aux shaft issue ?

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ga.spyder
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aux shaft issue ?

Post by ga.spyder »

First off,thanks for all the advice on timing my aux shaft.The diagram by Joe and Roy was helpful.Except for one little thing..... my aux shaft has no 'timing hole' ! :shock: Seriously
Image
Upon further inspection and cleaning,I found what appears to be a timing mark on this pulley.I assume this is the stock pulley for the 2L? I am also assuming I should set the mark at '1 o'clock',like the hole on the other type pulley? Thanks for any feedback
Last edited by ga.spyder on Sun Jan 25, 2015 4:19 pm, edited 1 time in total.
Craig Nelson

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Re: Help! New issue with the auxillary shaft

Post by redcars »

Any chance of getting a pulley from someone close. If not I am sure I can live without one of the ones I have. I think they are all the same. I have 2L and 1.8.
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Re: Help! New issue with the auxillary shaft

Post by wizard124 »

Do a search of my posts, look for "Crankshaft Seal". I am not able to post the link. There is a picture of my block with the Aux pulley removed. I was in the process of changing the timing belt also, the shaft was left as is with the crank at TDC.

Note the position of the alignment dowel. Pull your pulley and re-mark it to match (dowel in approximate position and pulley marked a 1 o'clock). This should get you close. Be sure to turn the engine by hand to ensure no interference.
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ga.spyder
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Re: aux shaft issue ?

Post by ga.spyder »

Thanks guys.I edited my original post,after I had a chance to clean and inspect a bit more :oops: I do have what looks like a timing mark etched into the pulley.Again,just not sure if that is the original pulley(and mark).I will have to do as wizard124 suggests and remove the pulley,and look for that alignment dowel.I am starting to regret pulling the head,just to address the bad valve seals and oil leaks.I am sure it will be worthwhile after I get her back on the road.
If anyone has a pic of their original 2l pulley,please post it or get me a link. I am of the opinion as redcars...I think they were all the same,but would like to verify that.
Craig Nelson

1982 Spider 2000...pride and joy
1981 Fiat X1/9..gone but not forgotten
1976 124 Spider..the self-healer
2001 BMW 328ci daily driver and track car
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Re: aux shaft issue ?

Post by spider2081 »

I think if you remove the pulley bolt you can see the alignment dowel without removing the pulley.
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ga.spyder
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Re: aux shaft issue ?

Post by ga.spyder »

Thanks David.Just to have it clear,the alignment dowel should be at 1 o'clock ? Then,go ahead and mark the pulley ? I have a mark on this pulley that is on the car,but I am not confident that it is correct.Especially since the pulley apparently isn't stock.
When I first owned the car it had been sitting up for years.Not knowing anything about the car,I paid a "Fiat specialist' to change the belt.The work was shoddy and I picked up the car making a terrible internal noise.To make a long story short,I left the place extremely pissed,didnt pay,and narrowly avoided an assault charge.I trailered it home,changed the oil (no evidence of metal),added some Lucas, and the noise went away. That was 6 years ago, and the car has never made the noise again :? I am now thinking that they had that aux shaft out of time somehow,and must have changed that pulley.
Craig Nelson

1982 Spider 2000...pride and joy
1981 Fiat X1/9..gone but not forgotten
1976 124 Spider..the self-healer
2001 BMW 328ci daily driver and track car
Fling It Around Turns !
quanta2
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Re: aux shaft issue ?

Post by quanta2 »

I know they say use 1:00 timing mark, but my distributor is on the other side of the engine being "timed" by the camshaft, not the aux shaft. Your pics also show the distributor on the other side of the engine. My question is, what are we really timing with the aux shaft? Just an oil pump and fuel pump on mine. There are some years that the aux shaft is running the distributor, which would make timing critical. Guess I am missing something.


ga.spyder wrote:Thanks David.Just to have it clear,the alignment dowel should be at 1 o'clock ? Then,go ahead and mark the pulley ? I have a mark on this pulley that is on the car,but I am not confident that it is correct.Especially since the pulley apparently isn't stock.
When I first owned the car it had been sitting up for years.Not knowing anything about the car,I paid a "Fiat specialist' to change the belt.The work was shoddy and I picked up the car making a terrible internal noise.To make a long story short,I left the place extremely pissed,didnt pay,and narrowly avoided an assault charge.I trailered it home,changed the oil (no evidence of metal),added some Lucas, and the noise went away. That was 6 years ago, and the car has never made the noise again :? I am now thinking that they had that aux shaft out of time somehow,and must have changed that pulley.
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ga.spyder
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Re: aux shaft issue ?

