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On 2 Jul 2001, at 8:58, Scott Taylor wrote: > Jim wrote: > >>Huh? I don't see ANY "R" engine prefix listed in my microfilm, BUT > now that I look at my "Without Guesswork" I see that it IS in there. > I don't recall anyone mentioning this before, and it looks like it > would be a major omission. Can anyone else verify this? > At any rate, it looks like VW didn't start any of the other letter > engine prefixes until MY '66, so this 65 probably doesn't have it. > Who can tell us more about the R prefix?<< > > There is a note about this in the parts list I have in the engine > production survey section. For engine numbers 225340 through 1100000 > (8/63 - 7/65) there is this note next to the engine numbers: > > for 1.5 liter/54 b.h.p. up to July 1965 > also with identification letter "R" > for 1.5 liter/54b.h.p. - > M 249 up to July 1965 > also with identification letter "N" > > I've always been a little confused about what this means. My guess has > been that the letter codes identify the detuned 1500S engines that were > meant to allow use of lower octane fuel. My 65 has an N series engine > and has a tag attached to the case that reads "M-249 90 OKTAN". So your 65 engine has a serial # with an N prefix that is in the 65 range? Strange that the microfilm would leave that off. I'll have to check my earlier parts book. > Yes, I know that M249 is the automatic transmission option beginning in > 1968. No, my 65 isn't an automatic. The M-code listing from the microfilm lists M240 as the low compression modification. VW was known to have recycled M- codes in later years, so it is possible that M240 was a typo and should have been M249 in the early years. - Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe