Ruston PT noise?

Today was a day that I didn't know where to start so I quickly had a look at my PT. When I bought it the owner said it had a rattle from the top end of the engine. So when I got it home I tried it but couldn't get it to run very well, and yes a loud rattle from the top of the engine, well asking about a friend said his PT was the same. So today I quickly pulled the head off and had a look to see if anything stupid had happend like something drop into the bore. Nothing looks wrong but there is a very loud crack coming from the mag (wico) when turning the engine over, is this normal? should I be worried about it or is there a fault with the mag, or am I missing something wrong in the engine. The tappets are very wide so I'm going to de-coke them and re-set before putting the head back on. Can anyone tell me the valve clearances please.

Any information greatly received,

Stu.

Have you checked the small end? is it a flywheel magneto, shouldnt get any noise from them.

Cheers steve

No it's a normal impulse mag, it's just a very LOUD click. Not got anything else stripped like I say it's a strange (light) rattle as if there was something is loose. I might just leave it for now then rebuild it and try and get the noise on video if I don't get any other views to what it might be.

Thanks Stu.

Impulse on a pb? I thought they were fitted with Lucas mags.

Cheers Steve

sounds like you have a impulse mag on there same as the WD's have ...

Stu have a look at the rubber cupling that fits on the end of the impulse bit of the mag, these split sometimes or could just be worn out.
Set the tappets to 16 tho that will keep it nice and sweet.
Make sure the governer springs are ok if they are worn the govners clang on the side of the engine
Jonesey

HI STU......
your not having a lot of luck,it sounds to me as its an impulse problem.....
does it get louder the faster you turn it????
i have some wico mags here,so if you need anything contact me and we can sort it out....
you pay postage,and the mags yours as i owe a favor mate...
mike...

Sorry guys messed up again it's a PT, my head up my ass again.

Sorry Stu.

stationary stu wrote:Sorry guys messed up again it's a PT, my head up my ass again.

Sorry Stu.

Easy to do as both engines are very very very very very






DIFFERENT!!!!!!

better keep an eye on him after all hes getting old now.....
and like its been said the engines are very very different..
mike...

Only one letter difference put a B instead of a T. Oh well
Think I'm trying to do to much at once and my minds not with it.

Stu.

stationary stu wrote:Only one letter difference put a B instead of a T. Oh well
Think I'm trying to do to much at once and my minds not with it.

Stu.

That's the trouble, the B and T are soooooo close on the keyboard!

stationary stu wrote:Only one letter difference put a B instead of a T. Oh well
Think I'm trying to do to much at once and my minds not with it.

Stu.

from what Ive heard you've been like it for ages mate...
don't worry be happy...
mike...

Should have gone to specsavers!

Well if its a PT then there will be a click while turning over.

Cheers Steve