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nusevad

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Posts posted by nusevad

    Silvermine Motors Rear Disc Brake Kit is great!

    in Brakes, Wheels, Suspension and Chassis

    Posted · Edited by nusevad

    Hey everyone, first off thank you for answering all my previous suspension questions.

     

    I was finally able to get my suspension/brake done this past weekend.

     

    Silvermine motors rear disc brake setup was sooo worth it! Some people said it affects braking, lock up, blah blah but i found for street driving they were much better than my old and worn drum brakes.

     

    My buddy who helped install it for me said it was perfect and one of the easiest conversions to install. The E-brake was easy to hookup as well!

     

    The caliper fits perfectly in my 15in Atara Racing wheel so no worries on fitment.

     

    I highly recommend this setup for anyone looking to replace their rear drums.

     

    Cheers!

    post-47516-0-96212900-1445701330_thumb.jpg

    BEST MODEL TO INVEST IN? 240, 260, 280

    in S30 Series - 240z, 260z, 280z

    Posted

    I bought my 240Z because I think the look and style is beautiful, its reliable, affordable to maintain, and a blast to drive. The appreciation is just the icing on the cake, dont buy a car to try to make money because you may be very disappointed in the end.

     

    Buy an enthusiast auto because you love it and the experience and fun you get in return is worth more than monetary compensation. 

    Opinions/Thoughts on this brake setup?

    in Brakes, Wheels, Suspension and Chassis

    Posted · Edited by nusevad

    Thanks for the input everyone, especially Miles for going through so many setups so we have this knowledge!

     

    I apologize but I forgot to mention that my Z will not be participating in autoX or tracking this year, I would like to next year but this year is mainly for maintenance (just bought Z last November) and improve/replace old or obsolete components, basically resto-mod this summer and by next summer I would have enough saved up for the AZcar brakes and participate in events.  

     

    In that respect, for boulevard cruising and driving to local meets to meet with other enthusists, would Toyota Calipers + 280zx + 15/16 MC be sufficient and safe for highway cruising? No canyon carving, no drag racing, just semi-spirited drives and cruising

     

    I searched and found this post by Seattlejester, can anyone confirm these bias #s?  Looks like the 4x4 + 280zx isnt THAT bad....

     

    So to calculate ratio Moments...

     

    Front Bias = (Moment of Front / (Moment of Front + Moment of Rear)) x 100.

    Rear Bias = (Moment of Rear/ (Moment of Front + Moment of Rear)) x 100.

     

    Moment Toyota 4x4 front caliper = 2360mm^2 x Line pressure x (135.5mm-21.5mm) = 269040mm^3 x line pressure (in kg/mm^2)

    Moment Toyota 4-runner = 2904mm^2 x Line pressure x (135.5mm-21.5mm) = 331056mm^3 x line pressure

     

    Moment Nissan 280zx = 1452mm^2 x Line pressure x (142.5mm - 21.5mm) = 175692mm^3 x line pressure

    Moment Nissan 240sx = 1134mm^2 x Line pressure x (142.5mm - 19mm) = 140049mm^3 x line pressure

     

    The ratio removes line pressure from the equation assuming same line pressure goes to front and back (for our very simple calculation)

     

    So we end up with biases of:

    Toyota vented 4-runner and Nissan 240sx rear caliper setup

    70%:30%

    Toyota vented 4-runner and Nissan 280zx rear caliper setup

    65%:35%

    Toyota solid 4x4 and Nissan 240sx rear caliper setup

    66%:34%

    Toyota solid 4x4 and Nissan 280zx rear caliper setup

    60.5%/39.5%

    Opinions/Thoughts on this brake setup?

    in Brakes, Wheels, Suspension and Chassis

    Posted · Edited by nusevad

    I ran stock fronts with late 280zx rears for a while. The performance really wasn't any different from the stock drums but maintenance was far easier. If I wouldn't have decided to start running HPDEs I would probably still be running this combo

     

    Oh ok, the late 280zx rear is similar to 79-81 zx rear? Either way as long as it makes maintenance easier and not give me really bad bias with stock fronts I might just leave the stock fronts. 

     

    Do i need to upgrade to a 15/16 MC for the 280zx rear calipers? 

    Opinions/Thoughts on this brake setup?

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Ok, so i searched and read for the last 3 hours on different brake "upgrades"

     

    Seems like general consensus is that toyo 4x4 with any rear brake calipers will give too much bias to the front and throw off brake balance.  Not much of a solution was found after reading through the threads of resoling that issue than "leave the rear drums alone" 

     

    Here is my situation.  I bought a complete suspension+brake setup from an enthusiast.  Basically I have a 2nd suspension setup separate from the stock suspension on my Z.  

     

    The fronts are toyota 4x4 with coilovers, "power" slotted rotors, new bears, new poly bush, powercoated control arms, etc.  

     

    The rears are early 280zx calipers with Jim Cook brackets with "power" slotted rotors on coilovers and new everything like the front.

     

    My current stock suspension has some issues as it pulls to the left when I brake, i suspect a seized front passenger caliper  and my stock 7/8 brake master cylinder COULD be bad as the reservoir closet to booster is almost dry and dirty.  

     

    My question is, has anyone used stock front calipers with either a 280zx rear calipers, 240zx, etc? If so, how do you like it?  I would really like to use the rear setup I bought as the install is super easy, all i have to do is drop my stock suspension and bolt in the one i just bought.  

     

    If one of my stock calipers is FUBAR or MC is fubar, I am considering installing a 15/16 MC and use the 4x4 toyota calipers. 

     

    What do you guys think?? 

    Higher spring rate in front than rear?

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Thanks John! So for a Z with an LS swap, with plans for lots of autox and 1-3 track days a year, would it be better for me to move my heavier springs from the rear to the front?

     

    From what i read from the links and searching, it could be better to do that as it will reduce oversteer and make the car more manageable especially if you are putting down big power coming out of corners.  For AutoX im not sure if it will be ahuge difference as its alot of slalom type movement, it might require more steering input?

     

     

    Also quick question and i searched, for the 15/16 brake master cylinder, i have calipers all around, do i need to remove the spring thats attached to the check value too? or just remove the check value and leave the spring in?

    Early 1971 240z Master Brake Cylinder Question

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Why do you need a 15/16 MBC?  If you have stock brakes the 15/16 MBC will increase the brake pedal force required to stop the car. That is, your car will not stop well.

     

    Recommend that you research the 15/16 MBC swap and the brake line issue before doing anything. There has been a lot written about this subject in the brake section.

     

     

    sorry, forgot to mention Id like to upgrade my rear drums to calipers and bigger front calipers as well. Also the NOS part for a early 240z MBC is $300, compared to $120 for a 15/16.  

    Early 1971 240z Master Brake Cylinder Question

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Hi everyone, I have an early 1971 240Z with the F -  R brake master cylinder.  Its dying and either needs to be replaced,upgraded, or rebuilt.

     

    I would like to get it upgraded to the 15/16 MBC.  I understand that I need to re-route my brake lines to fit the reversed newer MBC, my question is how hard is it to re-route the brake lines? Does it require bending or need a new brake line for length?

     

    Thanks!

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