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Re: Top 10 list - TR6 tuning

To: Jeff Nathanson <jeffn@msystech.com>
Subject: Re: Top 10 list - TR6 tuning
From: Monica <monica@snovalley.com>
Date: Sun, 13 Apr 1997 18:21:31 -0700
Cc: triumphs@Autox.Team.Net
References: <199704140010.UAA24915@mail3.voicenet.com>
Add, check the thrust washers!

-jimb
http://www.snovalley.com/~monica/jbtr6.html

Jeff Nathanson wrote:
> 
>         I thought that a collaborated list, which enumerates
> reasons that would contribute to a poorly running TR6 (or other
> Triumphs), would be benefical to most of us. Here' mine. It contains
> some rather obvious entries. I'm assuming we can all learn from other's
> mistakes. Please add your experience or correct my errors (my experience
>  is only 1 year's worth)
> 
>         10. Brakes locked?
>                 Jack up car and ensure that all wheels rotate freely
>         9. Both carbs functional
>                 Lift air valve at idle - motor should either die or
>                 increase RPM's. Adjust floats if no change.
>         8. Both carbs synchronized
>                 Ensure that linkage between carbs are tight so that
>                 both throttle plates rotate when accelerator is
>                 depressed
>         7. Spark plugs
>                 Make sure all plugs fire. Take one plug out at a time.
>                 Inspect against a chart like in the Haynes manual for
>                 obvious problems. With plug out and grounded, turn
>                 engine over and ensure a spark occurs.
>         6. Spark plug connections.
>                 Make sure wires and plugs are connected correctly.
>                 One mistake means that at least two cylinders (25% of
>                 the engine) is misfiring.
>         5. Compression
>                 Ensure all cylinders are within 15 PSI of each other
>                 and all are above 125. Consistant low means head and/or
>                 ring job. One, or a few, low ones means check the
>                 valve clearance.
>         4. Valves.
>                 Check clearence. Loose valves will contribute to bad
>                 compression.
>         3. Cap, rotor, points, condensor.
>                 Check cap for cracks. If you don't know or can't
>                 remember when they were replaced, put in new ones. It
>                 just isn't worth worrying about them.
>         2. Alternator, battery
>                 Check that the batery wires are tight and that
>                 the ammeter is pretty much in the middle
>         1. Timing BTDC
>                 I don't care what the manual says. Dynamically tune
>                 for at least 10 degrees before TDC.
> 
>         I'm sure that there's alot more so that this list can be enriched.
> 
>                         Jeff Nathanson
>                         '72 TR6
>

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