THC said It's my fault
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Seasoned HDF Member
Joined: Apr 2011
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From: W. Texas
THC said It's my fault
Ok in shooting the bull with THC about him putting his basket case back together. The cam timing marks came up and I mentioned I thought the crank had to be set at #1 TDC. Well this got him thinking (yea my bad) and he went to cking the FSM. He called me back and said there was no mention of doing so in either manual he has. I went to reading in my 97 FLT manual and I didn't find it mentioned either.
I read Spanners sticky about Kees bike and found no TDC reference there
Other than lining the timing marks up before taking things apart which THC's bike being a basket case he doesn't know if that was done.
I may have reverted to my auto background. Again my bad
Is it because of the 3 timing marks used that might make it unnecessary to have TDC set on #1 or atleast one of the 2 cylinders?????
Thanks for your time folks WP
I read Spanners sticky about Kees bike and found no TDC reference there
Other than lining the timing marks up before taking things apart which THC's bike being a basket case he doesn't know if that was done.
I may have reverted to my auto background. Again my bad
Is it because of the 3 timing marks used that might make it unnecessary to have TDC set on #1 or atleast one of the 2 cylinders?????
Thanks for your time folks WP
Road Warrior
Joined: Oct 2011
Posts: 1,376
Likes: 36
From: Round Rock, TX
Ok in shooting the bull with THC about him putting his basket case back together. The cam timing marks came up and I mentioned I thought the crank had to be set at #1 TDC. Well this got him thinking (yea my bad) and he went to cking the FSM. He called me back and said there was no mention of doing so in either manual he has. I went to reading in my 97 FLT manual and I didn't find it mentioned either.
I read Spanners sticky about Kees bike and found no TDC reference there
Other than lining the timing marks up before taking things apart which THC's bike being a basket case he doesn't know if that was done.
I may have reverted to my auto background. Again my bad
Is it because of the 3 timing marks used that might make it unnecessary to have TDC set on #1 or atleast one of the 2 cylinders?????
Thanks for your time folks WP
I read Spanners sticky about Kees bike and found no TDC reference there
Other than lining the timing marks up before taking things apart which THC's bike being a basket case he doesn't know if that was done.
I may have reverted to my auto background. Again my bad
Is it because of the 3 timing marks used that might make it unnecessary to have TDC set on #1 or atleast one of the 2 cylinders?????
Thanks for your time folks WP
Edit: The overhead cams in my Suzuki, WERE indexed at TDC on the front cylinder. A necessary reference point when you have chain driven cams and can't see the pinion gear at that point anyway.
Last edited by Owtlaw; May 3, 2015 at 09:20 AM.
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Seasoned HDF Member
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From: W. Texas
Outlaw
A friend was over(2 yrs ago) when we put mine back together, he's a HD tech.
I flat can't remember if we did or did not set things up on TDC.
I'd bet money we did though.
If I was in the middle of doing this I'd be asking too.
WP
Ahhh Both connecting rods are on the same journal, well one is just a little lower best I remember.
A friend was over(2 yrs ago) when we put mine back together, he's a HD tech.
I flat can't remember if we did or did not set things up on TDC.
I'd bet money we did though.
If I was in the middle of doing this I'd be asking too.
WP
Ahhh Both connecting rods are on the same journal, well one is just a little lower best I remember.
Last edited by WP50; May 3, 2015 at 09:49 AM. Reason: Light came on
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
The crankshaft timing gear is keyed onto the crankshaft and the cam is the only other gear. With the pushrods removed, which is inevitable, we are essentially building up the engine from first principles, after installing the cam with the marks aligned. So it doesn't matter where the pistons are, as the timing marks are the beginning and end of the build process!
Hope that helps.
Hope that helps.
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
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From: la la land jerzey
take out the two plugs - with the rear tire up in the air turn the rear wheel counter clockwise - with a plastic tube - straw - in the front cylinder rotate the motor with the wheel till the straw tops out ( move the wheel back and forth to get the center look in the timing hole that that is the mark for TDC -- BUT it still might be on overlap sooooo - look into the rear plug hole you will see the intake valve open a bit if not look in the front plug hole for a open valve - you could also use a length of 3/8 hose and put it over the sparkplug hole and blow into it / if it blows right through in the rear plug hole you are on front TDC compression stroke - Then set your timing static location right in the center spot ( little light on ignition ) of the mark in the center of the timing plug hole - your good to go
it is different if you have a stock ignition i did not read all of this - if so turn it to the center and use a timing light to confirm
some pinion gears look as if they have more then one mark on them but if it was runing and that was not removed or moved then forget that idea
it is different if you have a stock ignition i did not read all of this - if so turn it to the center and use a timing light to confirm
some pinion gears look as if they have more then one mark on them but if it was runing and that was not removed or moved then forget that idea
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Seasoned HDF Member
Joined: Apr 2011
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From: W. Texas
The crankshaft timing gear is keyed onto the crankshaft and the cam is the only other gear. With the pushrods removed, which is inevitable, we are essentially building up the engine from first principles, after installing the cam with the marks aligned. So it doesn't matter where the pistons are, as the timing marks are the beginning and end of the build process!
Hope that helps.
Hope that helps.
WP
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Thread Starter
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Seasoned HDF Member
Joined: Apr 2011
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From: W. Texas
No idea how things were took apart or the position of things now. Basket case
Thank You Sir
WP
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
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From: Coromandel Peninsula New Zealand
The crankshaft timing gear is keyed onto the crankshaft and the cam is the only other gear. With the pushrods removed, which is inevitable, we are essentially building up the engine from first principles, after installing the cam with the marks aligned. So it doesn't matter where the pistons are, as the timing marks are the beginning and end of the build process!
Hope that helps.
Hope that helps.
Nissan Chain drive 4 cylinder car motors are set with all the pistons around halfway up the bore, this is so you can bolt the cams into the head without bending valves.
Yeah, useless trivial facts make the world go around.
Moral of the tale....believe in the timing marks, ignore what is going on with the pistons.
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