GS750T Top Speed Question

[Guest]

Hi. I was wondering approximately what the top speed of a 1982 GS750T is supposed to be around. Reason I'm asking is I think my tachometer may be having issues. Only had the bike 3 weeks. It had the floating/jumping tachometer problem. As suggested by others here on the forum, I removed the tach cable, pulled the inner cable out of the sleeve, shot WD-40 down into the sleeve to loosen the gunk and blew it out with compressed air. Then I shot some chain/cable lube down into the sleeve and re-inserted the inner cable and re-installed. Previously with the jumpy tach, I was running about 5500-6000RPM at 55mph in top gear. Now its more like 6000-6500RPM at 55. Speedo reads 85, and previously I could bury the speedo quite a bit before redlining the engine. I'd guess somewhere around 100MPH. Now I hit the 9500RPM redline at just over 80MPH. Seems a bit off to me, like the tach is reading too fast at high RPM.

So my question is, should this bike top out at 80MPH, or is my tach wrong?

[Nessism]

Something wrong with your tach.

Chain lube is the wrong stuff to lube the cable with. It's too sticky once the solvent evaporates. You need to use regular oil on the cable or some cable lube spray.

[Matt420740]

I used some brake cleaner to get the chain/cable lube out, blew it out again and drizzled some 40w motor oil through the sleeve. Still reading high. Speedo is having a few issues too, so may just end up switching to a digital setup or something.

[Boriqua]

at 55mph with my tach reads about 4200rpm. I have been to 80mph and its no where near 9500. 75 was only around 5200.

[David 750]

Hi there i have a gs750t 1982 on mine at 55 miles per hour it reads 4200 rpm at 80 miles per hour it reads 5800 rpm nowhere near top speed this bike does 130 for sure

[mrbill5491]

I've had mine at close to 9,000 in top gear and that figures out close to 116, I was surprised, it was a day that was cool and the air heavy for a change at 4,000ft, though just would not pull to 9,500, never really has in top gear, 4th gear yes. 120 is pretty much top end for these 750s on a good day. 130, don't think so.
Oh, a friend of mine was on her BMW next to me and said we were between 110 and 117, then she pulled away lol.