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Old 07-03-2021   #1
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tempra SW 2.0L DOHC timing belt broken.

Well it finally happened....timing belt snapped.
Need to find out if the 159A6.046 engine Tempra 1995 2.0L engine is a interference or non interference engine. Can not find a definitive answer anywhere. I've a nasty feeling it's a interference engine. If so I'll scrap it after 25 years of great motoring. Installing a new cam belt (if now available) seems to me rather tricky what with removing cam cover(extremely tight for room) and not knowing where the various timing markings are for this engine.
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Old 07-03-2021   #2
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Re: tempra SW 2.0L DOHC timing belt broken.

Quote Originally Posted by tempra1995 View Post
Well it finally happened....timing belt snapped.
Need to find out if the 159A6.046 engine Tempra 1995 2.0L engine is a interference or non interference engine. Can not find a definitive answer anywhere. I've a nasty feeling it's a interference engine. If so I'll scrap it after 25 years of great motoring. Installing a new cam belt (if now available) seems to me rather tricky what with removing cam cover(extremely tight for room) and not knowing where the various timing markings are for this engine.
If it is the 8v twin cam(Lampredi design) it may be a safe engine.
If it's 16 valve it is not safe .
Post a picture
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Old 07-03-2021   #3
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Re: tempra SW 2.0L DOHC timing belt broken.

https://www.mirafiori.com/model/tbelt/

I can't think of auxiliary shaft referred too in the above but I believe it is a similar engine to yours , yours may not have the aux shaft referred to.
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Last edited by jackwhoo; 07-03-2021 at 19:26.
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Old 07-03-2021   #4
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Re: tempra SW 2.0L DOHC timing belt broken.

Actually not a bad engine to do a belt on.

Special note crank pulley bolt is REVERSE threaded!
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Old 07-03-2021   #5
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Quote Originally Posted by jackwhoo View Post
https://www.mirafiori.com/model/tbelt/

I can't think of auxiliary shaft referred too in the above but I believe it is a similar engine to yours , yours may not have the aux shaft referred to.
Counter.rotating balance shaft I suspect
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Old 07-03-2021   #6
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Re: tempra SW 2.0L DOHC timing belt broken.

Quote Originally Posted by varesecrazy View Post
Counter.rotating balance shaft I suspect
Hi Charlie,

I looked a little further after my reply.

The auxiliary shaft drove the semi vertical distributor shaft + oil pump and has an eccentric lobe-possibly for mechanical fuel pump.

I'm guessing that when the distributor moved to the end of a cam shaft(transverse applications) that the oil pump drive moved to crank nose. Auxiliary shaft deleted.

It could indeed Have counter rotating vibration reduction shafts, these don't foul the crankshaft.

Heck of a good engine.

Best wishes

Jack
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Last edited by jackwhoo; 07-03-2021 at 22:03.
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Old 07-03-2021   #7
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Re: tempra SW 2.0L DOHC timing belt broken.

Can the engine turn over on the starter? If not then they've probably collided.

if it's non-interference I would have thought you could turn the camshaft with a socket independent of the crankshaft.

If you can get the head off, repair is a possibility, with no external material damage could be limited to bent valves.
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Old 07-03-2021   #8
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Re: tempra SW 2.0L DOHC timing belt broken.

Quote Originally Posted by jackwhoo View Post
Actually not a bad engine to do a belt on.

Special note crank pulley bolt is REVERSE threaded!
Same as the TD. I remember attacking it with a breaker bar anti clock-wise and breaking the nut clean off.
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Last edited by jonti; 07-03-2021 at 22:36.
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Old 08-03-2021   #9
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Re: tempra SW 2.0L DOHC timing belt broken.

OK.....first thanks to you all with great information.(crank pulley bolt)

1)It's an 8 valve version engine
2)It does have a counter balancing belt/shafts.(ePER states I have them)
3)It does turn over very easily without fouling anything.(I might have stuck lucky)

Any tips regarding removing cam/timing cover (hardly any room for bottom nuts)
and timing potions of cams/crank/balancing shafts would be appreciated before I start.
As you can tell I'm an at home car fiddler who usually only carries out own servicing
and simple repairs but willing to have a go at this.
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Old 08-03-2021   #10
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Re: tempra SW 2.0L DOHC timing belt broken.

Hi ,

8valve good news I believe it is a safe engine.

The marks for the cam pulleys are on inside of pulleys(engine side) and are viewed/aligned by little windows in the engine side of the belt cover(not far number1 spark plug lead)

The anti vibration shaft timing markings are not great.

You are going to need a manual/link to a manual to do this job. Unless someone has written a how to with photos already.

I don't think you have to undo the main crank pulley bolt as the pulley is retained by small bolts into the crank sprocket.

Have a look on lancia websites your engine was common on lancias dedra/ thema / delta

Cheers
Jack
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Old 08-03-2021   #11
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Re: tempra SW 2.0L DOHC timing belt broken.

The Linsday Porter book should cover it..

Tbh

Our local specialist did ours back in the day..
I seem to recall they drained the coolant..
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Old 08-03-2021   #12
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Re: tempra SW 2.0L DOHC timing belt broken.

Again thanks to all that responded.

Will dig deeper before starting so I have all the info. (lancia, etc websites as mentioned).

Regarding draining of coolant (rubber hoses and water tank) ......I can see why they did that to get at removing cam cover, but I'll probably attack it by removing the front offside wheel arch cover.....unless you know better.

Let my know if you remember anymore tips.
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Old 08-03-2021   #13
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Re: tempra SW 2.0L DOHC timing belt broken.

I bought my 92 sw 2.0 with knocking bigends..
turned expensive.. new crank required

Once I'd run it in I got the belts done..
The low coolant light came on when driving home.. so had obviously been apart and 'selfbled' as I drove

The Porter manual covers the tipo and tempra..
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Old 12-03-2021   #14
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Re: tempra SW 2.0L DOHC timing belt broken.

Would just add as I've not researched this engine in detail but on the 130TC and other 2L engines the aux shaft that used to drive the distributor HAS TO BE TIMED as the shaft has a cut out section to allow the piston big end to pass the shaft without interference.

To my knowledge Fiat/Lancia engines with balancer shafts had a separate drive belt to the main cam shaft drive belt.
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Last edited by s130; 12-03-2021 at 18:15.
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Old 12-03-2021   #15
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Re: tempra SW 2.0L DOHC timing belt broken.

Quote Originally Posted by s130 View Post
Would just add as I've not researched this engine in detail but on the 130TC and other 2L engines the aux shaft that used to drive the distributor HAS TO BE TIMED as the shaft has a cut out section to allow the piston big end to pass the shaft without interference.

To my knowledge Fiat/Lancia engines with balancer shafts had a separate drive belt to the main cam shaft drive belt.
If it has the balance shafts it doesn't have the aux shaft.

Good news.
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