Engine re-build... strange noises!
-
- Posts: 50
- Joined: Mon Apr 16, 2012 3:55 pm
- Location: KENT UK
Engine re-build... strange noises!
Hi, I would be grateful for some advice concerning a bit of an unexpected noise coming from an engine currently being re-built
Its a '59, and we have replaced both the cams with new, and new pushrods. As the engine is turned over by hand, there is a clicking sound as both inlet cam lobes go over top (fully open). There is no sound coming from the exhaust side of things. The tappet clearances have been set correctly and checked, and the springs are not getting bound.
I'd be grateful for any help/suggestions what might be causing the noise, thank you.
Its a '59, and we have replaced both the cams with new, and new pushrods. As the engine is turned over by hand, there is a clicking sound as both inlet cam lobes go over top (fully open). There is no sound coming from the exhaust side of things. The tappet clearances have been set correctly and checked, and the springs are not getting bound.
I'd be grateful for any help/suggestions what might be causing the noise, thank you.
TTFN
Jon.
Jon.
-
- Member
- Posts: 628
- Joined: Tue Oct 24, 2017 12:05 pm
- Location: DEVON UK
Re: Engine re-build... strange noises!
Do you mean clicking as in a 'click click click' sound, or a single click? Can you identify whether it is coming from the valve or the cam end? Putting your ear against the handle of a long screwdriver with pressing the blade against various points on the engine while it is turned over can sometimes help to locate sounds.
Malc
Malc
-
- Member
- Posts: 373
- Joined: Wed Feb 01, 2012 1:22 pm
- Location: Vestland NORWAY
Re: Engine re-build... strange noises!
MalcW, going by the OP's description this has to be a single click.
Q, this is a long shot but I'd inspect cam follower bushes and valve guides for wear. Some parts appear to be moving laterally while under load ...
-Knut
Q, this is a long shot but I'd inspect cam follower bushes and valve guides for wear. Some parts appear to be moving laterally while under load ...
-Knut
- 1608
- Member
- Posts: 2493
- Joined: Mon Oct 05, 2009 1:00 am
- Location: ESSEX UK
Re: Engine re-build... strange noises!
You are aware that '59 push-rods are a different length to '60 onwards rods and not that easily come-by Just a long shot!
- Duncan
- Member
- Posts: 2128
- Joined: Thu Jul 10, 2003 1:00 am
- Location: HAMPSHIRE UK
Re: Engine re-build... strange noises!
Possibly excessive endfloat on the camshafts if you have not already checked it, not much to strip down to check just see how much play you can feel on the timing gear.
-
- Member
- Posts: 3547
- Joined: Sun Jan 01, 1995 12:00 am
- Location: ESSEX UK
Re: Engine re-build... strange noises!
Now in stock at Kettering.1608 wrote:You are aware that '59 push-rods are a different length to '60 onwards rods and not that easily come-by Just a long shot!
Roy
-
- Posts: 50
- Joined: Mon Apr 16, 2012 3:55 pm
- Location: KENT UK
Re: Engine re-build... strange noises!
Hi everyone, thank you for taking the time to reply to my query.
In answer to the posts..
Malc, its a single click coming from the cam end, as it goes over the lobe, inlet cam only, but on both lobes. There is no noise from the exhaust cams.
Knut- cam followers were replaced less than 1000 miles ago, and were not showing any signs of wear. We'll double check value guides- I think they were checked for wear, but will make sure
1068- Yes, I was, thank you. I ordered a new set of pushrods "59 only" from Kettering.
Duncan, we will double check end float as well.
Thanks all!
In answer to the posts..
Malc, its a single click coming from the cam end, as it goes over the lobe, inlet cam only, but on both lobes. There is no noise from the exhaust cams.
Knut- cam followers were replaced less than 1000 miles ago, and were not showing any signs of wear. We'll double check value guides- I think they were checked for wear, but will make sure
1068- Yes, I was, thank you. I ordered a new set of pushrods "59 only" from Kettering.
Duncan, we will double check end float as well.
Thanks all!
TTFN
Jon.
Jon.
- Expat
- Member
- Posts: 1033
- Joined: Thu Nov 12, 2015 2:22 pm
- Location: Tennessee, USA
Re: Engine re-build... strange noises!
Different animal admittedly but it was excessive cam end float causing the ‘clack' on my G3. The lobe contacts the tappet off center, turning it slightly to even out wear, thus pushing the camshaft axially sideways.
Apologies if I'm preaching to the converted.
Steve
Apologies if I'm preaching to the converted.
Steve
Keep shiny side up.
These are my principles, if you don’t like them, I have others. (Groucho Marx)
These are my principles, if you don’t like them, I have others. (Groucho Marx)
-
- Posts: 50
- Joined: Mon Apr 16, 2012 3:55 pm
- Location: KENT UK
Re: Engine re-build... strange noises!
That fine Steve, thank you. Its been suggested cam end float could be the issue, which we are going to check.
TTFN
Jon.
Jon.
-
- Member
- Posts: 373
- Joined: Wed Feb 01, 2012 1:22 pm
- Location: Vestland NORWAY
Re: Engine re-build... strange noises!
Hi. I'd be interested to learn [*]what your findings were.
-Knut
-Knut