38 DEGAS idle speed

[MarkRHayes]

72 gt with 2.2 liter engine with 38 degas. what rpms should the idle be set at? also what do different jets do for you? bigger jets let in more fuel?

[RallyBob]

Originally Posted by MarkRHayes 72 gt with 2.2 liter engine with 38 degas. what rpms should the idle be set at? also what do different jets do for you? bigger jets let in more fuel?

The carb won't affect what the idle speed should be. Does it have a stock camshaft? That is more pertinent info. Otherwise, if it's a stock cam then the stock idle is fine. IIRC it's about 650-750 rpm or thereabouts.

What distributor do you have? An older 1.9 distributor has too agressive a timing curve to be used with a newer 2.2 engine (which had a computer controlled distributor originally).

Jets do exactly as you say, they allow you to tune you air/fuel ratio to the proper percentage. Too much is just as bad as too little!

HTH,
Bob

[tekenaar]

Originally Posted by MarkRHayes 72 gt with 2.2 liter engine with 38 degas. what rpms should the idle be set at? also what do different jets do for you? bigger jets let in more fuel?

Wow, learn something every day . . . good ol' Edgar, I knew he painted and sculpted during the Impressionist period, just didn't realize he "sculpted" carbs too! . . .

[baz]

yep otto he did

you can see the girl on the right is having her carb tuned by the girl behind with a screw driver in her hand


from carb position i think back fires and emission problems

[MarkRHayes]

thanks for the info. i have a standard camshaft. my distributor is electronic now.