exhaust seal

pdean · Post by **pdean** » Wed Mar 31, 2010 2:55 pm

I have a 74 gt750 which has idled in the garage for the last 3 years with a rusty gas tank and gummed up varbs.

After cleaning and repairing the tank and a very careful cleaning of the carbs the dear old girl runs once again. Nice crisp exhaust note and just a bit too much smoke.

The problem i have is the seals between the exhaust down pipe and the balance pipes, The rubbber seal has perished and there is now a leak here which may or may not be harmful to the engine.

Could someone on the forum please direct me to where i could get these seals.

I love riding this bike and want to enjoy it extrs exhaust noise.

Thanks

Chef

Post by **oldjapanesebikes** » Wed Mar 31, 2010 4:50 pm

I'm sure other folks will chime in as there are several options available to you. What I do is replace the o-rings (still available from Suzuki) and use high temperature orange silicone to seal. Seems to work fine.

strainer · Post by **strainer** » Wed Mar 31, 2010 6:50 pm

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pdean · Post by **pdean** » Thu Apr 01, 2010 8:43 am

Thanks for the very quick response. I'll get them ordeered this weekend.

Chef

Post by **oldjapanesebikes** » Thu Apr 01, 2010 9:50 am

This is a link to a previous thread here about sealing the crossover couplings.

Originally, Suzuki sold a sealing compound to be used in conjunction with the o-rings under part number 99000-31020, but that hasn't been available from Suzuki for years. You can still buy it from Reiner Schneider (GTReiner1@aol.com) in Germany - its about 22 EURO plus shipping and a package gives you enough for a lifetime. Some folks on the board have used glass caulking that you can buy in rolls but I think most use the high temp orange silicone.

Good luck !

tz375 · Post by **tz375** » Thu Apr 01, 2010 10:08 pm

Ian,

We used to buy a muffler bandage material in the UK that reminds me of what I imagine teh stock sealer is like. Is something like that still available, or is it better just to fill the gap with RTV?

Post by **Suzsmokeyallan** » Fri Apr 02, 2010 8:54 am

One of the problems with the crossovers is they can open after time and then leak easier. I could never figure out why they didnt use springs as seen on the GT550s.
Fitting some sort of retention device even if it was only a lowly wire strap between the connectors would make a world of difference as well.

Post by **oldjapanesebikes** » Fri Apr 02, 2010 9:37 am

tz375 wrote:Ian,

We used to buy a muffler bandage material in the UK that reminds me of what I imagine teh stock sealer is like. Is something like that still available, or is it better just to fill the gap with RTV?

Don't know for certain - I'm sure there are a number of options. I do know that the silicon does seem to work. As Allan indicates, whatever you use has to stay a bit flexible to prevent leaks due to the vibration over the longer term.

tz375 · Post by **tz375** » Fri Apr 02, 2010 1:27 pm

Did anyone have that part number?

TIA

Post by **oldjapanesebikes** » Fri Apr 02, 2010 2:04 pm

tz375 wrote:Did anyone have that part number?

TIA

Sorry - part number for which ?

tz375 · Post by **tz375** » Fri Apr 02, 2010 9:01 pm

The O rings

The post it was listed in has been removed.

Post by **oldjapanesebikes** » Sat Apr 03, 2010 8:42 am

tz375 wrote:The O rings

The post it was listed in has been removed.

09280-44003 superceded to new number 09280-43002, quantity 4 required at around $1 each from Suzuki.