Exhaust Baffle

[dewey11803]

Hello all!!
Not sure if this is the right area to ask this question.
I tried the search engine in the GSRescources and could not find the answer to my question, so here it is.
I have 78 GS750 I bought a couple of months ago with the stock 4 into 2 exhaust. I just bought a 4 into 1 exhuast from Ebay for $28.00, great deal.
I received it today and it does not have any packing (sorry I am no mechaninc so ignore the non-techincal descriptions) in the baffle. The exhaust does not have a name on it.
Can I buy packing for this or do I need it? If so, any reccomendations on where to get it. It does not have an end cap.
Also, will I have to re jet the carbs?
Thanks for any information and the great site.
Thanks
Allen

[duaneage]

You can pack it with fiberglass, pack it tight.

Rejetting depends on a lot of factors, like if you have pods or an airbox. You will have to test it and see how it runs and do a chop test.

The chop test is running at or near full throttle in 4th or 5th gear and then killing the engine. When you pull a plug you should see if it is lean or rich. It is probably going to be a little leaner than with the stock exhaust.

Everything else needs to be in good shape. Points, plugs, air filter nd carb sync should be OK before trying to rejet for a pipe. Failure to do any of these steps means your going to be wasting your time.

Post a picture of what you bought (or the ebay link to it) and maybe someone can identify it and advise you on jetting.

[dewey11803]

Thanks for the information!
What about the missing cap on the end of the baffle? Can I find a replacement for that?
I found a complete replacement muffler on oldbikebarn for about $35.00.
The headers seem to measure up to my stock exhaust even though I have not tried putting it on yet, I will this weekend.
This is the Ebay link if anyone has any ideas:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4598022887&sspagename=STRK%3AMEWN%3AIT

Thanks again
Allen

[sidd]

I would be inclined to think that you'll find a replacement muffler long before you'd find just the missing cap.