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Inexpensive effective rear disc conversion for 240z

Guest zmepro

By Guest zmepro
in Brakes, Wheels, Suspension and Chassis

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fl327 Newbie

fl327

Posted
Posted

you can do that conversion for about 200 total for the four piston fronts.

Get the calipers from your local auto supply store, someone correct me if im wrong but its the 80-84 toyota trucks with the 2.4 4wd right? use your stockers for a core, the parts guy cant tell usually. you can either buy the rubber lines from the same store at the same time, or go stainless steel all around from MSA for 70.00- I found that to be the best deal for ss lines.

The rears are a little more expensive using the 240sx caliper, 84 NA 300zx rear rotors, and a bracket from Ross C at Modern Motorsports

depending on where you source the rear brakes and rotors will change how much that would be.

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260DET Newbie

260DET

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Any front conversion using the stock solid rotors is a waste of money IMHO. You need a larger, ventilated rotor to make a real difference.

 

Better off making sure that the present setup is in good condition and saving up for a proper upgrade.:)

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Guest zmepro

Guest zmepro

Posted
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well... the fact of the matter is, I don't have to pay for it... :) my dad said he would pay for new brakes. are the ones on my link any good or should I look elseware? my rear drums are jacked up so i kinda need to replace them, anyone have a complete kit or do i have to piece it together?

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auxilary Newbie

auxilary

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Posted

like len said, if all you're going to do is put in 4 piston calipers with solid rotors, you can get the rebuilt calipers from napa for about 100-120 for both. add pads and the custom brake line you'll need to make + line bending tool, it'll be less than 200.

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z-ya Newbie

z-ya

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You really won't notice that much of a difference just putting the 4x4 calipers on the stock solid rotors. If you are sticking with the stock front solid rotors, use the stock Z calipers. When in good condition, with good pads, they fine for street, autocross, and light track use. There is a huge selection of pads available for the Z calipers too. I gues it all depends on what you are doing with the car. Properly adjusted rear drum brakes in good shape are also fine for the street. Remeber, all SCCA ITS cars you see on the track use STOCK brakes, and they are pretty darn fast. Stock brakes in good shape, is the easiest route.

 

If you have decided that you have to have better than stock braking, the 240SX rear disc setup that Ross sells is and excellent choice. I have them on my car, and I'm very happy with them. For the front, look at using the Z31 front rotors with the spacers that Ross and JSK sells so you can use the bigger 4x4 caliper. Remeber that as soon as you start modifying the stock brake system, you will probably need to install a proportioning valve to get the rear bias set correctly. If you don't you may end up with brakes that don't work as good as the stock ones did.

 

The next step is to go with a Wilwood or other race type setup. A lot more money, and more maintenance. If you aren't driving your car on a race track, you don't need this much brake.

 

Pete

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fl327 Newbie

fl327

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If you were staying solid rotors I would say the 4x4 solid rotor conversion is worth doing, I would rather go to the 4 piston setup with new calipers than buy new stock 2 piston units. I did the conversion before and I loved it. Those brakes stop a mini truck with a full load just fine, I think they are a good setup for a street z that needs the panic stop that a unrebuilt stock z braking system cannot provide sometimes. With the semi metallic pads and ss lines, i couldnt even get the suckers to fade, it would just lock up if i full out mashed the brake pedal, but the stopping distance was still relatively improved vs. the stock setup, which I couldnt get to lock up if i tried, it would fade before it reached that point. True, they are not the best brake setup when you compare wilwoods and the vented rotor swap, but I wouldnt go and call it a waste of time, its not.

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brokebolt Newbie

brokebolt

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Do a search using author on this forum and my log in. You should find 9 postings some will contain info on junk yard parts that you can get that will bolt on to your Z. Go here for a quick look.

 

http://hybridz.org/nuke/index.php?name=PNphpBB2&file=viewtopic&t=19020&highlight=

 

I've been passing around sections of my notes page for a few years now. Use the info that I have posted as you like. Here is a link to the page that has all the same info as above with out the discussion on page 6.

 

http://www.cardomain.com/memberpage/496289

 

Mike

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Modern Motorsports Ltd Newbie

Modern Motorsports Ltd

Posted
Posted
I've got a 1972 240z and want to get some rear discs for it. Can anyone point me in the right direction? Is there a kit somewhere? Also' date=' I found some 4 piston caliper front brakes that looks pretty nice, any opinions?

 

Thanks![/quote']

 

ZMEPRO: we offer matched packages for your needs, may be tight clearing 14's but clear most all 15's (they have cleared some 14's by the way)

 

Front vented 4x4 setup (above setup minimal gain, it's the stock solid rotor that limits you, you're not doing full ducting or running the high grade race pads ITS cars do so would greatly benefit from a vented rotor setup shown here)

http://www.modern-motorsports.com/catalog/product_info.php?products_id=48

 

doesn't include calipers but we can include a set for you at additional cost/inquire. The above 4x4 vented setup is a common and affordable setup that works well.

 

Depending on your dad's generosity and your wheel size (16's for this setup) there's our Xtreme setup,

http://www.modern-motorsports.com/catalog/product_info.php?cPath=22&products_id=55

(and yes, I have had dad's previously buy this setup for their sons...lucky sons!)

 

Meets ALL needs you could demand of it functionally:) From the fully profiled lightweight rotor hats to the calipers/rotors/pads etc.

 

For a fine rear disk setup we have this engineered package,

http://www.modern-motorsports.com/catalog/product_info.php?products_id=2

 

it offers larger rotor diameter/greater swept area and functional heat sink than the MSA noted rear setup above, as well as usage of later model calipers vs. MSA. If you ever go to a rear CV conversion it'll definitely clear our rear disk setup, no promises to clear MSA rear setup. Our brackets with greater machining effort price out less than MSA pieces leaving you money for other items or savings.

 

I'd suggest an adjustable brake proportioning valve to dial in your ideal brake bias after your modifications.

http://www.modern-motorsports.com/catalog/product_info.php?products_id=53

 

Any questions, feel free to email us directly.

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