SRIS questions for GT550 build

For those wanting to keep their bike the way the factory made them.

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jabcb
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SRIS questions for GT550 build

Post by jabcb »

Questions are for the 1972 GT550 cafe build.

The crankcase has the early-style press fit SRIS fittings. Any tip on how to install them?

A pic of how Suzuki originally routed the SRIS lines on the underside of the crankcase would be useful.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

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FullMoon
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Re: SRIS questions for GT550 build

Post by FullMoon »

Here's a pic from my '74 GT380. Not sure if the GT550 is the same or not.

Mitch


https://goo.gl/photos/YnVDs1cjtuAbvtJ86" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
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jabcb
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Re: SRIS questions for GT550 build

Post by jabcb »

Thanks. I think the GT550 routing will be a bit different because of the starter motor.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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jabcb
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Re: SRIS questions for GT550 build

Post by jabcb »

Found a GT550 build topic with a useful pic. viewtopic.php?t=5351&start=15
Image

Any tips on how to install the early-style press fit SRIS fittings?
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
GTandcbr
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Re: SRIS questions for GT550 build

Post by GTandcbr »

Hi
I have a 550 J but it has the screw in SRIS valves and i have no experience of the push fit ones.
However there is a Suzuki bulletin GT18 which has some info and diagrams that may help.
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rngdng
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Re: SRIS questions for GT550 build

Post by rngdng »

SRIS was an unnecessary experiment which really didn't do very much. I take them out.
If you stroke it more than twice; you're playing with it.

Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
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jabcb
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Re: SRIS questions for GT550 build

Post by jabcb »

Later GT380s didn’t have SRIS. Suzuki used bolts + washers to replace the crankcase SRIS fittings. So I got rid of the SRIS on the GT380 cafe build.

But my early GT550 has press-fit SRIS fittings so I can’t use the bolts. So I’m going to keep SRIS.

Perhaps a plus for SRIS might be that if the oiling is a little uneven with a cylinder not getting as much as the other, the SRIS might act to even it out a bit.

My current thought is that I should put the SRIS fittings in the freeze for a while.
Might also be advisable to put them in first in case I break one & have to replace it.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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tz375
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Re: SRIS questions for GT550 build

Post by tz375 »

I seem to recall that they are a taper fit, so it should be possible to clean teh hole, smear on a little loctite and ring them in - or give them a light tap.

On the only 72 GT550 I have worked on, we drilled and tapped the holes and plugged them - the same way we plug GT750 SRIS holes. If you go that way, don't forget to plug the barrels too..
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Re: SRIS questions for GT550 build

Post by rngdng »

The ones on my cylinders were press-fit. A tap and set screw with lock-tite fixed that.....
If you stroke it more than twice; you're playing with it.

Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
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jabcb
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Re: SRIS questions for GT550 build

Post by jabcb »

How time flies, or more accurately how slow we work on our builds. A year ago I asked about the SRIS and am now ready to install the lines.

Any suggestions on how to install the little clips that secure the SRIS lines?
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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