martyn Posted June 29, 2015 Share Posted June 29, 2015 Will be doing an oil change this week. It's the first time I've done so on the caterham. Car is a sigma 150.. What torque should I refit the sump drain plug with? Is there a crush washer or similar that needs replacing? If so, what type and size do I need to get?What do people think of these magnetic drain plugs? Are they worth bothering with and if so, where can I get the right size?Thanks. Link to comment Share on other sites More sharing options...
DJ. Posted June 29, 2015 Share Posted June 29, 2015 I got the torque from Haynes Focus manual, I think it is about 25Nm, but will look it up when I get home if you don't get a certain answer. There is a rubber washer that should be replaced, I bought 20 off eBay quite cheaply. Duncan Link to comment Share on other sites More sharing options...
SM25T Posted June 29, 2015 Share Posted June 29, 2015 Rubber washer ? Dowty seal .... steel washer with bonded rubber seal in the centre ? Link to comment Share on other sites More sharing options...
DJ. Posted June 29, 2015 Share Posted June 29, 2015 No there is a groove in the plug head, and a rubber washer with a pear shaped profile sits in this. The normal dowty seal wouldn't work. Link to comment Share on other sites More sharing options...
Jonathan Kay Posted June 29, 2015 Share Posted June 29, 2015 Duncan: Do you have the link to that seal, please?Should this type be replaced each time?I don't know any disadvantages of magnetic plugs but I don't think there's any evidence for beneficial effects for modern engines with frequent oil changes. Obviously there's the small hassle of lining the car up N-S when you tighten them.Jonathan Link to comment Share on other sites More sharing options...
martyn Posted June 29, 2015 Author Share Posted June 29, 2015 The sump is a Caterham item. Does it follow the same size/fitment as a Focus Zetec SE or am I looking for something specific? Edit: Found these.. Are they in the right ballpark? I know they're complete plugs but does the fitment look correct?http://www.ebay.co.uk/itm/FORD-FOCUS-1-6-ZETEC-Engine-Oil-Drain-Sump-Plug-Bung-Washer-Kit-/251053340992?pt=LH_DefaultDomain_3&hash=item3a73f1f940http://www.fordpartsuk.com/shop/ford_engine_sump_plug_14mm_thread_f_1013938_c_407.htm Link to comment Share on other sites More sharing options...
slap_ed Posted June 29, 2015 Share Posted June 29, 2015 I've changed the oil on my old Sigma several times and never changed the rubber o-ring. Not a drip!You can't crush the rubber washer by overtigtening because it's in a recess. So unless it's damaged then it should be ok to use again. Link to comment Share on other sites More sharing options...
DJ. Posted June 29, 2015 Share Posted June 29, 2015 Yes those are correct Martyn.The ones I bought were from ebay, I replace it each time as they are cheap and it's a pain if it drips.Here are 5 for £2.60: http://www.ebay.co.uk/itm/FORD-ZETEC-Engine-VOLVO-JAGUAR-5-FIVE-Sump-Washers-OE-Repl-1005593-SW3x5-/171286130407?pt=LH_DefaultDomain_3&hash=item27e172eee7or 50 for £7.50: http://www.ebay.co.uk/itm/FORD-ZETEC-Engine-MAZDA-VOLVO-JAGUAR-50-FIFTY-Sump-Washers-OE-1-005-593-SW3x50-/171178623222?pt=LH_DefaultDomain_3&hash=item27db0a80f6And I've looked up the torque figure and it is 28 Nm. Link to comment Share on other sites More sharing options...
Bone Rat Posted June 30, 2015 Share Posted June 30, 2015 Hi,Same engine and did my own first oil change this winter. Wanted to install a temp sensor in the sump plug. Anyway used one of the oil sucky devices to drain it out first via the dipstick tube. Dead simple process.When I removed the plug no extra oil drained at all. From now on I'll probably leave the plug & sensor alone & just use the sucker. Much less messy and quicker.Would seriously consider that option if it's a regular ambition. Link to comment Share on other sites More sharing options...
Jonathan Kay Posted June 30, 2015 Share Posted June 30, 2015 Thanks, Duncan.At that price you could offer a Club Bulk Buy with a reasonable rake-off for NtL. Something like £1 per washer + postage. Members would buy 1 or 2 and save on the £2.60 and a bag of 50 would generate a surplus of £50 - £7.50 = £42.50.Do they fit anywhere else on any known 7?Jonathan Link to comment Share on other sites More sharing options...
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