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XK150 rev counter drives

XK150 Rev Counter Drives

Also are all 150's tac drives (rev. counters) mounted to the intake side? Thanks. - Skip Smith

Skip: re your query re the side of the rev counter drive - some notes: XK150 PB 1/390: cable for the earlier type rev counter was C12860 (DF.1110/06/16) with inner cable 7353 and outer cable 7354 - the "16" may have indicated the length. There was an angle drive gearbox for this, C9914 (BG.1301/00). Rev Counter - drive for electric operation (XK150): XK150 - (1/18) The rev counter was cable driven (early) and electrically driven (generator) later. The changes were at (RS) 820043/832088 (FHC) 824905/836233 (DHC) 827373/838272. This necessitated a rev counter gearbox on the RHS camshaft (inlet side) and the generator for the later cars on the same side of the engine (I22), and a different cam cover. I assume that the drive was from the exhaust side for 120/140/150 until the electrically driven 150 (late). Anyone disagree? - Regards, John Elmgreen

John, "XK-News" (Spring 1997) from an article signed Guy Broad: "...., an angle drive (gearbox) was fitted to the INLET cam shaft drive,.." Just a quotation - Regards, Martin Jacobsen

My early-ish 150 (S824187, V1910-8) has a mechanical tach drive on the inlet cam. The Mk1 service manual also seems to show the tach drive on the inlet side. Regards. - Mike Morrin

John, My chassis is a S837441 would that make it a cable drive from the exhaust side? Thanks. - Skip Smith

Re the side of the rev counter drive for the 150 - I was being lazy (you should never make assumptions here!) and those who have pointed out that the 150 was driven from the inlet side are of course correct, as there is that black right angled gear bizzo at the back of the cam cover. - Regards, John Elmgreen

John - My 150 OTS (S831238, V5160-8) has the mechanical tach with the black Smiths gearbox driven from the inlet camshaft. - Bob Oates

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