Cherry Blossom - Restoration 1990 XJS V12
#1361
(I pay about $3.00 for six litres at Costco--imported Canadian stuff, too.)
(I pay that because my wife is fussy and won't touch tap water.)
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orangeblossom (08-21-2017)
#1362
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orangeblossom (08-21-2017)
#1363
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orangeblossom (08-21-2017)
#1364
there were 3 xjs at the show, one of the rarest turnouts of all cars there. loads of mk2 jags, ford pops, and a large number of vauxhalls and american tin.
Good afternoon out, going to Lavenham next sunday, a smaller show but still good as we went there a couple of years ago, only trouble was it lashed down all day. hope for better luck next sunday. When we went before there was a turnout from the xjs club with a stand.
I might actually dig mine out of the garage and go in it
Good afternoon out, going to Lavenham next sunday, a smaller show but still good as we went there a couple of years ago, only trouble was it lashed down all day. hope for better luck next sunday. When we went before there was a turnout from the xjs club with a stand.
I might actually dig mine out of the garage and go in it
Lavenham
Was that where they filmed 'Lovejoy'? Ian Mc Shane.
#1365
The Mustang belongs to my brother, he's the 2nd owner.
It was bought out of the USA as LHD and converted to RHD with a new handmade firewall, so this is not a remote RHD conversion. It's also got rack & pinion steering.
And as it sat there 700hp............................................. . it was scary to drive.
It was bought out of the USA as LHD and converted to RHD with a new handmade firewall, so this is not a remote RHD conversion. It's also got rack & pinion steering.
And as it sat there 700hp............................................. . it was scary to drive.
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orangeblossom (08-21-2017)
#1366
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orangeblossom (08-22-2017)
#1367
Breaking Bad!
Breaking Bad
What could be wrong?
Daim may have the Answer!
What could be wrong?
Daim may have the Answer!
Yesterday I decided to take 50 Shades my Grey XJS out for a long run, as with 'Cherry Blossom' now back on the road I really hadn't used her for a while.
'50 Shades' is my 89 and 'Cherry Blossom' is my 1990.
Where apart from some small details, both Cars are the same and both have ABS.
But Three Years ago the ABS failed on my Grey Car and very nearly Spun me off the road and so I picked up a Brand New Valve Block put it on.
I'm pleased to say that really solved the Problem, the Brakes are simply Awesome and enough to give a 'Tailgater' a real Heart Attack.
As if the need arises and you put the Anchors on, these Cars can Stop a lot quicker than most people think.
So using that Awesome Braking Power as a Bench Mark, I then made a Comparison with the Brakes on 'Cherry Blossom'
And sorry to say that although both Cars have exactly the same ABS Braking System, the difference between them is like 'Chalk and Cheese'
There is No Slack in the Pedal of my Grey XJS, you only have to touch it and the Brakes are there.
Not so on 'Cherry Blossom' as there is about and inch of Travel just before they bite.
This has been doing my head in and I've tried every trick in the book to get them as good as they are on my Grey XJS.
Suspecting Air in the System, at first I thought that one of my home made Brake Pipes may have been leaking a small amount of Air.
So I put on some New ones but that didn't make any difference and in case I forget to mention it, I have Bled those Brakes a dozen times.
Where today I went even further and Bled every single connection on the Braking System I could find.
High pressure side/Low pressure side as well as every connection on the Brake Master Cylinder Actuator.
The end result was that it didn't make the Slightest difference.
The Brakes not only work but they work great, the only problem being this extra inch of Travel before they bite.
Which to say the least is quite un-nerving, though just by Sheer Coincidence I think that 'Daim' today of all days has stumbled on the Answer.
Or at least the Cause of the problem.
So I am really hoping that Daim, can put some more flesh on the Bones and tell me how to fix it.
Another good reason to dump the ABS, which may have worked great when the Car was New but 25 Years later, maybe not so much.
'50 Shades' is my 89 and 'Cherry Blossom' is my 1990.
Where apart from some small details, both Cars are the same and both have ABS.
But Three Years ago the ABS failed on my Grey Car and very nearly Spun me off the road and so I picked up a Brand New Valve Block put it on.
