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3 soor cosworth timing

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Old Jul 5, 2020 | 08:27 AM
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Question 3 soor cosworth timing

Hi a friend of mine has had a timing belt done on a 3 door, the engine now sounds like its got a rattle on the tappets any suggestions?
The engine didn't rattle before belt change! any help / advice would be great

thanks
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Old Jul 5, 2020 | 10:37 AM
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My advice. Don't drive it! Get someone else who knows how, to re-check timing. Tapping after belt change does not sound good and imo only comes from piston/valve contact.
disclaimer - i am not a mechanic.

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Old Jul 5, 2020 | 09:19 PM
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From: greece
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DONT START ENGINE!!!!
Like above,something is wrong with timing. Get an experienced person to check cam timing.
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Old Jul 13, 2020 | 04:36 AM
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There was a very common mistake back in the day to time a yb up on the bottom pulley timing marks, that is wrong it must be on the first peg after
very good chance this has happened
steve
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Old Jul 13, 2020 | 04:36 PM
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Originally Posted by The Youth.
There was a very common mistake back in the day to time a yb up on the bottom pulley timing marks, that is wrong it must be on the first peg after
very good chance this has happened
steve
Been there done that, I was like 21 at the time and tried to do it on a holiday camp, I did not have a clue what I was doing back then

As said, there is a notch before TDC, which indicates 16 BTDC (the ignition timing) hence NOT TDC!

As said, the timing is defiantly wrong, you only have to be a tooth out.

Do not start it again and check the timing, there is no excuse for a professional mechanic getting this wrong though!

At TDC, the rotor arm should be at 2 o'clock facing the scribe in the dizzy, the cam pulley arrows facing each other and the cam pulley lug should meet the metal on the block. There is also a half moon on the aux pulley.

Martin
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