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Exhaust gaskets at the head reusable?

  • Thread starter Thread starter GS1000G Shopper
  • Start date Start date
Alleluia, praise be, and thank you for this thread!!!

Been searching and searching for an authoritative thread concerning exhaust flange studs... specs, how to calculate what I need, where to buy... Woohoo! And the dang links still work! Double woohoo! :clap:

GS1000G Shopper, you're my new hero.
 
Hey as long as I'm riding the wave of all your research, measurement, and documentation, any of you guys know if these same measurements might apply to an '81 GS850? Is your exhaust stock?

Thanks again!
 
Thanks. Donations can be sent to... ;)

I like to write tech threads so guys like you can come along months/years down the road and get some help.

soapbox.gif

The one thing that really upsets me when I have a vehicle problem is to find a posting of someone having the same problem & then posting "Hey, I fixed it." with no solution offered.

/ soapbox

I'd look at an online parts listing for the 850 & 1000 to see if the same part # is used for both bolts (presuming they're still available). If so, it's a fairly safe bet the above would work.
 
So after reading this thread I checked out allen's fasteners, and they have a 65mm stud available. In your previous post you lamented that you would like more than 10mm of thread available, so would you in turn suggest the 65mm over the 50mm?
 
OK, here's the scoop -

GS850GX Stock flange bolt -
1807056 (465651-001)

GS1000GX Stock flange bolt -
1019880 (465653-001)

So the bolts are not the same, I think the number in parentheses is the Suzuki part#. However, does anyone read Suzuki Partnumber-ese? Could these be a 51mm vs a 53mm bolt?

Meanwhile, for what it's worth, the exhaust gaskets ARE the same.

GS850GX Stock exhaust gasket -
1052343 (484407-001)

GS1000GX Stock exhaust gasket -
1052343 (484407-001)

And a side question - the purpose of the copper nuts is... because they're locking? Single-use, deforming, like a crush washer?
 
Roostabunny said:
And a side question - the purpose of the copper nuts is... because they're locking? Single-use, deforming, like a crush washer?
Click to expand...

Self locking and being that they have different expansion rates than ferrous metal and are corrosion resistant they won't seize.
 
afholderman said:
So after reading this thread I checked out allen's fasteners, and they have a 65mm stud available. In your previous post you lamented that you would like more than 10mm of thread available, so would you in turn suggest the 65mm over the 50mm?
Click to expand...

I'm neck deep in 25 year old Honda gauges now, so I had to re-read my post & look at my original diagram, and then look at what Allen's has. They list the 65mm as an M8x1.25 x 22 and M8x1.25 x 10, so the threaded parts are no different. The length is made up in the unthreaded portion. Reversing the 65mm stud on my diagram so you could run it another 6mm into the head, and you'd have no threads to attach the nut to. The 65mm also would not work since it would be too long, as I recall there is a clearance issue due to the down tubes on the frame.

I've had zero issues with the Allen's 50mm so far, and use the bike at least once a week.

OK, here's the scoop -

GS850GX Stock flange bolt -
1807056 (465651-001)

GS1000GX Stock flange bolt -
1019880 (465653-001)

So the bolts are not the same, I think the number in parentheses is the Suzuki part#. However, does anyone read Suzuki Partnumber-ese? Could these be a 51mm vs a 53mm bolt?
Click to expand...

I looked at my Suzuki parts place & got this for the bolts into the head (they're in the muffler section):
'80 & '81 1000G:
BOLT
01500-08453 (replaces 01107-08458)

'80 & '81 850G:
BOLT
01500-0835B (replaces 01107-08358)

I looked at an '81 650G as well:
BOLT
01500-0840A (replaces 01107-08408)

My guess would be it is a slightly shorter length. I don't get the part number system at all. Honda sometimes gives dimensions, and yet labels identical parts w/ different numbers- i.e. the sender gasket on my Sabre is 39 x 5mm, which is the same as the newer VFR800. The parts listings show identical dimensions & the senders bolt up exactly the same w/ the same pattern, yet the gaskets carry different part numbers. :confused:

Allen's fasteners are dirt cheap- I'd suggest buying a set of both 45 & 50mm like I did & using whichever one fits best.
 
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