Looking for either a new/rebuilt clutch master cylinder or rebuild kit. 83 eagle, 258, 5 speed. Thank you
Hi, if you're not having any luck here, you may try car-part.com. They have access to the inventory of a lot of salvage yards, I did a quick search and found a couple used master cylinders available. Good luck!
Quote from: mdante17 on September 09, 2023, 08:43:32 PM
Looking for either a new/rebuilt clutch master cylinder or rebuild kit. 83 eagle, 258, 5 speed. Thank you
Both master and slave cylinders are readily-available new.
Clutch Master Cylinder Reservoir: Kennedy-American, Girling 64475473 / 64047341
Clutch Slave Cylinder: RockAuto AMS Automotive S0516
When you say the clutch master cylinder is readily available can you supply a link? Ive installed the willwood version and my clutch is right off the floor, it works but not what it should be. Ive bled it properly (a dozen times), slave is new, and the line is a new braided line with remote reservoir.
I have been looking for a master cylinder as well and came across these. I have not ordered one yet but I might soon as mine is starting to leak. Just need to measure the bore diameter.
OBP Remote Reservoir Master Cylinder. They are a replacement for the Girling master cylinders and available in 5 different bore sizes.
https://www.obpltd.com/product-page/obp-master-cylinder/ (https://www.obpltd.com/product-page/obp-master-cylinder/)
They can be ordered from Pegasus auto racing in the US.
https://www.pegasusautoracing.com/productselection.asp?Product=3519%2D101 (https://www.pegasusautoracing.com/productselection.asp?Product=3519%2D101)
Looking around on Pegasus's website I found you can buy brand new Girling master cylinders. Available in 3 bore bore sizes. They are more expensive than the OBP ones.
https://www.pegasusautoracing.com/productselection.asp?Product=3502&utm_source=google&utm_medium=cpc&utm_campaign=3502&srsltid=AfmBOor4yz6o9RPuxnfjAiJuL0IxYopuIuHW8Qo-Aa_9b5d_UOf9FeISbs4&gQT=1 (https://www.pegasusautoracing.com/productselection.asp?Product=3502&utm_source=google&utm_medium=cpc&utm_campaign=3502&srsltid=AfmBOor4yz6o9RPuxnfjAiJuL0IxYopuIuHW8Qo-Aa_9b5d_UOf9FeISbs4&gQT=1)
They also sell rebuild kits. This would be a great option if your original master cylinder bore is free of scratches but leaking.
https://www.pegasusautoracing.com/productselection.asp?Product=3504 (https://www.pegasusautoracing.com/productselection.asp?Product=3504)
Quote from: Grizz on June 08, 2025, 10:58:29 AMWhen you say the clutch master cylinder is readily available can you supply a link? Ive installed the willwood version and my clutch is right off the floor, it works but not what it should be. Ive bled it properly (a dozen times), slave is new, and the line is a new braided line with remote reservoir.
I'd recommend just calling Kennedy-American @ (614) 879-7283 and giving them the Girling numbers I listed above and your application. Their website is not particularly easy to navigate, but they've been helpful to me in the past. As usual, calling some of these AMC-specific vendors is better than relying on their websites. Sometimes they may not have something listed, but it's in stock anyway, and if they don't have it, they may know where to send you to someone that does, or an alternative.
I would personally not recommend rebuilding a clutch master cylinder. They are way too much of a pain in the butt on an Eagle to replace to uninstall it, do the rebuild, reinstall it and then have the thing either fail or leak within short-order. I converted my automatic Eagle to the factory T5 setup, and access to the master cylinder requires the brake booster to be removed, unless someone is a better contortionist than I. That's quite a chore in itself.
If you do use a Girling master cylinder, please do yourself a huge favor and spring for the Castrol EU-spec DOT4 brake fluid as this is permitted for the seals in the Girling MC. The first time I did the T5 swap, I used regular Walmart DOT3 brake fluid in a brand new Girling MC and the seals were leaking within (6) months.
Link to the Castrol brake fluid. Pricey, but worth it IMHO.
https://www.britishautousa.com/products/castrol-dot-4-brake-fluid-1-litre?variant=40970964172852&country=US¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&srsltid=AfmBOorZTme7FG-iyJkLXF7Q8rh-AXLpuY6rkxrMeY4qlXhdUJEBWtnDomk&gQT=1
Good luck!
David
Those Girling numbers are just for the remote reservoir; not the cylinder itself.
This is the number on the Girling master I pulled out of my Eagle a few years ago. I could never find anything by searching the number. Girling 74660674 BS3.
Quote from: djm3452004 on June 09, 2025, 05:23:48 PMaccess to the master cylinder requires the brake booster to be removed, unless someone is a better contortionist than I. That's quite a chore in itself.
It can be very easy if you just unplug the bulkhead connector right above it. There is a small bolt in the middle that holds it together. I think it is a 5/16. Once you unplug that it is a 20 minute job + the time to bleed the system.