Suzuki 2 Strokes

It is often reported that the coupled exhausts of the J, K & L models are problematic and very difficult to stop leaking? Is this really the case?

I am looking at possibly buying a L model but would like to know how much of a problem it really is? I would not wish to block them off, so do they really leak constantly or in this day and age are there suitable methods, processes and/or sealants that keep the joints leak tight?

I have a 550 J with crossovers. They are sealed by a silicon o ring externally and a gasket sealant at the end of fitting. Mine never leak and nor will yours if you fit them properly. \\\\the system I use is to assemble the exhaust and fit it to the bike loosely then using a ratchet tie down across the width of the exhaust close to the crossovers. Then tighten the collars. Leave overnight for the joints to dry and remove the tie down. Simples!
Look here
http://www.3cyl.com/mraxl/gt/manuals/gt ... 550-28.htm" onclick="window.open(this.href);return false; (7-3-2

I just did my 550 as well. Same method, same tie down, but I used high temp RTV and plenty of it on the cross overs. Enough of it to squish out and seal in the bottom of the 'cups'.
The RTV I used was Versa-chem Mega Black.

Thanks for the replies. It seems that sealing the couplings is not such a major issue.

It's sorta like a paint job. Most of the work is in the prep. I'll be the first to admit that digging the OEM sealant out of the cups is nearly impossible. What I couldn't get out, I let the RTV fill the voids.
When shopping, look closely ate the 'cups' to make certain that none are bent. What I am calling cups are the recesses the cross overs fit in to.. If a cup is bent or deformed, it's likely to never seal..