v6 brake calipers diff from 4cyl? - Toyota Nation Forum : Toyota Car and Truck Forums

boi_si · 07-25-2007, 04:00 PM

i was wondering if v6 carries a larger brake caliper. i know the axles are different but are the hubs still swapable?

white90dx · 07-25-2007, 06:54 PM

Front hubs and brakes are the same between the 4-cylinder and V6 (in the US). V6 axles pop into 4-cylinder hubs with no problem, but do not work on the transmission end.

-Charlie

boi_si · 07-26-2007, 09:25 PM

disc are same diameter as well then. what about brake booster and master cylinder?

white90dx · 07-27-2007, 01:06 PM

Quote:

Originally Posted by boi_si

disc are same diameter as well then. what about brake booster and master cylinder?

I haven't seen any evidence they are different, but I don't know for sure. If you want a brake upgrade, do the V6 rear disks with proportioning valve and get stainless brake lines. That will be a 100% improvment in feel.

-Charlie

atobe · 07-27-2007, 08:34 PM

that and some good pads and rotors

boi_si · 08-24-2007, 11:04 AM

Quote:

Originally Posted by white90dx

I haven't seen any evidence they are different, but I don't know for sure. If you want a brake upgrade, do the V6 rear disks with proportioning valve and get stainless brake lines. That will be a 100% improvment in feel.

-Charlie

is there a picture somewhere i can see what the proportioning valve looks like? i just thought a rear disc conversion using the brake cylinders should be strong enough to hold right?

atobe · 08-24-2007, 11:23 AM

follow the out line from your brake clyinder it'll lead you to a boxy looking thing on the firewall with 4 more lines comming out of it.. that's the proportion valve. it's no fun getting to

white90dx · 08-24-2007, 12:05 PM

Quote:

Originally Posted by boi_si

i just thought a rear disc conversion using the brake cylinders should be strong enough to hold right?

This question makes no sense. What are you trying to ask?

I'll do my best: The stock brake master cylinder (the thing attached to the huge black round thing on the firewall) is the same between the 4 and 6 cylinder cars. From there, two lines go out to the firewall where they go to the proportioning valve. The front brakes do about 80% of the braking, so more pressure needs to go to them. Drum and disk brakes require different operation pressures (drums require much less fluid pressure for the same braking force). The proportioning valve splits the braking force between the front and rear wheels appropriately for the brake balance of the car and should be changed when doing a significant change like a drum to disk conversion.

-Charlie

boi_si · 08-24-2007, 02:57 PM

i did alot of conversion on hondas and never heard of anything like this... ill take a look though.

white90dx · 08-26-2007, 01:57 PM

Quote:

Originally Posted by boi_si

i did alot of conversion on hondas and never heard of anything like this... ill take a look though.

That's because the Honda boys are too cheap to actually do many things right... sadly. (yes, I know a number of Honda boys and the cheap out on EVERYTHING)

It is quite easy to grab the proportioning valve while you are picking up the V6 rear disks.

-Charlie

boi_si · 08-27-2007, 11:19 AM

i just didnt want to get more work if it doesnt make a big difference. some how my rear drums are not working properly and local junk has tons of v6 sedan/wagons. just thought about grabing a pair of disc.