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Old 05-31-2005   #2
BKs50trimGST
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Join Date: Apr 2005
Location: minnetonka
Posts: 246
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Re: This is what my rebuilt 6-bolt consists of

this is a conversation beween rick shindley and cummins off of yahoogroups.com since i suck at typing here is exactly what happened to my freaking car! Sorry if this post is really long - BTW - cummins bad mouthed Shindley about tuning - just a warning for you.

Mr. Cummings:

I tuned Brian's car and that act alone did not destroy his motor. His
car has a 5-knob SAFC, EGT and an annoying a/f meter. It's very easy
to tune a car with those items, and I did. It took just ten minutes.

I have street tuned cars for years and have had no trouble doing so.
It's more difficult to do than tuning on a dyno, but I don't have a
dyno and I am willing to take the time. I am pretty good at it,
actually. It's not that difficult if you know what you are doing. I
understand that many do not know or trust themselves to do it and
that's fine. I do know what I am doing so it's not a problem for me.
For you to assume otherwise is an affront to me.

Brian initially towed his car to me with a used (E-bay) 50-trim
partially installed. It required the addition of the oil return tube,
that was it, that and the installation of a Quaiffe.

The E-bay 50-trim turbo he mounted on the engine was no good. It
dumped oil into the exhaust and intake immediately upon startup. The
turbo was junk. Brian then bought a new 50-trim and had it
drop-shipped to me for installation. I then took the car out and
tuned it up on the street. Like I said, that took about 10 minutes.

All the time I was tuning the car there was some oil smoke coming from
the exhaust. I attributed that to the former turbo dumping oil into
the intake and/or exhaust for the few minutes it ran on the car. I
figured the smoke would stop soon enough. I didn't drive the car long
enough to see that happen, however.

Brian picked up the car and off he went. I had managed to put maybe
ten miles on it before he took it. I live in Big Lake and he managed
to get into two Honda races with his new turbo and Quaiffe on his way
back to Minnetonka. After those races he called me and said he saw
smoke coming from the exhaust. I said it was probably the left over
oil from the bad 50-trim. It seemed the correct analysis since the
turbo was new.

The next day he was driving the car when the engine seized! The car
was towed to me for inspection and I found the #3 rod bearing spun.

I built up a nice 1G engine with a 2G oil pump (so no need for
DSMLink) for it and have it running now. The new 50-trim is on it and
there is much smoke coming from the exhaust!!! I drove the car to get
some gas and the smoke only got worse. After just five miles round
trip to the gas station I found the new 50-trim to be dumping oil into
the intake! What's more, the turbo now has more shaft play, including
in and out (not good), and the compressor wheel is hitting the turbo
housing and making fine aluminum particles to mix with the oil it
spits into the intake! This from a new turbo with just 80 miles on it!

FYI: the turbo oil feed line is new from RRE and intended for the
purpose. The oil supply is from the 2G oil filter housing (where the
stock turbo is fed from). The oil return tube is comprised of an
aftermarket flange and brass 30 degree elbow directly at the bottom of
the turbo, then a 3/4" hose from there to the oil pan, where the hose
connects to what's left of the stock oil return tube. There is no
restriction nor is the oil supply from an unfiltered source. In short,
the turbo failed and I do not know why. It is unusual for a new turbo
to dump oil like this one does, but I have seen it just once before in
the last number of years I have been working on DSMs. I know it can
happen but it just is rare. Still, that's what we have here; a new
turbo that dumps oil into the intake for burning!

I do not know the history of the old motor before it arrived. It ran
strong and made no rod knocking sounds when I drove it for those ten
minutes to tune it. EGTs were cool; nowhere near 1450 at WOT. (I
tuned it that way (conservatively) so the young man wouldn't melt his
motor!) Boost was limited to 17 psi, my favorite number. The only
thing I noted was some oil smoke, like I said, and I attributed that
to the E-bay 50-trim.

So, if after this review of that car's recent history you can still
attribute the rod bearing failure to my tuning the old SAFC on the
street then I would like to meet with you for a "private
consultation." You apparently have a great deal to offer on the
subject of tuning DSMs that you have, until now, kept hidden.

And I hear you can also explain how a sheep's bladder can be used to
predict earthquakes! You truly have an amazing intellect!

Rick
(Dynoless in Big Lake)
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