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Engine run-in procedure

To: spridgets@Autox.Team.Net
Subject: Engine run-in procedure
From: Ulix Goettsch <ulix@u.washington.edu>
Date: Fri, 25 Sep 1998 14:34:35 -0700 (PDT)
Reply-to: Ulix Goettsch <ulix@u.washington.edu>
Sender: owner-spridgets@Autox.Team.Net
Someone asked about engine run-in.

This is what the Mini Mania web page has to say:

Remove the banjo bolt at the upper rear of the engine and fill the passage
leading to the oil pump with motor
 oil. Replace the bolt. Fill the oil filter and replace. Continue to pour
the rest of the required amount of oil
 through the oil cap. Use a high-quality oil such as Valvoline, Castrol or
Pennzoil. Do not use synthetic
 lubricants of any kind in this engine at any time. (They are talking
about their own engines here.  Break-in should be done with non-synth for
sure -Ulix)

 Remove the spark plugs and turn over the engine until the oil pressure
gauge shows full pressure. 

 Re-install the plugs and prepare to start the engine. The carburetor
should have the jet tubes set 2 turns down
 from flush with the bridge and the needle(s) centered in the bore(s). 

 Start the engine and hold the engine speed at 2000-3000 RPM for at least
20 minutes. This ensures plenty of
 oil to the camshaft bearings. Speeds slower than 2000 RPM may starve a
cam of oil. You may want to do this
 during the day to avoid disagreements with your neighbors. 

 After this initial run-in, re-torque the cylinder head, HOT, to 50 ft/lbs
and readjust the valves according to
 your shop manual. 

 Do not exceed 3000 rpm for any prolonged period for the first 500 miles,
at which time, change the oil and
 readjust the valves. After this you may gradually increase RPM limits
over the next 1000 miles or so. 

    Ulix                                                    __/__,__        
.......................................................... (_o____o_)....
                                                           '67 Sprite


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