My mate picked the bike up from Kevs in his van the other day and took it to his workshop, because it was slashing down.
He has a tyre fitting machine and the new Bridgestones needed fitting.
He phoned me to let me know that when he removed the rear wheel, the rear pads fell in bits, so new front and rear pads were ordered and they have arrived today.
So all being well, i should be going over to pick the bike up tomorrow at some point.
Anyway, i got the info off Kev yesterday and for those of you who may be interested, here are the results.
Fault find: No 3 cylinder not sealing (valve seat rough). Remove head, grind in, clean and re-shim all 16 valves to correct clearances. New head gasket fitted.
As came in, leak rates were: 1 2 3 4.
4% 6% 35% 4%
After work, No 3 --------------------------6%
All bores tested by vac [Max on day 12" Hg] All same at 8" Hg now.
(Pump blocked)
No 3 plug had not been seated in head, or been changed for some time (rusty).
This caused hours of extra work to get new plug to seat down to bottom of thread. CR9E fitted with copper grease.
Coolant: This type of coolant was suspect, IE; unknown, so flushed and re-filled with with Good oat alloy maximum protection grade.
Valve clearances: Finished clearances and shims: 21/30.
EX.
164 - 170 - 172 - 169 - 166 - 170 - 168 - 170.
.29 - .22 - .22 - .22 - . 23 - .23 - .22 - .22.
11/20.
IN.
182 - 185 - 181 - 178 - 182 - 182 - 181 - 186.
.17 - .11 - .11 - .15 - .13 - .14 - .15 - .16.
New valve seals fitted.
New inlet rubbers fitted. All needed work to match head.
Work done with air grinder air tool.
Carbs stripped and cleaned, re-jetted to modified air box and high flow foam air filter.
This can be washed in warm soapy water each 4000 miles, dried and re-used.
Pilot at rest: 13.4 Air/fuel ratio.
30 mph: 13.5
50 mph: 13.6
70 mph: 13.6
77 mph: 13.7
90 mph: 13.7
110 mph: 13.4 *
130 mph: 13.1
150 mph: 12.8
* To obtain Max fuel economy, remove air corrector tube in airbox mouth.
Do NOT run over this speed(*) without the corrector.
It is safe to have the corrector in all the time if you wish.
Ignition:
1+4 2+3
15.11k sec. 14.80k
Coils ok.
Found to have distorted scope waveform (AC) while setting.
Also missfire at high speed.
This was cured with replacement Reg/Rec control box.
Note: Battery has one cell "bulge" due to this fault.
THE BILL!
Tune to suit + filter + jetting: £150.
Grind in all valves: £160.
Head gasket and post: £52.
Valve stem seals x 16: £40.
Shims (exchange) x 10: £40.
New coolant + flush: £8.
Reg/Rec cont box: £56.
Remove and replace head + clean: £80.
Match head to inlet rubbers: £20.
Fuel: £5.
Plugs x 4: £20.
TOTAL: £631.
EDIT:
Cam chain tensioner was found to have ball bearing at rear of spring.
This i thought was standard, however it would be unwise to remove this now without changing cam chain + spring, so re-fitted.
G ; )