[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]

Fw: [T3] Forging ahead with short block

<x-charset iso-8859-1>>That said, here's the down side: You made a big mistake. There was no
>reason to bore THIS case. One of the reasons I wrote up the engine rebuild
>instructions that I did and passed around last week was so that people
>wouldn't be tempted to take their cases to random machine shops to have
>them align bored. Once you did that, you no longer know the precision of
>bore. Random shops will do a random job. The reason I recommend RIMCO
>is that I know that they have the experience AND the better grade of
>equipment that will enable them to do this job right. Perhaps your shop did
>right; you and I don't know, but we do know that they took the thrust out
>full .040" so that next time this case is JUNK.

The guy putting together the motor has been using this machine shop to align
bore VW cases for 20 years and has had good experience with the quality and
precision.  The case was supposedly uncut, so I don't know why so much was
taken off.  Perhaps the case had been cut before?  I'm not really interested
in rebuilding this motor several times... I want to put it together right
and run it for 150,000 or more miles with only maintenance.  That's why I am
going with full flow oiling, counterweighted crank, etc.  Perhaps my
expectations are unrealistic.  But it does make sense logically to me, that
if the machine work was done correctly, there is no reason this case can't
still be the base of a quality motor.

>So you have taken a perfect case and removed most of its value. I think
>was an expensive lesson.

The case was approx. $100.  Considering the case GEX used on my existing
motor should probably never have been rebuilt, and I had to have a case
anyway, I think this was a decent price for a dual relief universal case.

>It is common to think that more will be better, but this is just another
>where this is wrong. The VW OE 26mm pump that fits the dished cam is
>plenty big and will also fit in front of the rear mount crossbar. More oil
>wastes horsepower; the extra oil will be dumped by the pressure relief
>So in the end, all you are doing is burning extra gasoline to produce extra
>horsepower which you can use to pressurize more oil which will just get
>dumped by the pressure relief valves putting turning the energy into heat
>heating the oil.

Is a 26mm pump sufficient for full flow oiling on a stock motor?  The answer
seems to be yes?

As stated in a previous message, I already own the first book (and have for
the 3 years I've owned this Squareback) and the second book is in the mail
to me per your recommendation.

Volkswagen Official Service Manual
Type 3 Fastback and Squareback 1968-1973
published by Robert Bentley, Cambridge, Mass, 1974
ISBN 0-8376-0057-X / LPV 997 383 / VSQU
(excellent book, complete and well written)

How to Hotrod Volkswagen Engines
by Bill Fisher
published by H. P. Books, Tucson, AZ, 1970
ISBN 0-912656-03-4
(excellent book, well written and researched)

Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]