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Old 16th November 2019, 13:23   #1
Fred Byrne
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Rover 75 Saloon

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Default Engine Timing inlet camwheel

Rover 75 2.5l
I inherited this car from my brother who was offered only scrap price when trading it in for a new electric machine. Good luck to him I say! On listening to the engine sound i realised that there was a problem with timing; it just didn't sound right. I hvae now got to the nitty gritty problem. Who ever fitted the last timing belt not only fitted a belt which was too long but also lost the engine timing. My problem is that he fitted the camwheel on the rear shaft with the part number facing inwards towards the engine block and the cam wheel on the front shaft he fitted the cam wheel with the part number facing out from the engine block. Obviously he was 50% correct!! I have a set of the proper timing tools. When I fit the locking tool to the front shaft (ie the one wth the part number facing out wards) and I check the rear cam wheel marks I find the inlet cam mark on the rear camwheelat about 20 degrees to the left of the correct position whereas the exhaust cam wheel mark is correct. What do I do? This is the first time that I have worked on this car so am not overtly familiar with it. Advice would be gratefully received.

Fred
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Old 16th November 2019, 15:27   #2
Fred Byrne
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Default Engine timing inlet camwheel

I think that I have solved this. The correct way round for the cam wheel is with the part number towards the engine block. Everything seems to line up then. Proof of the puddnig will come when I bar the engine over. Many thanks to any one who read this pearl of wisdom.

#Fred
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Old 16th November 2019, 16:06   #3
chris75
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2001 Rover 75 2.0 v6 Connoisseur Saloon

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Well done ; that didn't take long !
Did you get the right size belt ?
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Old 16th November 2019, 17:47   #4
SD1too
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Rover 3500 Vanden Plas (1984).

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Quote:
Originally Posted by Fred Byrne View Post
When I fit the locking tool to the front shaft ... and I check the rear cam wheel marks I find the inlet cam mark on the rear camwheel at about 20 degrees to the left of the correct position whereas the exhaust cam wheel mark is correct. What do I do?
Hello Fred,

It's been discovered that, with the flywheel/drive plate pin inserted on a correctly timed engine, the rear sprocket marks don't quite align. This isn't a fault and it isn't covered by the workshop manuals.

So, to remove the rear sprockets with their belt, it is first necessary to remove the flywheel/drive plate pin and turn the engine very slightly until the rear sprocket marks align.

I thought that you'd like to know that otherwise you'll think it's impossible to time your engine correctly.

By the way Fred, how did you come to the conclusion that the front belt is too long?

Simon
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