timming


Information and questions on GL1100 Goldwings (1980-1983)
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ernest rudshtein
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Motorcycle: 1980 gl1100 interstate

timming

Post by ernest rudshtein » Tue Jan 16, 2018 1:41 am



hi goys
quick question about timming marks
the marks on the pullyes aligned on the T-1 mark with the F undet it before i took the heads off for a gasket change (both sides)
is that the right position or sould i turn it to a different T mark before reassembly?
thanks
ariel


Probably the only goldwing with a surfing rack

DaveO430
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Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: timming

Post by DaveO430 » Tue Jan 16, 2018 7:42 am

Why would you think it would go together different than it came a part? If you will notice while the heads are off, with the T1 mark showing both 1&2 pistons are at the top of the bore, that's what it means. If you turn it to T2 #3&4 are at the top, you could put it together like that but you would place the "up" marks on the cam pulleys at the bottom.

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ernest rudshtein
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Re: timming

Post by ernest rudshtein » Wed Jan 17, 2018 1:19 pm

Hi dave
yes, number 1 and 3 cylinders are at top end.pullyies will go in with the up mark facing up.
another question
the gasket i removed was an after market one- failled horribly. how can i check if the head was flatend in the past? if so, will it change the valve clearance' if ill take it to a machineshop to be flatend once more?
dont wanna end up loosing compression

regards
ariel
Probably the only goldwing with a surfing rack

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thrasherg
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Re: timming

Post by thrasherg » Wed Jan 17, 2018 3:52 pm

I answered this in another post, skimming the head to make it flat has no effect on the valve clearances, you set them to the standard clearances. It doesn't matter if the head has been skimmed before or not, what matters if it is currently flat. When you skim the head it does increase the compression ratio by the tiniest of amounts, so don't worry about it.

To check if your head is flat or slightly warped, you need a high quality 12" steel ruler, you usually lay it diagonally across the head and use feeler gauges to measure any gap between the ruler edge and the head.
To try and make it clearer, place the head upside down (so you can see the combustion chamber and valve heads) on a desk. Then get your steel ruler and place it diagonally across the head so it goes from one corner of the head to the diagonally opposite corner, you keep the ruler vertical (don't lay it down on the head) and then take a very small feeler gauge and see if it will slide between the cylinder head and the edge of the ruler. If you can get any gauge large than 3 thousands of an inch between the head and the ruler, then your head probably needs skimming flat. Many engineering companies will check a head for free if you take it to them, just make sure it's a trustworthy company as some will just skim the head whether it needs it or not and charge you, just wastes your money but does no real harm if the job is done correctly.

Gary
Last edited by thrasherg on Wed Jan 17, 2018 9:16 pm, edited 1 time in total.

DaveO430
Posts: 178
Joined: Fri Jan 02, 2015 7:28 pm
Location: Amity. Ar
Motorcycle: 2010 GL1800
2004 Suzuki DR200

Re: timming

Post by DaveO430 » Wed Jan 17, 2018 4:26 pm

ernest rudshtein wrote:
Wed Jan 17, 2018 1:19 pm
Hi dave
yes, number 1 and 3 cylinders are at top end.pullyies will go in with the up mark facing up.
another question
the gasket i removed was an after market one- failled horribly. how can i check if the head was flatend in the past? if so, will it change the valve clearance' if ill take it to a machineshop to be flatend once more?
dont wanna end up loosing compression

regards
ariel
If #1 & 3 are at the top at the same time you got a problem.

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ernest rudshtein
Posts: 21
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Location: israel
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Re: timming

Post by ernest rudshtein » Thu Jan 18, 2018 5:37 pm

gary, tnx brother. made a few phone calls and found a trustworthy guy few miles away.
will check it my self as well for the practice

dave- super funny type-o ahh..if 1 @ 3 are up its really a problem ahh?:) - ment number 2 cylinder of course.

ride safe
ariel
Probably the only goldwing with a surfing rack

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ernest rudshtein
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Location: israel
Motorcycle: 1980 gl1100 interstate

Re: timming

Post by ernest rudshtein » Tue Jan 23, 2018 1:18 am

guys' does anybody know the size of the 6 rocker/ camshaft holder bolts?
i have one that needs re-threading
tnx
ariel
Probably the only goldwing with a surfing rack

DaveO430
Posts: 178
Joined: Fri Jan 02, 2015 7:28 pm
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2004 Suzuki DR200

Re: timming

Post by DaveO430 » Tue Jan 23, 2018 7:44 am

ernest rudshtein wrote:
Tue Jan 23, 2018 1:18 am
guys' does anybody know the size of the 6 rocker/ camshaft holder bolts?
i have one that needs re-threading
tnx
ariel
They are 8x1.25mm.

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ernest rudshtein
Posts: 21
Joined: Sun Oct 01, 2017 2:15 pm
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Re: timming

Post by ernest rudshtein » Thu Jan 25, 2018 1:12 am

thanks dave
orderd a helicoil set for 20 $' 8 *1.25
will do it today' hopefully to start the bike' finally
ariel


Probably the only goldwing with a surfing rack

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