Calliper anti vibration plates

I just realised I started this discussion and never returned to it! Anyway I was successful in making the anti-rattle/pad retainers, I had about forty blanks cut from sheet spring steel, experimenting I found that trying to bend the blanks as is, caused them to split but heating them evenly to cherry red allowed me to bend to the shape but when cool they didn’t hold the shape, I found reheating and quenching made them hold their shape and spring. I will post some pictures later.

Good show!!!! Nothing like learning new stuff.....about old cars!

Cheers!

This is the best shot I can get due to having to use the flash.

Awaiting install

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...beautiful work, guys...! Lee

Just as a note.....not sure about rear calipers, but my front alloy "CR's" had dates stamped in them, presumably from unit assembly at Girling....VERY tiny characters....easy to miss!

In addition to window dates, for some of you, this can help nail down when your car was built.....sort of!

Good work! Keep it up!

Rocky, Yes, in fact the attached references say that the Jensen Mk3 used the same Girling 17/3 front and 12/3 rear (same, meaning the same casting as used for years on Lambo/Maserati and Mangusta). Volvo P1800 also used Girling 17/3, but these are a different casting (and may be a different center, I suppose 3.0" instead of 3.5"). The picture you show for the rears shows the spacer used with the ventilated disk (as used for later Maserati).

So many cars used these brakes, still (when the cars were Lambo, Iso Grifo, and Maserati!) only the service parts (rebuild kits and pistons) grow on trees...Lee

These are the rear calipers from 8MA1244 when I rebuilt them a few years back.

I was told they were the same as Lister Jag and big block Cobra

Yeah, Denis, I'm learning that the wrong thing is to ever assume there was anything 'correct' for a Mangusta….Esp, it seems the change to the 3 piston iron Girlings wasn't a permanent change! My 1076 neither had the leather wrapped steering wheel (as I can tell, maybe only a handful of cars had a wood only Ferrero, no leather wrap) and the 3 piston brakes seem to be a similar exception...Lee

There are variations with Girling calipers: 2 styles on fronts and 2 styles on rears. Don't know if it was based on order or part availability. I am trying to recall some 2, 3, 4 piston calipers, some calipers in cast others in aluminium, and front rotors 292x14 and rears 268x12,5 or 280x12,5

here is a composite from 3 build sheets

Denis,

I didn't notice the dates stamped into your rear calipers! Just visible..... Looks like Oct 2 of 68 or 69 (8 or 9)???? Perhaps you can clarify??? I would expect a 69 date for your car!

Great!!! Was unknown as to dates in the rear alloy versions, now we know "at least one did!"!!

Caliper Summary Time!

FRONT: Type "CR" 2 pistons, 2-3/8" diam. Alloy one piece casting. "Typical"
Seal Kit #SP2502.

Type "17/3" 3 pistons 60mm and 43mm Cast iron two piece castings. "Later cars" Seal Kit #SP2577

REAR: Type "ORA" 2 pistons, 1-3/4" diam(?). Alloy one piece casting with parking brake. "Typical but interspersed with 12/3 type thru production. Seal Kit #SP2557 (???)

Type "12/3" 3 pistons, 42.8mm (1.685") and 30.2mm (1.189"). Cast iron two piece castings with parking brake, can be marked "Fiat-Girling" Used on Fiat 2300 sedans and perhaps Fiat Dino's. Seal Kit #2524
Pads are Jag E-type 69-75

Parking Brake Pads: (I believe these to be the same for all, not dependent on caliper body.
#GPS518H, GDB518, GD518, MGB518 Lotus Elan, Plus 2, Climax, and Elite models.

Master Cylinder Seals: #4115452 7/8" "Fiat Seal" Round donut seal. Many M/C and Clutch apps!


NONE of these had crossover passageways ala Pantera calipers, but used external crossover tubing.

Bleeder screws for CR's and ORA's are same as Fords of the day...Mustang etc...at least they can be substituted... Can't say about 3 piston versions....maybe.

OK, that's what I recall,,,,can edit post to put in ?? values or take ?? out.

Now I can forget this....and remember something else useless.....!

Ciao!

Steve, the piston sizes for 17/3 were 60mm and 43mm; rear 12/3 were (I think) 43 and 30mm (but some references for 12/3 variants show 38/30mm and kit 2531, or 48/34mm and kit 2526). Just search ebay for stainless pistons on Maserati or Lamborghini..The seal kit for brakes on '1076 is the SP2524.

Denis, I was deeply afraid the answer on brakes would be in the buildsheet , but am interested if anybody has aluminum rear calipers on their Goose. 2 of the 3 build sheets quote "alluminio" for the rears and I see "Ghise" means "pig iron..." But aren't these reversed ? Lee

Guys, thanks for all the good info. I went ahead and ordered anti-vibration plates from MIE (great find, Lee!) and will post a pic when they arrive. Also wanted to share two links which illustrate a group of Girling race calipers, apparently available from the UK. The alloy ORA is shown but not with it's hand brake accessory.

http://race.parts/files//7dbe4...a/Girling%20page.pdf

http://race.parts/Catalogue/Br...ers/Girling-Calipers

Sorry not sure how to link those! Anyway for the iron Girling rears my records show:
Large piston 42.8mm (1.685")
Small Pistons 30.2mm (1.189")
(These numbers are from the same basic caliper on a Fiat Dino). I believe there were different iron caliper versions with different pistion sizes, but don't know what is normal for the Goose....I've only seen alloy Goose ORA's up close.

Richard, nice work on those plates!

Ok, guess they link automatically Raceparts does have a selection of rubber Heim joint boots too, which seem hard to source reliable/economically.

OK, I have updated the post above with the corrected piston diameters. Thanks!!!

I also added the seal kit #'s and the M/C seal number. The ORA (two piston alloy) seal kit needs to be verified. My notes are getting a bit ragged and cluttered.....!

Nate- I noticed rubber booties in the past from some place in the US, for WAY less $$ than the normal supplier of the Heim joints. Std US sizes...but the rubber doesn't care what you put inside it!!!! Can't recall who it was that also found this.....must be posted somewhere on this site!!!???

PS: The racing ORA's wouldn't have parking brake bits on them.....just more stuff to fall off the cars....!

Cheers!