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GS550E 78 big bore kit

  • Thread starter Thread starter dfgood
  • Start date Start date
D

dfgood

Guest
Hi all, I am looking around to see if anyone has seen the Wiseco big bore kit (620cc) for the early model GS550. I believe it was available a number of years ago but was discontinued. Any leads would be appreciated.
Thanks
 
Good Luck. Anything for the smaller displacement engines in terms of aftermarket is long gone.
 
Hen's Teeth...:cry:
Put a top end off a GS650E on it. Search the posts by "Nerobro", or PM him. I'm sure He'll point you in the right direction.
 
8trackmind said:
Hen's Teeth...:cry:
Put a top end off a GS650E on it. Search the posts by "Nerobro", or PM him. I'm sure He'll point you in the right direction.
Click to expand...

What advantage will that give you. Are the valves bigger, cams different, etc.
 
For my twopenn'orth the Wiseco kit, whilst nicely made and a quality item, isn't worth the expenditure. I fitted one many moons ago on a bike long since sold. The kit was second hand then but still cost me a good few shillings. I also had some special cams and played with various carbs. You can make a 550 quicker but the power gains per dollar are pretty low. I think I would have been better advised to lighten the bike - they are pretty heavy stock.

Wally
 
8trackmind said:
Top end = pistons, barrels, head etc. More displacement.
Click to expand...

Yes I get it now. my mistake. In OZ top end means cylinder head only or in the people I hang out with anyway.

Cheers Don

P.S. That means I can give my 550B some more zip. All I have to do is find one. Is the 550 and 650 bottom end all the same.
 
Hey howdy hey!

Hey howdy hey!

Mr. dfgood,

Let it be known that on this day you are hereby cordially and formally welcomed to the GSR Forum as a Junior Member in good standing with all the rights and privileges thereof. Please note that pictures can only improve your good standing! (Not you, your bike!) :-D

Good luck with your project. Let us know how you fare. Thanks for joining us.

Thank you for your indulgence,

BassCliff
(The unofficial GSR greeter)
walmart_greeter2.jpg
 
ha all the pictures are gone. I'll see if Nerobro still has them and I'll try and get him to put them back up.
 
weight loss problem

weight loss problem

Hampshire hog I am rebuilding a 550 Katana and am interested in your comments about lightening the bike to gain better performance.Could you explain how/where weight could be saved?





one day this Kat will wail again
 
Basically with weight saving it depends how much you want to spend or hunt around at bike jumbles. Most of it is incremental too so you can do bits and pieces as you go. From memory this is what I did to a GS550 a while back:

1. Harris Works pipe - I could have got lighter I'm sure but this was cheap second hand and had 'period' charm. Nice zorst note too.

2. Junk the pillion pegs and replace those heavy front pegs with alloy ones. Chop the frame mounts as they aren't needed now.

3. Alloy bars - you can pick some quite nice non branded ones pretty cheaply.

4. Fit spoked wheels rather than alloys. I was real lucky here as I was given (for free!!) an abandoned project that had brand new akront alloy wheels. I bet they cost a pretty penny but are a lot lighter (and it's unsprung weight too). And they looked lovely.

5. fit an alloy swing arm. I picked up one at a bike jumble that only needed a bit of filing to fit. Possibly a Kawasaki but as I'm not a Kwacker officianado that's only a guess. Again unsprung weight.

6. Chuck out the electric start and use the kickstart only. That thing's pretty damn heavy and this bike was a first time starter. (Not an option on a Katana as they took the kickstart off - shame). You can get away with a smaller battery as well now (I thought about going without a battery and running on a Boyer system I had kicking around but never got round to it).

7. Remove or replace the indicators with lighter ones.

8. Lower fork yoke is pretty heavy. I picked up an alloy one at a jumble - off another Suzuki but I'm not sure which one. A straight replacement with no mods.

9. Dump the airbox and fit pod filters - I'd only do it on VMs as I'm not convinced that CVs are suited to pods.

10. fit drilled discs - only a few grammes but it all helps. Could you run with a single disc up front? I did and never had any horrible moments. (The early bikes came with only a single anyway so I reckoned it was ok - cheaper on replacement pads too!)

11. Replace the front mudguard with a plastic one.

12. Braided brake hoses with alloy banjos- lighter and better than originals.

13. Take off the centre stand and just have it around for maintenance time.

I probably did a few other things but this was all over a period of a few years and it's dead simple and didn't cost a lot (although I was bloody lucky with the wheels). You can go mad and get titanium stuff and the likes but it's not in my mind good VFM. I wish now that I'd kept a record of weight changes between the original parts and how much I saved - it might not seem much individually but it all adds up.

Wally
 
Gs550e

Gs550e

Thanks for the thought, the main reason I was looking at the Wiseco kit was the cost (all inclusive, pistons, rings, gasket etc)compared to OE, and a little bit of extra performance as a bonus.
It looks as though o/size OE pistons and rings are still available, but fairly expensive.

Thanks for the tips
 
More on the GS550E

More on the GS550E

By the way, there's a picture of my bike in the gallery, its actually listed as a 500 (red one Darren Thorogood).
I took some weight off by using pod filters, plastic front guard, small alloy chain guard and plastic indicators.

One other thing, mine is the triple disc model, but the front brakes are useless, I put new pads on while ago but really didn't improve them much. I checked the master cylinder and calipers, all were ok, I even checked that the piston ratios were right. I haven't yet looked around for softer pad. Any thoughts would be appreciated on this one.

Thanks
Darren
 
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