Higgspeed expansion chamber install

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Repeater
Around the block
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Joined: Mon May 27, 2013 5:17 pm
Country: USA
Suzuki 2-Strokes: 1974 T500 & 2007 GXS-R 600

Higgspeed expansion chamber install

Post by Repeater »

Hey fellas,

I am putting my T500 back together. I installed one of the little header connections with the exhaust seal. I was torquing to 34Nm and the flanges on the outside started to bend before it hit the 34nm? To tight? What's the suggested value to use?
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jabcb
Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
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Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: Higgspeed expansion chamber install

Post by jabcb »

34 NM, or 25 ft-lb, is too much for nearly everything on a T500.
Specification-3 list the general torque specs: http://www.ozebook.com/compendium/techb ... %201-5.pdf

Use new exhaust gaskets. A use a 1/4" flex-head ratchet to make sure I don't over tighten bolts like that. (Amateur mechanic here)
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
sportston
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Suzuki 2-Strokes: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S

Re: Higgspeed expansion chamber install

Post by sportston »

My Higgies bend easily too. It’s the way Alan made them. They are lightweight pipes, including the flanges. I found, if you don’t tighten until they bend, they either leak or the nuts come loose. He should have made the flanges out of thicker steel IMO.
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