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Turning Distro without changeing timing
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MadCow View Drop Down
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Joined: 27 Aug 2023
Location: South Dakota
Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MadCow Quote  Post ReplyReply Direct Link To This Post Topic: Turning Distro without changeing timing
    Posted: Yesterday at 2:48pm


For some reason my distro is 180 degrees off, so my tach drive isn't facing the right way. I "should" be able to turn it in increments of 60 degrees as long as I change which sparkplug is plugged where, right?

Or do I need to pull it completely and turn it and retime?

I will be timing the motor regardless, but I dunno really want find TDC.
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DiyDave View Drop Down
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Points: 54856 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 3:27pm
Is it a D series tractor?
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Joined: 27 Aug 2023
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Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MadCow Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 3:30pm
Sorry, 190xt
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steve(ill) View Drop Down
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Points: 89575 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 22 hours 55 minutes ago at 4:10pm
normally people want the #1 plug wire in a specific location.. if you dont care, then yes you are right.. rotate the distributor and cap 180 degrees and move the wires the same... It all depends on where the ROTOR is pointing and it will move 180 degrees with the distributor.
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This much, I know. The distributor rotor/shaft cannot be turned 180 degrees. It only fits in the engine one-way, not two ways. So, with that in mind, proceed.
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Points: 34466 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 16 hours 7 minutes ago at 10:58pm
Tach drive was forward on all 190/XT gas tractors as far as I know.
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Use a longer cable?
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Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MadCow Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 30 minutes ago at 9:35am
I can't imagine the drive cable is supposed to point forward and turn around a 180 degree bend to the tach, that would cause significant wear on the cable. But I don't know for sure. It's also angled too close to the block cable physically won't screw on. So I would at least need to move 60 degrees. 

The rotor/shaft won't be turning, just the housing and cap, so I shouldn't have issues with that. 

The #1 spark plug wire will be in a different hole in the cap, but will be in the same place relative to the rotor. The same absolute place in space. 
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If someone has an Owners manual to an early 190/190XT, I'm sure there is a picture of the left side of a gasoline engine and that would verify how things were positioned. The later model tachometers were driven by the alternator.
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Joined: 27 Aug 2023
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Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MadCow Quote  Post ReplyReply Direct Link To This Post Posted: 4 hours 47 minutes ago at 10:18am
Originally posted by DrAllis DrAllis wrote:

If someone has an Owners manual to an early 190/190XT, I'm sure there is a picture of the left side of a gasoline engine and that would verify how things were positioned. The later model tachometers were driven by the alternator.

Looked through, only shows the diesel left side. 
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