JTD 16v timing marks - Alfa Romeo Forum
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(Post Link) post #1 of 11 Old 03-03-11 Thread Starter
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JTD 16v timing marks

hi all,

Im finishing off my rebuild with new timing kit.

The markings for the crank are not obvious. I trie lining up the notches at 0600, and the pistons hit.

Where are the proper mark for the crank positioning (cam positioning is ok, ) I have done the belt on this before, but cant rem how i did the crank side of it...:S?

thanks for any help.

Is it any different between 8v and 16v engines?
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(Post Link) post #3 of 11 Old 03-03-11 Thread Starter
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Hi,
I had seen the guide on alfaworkshop, but that shows the 8v engine.

Is it the same for the 16v ? in terms of the crank position
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You don't need any special tool.

Original new belt has marks for crankshaft and camshaft, match them with marks on puleys and that's it.

Last edited by losa; 04-03-11 at 07:06.
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Quote:
Originally Posted by losa View Post
You don't need any special tool.

Original new belt has marks for crankshaft and camshaft, match them with marks on puleys and that's it.
Not quite. Could still be out on the crank by 360 degrees(OP has performed a rebuild not one belt off one belt on). Also when the tension is applied you could put the timing out. Better to use the correct tools even if its just for piece of mind.

Is there a camshaft pulley referance mark on the head?? Or do you use a dowel??
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a crank that's turned 360 degrees is in the exact same position as before!
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Quote:
Originally Posted by Cuore_Sportivo_155 View Post
a crank that's turned 360 degrees is in the exact same position as before!
Yes sorry I haven't explained myself well. I'm talking of the relationship between crank and cam shaft. If, as losa suggests, you line up the marks on the pulleys with the marks on the belt after a rebuild and you have no referance mark on the crank to engine block then how can you be sure that No1 cylinder is at TDC.
In his first post the OP is saying the "pistons are hitting." If he is happy that the cam pulley lines up with its referance mark/dowel on the head, with the use of the crank tool I suggest, the crank pulley looks after itself.

Hope this makes sense.
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(Post Link) post #9 of 11 Old 05-03-11 Thread Starter
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I had mis marked the cam marking. The engine is timed now , lined up the belt marks from the crank position mark.

Engine is all back together now, just add fluids

EGR blanked, + no more Oil Vapour recirc - condenses in a catch tank.
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quick question re egr removal, is the egr flange on exhaust manifold the same gasket pattern as the egr valve inlet?
just got some gaskets for future removal of egr and pipework(and hopefully egt probe put on blanking flange) and the manifold end gasket looks very similar t egr valve inlet.
also let us know if you suffer much with longer warm up period and reduced mpg long term.
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(Post Link) post #11 of 11 Old 05-03-11 Thread Starter
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The two flanges on the EGR are 1 is square (to inlet), and 1 is a small oval (below / goes to heat exchanger) The exh manifold EGR gasket (that goes to the heat exchanger) is slightly larger than the underneath gasket on the EGR valve. (25% larger oval)
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