I'm pleased to say that really solved the Problem, the Brakes are simply Awesome and enough to give a 'Tailgater' a real Heart Attack.
As if the need arises and you put the Anchors on, these Cars can Stop a lot quicker than most people think.
So using that Awesome Braking Power as a Bench Mark, I then made a Comparison with the Brakes on 'Cherry Blossom'
And sorry to say that although both Cars have exactly the same ABS Braking System, the difference between them is like 'Chalk and Cheese'
There is No Slack in the Pedal of my Grey XJS, you only have to touch it and the Brakes are there.
Not so on 'Cherry Blossom' as there is about and inch of Travel just before they bite.
This has been doing my head in and I've tried every trick in the book to get them as good as they are on my Grey XJS.
Suspecting Air in the System, at first I thought that one of my home made Brake Pipes may have been leaking a small amount of Air.
So I put on some New ones but that didn't make any difference and in case I forget to mention it, I have Bled those Brakes a dozen times.
Where today I went even further and Bled every single connection on the Braking System I could find.
High pressure side/Low pressure side as well as every connection on the Brake Master Cylinder Actuator.
The end result was that it didn't make the Slightest difference.
The Brakes not only work but they work great, the only problem being this extra inch of Travel before they bite.
Which to say the least is quite un-nerving, though just by Sheer Coincidence I think that 'Daim' today of all days has stumbled on the Answer.
Or at least the Cause of the problem.
So I am really hoping that Daim, can put some more flesh on the Bones and tell me how to fix it.
Another good reason to dump the ABS, which may have worked great when the Car was New but 25 Years later, maybe not so much.
#1368
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orangeblossom (08-23-2017)
#1369
Right here Daim:
Any idea how to Fix it or find the Circuit that they are describing in your book.
Juat a side indormation... I was reading Jaguar's diagnostic measures regarding a hard pedal. This is, according to the book, a sign of a failed rear brake circuit. As the rears aren't directly operated by the master cylinder, the pedal will get firm and have little travel. If the fronts fail, the pedal will get a longer travel.
- long travel, fronts
- hard pedal, rears
Just some 'T M Y K' stuff
Any idea how to Fix it or find the Circuit that they are describing in your book.
Juat a side indormation... I was reading Jaguar's diagnostic measures regarding a hard pedal. This is, according to the book, a sign of a failed rear brake circuit. As the rears aren't directly operated by the master cylinder, the pedal will get firm and have little travel. If the fronts fail, the pedal will get a longer travel.
- long travel, fronts
- hard pedal, rears
Just some 'T M Y K' stuff
#1370
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orangeblossom (08-23-2017)
#1371
Hi Daim
Cheers!
But as this Car has only done 25,000 Miles from New, I'm thinking it could be a Circuit, rather than some actual Mechanical Wear.
So wondering if I will have to replace, Yet another 'Valve Block'!
Unless there is a Fix you know of in your Book somewhere.
I might just pull the ABS Fuse and see if that makes any difference to the Brake Travel.
While the Brakes are working fine, that extra inch of Travel seems to 'Mimic' a Soft Pedal which is somehow a bit disconcerting.
As I have Bled every drop of Air out of the System.
New Calipers/Brake Pads/Brake Pipes and everything else in between.
Cheers!
But as this Car has only done 25,000 Miles from New, I'm thinking it could be a Circuit, rather than some actual Mechanical Wear.
So wondering if I will have to replace, Yet another 'Valve Block'!
Unless there is a Fix you know of in your Book somewhere.
I might just pull the ABS Fuse and see if that makes any difference to the Brake Travel.
While the Brakes are working fine, that extra inch of Travel seems to 'Mimic' a Soft Pedal which is somehow a bit disconcerting.
As I have Bled every drop of Air out of the System.
New Calipers/Brake Pads/Brake Pipes and everything else in between.
#1372
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orangeblossom (08-23-2017)
#1373
OB.
what about the Low pressure side bleed of the ABS Pump/Accumulator
I hear that help greatly with pedal travel... the prceedure is here on the forum some where..
I Pay 5 dollar for 2 24 packs of bottled water...
