timing belt conversion

Post by **cliff** » Sat Aug 26, 2006 8:05 pm

there's a morris just advertised on ebay that says: 'converted to timing belt so is super quiet and smooth'.

as mine's quite rattly i was wondering if anyone else has done this and how easy/difficult it was?

Post by **Onne** » Sat Aug 26, 2006 8:08 pm

I think he may mean duplex timing chain. I have yet to see a timing belt on a minor, other than the twin OHC conversions

Onne

Post by **paulhumphries** » Sat Aug 26, 2006 8:18 pm

I've seen these before.
One magazine did a review of fitting and straightforward.
Try Mini specialists for a source.
Cann't remember price but seem to think it was "ouch" money

Paul Humphries

Post by **Onne** » Sat Aug 26, 2006 8:21 pm

Really? I would like to see that done! Would involve a lot of work wouldn't it?
New timing chain (oops belt) cover
New sprockets
And a belt that actually fits, I have never seen any timing belt as small as the chain on an A-series

Post by **paulhumphries** » Sat Aug 26, 2006 8:31 pm

Had a quick look and found this -
http://www.minispares.com/Product.aspx?kid=34804

Paul Humphries.

Post by **Onne** » Sat Aug 26, 2006 8:34 pm

That looks very nice!

Even though this conversion looks nice too:
http://www.miniman.com.au/bmw.htm

Post by **RogerRust** » Sat Aug 26, 2006 8:38 pm

Very nice but expensive, I'm going for duplex as per ESM - I don't think I worry about the vernier adjustable one.

Post by **nebogipfel** » Sat Aug 26, 2006 8:39 pm

Belts may look pretty and be quieter but I'll stick with a chain (preferably duplex)

Chains may rattle but they rarely fail.

I've seen a belt break at 14K miles from new

Timing chain noise is part of the "A series" charm

John

Post by **Onne** » Sat Aug 26, 2006 8:50 pm

I wouldn't do it either, but it is nice to know that you can, isn't it?

The size of the belt reminds me of my moped engine.

Post by **GAS** » Sat Aug 26, 2006 10:56 pm

I had considered fitting this type of belt to my 1275cc engine untill the man behind the counter had told me that the oil seals were a week spot, as the oil had to be kept behind the engine front plate ,there are now two oil seals insted of the one behind the bottom pully.
I have since fitted a duplex chain on adjustabe gears with a tentioner from a metro.
so far so good

GAS.

Post by **pim123** » Sat Aug 26, 2006 11:31 pm

John, mine did...just a few weeks ago and the small gear was in two halves and I missed two teeth of the large gear... costed me 600 euro to repair....

Post by **bmcecosse** » Sun Aug 27, 2006 8:42 am

I sold on a belt conversion kit that came with one of my Mini engines. Really no need for this on a road car - and the dodgy seals and the possible effects on the belt of oil leakage made it undesireable for me. Duplex is fine.

Post by **crossword** » Sun Aug 27, 2006 4:20 pm

Just for info , I fitted a duplex chain to my Minor last weekend. It was from MGM & involved removing two of the bolts which hold the front engine plate in position , countersinking the holes & using the two supplied countersunk Allen bolts . This is because left in place the standard bolts will foul the crankshaft pulley . If the engine is out this is relatively easy , with the engine in situ , I needed to remove the front engine plate . If you do this , you will need to buy the gasket between the engine & front plate or if it is saturday evening you will need to make a gasket from thick brown paper as I did . Good Luck !

Post by **bigginger** » Sun Aug 27, 2006 7:10 pm

I did the same yesterday. Even with the engine out of the car, remove the front plate, unless you want to risk filings going where they shouldn't.

Post by **ian-s** » Mon Aug 28, 2006 10:34 am

Unfortunately the MGB gears are half a tooth different timing to the cooper S / Metro type , but I dont suppose it will matter much on a road engine.

Post by **bmcecosse** » Mon Aug 28, 2006 1:55 pm

Where did the MGB gears come from ?? Did I miss something ?
Even when using the c/sunk screws you still need to be careful. Some duplex chains have a joining piece with slightly longer pins through the chain. If this is fitted with the extra length towards the engine - they can rub/catch/be very close to the c/sunk screw heads - so it's importamt to fit the chain with these longer legs facing away from the engine front plate.

Post by **chickenjohn** » Mon Aug 28, 2006 4:40 pm

Yes, I agree, better off with a chain, timing belts + Moggie leaking front oil = valves hitting pistons!

Post by **Packedup** » Mon Aug 28, 2006 6:49 pm

chickenjohn wrote:Yes, I agree, better off with a chain, timing belts + Moggie leaking front oil = valves hitting pistons!

Oh I don't know - Belts can bne OK on an A series apparently ;)

http://www.7ent.com/images2/KAD1011001.jpg

Post by **pim123** » Mon Aug 28, 2006 7:59 pm

Wow, Packedup...what is that for an engine ?... does that go in a Minor ?

Post by **Onne** » Mon Aug 28, 2006 8:02 pm

that looks like a twin cam 16 valve BMW head put on top of an a series.

Might go in a Minor or Mini, or really any a-series engined car

Morris Minor Owners Club

timing belt conversion

timing belt conversion

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