In reply to johnnydog - yes my engine is post ME50,000 so is 10 degrees BTDC
By the way - did you have any luck with the 2000TC instrument panel wood?
cheers
Chris
OOY22L
Timing engine.
Re: Timing engine.
Yes Chris.....I posted a response today on whichever topic it was on, and sent you a PM as well - basically saying I had found a nice piece if you were still interested!
Register Member no. 1596
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
Re: Timing engine.
Chris,
Do you have details of the correct distributor that should be fitted to your car, along with the correct vacuum advance unit?
If not, I will have the relevant numbers (not part numbers) so that you can check against yours, to elimate them or otherwise!
Do you have details of the correct distributor that should be fitted to your car, along with the correct vacuum advance unit?
If not, I will have the relevant numbers (not part numbers) so that you can check against yours, to elimate them or otherwise!
Register Member no. 1596
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
Re: Timing engine.
Hi John,
I am at work so can't quote the numbers but the dizzy has the correct Lucas part number for the post ME50,000 engine and is alomost certainly the original one for the and is in good nick (no play etc) and (although I haven't fitted it) I bought another one from Chris Witor with same Lucas number and I am pretty certain that the diaphrams were the same on both but i will check tonight and let you know tomorrow.
Cheers
Chris
ps responded to your pm
I am at work so can't quote the numbers but the dizzy has the correct Lucas part number for the post ME50,000 engine and is alomost certainly the original one for the and is in good nick (no play etc) and (although I haven't fitted it) I bought another one from Chris Witor with same Lucas number and I am pretty certain that the diaphrams were the same on both but i will check tonight and let you know tomorrow.
Cheers
Chris
ps responded to your pm
-
pete lewis
- Groupie
- Posts: 84
- Joined: Fri Aug 01, 2014 2:50 pm
- Location: Luton
Re: Timing engine.
There should be little difference between static and strobe at slow idle less than 600rpm
And whilst the vac capsule should not be doing anything its best disconnected.
wild diferences are really showing the centrifugal is actually advancing perhaps too early
amd needs new springs fitting
if you read the dizzy test data advance curves are mapped decelerating not accelerating
pete
And whilst the vac capsule should not be doing anything its best disconnected.
wild diferences are really showing the centrifugal is actually advancing perhaps too early
amd needs new springs fitting
if you read the dizzy test data advance curves are mapped decelerating not accelerating
pete
Pete Lewis
Luton
also area organiser for herts and beds tssc.
Luton
also area organiser for herts and beds tssc.
Re: Timing engine.
Hi Pete,
The cars fitted with Stromberg CDSE emission control carbs like mine have a specified idle speed of 850rpm (unlike earlier cars) and it is hard to get a regular reliable idle of much below that on my car so the mechanical advance may well be just kicking in. I have three of the correct number distributor (see below) one of which had obviously weak springs but the other two do feel pretty good (I know that doesn't mean much!) and I swapped the set from the Chris Witor dizzy onto the dizzy in the car but it made no difference so either the springs are ok or both sets were equally worn!
John - I have three dizzys - the original on the car, a good used one bought from Chris Witor and a pretty tired one bought from ebay because it was cheap and all have the Lucas part number 41378B (equates to Stanpart 218112) which is the correct one according to the workshop manual and all have date codes from 1972 or 73 which again is correct. Vacuum units are all 5 10 6 Lucas part number 54418481 as far as I can tell!
cheers
Chris
OOY22L
The cars fitted with Stromberg CDSE emission control carbs like mine have a specified idle speed of 850rpm (unlike earlier cars) and it is hard to get a regular reliable idle of much below that on my car so the mechanical advance may well be just kicking in. I have three of the correct number distributor (see below) one of which had obviously weak springs but the other two do feel pretty good (I know that doesn't mean much!) and I swapped the set from the Chris Witor dizzy onto the dizzy in the car but it made no difference so either the springs are ok or both sets were equally worn!
John - I have three dizzys - the original on the car, a good used one bought from Chris Witor and a pretty tired one bought from ebay because it was cheap and all have the Lucas part number 41378B (equates to Stanpart 218112) which is the correct one according to the workshop manual and all have date codes from 1972 or 73 which again is correct. Vacuum units are all 5 10 6 Lucas part number 54418481 as far as I can tell!
cheers
Chris
OOY22L
-
pete lewis
- Groupie
- Posts: 84
- Joined: Fri Aug 01, 2014 2:50 pm
- Location: Luton
Re: Timing engine.
if you cant reduce the idle on CDSE or their variants then i suspect the temperature compensators are open when shuld be closed
the 0 rings that seal them to the main body disintegrate the small plunger should be closed at normal temperatures
the plunger is a simple job and must be pressured on its seating by adjusting the small nut on the bi metal spring
svrew it to close it down. these by pass the throttle plate so its more important they are closed to set the idle speed screws and any mixture which is impossible if the things are open when they should be closed
as a more dramatic cure cork the holes up and delete them
they are in the frame of things there to increase idle and weaken mixture when in very hot under bonnet situations
but normal running.....get them closed
most dizzy advance starts at 600 so any more will begin advance . there is pages of dizzy test data in the WSM
most carbs engines would max at 29/31deg at 3000 rpm again the dizzy data says decelerating ,not building
Pete
the 0 rings that seal them to the main body disintegrate the small plunger should be closed at normal temperatures
the plunger is a simple job and must be pressured on its seating by adjusting the small nut on the bi metal spring
svrew it to close it down. these by pass the throttle plate so its more important they are closed to set the idle speed screws and any mixture which is impossible if the things are open when they should be closed
as a more dramatic cure cork the holes up and delete them
they are in the frame of things there to increase idle and weaken mixture when in very hot under bonnet situations
but normal running.....get them closed
most dizzy advance starts at 600 so any more will begin advance . there is pages of dizzy test data in the WSM
most carbs engines would max at 29/31deg at 3000 rpm again the dizzy data says decelerating ,not building
Pete
Pete Lewis
Luton
also area organiser for herts and beds tssc.
Luton
also area organiser for herts and beds tssc.
Re: Timing engine.
Chris,Vox wrote:
John - I have three dizzys - the original on the car, a good used one bought from Chris Witor and a pretty tired one bought from ebay because it was cheap and all have the Lucas part number 41378B (equates to Stanpart 218112) which is the correct one according to the workshop manual and all have date codes from 1972 or 73 which again is correct. Vacuum units are all 5 10 6 Lucas part number 54418481 as far as I can tell!
cheers
Chris
OOY22L
The details you have given 41378 with the vacuum advance degrees of 5 10 6 at the specific rev ranges are right for your car as you say, although my list states 41378A not 41378B - I don't know what the difference is (if any) between the two.
P.S. Your wood dash is ready to go!
Register Member no. 1596
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red
Re: Timing engine.
Hi all,
I was told by an ex Lucas guy that the letter at the end of the part number was a revision number to indicate later (and possibly modified) production so a B is later production than an A etc but the spec remained the same and as long as the part number was correct they would all be interchangeable as a unit.
cheers
Chris
OOY22L
I was told by an ex Lucas guy that the letter at the end of the part number was a revision number to indicate later (and possibly modified) production so a B is later production than an A etc but the spec remained the same and as long as the part number was correct they would all be interchangeable as a unit.
cheers
Chris
OOY22L