Upgrading the 1983 Rear master cylinder

[Ansimp]

I have never used Teflon tape on brake components. I am guilty of using Never Seize everywhere though. Bleed nipples have a tapered seat and that is what stops the fluid from leaking past the bleed nipple. I don't know why they would use tape unless as some sort of anti seize. Rubber grease would work great and wouldn't contaminate the brake fluid if it was sucked back in. I will still use a little never seize on the threads as I always do when I have it.

 

[83gl1200]

Anti seize sounds good, I think I'll go that route. I think in the videos they said using something to seal the threads makes it easier, less pumping to maintain vaccuum without air leaks.

 

[Ansimp]

83gl1200 » Tue Aug 19, 2014 12:16 pm[/url]":jn4p88zy]
Anti seize sounds good, I think I'll go that route. I think in the videos they said using something to seal the threads makes it easier, less pumping to maintain vaccuum without air leaks.

That does make sense with the vacuum bleeder. I have access to a vac pump from my ac charging system so it wouldn't care about air leaking around the bleed nipple :yes:

 

[joedrum]

well i hate brake work ...video was hard to watch too ...yuck

 

[canuckxxxx]

OK, Dan,... next...power brakes

 

[dan filipi]

1800 MC is in.

This is the way to go for sure.
Once I bled the rear, pedal was high and firm. I hadn't even bled the front yet.

There is very little room between the swing arm and the MC right there but positioned right it fits nicely.
Have yet to remount the rear shock air fitting, need a longer bolt, and the forward bolt for that air bracket won't be put back in because the MC is in the way.
I sure won't be losing any sleep over that.

Test ride this weekend.

 

[mcgovern61]

No pics.....didn't happen! :smilie_happy:

 

[dan filipi]

Shame on me......

There's an extra hole now next to the top bolt I drilled to get alignment on the other MC.

 

[joedrum]

look great to me

 

[Ansimp]

+1 :good:

 

[dan filipi]

Well I don't know about looking great but it's solid and aligned good with the pedal arm.

 

[AApple]

:good: :good: :clapping: :clapping:

 

[Steve83]

Sweet! Looks like this is the way to go for sure. With the larger bore, you might need a bit more pedal pressure, but it shouldn't be much.

 

[dan filipi]

I'm not completely writing off this mc as not doable.
I think the lack of pressure at the pedal had a lot to do with this cheaply made mc and bad rubber not sealing well in the bore.
I would like to try a honda OEM of this same model but not for a while. Too many other things to do.

 

[PeterDas]

dan filipi » Thu Aug 21, 2014 5:43 pm[/url]":m0skrf4a]
Shame on me......

There's an extra hole now next to the top bolt I drilled to get alignment on the other MC.

Where did you get the hoses that thread into the splitter block?

 

[Ansimp]

PeterDas » Sat Aug 23, 2014 11:48 am[/url]":29076nv3]

dan filipi » Thu Aug 21, 2014 5:43 pm[/url]":29076nv3]
Shame on me......

There's an extra hole now next to the top bolt I drilled to get alignment on the other MC.

Where did you get the hoses that thread into the splitter block?

Post #43 details Dan having the line custom made :whip:

 

[PeterDas]

Ansimp » Fri Aug 22, 2014 7:14 pm[/url]":30235p25]

PeterDas » Sat Aug 23, 2014 11:48 am[/url]":30235p25]

dan filipi » Thu Aug 21, 2014 5:43 pm[/url]":30235p25]
Shame on me......

There's an extra hole now next to the top bolt I drilled to get alignment on the other MC.

Where did you get the hoses that thread into the splitter block?

Post #43 details Dan having the line custom made :whip:

Thank you Ansimp.

 

[Omega Man]

dan filipi » Thu Aug 21, 2014 5:52 pm[/url]":j37lhkg8]
Well I don't know about looking great but it's solid and aligned good with the pedal arm.

Yep, a functional upgrade made with some serious thinking and hard work to be sure, but pretty... no. It's great there is an alternative now though! Good job Dan.

 

[dan filipi]

Randy, You didn't have to agree with me :smilie_happy:

Went for a spin and the pedal feels real good.
It doesn't feel like I have to put any more pressure on the pedal than with the OEM master cylinder, in fact less. Probably due more to this one actually working like it's suppose to.
Once I check over the alignment a bit better and cinch everything down I can call this a done deal.

 

[weightlifter99]

Awright! Great job!!!