Quote:
Originally Posted by bondvagabond
All that black smoke is unburned fuel from not enough air for complete combustion. The alternative would be to turn your fuel screw way down till the smoke is reasonable, diesels don't have the same lean=overheat issues that gas engines have. The 1.6 does not have much power to spare and will get even more gutless with a turned down fuel screw.
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That's what I did! With the screw turned back there's no more (or very little) smoke. But I have to keep it floored to maintain 70mph on a straight flat highway.
Quote:
Originally Posted by bondvagabond
I have heard it is not advised to ad a turbo to an na 1.6 vw, even though they have same compression, there are some internal differences, forged pistons maybe? I can't remember.
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The differences that I know of are: 1 the injection pump has a diaphragm that allows more injection only when the manifold has boost pressure, 2 the pistons are different, forged I do believe, and I think have more compression rings, 3 the turbo diesels have oil sprayers under the pistons and, 4 they also have an oil cooler that the N/A diesels don't have.
So would a turbo or a supercharger give better fuel mileage? I don't mind it being gutless without one though. What about making it a miller cycle?