 Cross drilled rear rotors |
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| Harpo |
 Jan 17 2012, 07:44 AM
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#1
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Senior Member  Group: Members Posts: 1,304 Joined: 21-August 11 From: Motor City aka Detroit Member No.: 13,469 Region Association: None  |
Is anyone using cross drilled rotors on the rear?
Thanks David |
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| dlestep |
Jan 17 2012, 10:56 AM
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#2
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I am smilin'... Group: Members Posts: 890 Joined: 15-January 08 From: Sunrise Florida Member No.: 8,573 Region Association: South East States |
Drilling started with the 550 and 356 GT drums and went through the 908 and 917 as a weight savings move, nothing more.
If you are going to run cross-drilled rotors, the entries and exits have to be countersunk or "break edges at 30 thousands." The holes should not be any closer than three diameters in a line or arc. Slotting in my eyes, is worse because it has two surfaces. The floor of the slot removes too much material. If the vertical wall is not radiused it will create stress risers as well and will exhibit a higher temperature than the upper pad contact surface, and temperatures will not be uniformly distributed. |
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Posts in this topic
Harpo Cross drilled rear rotors Jan 17 2012, 07:44 AM
9146986 Only if they are vented rotors. You don't cro... Jan 17 2012, 07:47 AM nsr-jamie The Automotion catalog sells or sold stock 914 sol... Jan 17 2012, 09:12 AM underthetire And they like too crack between the holes. Grooved... Jan 17 2012, 09:54 AM SLITS Unless you are into serious racing, you are wastin... Jan 17 2012, 10:16 AM Elliot Cannon I've had cross drilled solid rotors on my car ... Jan 17 2012, 10:35 AM sean_v8_914 they deliver on the street cool scene. yellow cali... Jan 17 2012, 10:40 AM Harpo Thanks for the advise. I will save my money
David Jan 17 2012, 11:19 AM Drums66 .....I used them for a long while myself :idea:
... Jan 17 2012, 07:50 PM Chris Hamilton On my 4-lug car they look like this
http://www.91... Jan 17 2012, 09:14 PM
NORD
On my 4-lug car they look like this
http://www.9... Jan 17 2012, 11:26 PM Eric_Shea
Three reasons... none of which is really weight.... Jan 17 2012, 09:54 PM stugray
This exactly why they will not allow drilled rot... Jan 17 2012, 11:43 PM |
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