Question on GS engine.

[SuperCell]

Well, I'm offically the owner of a 1986 GSXR750.

The bike needs carb work, which I can handle and is no big deal.

I would just like to get an opnion regarding the engine. The milage is very high at 45,000. Since this is a winter project, should I go through the engine and basically "overhaul" it, or can I expect that there is still a lot of life left in that engine???

Just need opinions. If it's only good for another 20,000 miles or so, I might as well look into rebuilding it.

Thanks.

[Steve]

Somehow, I have a problem categorizing 45,000 miles as "very high". :shock:

Yeah, I am accustomed to driving Toyotas for over 300,000 miles with no problems, but I have also had a Kaw Voyager that I sold with 93,000 to a willing buyer. I bought my Wing two years ago next week with 91,000 miles on it, it now has 124,000. My wife's 850 is sitting in the garage right now with 58,047 miles showing.

I would suggest a compression check, then monitor oil useage for a while. If it does not use much oil, chances are that the engine is still in good shape. Just ride it and don't worry about it. 8-[


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[tkent02]

Ride it, 45,000 is nothing for these GSes, if there 's been oil changes along the way. Chances are it will need nothing for years.

[Nessism]

Those early GSXR bikes were hammered on pretty hard by most owners. The condition of the engine will have a lot to do with how hard it was used and how well it was cared for. I agree with Steve to check compression and oil consumption. My guess is that if you get 20k more miles you will be doing about right given the normal usage of that type of bike.

[SuperCell]

Wow, not sure what to make of this, and a little ****ed.

The frame tag claerly says GSXR1100, but the engine is stamped 748cc.

My guess is someone blew up the original engine and installed a 750..???

Were the 750 and 1100 chassis the same?

[Suzuki mad]

Thats strange. Most guys in the UK go the other way and shuve a 1100 lump into a 750 frame. So with that thought they must be compatible but I must also say I have never tried it.

Early GSXR's were racer straight out of the crate so may well have had a hard life. I know the 1100 has plain shell bearing against the GS's roller bearing so oil quality is important.

As for strip and rebuild that can only be decided on condition, burning oil, compression performance etc.

Suzuki mad