 88-spec n/a rotors which have the higher comp ratio of the 93's but the thicker casting of the S4 TurboII rotors. Carlos still recommends the lower compression rotors.
Michel
Michel
#25
Senior Member
Originally Posted by Cheesy
I think you'll find that the cuts on the rotor face are to change the effective port timing
Unless they cut NEW side seals.. changed to the face of the rotor do Nothing..
The opening of the side.. or peripheral port is ONLY effected (In relation to the rotor) by the passage of any one of the seals.. Side, Apex, or Corner.
NOW... That being said.. bleh.. You might ger a TINY amount of better FLOW into the engine immediately after that port OPENS via the Side seal's passage..
BUT.. That being the case.. the improvement would be beyond minimal... Remember this has to be a forced induction engine.. And well.. I personally dont think it would give much inprovement to your air flow. YES... it MAY give some.. but not much.
Now... if it was N/A... and you were talking a motor that NEEDED that 1HP over the competitor.. well.... Yes. That TINY improvement multiplied by 30 other things you did to make the car faster=Winning front runner.
In a Turbo application... I think the compression lowering is Much more of a factor than the flow increase.... /shrug
Anyhow... Timing.. Nope. Seals control that... Unless they are RE_cut.. then nope.