Sandpiper

Noted and ordered, Kerrrrching - many thanks Dave.😁💰

Thanks DB - it's a shame the moment of inertia isn't ever specified, it would give a more realistic quantification of the likely effectiveness of swapping them.

I bonded the packing washers together and colour coded them port and starboard to make it easy to identify when under the car and less of a faff to get it back in. A podger is your best friend for this task when solo

Thanks Simon 👍

SLR gurus does anyone know much the stock flywheel weighs on the VHPD? Which TTV product would be an improvement.? Cheers.

Capito many thanks for an interesting read!

Does anyone know a source for the above? I have searched the web high and low. Judging by the price on CC website it would appear they are made from weapons grade unobtainium.🤑 254mm dia 17mm thick 29mm height 108mm PCD Bore hole size 63.4mm Many thanks

Hi RJ this is the assembly guide that I presume my SLR was built IAW, the blue sealant residue looks like Hylomar

Malcolm - you hit the nail on the head the 4 bolts on my release bearing guide tube were just over finger tight and the leak was past the inadequately clamped guide tube cork gasket- of interest there are different tq figures for these bolts 10Nm or 25Nm I think the higher figure is appropriate for the Caterham box. There was no leak past the selector shaft o ring. So the oil passes through the input bearing race and fills the void between the gearbox and the guide sleeve then enters the bell housing through the gap between the outside of the sleeve and the hole it passes through into the bell housing which then gets whirled by the clutch/flywheel and dirtied by clutch dust see pictures

Thanks Stu, I shall be using another support for the gearbox when I part the bell housing from it. Does anyone have a part number for the Selector rod O ring? it's not to be confused with this is it? FRONT SEAL - GEARBOX - 5 & 6 SPEED £18.29 VAT incl.£15.24 VAT excl.Reference: 1602036

Brilliant - thanks Malcolm. I have a small ratchet strap which loops round the lower frame tubes and supports the front of the bell housing very useful for aligning the Gbox and engine. 👍 Just saw this in the assembly guide too "6-Speed. Apply a thin layer of silicon sealant to the front face of the gearbox and to the 'O' ring around the selector rod. Ensure sealant is applied to all of the 'O' ring. Using the four M12 fine thread bolts, (polythene bag 'miscellaneous') and spring washers (ZGB14 item (3)) bolt the bell-housing to the gearbox. Tighten the bolts to 45 lbft (61 Nm)"

Dry sump 6 speed K series VHPD. I have my engine out to replace my Clutch bearing and investigate an annoying weep at the bottom of the Bell housing to engine junction. My first thought was crank rear main seal but after removing the flywheel this afternoon it revealed a bone dry front face and a very happy looking crank seal. The back of the bell housing is a different story with plenty of oil thrown around by the recess for the clutch arm. I am unsure whether the oil is from the gearbox as it looks more like engine oil i.e. dark and it doesnt appear thick enough. So I need to remove the bell housing from the gearbox to ascertain the source of my leak.. The question is can this be done with the gearbox in situ? the bell housing appears to be held onto the gearbox by 4 large headed bolts that are recessed into the forward face of the bell housing. If anyone has a picture or a drawing I'd be interested to see it. Engine and gearbox appear to treated like a single unit by all the assembly guides I have seen.

Many thanks for the info on this. I have the new speedo fitted and running perfectly, I have the additional Earth at the sensor to car loom connector by the O/S front damper and that is connected to the Brake T junction Earth point. The only Tomfoolery was with the Red lead harness pin 3 which for the modern sensor requires +12V for the pull up resistor for NPN sensors. I started with it disconnected no joy - then grounded it no joy connected it to pin 1's power supply lead and job done. The speedo is very smooth in operation and is extremely accurate at motorway speeds.

To follow up on David's post. Caerbont sell a prewired connector harness part number 41-762-285-00 for £13.60 plus VAT this connects to their programmable speedos. I imagine this may be a tad cheaper than buying from CC 😁 Caterham speedo part number 71255 are now supplied EES3-1B32-00B Caerbont gauges which are programmable via the rubber button on dial face (no dip switches) as per their support instructions Electronic (2004 to date ) Note the B which means the later circuit board to EES3-1A32-00B which has the dip switch array in the back for configuring.

Thank you David