Destroying my brand new caliper (Page 4/6)
Doggo AUG 20, 07:21 PM

quote
Originally posted by richard in nc:


i hope you mean the auto parts store.



I did I did. Had to go to an o’rielys and two auto zones
Doggo AUG 20, 08:01 PM
Distance from caliper to banjo bolt head HAND TIGHT: 0.469 in

Length of entire assembly (two washers + brake hose) HAND TIGHT: 0.541

This is with the thickest washers a guy could get his mitts on

My roommate finds it imperative that I unleash onto you a barrage of photos of the caliper threads that he took. Do you guys need to see more angles of the threads?

[This message has been edited by Doggo (edited 08-20-2024).]

Vintage-Nut AUG 20, 09:45 PM

quote
Doggo:
This is with the thickest washers a guy could get his mitts on / Do you guys need to see more angles of the threads?



0.072-inch isn't a lot of 'Squeeze' area, and I believe that the banjo bolt threads on TFS caliper are 'okay' but maybe not deep enough.

TO ME - I need more information by measuring the banjo bolt thread engagement.
'Measure' the banjo bolt from the bottom of the banjo bolt head to the end.
By subtracting this length from the "Distance from caliper to banjo bolt head HAND TIGHT: 0.469 inch" gets you the "banjo bolt thread engagement".

Consider Your Options:
*Add a Crush Washer {meaning three} as the peanut gallery suggests.
*Run a bottom tap in the caliper to cut more threads BUT I worry about metal chips "on the car".
*Shorten the end of the banjo bolt if you have enough banjo bolt thread engagement.

Your Call

{EDIT} NO, I DIDN'T "bless" Patrick's idea posted below....he is really pushing hard on this shade tree mechanic "solution"

quote
Patrick:
Since the OCPD among us has now given his blessing, go ahead and use a third copper crush washer on each caliper.

[This message has been edited by Vintage-Nut (edited 08-21-2024).]

Patrick AUG 20, 10:04 PM

quote
Originally posted by Doggo:

Distance from caliper to banjo bolt head HAND TIGHT: 0.469 in

Length of entire assembly (two washers + brake hose) HAND TIGHT: 0.541

This is with the thickest washers a guy could get his mitts on.



Since the OCPD among us has now given his blessing, go ahead and use a third copper crush washer on each caliper. Just make sure that all washers are either brand new (never been crushed), or if they're used copper crush washers, that they have been annealed.


quote
Originally posted by Patrick Here:

By the way, in case you're running short of crush washers... the copper ones can be re-used after they've been heated red hot with a propane torch and then allowed to cool.
Doggo AUG 20, 10:43 PM

quote
Originally posted by Patrick:




Which side should the extra washer go on? At the head of the banjo bolt or where the hose meets the caliper?
Patrick AUG 20, 10:47 PM

quote
Originally posted by Doggo:

Which side should the extra washer go on? At the head of the banjo bolt or where the hose meets the caliper?



Probably makes no difference... but I'd put the extra washer at the head of the bolt.
pmbrunelle AUG 20, 10:51 PM

quote
Originally posted by Doggo:

Distance from caliper to banjo bolt head HAND TIGHT: 0.469 in

Length of entire assembly (two washers + brake hose) HAND TIGHT: 0.541




There is no need for a 3rd washer with these measurements; I think there is enough difference.
Patrick AUG 20, 10:55 PM

quote
Originally posted by pmbrunelle:

I think there is enough difference.



Careful now, you're setting yourself up for a stern rebuking.

Doggo AUG 20, 11:09 PM

quote
Originally posted by pmbrunelle:


There is no need for a 3rd washer with these measurements; I think there is enough difference.



Then what should I do? It’s still leaking. What’s worse is it’s coming out of the bleeder valve now that I haven’t touched since I got the caliper
Patrick AUG 20, 11:13 PM

quote
Originally posted by Doggo:

Then what should I do? It’s still leaking.



Is this with two or three washers per side?


quote
Originally posted by Doggo:

What’s worse is it’s coming out of the bleeder valve now that I haven’t touched since I got the caliper.



Did you try tightening it?