Having recently bought a beautiful 659cc Copen Turbo with a service history that's spotty at best, I decided on some serious maintenance. I don't have an original list of part numbers, and judging from the discussions here, most of you don't. So after having figured most of it out through the various threads on CW and a lot of supplier catalogues, I started ordering and decided that, for future reference I really should write the part numbers down somewhere. So here it is, hopefully it will be of help to some of you. I am fully aware that this is not a definitive list of the best, most economical or most widely available parts, it's just a list of what worked for me. Belts A total of three different belts are needed, ordered these thru a (former) Daihatsu dealership. Belt from waterpump to power steering pump: Daihatsu part no. 44318-97202, Mitsuboshi 3PK499 Belt from crankshaft to airconditioning compressor: Daihatsu part no. 90048-32095, no brand markings, but marked "A6 10033" Belt from crankshaft to water pump and alternator: Daihatsu part no. 90048-31027, Bando 4PK685 Oil filter A lot has been written about oil filters on the JB-engines, consensus appears to be that original or OEM filters 50mm high can be installed without taking off the grille. Blue Print ADD62108, filter marked Micro T9340 Spark plugs NGK 7658, IFR6J11 (most suppliers I could find list them by the IFR6J11 number) Air filter Daihatsu part no. 17801-97206, Nipparts J1326025 Fluids Gearbox oil Castrol 1502EE Syntrans Transaxle 75W-90 GL-4+ Brake fluid Castrol 1848085 Brake fluid DOT 4 Power steering fluid Castrol 1848060 Transmax Dex III Multivehicle (Dexron IIIH-compliant) Engine Oil Valvoline 5W-30 Synpower
Good info thanks Ronald, Why are there three belts please? Does one do timing - or is there a more normal internal timing belt/chain, and if so, do you know how often it needs to be replaced? Thanks Andy
Hi Andy, The JB-DET engine has a maintenance free timing chain. The three belts I replaced connect the airconditioning compressor (CP in the diagram below), crankshaft (CR), water pump (WP), alternator (AL) and power steering pump (PS).
Useful info for us newbies. Thanks for posting. Does anyone know if the belts are common to the 1300cc model ?
The 1.3 only has one belt, its a 4PK1755 And its quite easy to change, you only have to remove the front right tyre to get access
Excellent Ronald - thanks very much (and sorry for the slow reply), I've been looking for info on the timing chain on the L660 but couldn't find any - by 'maintenance free' do you mean it doesn't need adjusting - but does it have a replacement interval? Sorry if that's a daft question! How's access for the other belts - it looked very tight when I was prodding around just to test the tension on the one I could see... Regards Andy
Hi Andy, I don't believe daft questions exist, and if they did, thye would probably not be coming from people able to make such spectacularly wise choices in car buying as yourself. A maintenance free timing chain is designed to last as long as the engine it's part of. It is kept at the right tension by tensioners as well, so it needs neither replacing nor adjusting during the lifetime of the engine. As for access to the belts mentioned earlier, replacement required us to take off the front bumper and air filter housing, but was doable. Be sure to run the engine for at least five minutes after belt replacement and adjust the tension again before reassembling the air filter housing and bumper. This is required by replacement procedure and prevents you from having to take everything apart again once the belts wear in.
Timing chains usually last forever, but sometimes due to material quality deficits the timing chain can stretch or the tensioner can fail. Result: Chain skips a tooth or two, pistons meet valves and the engine becomes a big paperweight However, this is a rare phenomenon on Daihatsu engines
Great, thanks Gents, that's good news about the timing chain I took the bumper off and air filter out before - when I did the DSport intercooler and other plumbing, so that's not a difficult job Cheers Andy
Thank for the shopping list. Inherited car from sister who was original owner from new 54 plate. I'm ordering Oil and Air Filter and Spark Plugs. Just shopping about as Little Nellie goes in for her 1st service under my ownership. 80,000 mile service and MOT at the end of this month. Was new exhaust system last month. Its costly but its fun out on the road. A J
Hi there, Bought a nice red 659 as a selfish treat a week ago. Quite good condition except it doesn't ran for month... So I'm very glad you did this list as I think the previous owner didn't put the right spark plugs in. Also tried to check the belts numbers, the Aircon compressor one is a nightmare to read. So thank you! I'm happy to find an active forum to share and help. X.D
Thanks!!! This is my list so far - your spark plugs match what I also found: Here are list of Daihatsu part numbers for service items: Sump plug washer is: 90044-30281-000 For information the size of the washer is: ID = 12.2 OD = 19 THK = 2.3 (mm) Oil quantities required for a 659 turbo engine: If you're just changing the oil you need 2.5l. If you're changing the filter too you need 2.7l. 5W-30 Castrol Magnatec 5w 30 A1 Oil filter = 15601-97201-000 Air filter = 17801-97206-000 Spark Plugs NGK part number: IRF6J11 To get the oil filter off you might want to buy this tool: Daihatsu part number 09228-87201-000 - Wrench Oil Filter.
I just thought I'd post add on the end of this thread! I have made a special oil filter tool for the Copen, and am selling them on eBay for anyone who wants one. It's a fraction of the price of the OEM tool (and quicker delivery as not from Japan). This is low profile and small enough to fit through the engine mount so you don't have to take the front bumper off to get to it. Here is a link to the listing: Daihatsu Copen Oil Filter Removal Tool 66.6mm - Alternative for 09228-87201-000 | eBay
