Which Dissy do I need?
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Which Dissy do I need?
Hi all, Some of you will know by now from my previous questions that I've just fitted a latter type DG 1,9 into my tin top.
Not without a few problems along the way!
Anyway today we finally got it started vut not before several and one rather loud misfires.
Found that the leads were all in the correct positions but the Dissy was 180 out Took out the dissy and turned it round and it started!!! But Mechanic friend said you shouldn't be able to put it in the wrong way round as it's supposed to be offset?
But you most definitely can OR is it the wrong one as it's the one from my earlier engine??????
Head scratching going on here
Will it run well with an older dissy or do I need one to match the engine?
Not without a few problems along the way!
Anyway today we finally got it started vut not before several and one rather loud misfires.
Found that the leads were all in the correct positions but the Dissy was 180 out Took out the dissy and turned it round and it started!!! But Mechanic friend said you shouldn't be able to put it in the wrong way round as it's supposed to be offset?
But you most definitely can OR is it the wrong one as it's the one from my earlier engine??????
Head scratching going on here
Will it run well with an older dissy or do I need one to match the engine?
- Mocki
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Re: Which Dissy do I need?
It’s quite common for rebuilt engines to have the drive for the dissy 180º out , you can simply rotate the leads 180º and time it accordingly .
A different dissy will not solve your issue, i suspect you haven’t seated the dissy fully , as your mate is correct , the drive is offset .
A different dissy will not solve your issue, i suspect you haven’t seated the dissy fully , as your mate is correct , the drive is offset .
Steve
tel / txt O7947-137911
________________
1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper
tel / txt O7947-137911
________________
1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper
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Re: Which Dissy do I need?
Ah so it really will only fit one way round ok.
Are there different ones and if so would it make any difference to the running of the engine?
Are there different ones and if so would it make any difference to the running of the engine?
Re: Which Dissy do I need?
I have a later one from a dg engine .
1992 red lle 2.2 subaru 1990 rhd caravelle 2.2 subaru 1986 california import vanagon
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Re: Which Dissy do I need?
Would using your later one improve the running of it do you think?
- Mocki
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Re: Which Dissy do I need?
Shouldn’t be any different as far as i know
The difference is between DF, DG , DH and DJ, SS, MV engines not age related , although happy to be corrected
The difference is between DF, DG , DH and DJ, SS, MV engines not age related , although happy to be corrected
Steve
tel / txt O7947-137911
________________
1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper
tel / txt O7947-137911
________________
1989 2.1LpgWBX HiTop Leisuredrive Camper
1988 2.1 Caravelle TS TinTop Camper
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Re: Which Dissy do I need?
So if the difference is between the different engines ie: DG or DF say how do you tell which one you have?
Re: Which Dissy do I need?
I think for a DG the code should be 025 905 205 Q or C suffix. ( from another thread. )
Those should have a single port vac unit on them.
I think the confusion here is mentioning 'age' but really I think you are asking if you have the right dizzy for a DG, irrespective of age.
( Feel free to correct me if I am wrong. )
Those should have a single port vac unit on them.
I think the confusion here is mentioning 'age' but really I think you are asking if you have the right dizzy for a DG, irrespective of age.
( Feel free to correct me if I am wrong. )
'89 1.9 DG
“It's Easier to Fool People Than It Is to Convince Them That They Have Been Fooled.” ~ Mark Twain.
“It's Easier to Fool People Than It Is to Convince Them That They Have Been Fooled.” ~ Mark Twain.
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Re: Which Dissy do I need?
No, you're not wrong on that point but no one has actually answered the question regarding the difference having the wrong one would actually make?Smiffo wrote: ↑17 May 2023, 20:06 I think for a DG the code should be 025 905 205 Q or C suffix. ( from another thread. )
Those should have a single port vac unit on them.
I think the confusion here is mentioning 'age' but really I think you are asking if you have the right dizzy for a DG, irrespective of age.
( Feel free to correct me if I am wrong. )
Re: Which Dissy do I need?
The advance / retard curve would be wrong in respect to timing at different points of the rev range?sump wrote:No, you're not wrong on that point but no one has actually answered the question regarding the difference having the wrong one would actually make?Smiffo wrote: ↑17 May 2023, 20:06 I think for a DG the code should be 025 905 205 Q or C suffix. ( from another thread. )
Those should have a single port vac unit on them.
I think the confusion here is mentioning 'age' but really I think you are asking if you have the right dizzy for a DG, irrespective of age.
( Feel free to correct me if I am wrong. )
I’ve never tried it, but imagine that looks like flat spots and reduced power.
Sent from my iPhone using Tapatalk
'89 1.9 DG
“It's Easier to Fool People Than It Is to Convince Them That They Have Been Fooled.” ~ Mark Twain.
“It's Easier to Fool People Than It Is to Convince Them That They Have Been Fooled.” ~ Mark Twain.
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- Registered user
- Posts: 148
- Joined: 16 May 2018, 08:12
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Re: Which Dissy do I need?
The last thing I want is reduced power
Should be OK as have the Powerspark electronic kit with Viper coil and vacuum advance anti pulse valve on it's way
Should be OK as have the Powerspark electronic kit with Viper coil and vacuum advance anti pulse valve on it's way
Re: Which Dissy do I need?
I have a 1.9dg engine with a weber 34dat carb.
Its running ok atm. But i started to think about what i would do if the dizzy gives up. I carry other spares but i dont know enough about this bit.. though i have set the timing myself bit it was a while ago now, and was parrot fashion without true understanding of the full mechanical science.
Anyway.
ive identified my current dizzy as a Bosch 414, 0237023007.... with vac advance.
Which i believe is normally found on a 2.0 Aircooled. Mine is obvs a watercooled 1983 1.9 dg.
So,
Does this matter ?
Would it run better with something else.?
Is it only the vac advance that would be different?
Note ,
If i recall..
When setting the timing, i took the revs up beyond the vac effect to set it. But i dont know at what revs that was.
Any advice welcome.
Its running ok atm. But i started to think about what i would do if the dizzy gives up. I carry other spares but i dont know enough about this bit.. though i have set the timing myself bit it was a while ago now, and was parrot fashion without true understanding of the full mechanical science.
Anyway.
ive identified my current dizzy as a Bosch 414, 0237023007.... with vac advance.
Which i believe is normally found on a 2.0 Aircooled. Mine is obvs a watercooled 1983 1.9 dg.
So,
Does this matter ?
Would it run better with something else.?
Is it only the vac advance that would be different?
Note ,
If i recall..
When setting the timing, i took the revs up beyond the vac effect to set it. But i dont know at what revs that was.
Any advice welcome.