Engine noise

[HandyAndy]

Originally Posted by flyerncle

Older engines ran on thicker oil so it may pay to change it ,they were prone to breaking valves springs but this would give a miss and its worth checking the cam lobes for wear.
If I remember rightly it ran ok before its last rights so possibly its oil related.

Edit see below

Thanks Paul,

what oil do you suggest please?

Yes, the donor car ran really well, When I collected it, I drove it home almost 200 miles & then 35 miles to you before it took its last gulp of go go juice for a while

I thought maybe something is sticking, as its the first time its been fully up to temp in 13 months.

I,ll change the oil & filter tomorrow

cheers
andy

[twinturbo]

oooohhh.......

[twinturbo]

ahhhhh ... memories.....


TT

[twinturbo]

in 1999 I bought a clean looking 1.8 LX at auction for £250, it idled wonderfully quiet. but when I hit 2.5K i Got a rattle..

I went through everything short of the camshaft ( bought it but never fitted it as I stole my bro's engine )..

The most likely culprit is a failed follower, they were available from motor factors back then for about £16. Make sure they know it's a 1.8 CVH as 1.6 ones that cost £4 are no good.

It's an easy job, may be worth pulling them right after running and then checking the lenght with a micrometer to see if one is flaccid.

TT

[snapper]

Sometimes an exhaust gas leak from manifold to head can sound very much like valve tapper noise

[HandyAndy]

Originally Posted by snapper

Sometimes an exhaust gas leak from manifold to head can sound very much like valve tapper noise

Hmmm, now thats got me thinking, maybe as i,ve just welded up a home made exhaust down pipe etc etc , thanks Snapper I,ll check that tomoorow too

on the plus side of things, it sounds lurrrrrvly with the silencer in place

cheers
andy

[drury318]

Hi Andy, might be stating the obvious here but if the tickover is too high then just turn the idle screw down a bit?... and as Vern says the rattle will be just a hydraulic tappet or two, renew the set and you will almost certainly cure it, and use 10/30 oil. Dennis.

[HandyAndy]

Thanks Dennis & Adrian, great info here

yes I have blocked off the breather that goes from the "frying pan " to the inlet manifold, I,ll check all the diaphragms tomorrow & with a bit of luck, thru a process of elimination of the all the points raised I,ll find the culprit,

I,d really like my new tyres so hopefully this won,t break my squeeky budget

thanks guys

cheers
andy

[spud69]

Hi Andy,

You got your prop shaft yet?

Also got some spare hydraulic lifters if you need to try and replace any.

Regards....AndyH

[antonia800]

its all to do with the oil you must use a mineral oil in the cvh 10/40 dont be tempted by performance oil, duckhams do a good one (from my time racing a XR2) came of track ratteling like a bag of spanners changed the oil quiet as a mouse brilliant