NCP90 Rear Drum to Disc swap

[Compeer]

Originally Posted by Neinris

I see why that section in the rear is broken into hard line, rubber hose, hard line, then rubber hose again, to shorten the rubber hose length.

The slight swelling under pressure is what I was banking so you'd get less pressure in the rear for your rear disc conversion.

I'm keeping the hard line in between the two rubber hoses that I have, but I'll straighten the hardline, to extend it a bit and be able to tuck the rubber hose and not use the original bracket so it won't hit the frame.

chop the original bracket off and weld it on inside instead of the top, theres a thread on here I read where they did this. Not sure if they got new hardlines made.

[Neinris]

Originally Posted by Compeer

chop the original bracket off and weld it on inside instead of the top, theres a thread on here I read where they did this. Not sure if they got new hardlines made.

That's exactly what I had planned on doing, but my buddy (who made the plate for my disc conversion) can't make it to help me this weekend to install the disc conversion. He has a welder, but he lives an hour away, I'm too lazy to grab it during the weekday. I'll probably end up just riveting the brackets in place.

I bought the stock hard lines supposedly for the Yaris SE, PN 47324-52100 & 47323-52110. But having a shop make them would probably have been cheaper.
Well, at least I can use them to mock up about where to put the rear most brackets before I straighten them out a bit to stretch them to reach the bracket that will be relocated.

Are the TRD springs that much softer than the Tein's? Or I guess it's just the angle of your pic that makes it look closer to the frame vs mine?

https://i.gyazo.com/f57e63f36c345af0...1ca6874b7a.jpg

https://www.yarisworld.com/forums/at...1&d=1615157532

https://www.yarisworld.com/forums/at...1&d=1615157532

[Compeer]

Originally Posted by Neinris

That's exactly what I had planned on doing, but my buddy (who made the plate for my disc conversion) can't make it to help me this weekend to install the disc conversion. He has a welder, but he lives an hour away, I'm too lazy to grab it during the weekday. I'll probably end up just riveting the brackets in place.

I bought the stock hard lines supposedly for the Yaris SE, PN 47324-52100 & 47323-52110. But having a shop make them would probably have been cheaper.
Well, at least I can use them to mock up about where to put the rear most brackets before I straighten them out a bit to stretch them to reach the bracket that will be relocated.

Are the TRD springs that much softer than the Tein's? Or I guess it's just the angle of your pic that makes it look closer to the frame vs mine?

https://i.gyazo.com/f57e63f36c345af0...1ca6874b7a.jpg

https://www.yarisworld.com/forums/at...1&d=1615157532

https://www.yarisworld.com/forums/at...1&d=1615157532

the tein are softer but also its the Flex Z so I I can shorten front and rear shock absorbers to match the ride height, So yeah the shocks are shorter even than my short trd shocks which I believe are shorter than stock as well.

Honestly there is a guy selling a set of cusco coilovers second hand and i kinda wanna get them, the fronts are stiffer but the rears are the same as tein, I could sell the flexz set then maybe, would have some decent track shocks and the tiens for the road. Just need to get my guy certified and plated for adjustables. If I buy the cusco i may even just swap the springs depending on how worn they are. Also do you run spacers? Plan to buy some so i can stop slight inner tire rub, Im thinking 3-5mm will do they only just touch full lock.

[Neinris]

Originally Posted by Compeer

the tein are softer but also its the Flex Z so I I can shorten front and rear shock absorbers to match the ride height, So yeah the shocks are shorter even than my short trd shocks which I believe are shorter than stock as well.

Honestly there is a guy selling a set of cusco coilovers second hand and i kinda wanna get them, the fronts are stiffer but the rears are the same as tein, I could sell the flexz set then maybe, would have some decent track shocks and the tiens for the road. Just need to get my guy certified and plated for adjustables. If I buy the cusco i may even just swap the springs depending on how worn they are. Also do you run spacers? Plan to buy some so i can stop slight inner tire rub, Im thinking 3-5mm will do they only just touch full lock.

Yeah, I thought you had the Flex Z's, but why did you go with the TRD? You can play with the Flex Z's preload without messing with the height ride. Oh but I guess you can't on the rear?

I'm on the Tein's S Tech lowering springs, I guess they're stiffer than the Flex Z's, but still comfortable. So I didn't really feel that the brake line brackets were hitting the frame until it was mentioned here. I haven't replaced my rear shocks yet, still stock. I'm planning on replacing them with Bilstein B8s. So that might even help with the brackets not hitting the frame, but I'll go ahead and relocate them when I complete the rear disc conversion this weekend. The front struts are already B8s, and what a difference they make. I still have to trim the bump stop, I only feel them bottoming out when I'm going 70+MPH on the freeway and hitting a bump. I've ridden in cousin's 370Z, and I feel that my Dee Dee is still more comfortable.

I'm not on any spacers, what's your wheel's stats? My wheels are from Mini Cooper, 15x5.5in 45 offset. I don't feel nor see any rubbing up front. Although, with the disc conversion I'm doing, the rear wheels' track will widen by 1/4in (6.35mm) on each side, meaning they will be 1.35mm (2.7mm total) wider than the front.
With my recent discovery, I'm pursuing the 5x114.3 PCD, and put Skyline R32 wheels, which are 16x8 30 offset.
If anyone here does it before me, give me credit...
But I think it's been done over seas...

[Compeer]

Originally Posted by Neinris

Yeah, I thought you had the Flex Z's, but why did you go with the TRD? You can play with the Flex Z's preload without messing with the height ride. Oh but I guess you can't on the rear?

I'm on the Tein's S Tech lowering springs, I guess they're stiffer than the Flex Z's, but still comfortable. So I didn't really feel that the brake line brackets were hitting the frame until it was mentioned here. I haven't replaced my rear shocks yet, still stock. I'm planning on replacing them with Bilstein B8s. So that might even help with the brackets not hitting the frame, but I'll go ahead and relocate them when I complete the rear disc conversion this weekend. The front struts are already B8s, and what a difference they make. I still have to trim the bump stop, I only feel them bottoming out when I'm going 70+MPH on the freeway and hitting a bump. I've ridden in cousin's 370Z, and I feel that my Dee Dee is still more comfortable.

I'm not on any spacers, what's your wheel's stats? My wheels are from Mini Cooper, 15x5.5in 45 offset. I don't feel nor see any rubbing up front. Although, with the disc conversion I'm doing, the rear wheels' track will widen by 1/4in (6.35mm) on each side, meaning they will be 1.35mm (2.7mm total) wider than the front.
With my recent discovery, I'm pursuing the 5x114.3 PCD, and put Skyline R32 wheels, which are 16x8 30 offset.
If anyone here does it before me, give me credit...
But I think it's been done over seas...

The car came with all the trd stuff installed. I put them back in for warrant of fitness, Adjustible suspension requires ceritifcation and I get also get seats and other things certed for it at the same time so need to sort seats and then go and get the car certifed and plated (they install a plate in the engine bay stating mods are legal).

Originally Posted by remcafee

flex zs are stiffer than s tech springs, the flex zs are 4ksprings front and rear

The cusco ones came with 5k front and 3.3k rear, If the springs fit thats still cheaper than the new set of springs for the tiens and if the cusco set is good can use that with just tien rear springs as ther cuscos are supposed to be for touring as well as fast street and supposed to be stiffer feeling.



Tein Spring set, looks like thinner diameter.



And the cusco set looks chunkier in the front for sure.