GT550A top end woes
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- Alan H
- Moto GP
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- Joined: Thu Feb 16, 2012 11:50 am
- Country: England
- Suzuki 2-Strokes: 4 x GT550s - J, M, A, B.
- Location: The Republic of South Yorkshire
Re: GT550A top end woes
Yes. I'll have a word. The guy wants a couple of 550 exhaust pipes of mine.
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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Re: GT550A top end woes
Thank you Alan .
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Re: GT550A top end woes
Eve all ,150 miles done and so far running best since i bought her.starts 1st kick everytime .staying below 4500 revs but did take up to 6 in 3rd and 4th for a few secs Sun .really enjoying the ride .
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Re: GT550A top end woes
By way Alan ,my master cyl is GT750 thought you meant upgrade to something like you have done.Not that im chasing you but any news on your pipe swap with the fella who has your old Piper system ? Another 40 miles done today .cheers bob.
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Re: GT550A top end woes
Hi Alan ,well not used 550 since last Sun.today fired up then middle pot died.wont fire .have changed all plugs .no go .maybe coil .annoying when they break sitting still ! Easy way to check coil ?
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- Yeah Man, the Interstate
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- Suzuki 2-Strokes: several gt250 ramairs
Re: GT550A top end woes
easy way to check a coil? ohms on a multi meter. orange to white should be around 4.1 ohms. but that's disconnected, so may be different if connected. try it, you aren't going to hurt anything. btw, did you leave the fuel switched on? i know they are vacuum taps, but they can leak. good luck
cheers, dd.
p.s. while you're at it, check the orange and the white wire connections as well, you never know.
cheers, dd.
p.s. while you're at it, check the orange and the white wire connections as well, you never know.
GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.
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- Suzuki 2-Strokes: GT550A 1976
Re: GT550A top end woes
No off switch on my tap only on,reserve or prime .i try to check coils Mon .ta for info dollydog !
- Alan H
- Moto GP
- Posts: 3176
- Joined: Thu Feb 16, 2012 11:50 am
- Country: England
- Suzuki 2-Strokes: 4 x GT550s - J, M, A, B.
- Location: The Republic of South Yorkshire
Re: GT550A top end woes
Spoke to him Saturday, and he's 'thinking about it'. I'll let you know of any developments.
That's why I've got in line taps on mine as well!!
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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Re: GT550A top end woes
Thank you for update Alan .just off to pick up more plugs and borrow a multi tester.
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Re: GT550A top end woes
Middle plug was very weak .new one in .back on 3 .off fer a ride .yay .i have new spare at all times in tool bag .
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Re: GT550A top end woes
A good 40 mile bimble about all good until half mile from home she got louder on right pipe.yep lower baffle half way out ! Screw still there but piece of metal come away from inner pipe .temp repair after a good wash with a washer .seems to be holding well.never ends !
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Re: GT550A top end woes
Morn all.anyone use Suzi two ? UK supplier .i have bought side panel retaining knobs this week.they have aporox 650 x GT550 parts in stock.all tiny bits but very useful.mostly o/e but some pattern parts.well worth a look.
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Re: GT550A top end woes
Eve Alan ,been out today on 550 as dry at last .however it poured and got a real soaking once 20 miles from home .on way home after pub lunch with mates she was hunting around at lower revs but once up to sppeed 35/40 + mph smoothed out .my mate said needs a good run and some revs as she is four stroking ? Im not familiar with this .im busy Thur but fri im planning on getting some longer miles in.any thoughts ?
- Alan H
- Moto GP
- Posts: 3176
- Joined: Thu Feb 16, 2012 11:50 am
- Country: England
- Suzuki 2-Strokes: 4 x GT550s - J, M, A, B.
- Location: The Republic of South Yorkshire
Re: GT550A top end woes
Usually a 2 stroke runs better when it's cooler as the air is more dense so the carbs seem to work better as the mixture is slightly leaner. Maybe your bottom end (well, the bike's anyway!) is a bit rich anyway but getting moisture in the intake or on the plug caps will make it a bit lumpy. Giving it a good run and some revs will do it good. What plugs do you have in? I usually run NGK B8ES in mine when they're run in and non resistor plug caps if you're on points.
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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- To the on ramp
- Posts: 346
- Joined: Sun Mar 07, 2021 2:32 pm
- Country: United Kingdom
- Suzuki 2-Strokes: GT550A 1976
Re: GT550A top end woes
Eve Alan ,im on Neutronic and B8ES plugs .Fri planning on much longer ride and using some revs.just spent last 2 hours cleaning all todays rain muck off after forecast said dry all day .typical.my mate is almost finished recommisioning his Kwak H2 stroker after 6 years in storage so hoping we can get out together if not i go on my own .need to make most of dry roads to get some decent mileage in.