TDC HIY 10 hp
#1
Last summer I bought a 1947 HIY 10 hp. It runs quite well, but after a couple of miles the engine misfires, and it is getting worse after say 10-15 miles. I have noticed an excessive end play in the distributor axle, and some axial play, so I intend to remove the distributor. The Shop Manual says that first I should turn the engine “until the steel ball embedded in the flywheel is seen to be opposite to the pointer …etc.”  But as far as I can see there is no steel ball on the flywheel. Or a hole where the steel ball should have been “embedded”. Or a line indicating TDC.
 
Before removing the distributor I,d like to know: What is the initial (or basic?) ignition setting? How about 4º before TDC? Or 8º before?
Reply
Thanks given by:
#2
"The initial ignition sets" is the ball …


May be …. someone change cylinder order (turn cylinder one in cylinder four).


Take spark plugs out and with help turn engine a half …

This happen in my HIY …
and yes it has the ball and is red painted
Reply
Thanks given by:
#3
Set you TDC for number one manually regardless of distributor position.
Piston at top after exhaust valve closes on number one.
You should see where the ball location or the hole if it's missing.
Check position of rotor, you may be 180 deg. out as Bugas03 says in previous reply.

Steel ball indicates 2 deg. BTDC.
At idle (approx. 400 RPM) this ball should be static at the pointer using a strobe - If you can get it to a lower RPM all the better.
Advance is taken over by vacuum (can start at around 400RPM)  and mechanical means within distributor.
Your distributor should be a DKZ4A-P27 @ 18 deg. crank advance.
Make sure someone has not fitted a DKZ4A-P31 which has 27 deg. crank advance (as in the 12hp)
Regards.
Chas.

A pessimist sees difficulty in every opportunity. A optimist sees opportunity in every difficulty.
Reply
Thanks given by:
#4
(17/06/2018, 09:17 PM)swedevaux Wrote: Last summer I bought a 1947 HIY 10 hp. It runs quite well, but after a couple of miles the engine misfires, and it is getting worse after say 10-15 miles. I have noticed an excessive end play in the distributor axle, and some axial play, so I intend to remove the distributor. The Shop Manual says that first I should turn the engine “until the steel ball embedded in the flywheel is seen to be opposite to the pointer …etc.”  But as far as I can see there is no steel ball on the flywheel. Or a hole where the steel ball should have been “embedded”. Or a line indicating TDC.
 
Before removing the distributor I,d like to know: What is the initial (or basic?) ignition setting? How about 4º before TDC? Or 8º before?



HI

Here, my ball photo (cleaned) …… Smile Smile


Attached Files Thumbnail(s)
   
Reply
Thanks given by:
#5
HI

Very difficult to find the ball ….

https://www.youtube.com/watch?v=mynRZR6I_oA
Reply
Thanks given by:
#6
(20/06/2018, 11:48 PM)BUGAS03 Wrote: HI

Very difficult to find the ball ….

https://www.youtube.com/watch?v=mynRZR6I_oA

Trouble with hammering a flywheel bolt is that you can damage the thrust area of the main bearing, and crank flange for flywheel.
Regards.
Chas.

A pessimist sees difficulty in every opportunity. A optimist sees opportunity in every difficulty.
Reply
Thanks given by:
#7
(22/06/2018, 05:20 AM)Chas Wrote:
(20/06/2018, 11:48 PM)BUGAS03 Wrote: HI

Very difficult to find the ball ….

https://www.youtube.com/watch?v=mynRZR6I_oA

Trouble with hammering a flywheel bolt is that you can damage the thrust area of the main bearing, and crank flange for flywheel.



Yes … correct.   
This is "brut force"  … :Smile     and last option … and engine is to rebuild
Reply
Thanks given by:
#8
Hi Bugaso3,
If and when you replace your distributor maybe this link may help you locate a replacement http://www.distributordoctor.com/
By the way I enjoyed your videos

Les
Reply
Thanks given by:
#9
(22/06/2018, 08:58 PM)Bish Wrote: Hi Bugaso3,
If and when you replace your distributor maybe this link may help you locate a replacement  http://www.distributordoctor.com/
By the way I enjoyed your videos

Les

HI Thanks …

But … replace ???!!!!    why ??!!!!

It was not expected or estimated 


There are a new vídeo  … Smile
Reply
Thanks given by:
#10
(22/06/2018, 09:50 PM)BUGAS03 Wrote:
(22/06/2018, 08:58 PM)Bish Wrote: Hi Bugaso3,
If and when you replace your distributor maybe this link may help you locate a replacement  http://www.distributordoctor.com/
By the way I enjoyed your videos

Les

HI Thanks …

But … replace ???!!!!    why ??!!!!

It was not expected or estimated 

Sorry Bugaso3 my post was meant for Swedevaux  and composed in a hurry.
Apologies Les
 

There are a new vídeo  … Smile
Reply
Thanks given by:


Forum Jump:


Users browsing this thread: 1 Guest(s)