Post by ga.spyder »

My understanding is that the f.i. cars(like mine),distributor is on the other side of the engine and is timed by the cam.There is an electric fuel pump,so that obviously doesn't run off the aux shaft either.Just the oil pump on f.i. cars.The issue is the unused lobe on the aux shaft.If not timed correctly,it can hit and cause mucho damage.Some guys(like narfire) have ground that lobe off,and done something with the oil galley.If I cant figure the timing out,I may have to that route.
I really need to know if I can use that alignment dowel as my timing mark,and then properly mark the pulley.I have no clue as to why the stock pulley isn't on the car!
Craig Nelson

1982 Spider 2000...pride and joy
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1976 124 Spider..the self-healer
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Re: aux shaft issue ?

Post by 81SPIDERMATT »

ga.spyder wrote:Thanks David.Just to have it clear,the alignment dowel should be at 1 o'clock ? Then,go ahead and mark the pulley ?
I am going to say no .... based on the assumption that yours and wizards are the same .... if you look at his thread about crankshaft seal you will see a picture of everything removed and it was left in the positions of TDC ... you will see that his alignment dowel is actually at 7 oclock ... I do not know that the alignment dowel and the mark on the pulley are the same "clock location" ..... again based on the assumption that wizards is the same as yours and he did not move anything when removing the pulleys ... I have no other way to help as I did not remove the pulleys when doing my timing belt so I cant answer the relation of the mark on the pulley to the dowel

I have also read that guys will pull that shaft and grind down the lobe ... then it does not matter where you line it up
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Re: aux shaft issue ?

Post by RoyBatty »

Pull the fuel pump or the block of plate.
Use an inspection camera or light and mirror to look in at the lobe on the aux shaft.
Or if it can't be seen at all, carefully use a long screwdriver to feel the position of the lobe as you turn the shaft.
Align things as required once you determine the location of the lobe.
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Re: aux shaft issue ?

Post by spider2081 »

I would check with someone who builds these engines the see what the relationship of the dowel is to the timing mark on the pulley. I think the timing mark and dowel differ slightly. Maybe a phone call to Beek or Danny at Fun.
If you remove the pulley mounting bolt and the dowel is pretty close to being aligned with the mark on the pulley the mark on the pulley could be correct.
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Re: aux shaft issue ?

Post by azruss »

The interference area of the aux cam is not tight. When I had my aux shaft out, i rotated the crank and found the non-interference timing for the aux shaft is between 12:30 and 2:30. I know the aux shaft pulley is the same as either the intake or exhaust, i dont remember which one. Here are pictures of the intake and exhaust and the timing hole is very close to being aligned with the bolt pin. Using this, I would set the aux timing at 1:30, then rotate the motor by hand a few times to make sure it doesnt hit.
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FiatMac
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Re: aux shaft issue ?

Post by FiatMac »

ga.spyder wrote:Thanks David.Just to have it clear,the alignment dowel should be at 1 o'clock ? Then,go ahead and mark the pulley ? I have a mark on this pulley that is on the car,but I am not confident that it is correct.Especially since the pulley apparently isn't stock.
Craig,
I went out and looked at the 2L engine I have sitting on an engine stand. The aux pulley is solid and the alignment dowel and the timing mark are not on the same radial line as noted by azrus . The timing mark is approximately 15 degrees in a clockwise direction from the dowel location. So if using the dowel pin hole to time, the hole should be at about the 12:30 location to get the timing mark at 1:00.

The exhaust and aux. pulleys are the same.
Stan McConnell
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ga.spyder
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Re: aux shaft issue ?

Post by ga.spyder »

Thanks everybody for the advice.I cant think of any good reason why the pulley was changed to begin with.But,now I am left to deal with it!I am going to call Beek in the morning to get his feedback.Thanks,Stan for pulling that pulley off your motor.That is exactlty what I was afraid of.The car has been timed using this pulley and had done hard duty for 6 years(track days,auto-x,etc..),so I just don't want to make a costly error.As soon as it is warm enough to get back in the garage,I will remove that pulley and see how the dowel is in relation to the mark on my bastard pulley :D
Craig Nelson

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1981 Fiat X1/9..gone but not forgotten
1976 124 Spider..the self-healer
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Re: aux shaft issue ?

Post by wizard124 »

This is the picture I referred to. Crank at TDC and other pulleys properly aligned; aux pulley pulled:
Image
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