Lack of top end power/speed

[earlfor]

Hmmm, now that you mention it, I do believe a lot of the 650 parts could work on a 750. :-) I've been looking for a set of mags for the bike and if you have mags and want to sell them....wellllll...
I would get my wheels and your bike would be much safer. :-)
We both win. :-) :-)

On another note...I think your bike probably needs some tuning.
I expect it should top out in the 115-120 range and not waste any time getting there either. When all is right, I think youre going to find the 650 is plenty fast enough for you and actually a little much to learn on. There's enough there to get you in "deep stuff" real quick. :-) I've crashed three times (though not recently) and trust me, its not something you will like. :-) I just hate looking down from a flying launch and seeing the car tops of traffic going under me. LOL

Earl

Well I'll live for now, as my bank account will not acomadate a trip to the bar let alone a GSX-R 1000. Riding extremely fast may be alot more fun than riding slow, but riding slow in still infinately more fun than being crippled or maimed.

Now Earl, if I rode a 1979 GS750EN that would be parted out, should I crash, I'm sure you'd be egging me on! 8O
"Now Curt, when you do a 9 grand clutch drop, lean as far back as you possibly can." 8O "Naw, you'll never lift the front" :twisted:

[Anonymous]

Earl,
I take it you have high-side experiance?

I just hate looking down from a flying launch and seeing the car tops of traffic going under me.

[focus frenzy]

Back to the subject of this thread:
you do not have points, suzuki finaly changed to electronic ignitions in 1980.
first question: what is your fuel milage in highway running? (you should be getting better than 40mpg on the highway)

It sounds like you are having a ignition problem, suzuki didnt put a very powerful ignition system on these bikes, it doesnt take much to cause problems.

check your spark plugs, make sure that the gap is within spec, (.024-.031") make sure that the center electrode is flat on top and not rounded.
the center electrode should be a light gray to light brown color, or better yet just replace them with new plugs. (make sure to set the gap on the new ones)
if the plugs check out or you put in new ones and still have the problem, start at the ignition pickups, (under the round cover on the end of the right side of the engine) and trace the wires back too the ignition control box (small black box with eather six or eight wires) checking all the conections for tightness and no corosion, then follow the wires to the coils checking those conections.
also check and clean the terminals in the fuse box (the ignition fuse is the third one down from the top, the wire will be orange with a white stripe).

[focus frenzy]

I've been looking for a set of mags

Hey I know where some nice ones are, Factory suzuki's!!!

[Jay B]

No power.

OK First things first. You have an electronic ignition so no points to worry about. SOmeone mentioned it earlier that you are probally having a breathing problem which is true. Its more than likly one of 2 things. Your not getting enough air or not getting enough fuel or the combination of both. With in the last couple of days someone posted a link about tuning carbs and what each needle and/or jet does. I read it and now I understand alot more than I did before when someone would give me advise. Find that link and print it out. It sounds like the bike is not getting enough fuel air mixture at the higher rpm's. A bigger main jet could solve that. But with a bigger main jet comes the need for more air to keep the mixture right. While you are waiting for your bank account to get a little bigger to get your manual read everything on this site that you can on carburation.

[Anonymous]

And while you're following Jay's advice, you can also go to www.bikebandit.com and look up your bike...Use OEM Parts for the 'step 1' selection, then use steps 2 and 3 to select the year and manufacturer, then choose 'GS650(Z)' for step 4. That will get you to a list of all the parts for both the GL and E models of the bike. Just be careful that the page you're looking at is really the one for the GL, not the E! I saved and printed each page for Spouse-o-Mouse's bike...it's been a very handy resource.

[earlfor]

I'm all ears. :-) To fit a 79GS750 or??? $$??? size??
you can post the info to my email if you like.
haveblue148@yahoo.com

Earl

I've been looking for a set of mags

Hey I know where some nice ones are, Factory suzuki's!!!

[Anonymous]

Focus -

I'm getting about 45 mpg on the highway.

Everone -

It's gotta' be a carburation problem, and it only exists about 5000 rpm's and up.

Thanks for all the advice and I'll post the results as soon as I get the girlfriend off my back long enough to work on Suzi! :roll: