Running MT90 in my TR3 trans, no leaking issues.
Bill B
TS30800L
Sent from my Handspring Treo
On Sep 18, 2018, at 2:50 PM, Rochlin Robert <rrochlin@comcast.net> wrote:
This spring I posted a question as to what may be causing my engine to idle
erratically. I explored all the suggestions made which were very helpful. In
the end it seems that the erratic idle was caused by a combination of the non
stock cam and too low an initial idle. When I rebuilt my engine I put in a
Goodparts street performance cam, the cam that is bit more aggressive than the
stock cam I removed. In addition I installed .020 oversized pistons and
increased the compression to about 9:1. I set the idle and ignition as it had
been when the engine was stock. The issue seems to have been that I was
running the idle too low. The car ran fine when it was started cold until the
engine got to operating temperature and then the idle would drop to the point
that the car would run poorly at idle and would close to stall when idling
after an extended high speed run. With some experimentation I found that an
idle of about 1000 would keep the engine happy when idling hot. One thing that
did throw me was that the carbs run rich at idle judging by smell and lean out
at higher speed judging by the color of the plugs. I confirmed this with
Color-tune. With that problem solved, car has been a pleasure to drive this
summer.
One note- I replaced the 30 wt. non detergent oil Iâ??ve run in the
transmission for years with Redline MT 90. The car does shift a little better,
but the transmission seems to be leaking markedly more that on the 30 wt.
although, the leak looks worse that it is, only a couple of ounces over the
last 4 months. A few years back John Esposito made a similar conclusion on his
Quantum Mechanics Transmissions web site. Iâ??m wondering if anyone else has
had a similar issue when changing over to MT 90.
Best,
Bob
â??72 TR6
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