I have recently acquired a 1972 Giulia Super 1300 with Dellorto DHLA 40 carbs that originally came from Catania, Sicily. I live and drive 95% of the time at 7000 ft (2133 meters) elevation with occasional runs up to 10,000 ft., and down to 5500 ft.
The 1300 motor is completely stock AFAIK in terms of cams, compression, etc.
The current jetting I have identified is as follows:
Main jet- #110
Emulsion tube- #7772.5
Idle jet holder (?)- #7850.1
Idle jet- #48
Pump jet holder (?)- #7482.1
Pump jet- #70
other jet- #33
Not sure of the correct terms for these parts, so hope this is enough for anyone to make an informed suggestion of what and how much to change.
Car cranks and runs...OK, but surges at steady state cruise, and is hard to set idle speed to a repeatable level- seems to vary considerably with engine temp from cold to fully warmed up. Some of this could be due to my not having access to a manometer, but I think it's pretty close.
Suggestions welcome as well as helpful links, websites, etc. TIA.
The 1300 motor is completely stock AFAIK in terms of cams, compression, etc.
The current jetting I have identified is as follows:
Main jet- #110
Emulsion tube- #7772.5
Idle jet holder (?)- #7850.1
Idle jet- #48
Pump jet holder (?)- #7482.1
Pump jet- #70
other jet- #33
Not sure of the correct terms for these parts, so hope this is enough for anyone to make an informed suggestion of what and how much to change.
Car cranks and runs...OK, but surges at steady state cruise, and is hard to set idle speed to a repeatable level- seems to vary considerably with engine temp from cold to fully warmed up. Some of this could be due to my not having access to a manometer, but I think it's pretty close.
Suggestions welcome as well as helpful links, websites, etc. TIA.