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#1 |
8v are still cool, right?
Join Date: Oct 2010
Location: Cedar Hills, UT
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![]() I'm upgrading my brakes, and ordered a CENTRIC 13061062 Master Cylinder for a 1994 Mustang GT from Rockauto. I also ordered a new cheap 240 master cylinder reservoir from IPD. I've seen people say that you should use an oring to space the Volvo reservoir because the nipples are longer, but that's not what I've found.
What do you think, did I get the wrong master cylinder, or is the cheap Volvo reservoir made incorrectly? I'll probably use my old ATE reservoir now, even though it's a bit yellowed. ![]()
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1982 242 Turbo. |
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#2 |
educator monkey
Join Date: Apr 2010
Location: USA
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![]() Why not use the mustang reservoir on the mustang mc?
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#3 |
8v are still cool, right?
Join Date: Oct 2010
Location: Cedar Hills, UT
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![]() Looks ugly and won't fit my car.
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#4 |
OEMplus++
![]() Join Date: Aug 2003
Location: San Francisco
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![]() The o rings are to help land the barb in the meat of the seal. The spacing on the 240 res. is slightly different and I think the barbs are a little smaller. I had the same question, but it holds 20 psi with the o-rings.
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#5 |
OEMplus++
![]() Join Date: Aug 2003
Location: San Francisco
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#6 | |
8v are still cool, right?
Join Date: Oct 2010
Location: Cedar Hills, UT
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![]() Quote:
I would understand why o rings are necessary for positioning the barbs in the seal if the Volvo barbs were longer, but that's not the case for the parts I have, which makes me think I may have ordered something wrong. |
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#8 | |
OEMplus++
![]() Join Date: Aug 2003
Location: San Francisco
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![]() Quote:
The tank you ordered looks correct Here's the PN for the one I have. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 |
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#9 | |
OEMplus++
![]() Join Date: Aug 2003
Location: San Francisco
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![]() Quote:
Page 8 https://drive.google.com/file/d/0B70...ew?usp=sharing |
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#10 |
Board Member
Join Date: Dec 2014
Location: Cool, CA.
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![]() There was a Korean stripper on Fort Benning that had nipples as long as your thumb. That’s my only experience with long nipples and it was frightening.
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#11 |
8v are still cool, right?
Join Date: Oct 2010
Location: Cedar Hills, UT
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![]() To extend the push rod I got this, and turned it down to an effective length of 0.8"
https://www.wilwood.com/Hardware/Har...emno=300-13885 |
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#12 |
Salaminizer
Join Date: Nov 2007
Location: Reading pa
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![]() The outlet adapter thread is 1.0 correct?
__________________
Feedback thread https://forums.tbforums.com/showthread.php?t=144924 1978 242, 5.3 L33 1979 242, MS, R brakes 2006 V50 T5 AWD @ 17 PSI |
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#13 |
Dejected by Volvo
Join Date: Nov 2002
Location: North of Dallas
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![]() So . . . What makes this an upgrade over a normal 240 master?
Dave
__________________
![]() '84 242ti, fourth owner, mine since 2003. Always garaged since brand new. Old-school rounds because I like. B21FT, SDS EFI/IGN, TD04HL-15G, T5Z trans with 0.73 OD, hydro clutch, 3.91 diff with unmodified G80. Volvo Ambivalence of Volvo Enthusiast Community: prancingmoose.com/#novolvo Dave's Volvo Page: davebarton.com 240 Mods and Fixes Pages: 240turbo.com/volvo240mods.html |
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#14 |
Salaminizer
Join Date: Nov 2007
Location: Reading pa
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![]() Larger piston with more volume for R brakes is why I have one, the 4 piston calipers require that, it's even hard to bleed the brakes with the factory master cyl. Just trickles out. I have the r brakes but didn't install the Mustang MC yet, so they feel slightly better than brand new factory brakes.
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#15 |
Salaminizer
Join Date: Nov 2007
Location: Reading pa
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![]() Anyone have a link for the outlet adapter?
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#16 | ||
Dejected by Volvo
Join Date: Nov 2002
Location: North of Dallas
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![]() Quote:
Anyone know the Mustang versus 240 MC bore diameters? Some 240 masters are STEPPED. Edit: Found it. 1994 Mustang GT MC: 27 mm bore. Stock 240 MC: 22 mm bore. From Homer's brake thread: Quote:
Last edited by dbarton; 05-27-2019 at 08:49 AM.. |
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#17 | |
Dejected by Volvo
Join Date: Nov 2002
Location: North of Dallas
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![]() So please correct me if I'm wrong.
My searching tells me stock 240 front 4-piston calipers have 38 mm pistons x4. R calipers have 38 mm x2 and 34 mm x2. That doesn't tell me you need more volume for R calipers. Edit: Corrected below: Quote:
Last edited by dbarton; 05-28-2019 at 08:26 AM.. |
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#18 |
Salaminizer
Join Date: Nov 2007
Location: Reading pa
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![]() The rears? Also I am pretty sure my '79 didn't have 4 piston calipers, and the rears definitely weren't. The problem became pretty obvious when I tried to bleed them, there was barely any pressure at all 4 corners. I installed a new brake booster, stock MC and all rubber lines at the same time as doing the brakes just to have everything fresh. After looking into it, there are a few threads that talk about this, and they used a Mustang GT master cylinder to fix it.
Also the car doesn't stop nearly as well the S60R the brakes came from. I don't know, just what research here lead me to. |
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#19 |
Board Member
Join Date: May 2015
Location: Finland
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![]() What I found with a quick look at a couple of sources is that R calipers have 42x2 and 38x2 front, 30x2 and 28x2 rear.
__________________
444 -55, 242 DL -80 (was 4.6l)sold, 245 -88 "B6284T" sold, 245 -92 B6294, 245 -90 "B6284T" |
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#20 |
Board Member
Join Date: Nov 2015
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![]() You can get an M12x1.0 to M10x1.0 adapter from Brake Hoses Unlimited / goodbrakes on eBay:
https://www.ebay.com/itm/Brake-Line-...-/331605500736 or if you're making your own lines, you can just use an M12x1 nut sized for 3/16 lines. |
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#21 | |
Board Member
Join Date: Nov 2015
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![]() Quote:
I wasn't able to locate stock of either 240 ABS masters or rebuild kits for same, and building a race car with a master pulled from a ~30 year old derelict did not seem ... responsible. |
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#22 | |
Dejected by Volvo
Join Date: Nov 2002
Location: North of Dallas
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![]() Quote:
Can you confirm if the Mustang master has stepped bore or not? Does anyone think it makes any difference? Dave |
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#23 | |
Dejected by Volvo
Join Date: Nov 2002
Location: North of Dallas
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![]() Quote:
Dave B |
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#24 |
Prius Owner
![]() Join Date: Jul 2008
Location: Dallas, TX
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![]() It does make difference. Im still using the mustang master on the stock 240 calipers. R calipers did brake better except the squeal was horrible on my car and turned into a slight grinding sound here and there after the brakes would get warm. But it does make a difference
__________________
93 245 LS Engine Swap Project |
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#25 | |
Board Member
Join Date: Nov 2015
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![]() Quote:
As a datapoint, we did about 15 hours of our last 24-hour race on just the front brakes after breaking a rear caliper bracket. It made late trail braking a bit weird, but didn't seem to affect our lap times or overall enjoyment. So, probably not a huge difference. |
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