Here's a link to the build thread on Ratsun. A bit hard to weed through all the info and posts.
https://ratsun.net/topic/10125-410411-disc-brake-mod/page/5/
https://ratsun.net/topic/10125-410411-disc-brake-mod/page/5/
***** ATTENTION *****
We use sleeves over the studs to center the rotor instead of machining the hub. The rotor needs to have the center hole opened up to 3" to clear the hub. If you can get that done locally, great, if not, contact us and we can do it.
We can now machine the rotors with new lug holes that eliminate the need for the stud sleeves. New rotors machined and shipped(US only)
are $115/set. Due to the cost of shipping and weight limitations, stud sleeves will still be used on overseas orders.
**************************************************************************************
These pics show the bracket with a glass bead finish which is $10 extra. The video at the bottom of the page shows the typical finish.
We use sleeves over the studs to center the rotor instead of machining the hub. The rotor needs to have the center hole opened up to 3" to clear the hub. If you can get that done locally, great, if not, contact us and we can do it.
We can now machine the rotors with new lug holes that eliminate the need for the stud sleeves. New rotors machined and shipped(US only)
are $115/set. Due to the cost of shipping and weight limitations, stud sleeves will still be used on overseas orders.
**************************************************************************************
These pics show the bracket with a glass bead finish which is $10 extra. The video at the bottom of the page shows the typical finish.
*****The brake hoses to be used are '87 Nissan D21 Hardbody lines.
Master cylinder upgrade
It is highly recommended that you upgrade the brake master cylinder from the single reservoir/circuit unit to a dual reservoir/circuit unit. The two most popular options are the '78 620 m/c and the '78 280z m/c. Both are disc/drum biased. The 620 unit is typically a 13/16" bore with the bleeder valves on the inboard side. The 280z unit is typically 7/8" bore with the bleeder valves on the outboard side. The brake and clutch master cylinders on the 411 should be far enough apart that the valves have clearance.
The '78 620 m/c as found on Rockauto.com
The '78 620 m/c as found on Rockauto.com
The '78 280z m/c as found on Rockauto.com
More info about the m/c upgrade can be found in the build thread listed at the top of the page. This link will take you to the m/c info on page 6.
https://ratsun.net/topic/10125-410411-disc-brake-mod/?do=findComment&comment=182688
https://ratsun.net/topic/10125-410411-disc-brake-mod/?do=findComment&comment=182688
Rotors - machined
The center holes can be opened up to 3" and new lug holes will be drilled/bored to better fit the stock studs. The clip is just a quick peak at the machining. WE DO NOT OFFER THIS MACHINING ANYMORE.