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General discussion about Street two-stroke Suzuki motorcycles.

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Admin
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Post by Admin »

TitanRider wrote:The same thing happened to mine once. It turned out that the little pin that keeps the slide straight had backed out and allowed the slide to rotate in the carb. This made it so the idle screw was keeping the slide from going all the way down because the slide has a notch for the idle screw and it needs to be all lined up. Luckily for me the pin was still there, so I just pushed it back in and peened in.
this happened to me on the freeway going about 80mph, closing in on traffic, quite an experience!
So you just peened it from the outside of the carb body?
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Re: some TT500 SAIAD pictures...

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tjark63 wrote:I am very interested, since I am restoring one of these quite rare TT500's. Could you get me a copy of this magazine?
here it is, from "Motociclismo", October 1974:

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Post by Admin »

Yep. I held the carb lightly in the vise with rags and tapped the edge of the hole with a pointed tip punch to hold in the pin. I was nervous I might crack the carb body, but everything went OK. I think a dab of epoxy would probably do the same thing.
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Post by Admin »

Well why not?, time for an update:

So this arrived in the mail today; an air intake for a stinger. Both the ones I have are ripped & are of course unobtainable from new, but some chap had gone to the trouble of having them reproduced & I saved the link from an old Ebay advert.

I've also bought 2 rodkits for a DS80 that arrived last week, although I still need wider big end pins, but with 3 cranks I might press them apart to find 2 goodies. Or there are some in UK that are 17mm but wider & can be ground down. But they were a bit pricey.

Also obtained is some size up rims so I can fit wider tyres than std. Purists will scoff but I don't care for running dreadful ribbed original 2.5" front tyre & if I go the next rim size I can get 2.75" front & 3" rear tyres that will still look std to all but the Anoraks & allow modern tyres. In addition one of the rims came with a twin leading shoe brake off a Honda or something which was modified to fit an early suzuki. What a score! Again not strictly original but will look period & give a fighting chance of stopping when asked.

Had a couple of false starts with front guards, but I have something to bodge on until I find the correct guard look I am after (the US ones were slightly different to ours & funkier I think). Wouldn't mind a headlight chrome strip or seat strip but that can all come.

Oh what joy & I haven't had to lay a spanner on it for months, not that I've had the time.

Next step is to strip the frame (+ odds like stands) back for painting so I can make a rolling chassis (on some old wheels) then build new wheels & start on the engine & cosmetics.

. . . . but next step in my list is to stop work on racebikes & start again on the 500 (Trinity RZ 496 twin in Yamagama) which has been idle & needs finishing.

Next exciting T125 instalment, ohh, late this year I suspect.
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Post by Admin »

Thanks triplerocky...now can you translate! :)
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Re: some TT500 SAIAD pictures...

Post by Admin »

Triplerocky wrote:
tjark63 wrote:I am very interested, since I am restoring one of these quite rare TT500's. Could you get me a copy of this magazine?
here it is, from "Motociclismo", October 1974:
Thanks a lot, very interesting!
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Post by Admin »

CJF wrote:Thanks triplerocky...now can you translate! :)
... good chance to learn a little italian :grin: :grin:

If really/really interested I could try a traslation (BTW no responsability allowed :roll: )
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Post by Admin »

H2RICK wrote:Well, F5, from your pics I have to say that's pretty much the rustiest Suzi I have ever seen.....and I've seen quite a few rusty ones in my time.
I agree....some owners are idiots....parking the poor thing under a tree. :(
On the upside though, I suppose he could have driven it into a pond instead...... :grin:
Hopefully the needed bits from Rusty will eventually save the resto bike.
Keep us up to speed as you go along, please.
Not as long as some have.............
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Post by Admin »

Sorry for my ignorance on this, but what was the story with the TT500s? Factory racers?
Looks like stock Titan forks with the GT750 4LS laced up there?