I normally pay 2.50 to 2.80 a gallon for gas ( I commonly use a fuel reward and get a dollar off a gallon putting me at 1.5o to 1.80 a gallon)
Though we just Visited TN to watch the eclipse and when I put my code in they were going to let me take my full 1700 points off that would have been 1.70 off a gallon I freaked! and pressed NO as I only need to top up (about 6 gallons) I guess the limit is different in TN...
The Eclipse was AWESOM!
what about the Low pressure side bleed of the ABS Pump/Accumulator
I hear that help greatly with pedal travel... the prceedure is here on the forum some where..
I Pay 5 dollar for 2 24 packs of bottled water...
I normally pay 2.50 to 2.80 a gallon for gas ( I commonly use a fuel reward and get a dollar off a gallon putting me at 1.5o to 1.80 a gallon)
Though we just Visited TN to watch the eclipse and when I put my code in they were going to let me take my full 1700 points off that would have been 1.70 off a gallon I freaked! and pressed NO as I only need to top up (about 6 gallons) I guess the limit is different in TN...
The Eclipse was AWESOM!
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orangeblossom (08-23-2017)
#1374
#1375
OB,
As the car seems to be braking ok, I'd be more inclined to think it's either play in the linkages that actuate the lever to initiate in the Actuation module OR...
...you're getting minute amounts of kickback from the discs against the pads thus requiring fractionally greater pedal travel for the next application. It only requires a tiny amount of play in the bearings, or run-out of a disc for this to occur.
Even a very slight loss of rigidity in one of the flexi-pipes can cause the same effect as the initial fluid flow bulges the pipe before the fluid then causes the appropriate pressure to the caliper.
Just my 2p-worth. You'd really know it if you had front brake failure via the Actuation module!
Cheers
Paul
As the car seems to be braking ok, I'd be more inclined to think it's either play in the linkages that actuate the lever to initiate in the Actuation module OR...
...you're getting minute amounts of kickback from the discs against the pads thus requiring fractionally greater pedal travel for the next application. It only requires a tiny amount of play in the bearings, or run-out of a disc for this to occur.
Even a very slight loss of rigidity in one of the flexi-pipes can cause the same effect as the initial fluid flow bulges the pipe before the fluid then causes the appropriate pressure to the caliper.
Just my 2p-worth. You'd really know it if you had front brake failure via the Actuation module!
Cheers
Paul
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orangeblossom (08-23-2017)
#1376
That's an interesting idea!
Would you happen to have a Schematic that shows that Top mounting bolt.
#1377
#1378
Hi Paul
It could be the Linkages, as the Brakes are working fine but that extra inch of Travel is freaking me out.
Would you happen to have a drawing that shows which bolt to adjust.
Is there an adjustment, inside this Rubber Boot?
Can you adjust the Linkage where the Rubber Boot is, by undoing the 'U' Clip and winding out a Threaded Rod?
It could be the Linkages, as the Brakes are working fine but that extra inch of Travel is freaking me out.
Would you happen to have a drawing that shows which bolt to adjust.
Is there an adjustment, inside this Rubber Boot?
Can you adjust the Linkage where the Rubber Boot is, by undoing the 'U' Clip and winding out a Threaded Rod?
Last edited by orangeblossom; 08-23-2017 at 05:16 PM.
#1379
It won't be in the boot nor can it be adjusted. If you look at the pedal lever, it is connected to the rubber bellows and below that (on your picture ) has a screw with a nyloc nut. This screw goes through the mounting bracket into the pedal. In the pedal are two bushes. Iirc rubber like on the suspension. If dried out, a mm of play there will accumulate in about an inch at the bottom of the pedal...
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orangeblossom (08-24-2017)
#1380
It won't be in the boot nor can it be adjusted. If you look at the pedal lever, it is connected to the rubber bellows and below that (on your picture ) has a screw with a nyloc nut. This screw goes through the mounting bracket into the pedal. In the pedal are two bushes. Iirc rubber like on the suspension. If dried out, a mm of play there will accumulate in about an inch at the bottom of the pedal...
Cheers!
It's very awkward to get to but I'll try and check it out.
Thanks for your help.