Quote:
Originally Posted by Ryland
So it looks like the the engine is from 1990-'95 indirect injection, with that fuel is not injected directly in to the combustion chamber, thus it looks kind of like this:
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Hi,
Terminology - TDI in VW speak is Turbo Direct Injection. There is also an SDI engine which has no turbo or intercooler - think Suction Direct Injection...
Photos would help. For background VW has made quite a few Diesel engines from the 1.6 IDI non-turbo in the Golf 1, a 1.6 Turbo IDI non-intercooled GTD model (Mk2 Golf) and then onto the 1.9 IDI turbo and non-turbo models. If it has a self-made intercooler then it could be any engine I suppose, even a self-made turbo conversion of the Mk 1 ? I think Rob's Polo has the 1.9 IDI NA (Naturally Aspirated) unit.
A 1.6 Turbo (75hp) is listed as a possible engine in the T3 Caravelle which I think is the same as the GTD engine - in which case the unit is from the 1980s.
There is little difference in FE between the engines but performance has improved a lot - you can now get a 170hp TDI with the same FE as the original 1.6 Golf 1 but obviously better go.
Another clue may be to find the injection pump which will probably be a rotary type. The make may indicate how suitable the engine is for BioDiesel use although if it is an earlier unit then it is more likely to be usable on chip fat than otherwise without any mods.
The second fuel pump mentioned has me intrigued as there should just be a single one that injects into the cylinders.
BTW the noisiness of a old-school Diesel is the pump and not the diesel fuel exploding or anything like that - it is one of the reasons a modern common-rail high pressure diesel is so much quieter - no rotary pump.
Good luck though, seems an interesting project.