Lotus Elan

WTB 16p OSF brake caliper

PostPost by: pptom » Sat Dec 01, 2018 8:43 pm

Just rebuilding my brakes at the moment and I have an issue with the OSF caliper body which I need to replace. Early +2 so 16p.
I only really need the inside half of the casting (which holds the bleed nipple and locating bolts) but will take a whole caliper for rebuild if that is all that's available.
Don't really fancy one of the new reproduction ones.
I'll be replacing pistons, seals pins and getting them re-plated, so aesthetic condition not important.
Located in Northampton (UK)
Thanks
Tom
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PostPost by: stuart » Sun Dec 02, 2018 3:40 pm

hi Tom
yes got one of those, message me

regards
Stuart
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PostPost by: alan.barker » Mon Dec 03, 2018 12:52 pm

I imagine the problem is the Bleed Nipple has sheered off.
I had that happen years ago and after bled the brakes by unscrewing and tightening the Brake pipe connection into the caliper. Never did drill out broken Bleed Nipple :wink:
Alan
Alan.b Brittany 1972 elan sprint fhc Lagoon Blue 0460E
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PostPost by: pptom » Mon Dec 03, 2018 2:28 pm

Close Alan, its actually the brake line connection. Seized solid.
Sheared, managed to weld a nut on the end but it sheared again further down in the recess, despite loads of heat, final step was to drill it out, but I'm not perfectly central and have now gone as big as possible without touching the casting threads and the remains of the screw are still solid.
As much as I hate to do it, i have to call it quits and replace.
The calipers have all been fighting me as the car has sat since the early 90's but this is the only bit that's defeated me out of 2 sets of rears and 1 of fronts. Had to resort to welding a bar on a few pistons though
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PostPost by: alan.barker » Mon Dec 03, 2018 3:41 pm

The thread in the caliper is 3/8" unf.
You can drill it to 7/16" unf tapping size.
You can then tap 7/16" unf and put a 7/16"unf fitting for 3/16" pipe. They do exist and are used on Dual Master Cylinders.
Burton Power have thm in stock.
Alan
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PostPost by: stuart » Sun Dec 23, 2018 1:24 pm

Glad to help Tom
hope it plated OK.

regards for Christmas!

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PostPost by: pptom » Sun Dec 23, 2018 2:43 pm

img_20181223_141934-864x11521.jpg and


Thanks again Stuart, picked them up today
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