Are there any differences that would make fitting S2 uprights to a S1 car difficult, ie does any geometry change, steering track contact, ball joints etc.
The reason I ask is I have quite a few Girling 18/4, 16/4 calipers along with various AR/BR and CR too, the problem is all these calipers have a 3.5 inch mounts, non have 3 inch as the S1.
Just putting the question out there so I can decide whether to just buy new S1 Zues and be done.
Cheers, Sean.
S2 upright on a S1
#1 S2 upright on a S1
Sean
S1 2+2 1966 BW RHD
XK120 1954 comp LHD
S1 2+2 1966 BW RHD
XK120 1954 comp LHD
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#2 Re: S2 upright on a S1
Hello Sean,
No problem whatsoever.
Regards,
Bill
No problem whatsoever.
Regards,
Bill
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#3 Re: S2 upright on a S1
If uprating the front then you need to think about the rear.
Steve
Steve
Steve
69 S2 2+2 (sold) ..Realm C type replica, 1960 xk150fhc
69 S2 2+2 (sold) ..Realm C type replica, 1960 xk150fhc
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#4 Re: S2 upright on a S1
Thanks Bill, yes Steve the previous owner had put S2 calipers on the rear, whether these will pair with 18/4's I need to look into.
Sean
S1 2+2 1966 BW RHD
XK120 1954 comp LHD
S1 2+2 1966 BW RHD
XK120 1954 comp LHD
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#5 Re: S2 upright on a S1
Hello Sean,
One thing I forgot to mention, is that you will probably have to change the position of the mount brackets that are spot welded to the Rotor backing panels, but that isn't a big job.
Regards.
Bill
One thing I forgot to mention, is that you will probably have to change the position of the mount brackets that are spot welded to the Rotor backing panels, but that isn't a big job.
Regards.
Bill
Last edited by angelw on Tue Dec 09, 2025 7:55 am, edited 1 time in total.
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Series1 Stu
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#6 Re: S2 upright on a S1
Would Sean need to fit flat hub wheels if he changes the uprights, discs and calipers for Series 2 parts?
Regards
Regards
Stuart
If you can't make it work, make it complicated!
'62 FHC - Nearing completion
'69 Daimler 420 Sovereign
'93 Jaguar X300 XJR basket case
'93 Audi 80 quatrro Sport
If you can't make it work, make it complicated!
'62 FHC - Nearing completion
'69 Daimler 420 Sovereign
'93 Jaguar X300 XJR basket case
'93 Audi 80 quatrro Sport
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#7 Re: S2 upright on a S1
“Would Sean need to fit flat hub wheels if he changes the uprights, discs and calipers for Series 2 parts?”
No.
My S1 has S2 uprights. No idea when they were acquired. Before my stewardship of the car.
No.
My S1 has S2 uprights. No idea when they were acquired. Before my stewardship of the car.
Chris '67 S1 2+2
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