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Time to start 55 960 and break in engine

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Brad_bb

08-20-2007 14:53:33




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Well the time has come to push ahead and try to finish my 55 960. It"s been a year and needs to be finished. I"m planning to be ready to start and break in the newly rebuilt motor this coming Sunday, but I know that something could crop up that could push it to the following weekend. I would like to solicit any advice or procedure recommendations. I have to do some reading in the IT manual, but I"m wondering if there is any adjustment needed to rockers? Is there a prime tool for the oil pump available? Once she"s started, how many RPM should it be run at and for how long for break in and seating of the rings? I will change oil right after. I am confident I can adjust the carb and timing close enough for the start and break in. I am familiar with tuning a old car engine, but not sure if my equipment and procedure will work on the tractor. On classic cars you adjust the idle screw to get max vacuum and max RPM. There"s no port to measure vacuum with though! I"m going to have to research this as I haven"t messed with the carb since I rebuilt it two years ago. Any tips appreciated.

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GlenIdaho

08-20-2007 18:45:27




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 Re: Time to start 55 960 and break in engine in reply to Brad_bb, 08-20-2007 14:53:33  
Hi Brad;

I asked a similar question a while back but have been delayed in the start up. As for the rockers, they may need to be adjusted after running a bit. For priming, I made a tool using a small socket welded onto an old 302 Ford dist. drive shaft as an extension. Remove the distributor, attach the tool and use a cordless drill to turn the pump. It worked great. I watched as the oil flowed out the rockers. Also, and I'm sure you know this, after run the engine for a few hours re-torque the head.

Also, my computer was attacked by a virus and it wiped ooout my e-mail addresses. Could you send me yours. Thanks Glen

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soundguy

08-20-2007 15:17:28




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 Re: Time to start 55 960 and break in engine in reply to Brad_bb, 08-20-2007 14:53:33  
If it were me.. I'd put on a fram ph8a oil filter and put in some cheapy supertech sae 30w oil and use that as a few hour break in oil.. say 10 hr.. and also have another fitler on hand, and change it at 1 hour.. that first filter will probably grab flecks and shavings from the rebuild that may have been missed.

After warming her, yuo will probably want to check that head and valve clearances anyway.

Ont he carb.. I usually tweak the mainject for smooth acceleration and no stumbling.. but no sooty exhaust.

I tweak the idle air while at low rpms.. you can adjust low rpms by the idle stop screw.

On a new engine i usually add a tablespoon of oil to each cyl and roll it over with the starter with the plugs out, then put the plugs in. on a tight rebuild you may want a 12v battery to boost the starter, and keep the 6 for the ignition.

I assume assembly lube was used on all bearings.. etc? if so.. if all goes good.. and the pump was packed or lubed with assembly lube.. she should start sucking oil as soon as she spins over.

For sure if the oil gauge don't do nothing in about 10 seconds.. shut her down and check for flow a the oil line to the gauge while spinning her over. All my 134 and my 172 engine will make oil spurts at the oil line with just the starter spinning over.. etc..

I like to work new rings and new sleaves at a variaty of rpm..all the way from low to high.. and DO work her.. don't baby her.. but I wouldn't set her at a single rpm and leave her.. like.. I wouldn't mow for my first break in chore.. I'd do a variety of tasks that day..

Soundguy

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