I found this so far:
http://www.kapaza.be/Motoren/Oldtimers/ ... Italy.html
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Post by Admin »

evol wrote:Sorry for my ignorance on this, but what was the story with the TT500s? Factory racers?
Looks like stock Titan forks with the GT750 4LS laced up there?
I found this so far:
http://www.kapaza.be/Motoren/Oldtimers/ ... Italy.html
Evol, TT500 was a little more of what you've found.
Mainly it was a modified T500 by italian importer, SAIAD at the time, 3 modified levels, "TT500", "TT Junior", "TT Corsa", each of them had different aestetich, porting (Corsa had the Daytona cylinders", brakes (Menani), chambers, suspensions, ecc.; in increasing order toward better performances, "Corsa" raced in European Juniores Championship and other continental race.
What Suzuki neglected, SAIAD made it.
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i love these things

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'71 T250 - Nasty pictures

Post by Admin »

Hello, I'm new to the board and new to Suzuki's. I have a few RD's. RZ's and an H1, and done a couple of straight forward rebuilds/restorations before but I'm hoping to get a little insight into my current project.

The pictures show the inside of the crankcases of a '71 Suzuki T250. The oil is gearbox oil. The bike had stood for many years, some of them outside in the elements judging from the state of the chrome. The motor wasn't seized, in fact the bores and pistons were in pretty good shape. The guy I got the bike from had it sitting around several years, he'd been given it as a non runner and knew nothing about it's history.

I'm guessing a leaking crank seal is to blame. However, I'd have thought the gearbox oil would enter from the engines right (clutch) side, but the right side cavity is the clean, albeit oily one. The left side is filthy dirty with caked, burnt oil. Also, it seems there is only a trace of joint sealer between the top and bottom halfs.

I think this would indicate that the centre crank seals have also failed? I've never seen one like this before, so any opinions or information would be much appreciated. The latest plan is to order new seals and bearings for the crank.

I've spent many hours searching around for parts but so far have only bought some stuff from Paul Miller. My local Suzuki dealer is Useless, one of those combined car-bike dealers who pretty much just wants to sell new machinery. I've also found Suzuki Simon and CMSNL who have a little bit T250 stuff for sale, as well as Crooks and Spares Direct in the UK. Is it worth trying to find another dealer "locally"? or is it better to deal with one of the specilists for parts?

As you can see from the last picture I have my work cut out for me, but so far the frame has been powder coated, the tank, side covers have been stripped, fixed and are waiting for paint, the pipes have been repaired and are getting replated now, but I still have to locate some shiney bits (fenders, handlebars, etc.) and the rubber parts.

Sean


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Post by Admin »

Well the bikes got potential for sure and it will look great again once its restored. As youve found out, going to your average local dealer is mostly a waste of time given the age of the bike.
Unless you are in 'really close' with a really good dealer/owner, they usually wont even bother with finding out what parts are still available for your bike. However theres plenty of places who have parts and plenty people on here who can point you in the direction of getting those ultra rare items.
As for the left cylinder lower end and case thats been gunked up it appears the oil was leaking into the left cylinder through the left centre bearing oil seal.
On these engines the centre crank bearing is fed by a seperate independent oil source, notice the entry hole with the recess to the steel shell in the lower case.
If the seal fails on either side of the centre bearing, the oil will enter the lower cylinder on that side and create the effect you have.
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welcome

Post by Admin »

Welcome and thanks for the pictures. We enjoy seeing the rebirth of a old bike and anytime you need help there are lots of folks here with tons of useful advice. Please keep the pics comeing as you progress. Doifn
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GT500

Post by Admin »

Took the refurbed bike out today for its maiden voyage. Seemed to run ok for the first 10miles or so but I did notice some surging forwards and backwards on the overun. Then the offside cylinder cut out and it would only run on the left pot. This then cleared up after the bike cut out. It then run ok for a couple of miles then kicked in again. Appeared to be intermittent problem. Swapped plugs over and also ht leads, no difference.
Got the impression that the right hand pot was maybe being starved of fuel for some reason. Sounds carb related to me, anybody got any ideas.
Cheers
Dave

:(
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