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Advice On Tappets/valve Clearance Setting


magh

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Morning all, so yesterday was my first drive in the car from passing Iva 😬😬 all went pretty well apart from the top end. Had the car set up on a rolling road as its on r1 carbs and he set all the top end as it was well out from a full rebuild. Did all of 20 miles yesterday and now sounds like a can of stones again. He hadnt tightened the rocker properly one bolt was out and another half out so just hoping he hasnt tightened the lock nuts off properly and the clearances have changed.

 

Any advice on setting them ie in what order as Im going to have ago myself then I know its right I have the tools needed anyway.

 

Cheers Mike.

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The guy where you did the rolling road left it all loose?! I'd take it back to him and tell him to f*&^ing fix it!

 

Is it a bike engine? Car engines don't normally need valves adjusting, do they?

 

I've done the valves on my bike but they're locknut type, not shims. Shimmed valves are much more tricky - got to take off the camshafts and make sure you put them back together right - I wouldn't risk it if you're not experienced.

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Sorry its a pinto running r1 carbs, so its the tappets I need to adjust. I would take it back but means driving it there to then leave as it needs to be only done on a cold engine. And its a case of when it gets done there very old fashioned business lol and I also need to get it painted so would rather just give it a bash myself then atleast I know everything is tight. Mechanically Im good changed many a clutch and gearbox etc over the years just never really had to do bits in an engine lol.

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had this happen a few times on my pinto in the past need to make the lock nut fairly tight otherwise they do work loose. the settings are in the Haynes manual cant remember which way round (Inlet/Exhaust) they are but believe its 20 and 25 I always did mine until just tight enough so I could not pull the feeler gauge out without a struggle and then tightened lock nut as I found they always loosened a tad when you do up the lock nu. once tight feeler gauge should come out.

Edited by unclechief
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So I pulled the top off today and tested them all 3 were slightly off but only just and by Ben too tight 0.05 any way adjusted them and the noise was still no better. Decided to drop the oil now the engine had been run for a few hours and done that one trip as it came with oil in so wanted to make sure it had 20/50 in plus if there was any rubbish in there. Started it up no different. Ran it at 2000rpm for 5 mins. Still noisy but ever so slightly quieter.

 

Decided to risk it and take it for a blast down the road seemed ok so give it a little boot a couple of times came back and its perfect just as if was before the problem silent as anything.

Not sure whats going on but could a valve be sticking? Therefore the spring not doing anything hence the noise

Edited by magh
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Guest lotusPaul

What was the oil before you changed it?

 

Too thin and you will kill a pinto in seconds,Halfords classic is good for our old engines. I use it in Yank v8s and my lotus twincams.Dont forget to change the filter too.

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  • 2 weeks later...

Yes I set them at 0.20/0.25mm not thou.

 

Im unsure what the oil was in there apart from it been new from the rebuild.

 

Anyway had it out a couple of times and its fine so must of been something sticking.

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  • 4 weeks later...

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