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| Buchanan Jr. 4 Compression |
| Author |
Message |
    
jamesosler
Visitor
| | Posted on Sunday, August 22, 2004 - 08:14 pm: | 
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Its been Rebuilt But the battery cant turn the engine over fast enough. The battery is fully charged it just cant turn it fast eniugh. I removed the plugs and turned it over effortless. So I beleive there is too much compression that the batery is fighting. I would like to drop a little compression, Any help.
James |
audie
Visitor
| | Posted on Monday, August 23, 2004 - 07:30 am: |
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James, I would look more to the starter as my problem. Sometimes the windings in those things are shorted internally and not to ground. That makes them weak with a full load on them. Also make sure all connections are really clean and tight. Are the cables the right size and not to small? Just some thoughts away from compression. |
miro
Senior Member
Username: miro
Post Number: 147
Registered: 11-2001
| | Posted on Monday, August 23, 2004 - 10:13 pm: |
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Audie's comments are good pointers.
I found the same thing - the starter just kinda grinds away and does not turn the engine over smartly. That what these engines needs - a smart turm and they'll run easily.
My solutions was to put a second 6V battery in series with the starter lead to hit the starter with 12V - but everything else is 6V incl the solenoid.After almost 10 years of this treatment there is no sign of wear or damage.
I suspect it si because the starter does turn over very much compared to the slower speed at 6V.
I had actually bent the starter drive shaft trying to start the engine on 6V - it coughed backfired and engaged the bendix and bent the shaft slightly. I simply took it apart, bashed it in the right spot to get it true again .
I've recommended to a number of Buchanan owners and all of them have found it to be OK. Just make sure that if the engine doesn't start quickly - don't keep trying to start it on 12V. FInd out what the problem is .
miro |
James
Visitor
| | Posted on Tuesday, August 24, 2004 - 08:22 pm: |
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I have a Junior 4 I would like to sell but have no idea where to post it. Here I guess!
Its a complete motor, running when I took it out of a plywood cruiser a few years ago. Stored indoors ever since. If anyone is interested please email me at jetboatin at yahoo.com
I have the strut,prop, propshaft, stuffing box etc
I will take pics soon and will do a comp test as well
I'm in Toronto by the way
thanks |
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