Have been reading up on the SRIS system fitted to the GT750.
Does it actually make any sort of difference, and if so, what does it do?
I seem to recall that some people have removed and plugged it up.
If it was any good, why wasn't it fitted to other models lol the T500.
I get these ideas in my head , and like to find out all I can.
Regards
Andrew Holley
SRIS , does it work
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A.Holley
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rngdng
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Re: SRIS , does it work
I don't know that it really matters. It is supposed to reduce smoking but I am one of those who has removed the system after having one of the SRIS valves come apart and get sucked up on top of the piston. It beat the sh!t out of the piston crown and combustion chamber. My bike doesn't smoke after it warms up.....
Lane
Lane
If you stroke it more than twice; you're playing with it.
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
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Alan H
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Re: SRIS , does it work
If you do a lot of town/steady running or short runs without opening the bike up, then SRIS is good for stopping some of the plumes of smoke out of the exhausts that must have gone a long way to the California government helping to bring about the demise of two strokes.
But if you use the bike regularly and ride it with some spirit, then except at startup or half a mile into a WOT run, then won't really smoke much at all if everything is correctly set up.
I've got it on both my GT550s and had it on my original one back in 1972 and think it's a good idea, but it's your choice.
Problems? Well my 550K right cylinder SRIS pipe came loose last year where it goes onto the stub near the carb so that the oil ran along the cases and eventually dripped on the floor making a mess. Carb off and refit OK. Other than that, it's as it was when Mr. bike builder on the production line intended.
But if you use the bike regularly and ride it with some spirit, then except at startup or half a mile into a WOT run, then won't really smoke much at all if everything is correctly set up.
I've got it on both my GT550s and had it on my original one back in 1972 and think it's a good idea, but it's your choice.
Problems? Well my 550K right cylinder SRIS pipe came loose last year where it goes onto the stub near the carb so that the oil ran along the cases and eventually dripped on the floor making a mess. Carb off and refit OK. Other than that, it's as it was when Mr. bike builder on the production line intended.
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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yeadon_m
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Re: SRIS , does it work
SRIS was deleted on the late model GT380s. My B model has the threaded holes in the crankcase with blanking bolts in, and the later cylinders on my motor do not have the brass inlet tubes cast in.
Retained throughout on 550 and 750 AFAIK.
I think its a bit of a pain, but I've kept it on the larger bikes.
Cheers,
Mike
Retained throughout on 550 and 750 AFAIK.
I think its a bit of a pain, but I've kept it on the larger bikes.
Cheers,
Mike
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A.Holley
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Re: SRIS , does it work
Thanks for the feedback.
As I do a lot of around town mileage nowadays, I was considering adapting the system to my T500, I can't see any reason why it would not work on a twin.
Use the drain plug on crankcase , fit one way valve, and then feed to outer transfer port on opposite cylinder. As piston descends on one piston, there is a partial vacuum (relatively speaking) on the other one, so oil should flow in one direction only.
Might be an interesting experiment, or am I just fighting a loosing battle , smoke wise.
Andrew
As I do a lot of around town mileage nowadays, I was considering adapting the system to my T500, I can't see any reason why it would not work on a twin.
Use the drain plug on crankcase , fit one way valve, and then feed to outer transfer port on opposite cylinder. As piston descends on one piston, there is a partial vacuum (relatively speaking) on the other one, so oil should flow in one direction only.
Might be an interesting experiment, or am I just fighting a loosing battle , smoke wise.
Andrew
