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| !988 brake master cylinder alternative (Page 1/2) |
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Rick Vanderpool
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MAR 20, 06:24 PM
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I've done some research online and have an idea of what can be used as a replacement for 1988 brake master cylinders. Looking at the Centric website I see the following;
Centric Part #130.62030 for 1988 Fiero lists the bore as 23.8 mm.
Centric Part #130.66011 for 1994 S10 lists the bore as 23.6 mm.
All other specs match, and I know that it will mount to the booster since the S10 booster can be substituted for the Fiero.
The difference in the bores is less than 1%. That shouldn't make a noticeable difference in braking.
I haven't tried this so I don't know if it will work but thought I would put it out there to see what others think.
Rick
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jdv
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MAR 20, 07:33 PM
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Rick Vanderpool
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MAR 20, 08:05 PM
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A: Price. $50 vs. $130
B: Availability, The Fiero master has not been available until just recently, and may not last long
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fieroguru
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MAR 21, 06:07 AM
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There is another application that on paper is an exact match to the 88 Fiero for piston and port sizes. It comes in an aluminum body and was from a wide use application. The only issue is the reservoir is deeper/larger, but it might fit as is (might restrict storage of sun roof or not). I have one on the shelf to play with but haven't taken the time to verify everything is a match.
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OldGuyinaGT
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MAR 21, 04:34 PM
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About a year ago, I replaced my booster and master cylinder as I described in the middle of this thread:
https://www.fiero.nl/forum/Forum2/HTML/145908.html
There were some concerns and criticism raised at the time, but none of them have been borne out in my case, anyway. I've driven it about 2400 mi since then, and I am extremely happy with the results. While I don't race, I've been very pleased with the feel and performance in all street/highway conditions - and traffic and drivers in my area give me ample opportunities to test it. The only issue I had was that in November the Cardone MC had some sort of internal failure (I think the check valve but never looked) that gave me a very low pedal, so I replaced it with an AC Delco Professional 18M986 ('same' part, from the same application), and everything is great again.
Since this is an "off-label" application, I'll stop short of calling it a direct replacement (YMMV). But, especially since buying a new exact replacement or rebuilt for the 88 Fiero, is just about totally impossible, and since rebuild kits are quite rare at best, I wouldn't hesitate to do this again. I like it - a lot. If you so decide, it'll cost you about $100 to find out for yourself.
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sanderson231
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MAR 22, 02:40 PM
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The front bore for the 88 MC is 15/16". The front bore for the 84-87 is 1". If the 84-87 is installed in an 88 the pedal travel will be less and the pedal effort to get the same caliper pressure will be higher by the ratio of the bore sizes squared - about 14%. I had an 88 where a repair shop installed the 84-87 MC and by my feel the brakes worked fine. ------------------
formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged
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fierosound
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MAR 22, 07:25 PM
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sleek fiero
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MAR 22, 09:25 PM
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I just talked to Summit and they don't have 88 master cylinders in stock today but it can be shipped April 17th . Same goes for some of the other centric parts for our cars.
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Vintage-Nut
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MAR 23, 11:27 AM
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| quote | by sleek fiero
I just talked to Summit and they don't have 88 master cylinders in stock today but it can be shipped April 17th |
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FYI - When I ordered on Mar. 14th, they didn't have them in stock either - "Ships Directly From Supplier"
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Vintage-Nut
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MAR 24, 11:48 AM
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BTW - Another '88 Fiero owner also needed a brake master cylinder; so he ordered it from Summit as I did.....
He got an email from Summit today (Mar.24) and his order is going out with a delivery as Wed. 29th
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