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Smallframe Polini exhaust spring length
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@sdjohn avatar
sdjohn
UTC
Johnny Two Tone
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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sdjohn
Johnny Two Tone
@sdjohn avatar
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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Posts: 9032
Location: San Diego, CA
UTC quote
Anyone know the proper length for this exhaust spring? Mine is too long (stretched) and I want to source a replacement.

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@brentscheffler avatar
brentscheffler
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'78, '80 P125X, '80 100 Sport, '74 150 Super
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brentscheffler
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@brentscheffler avatar
'78, '80 P125X, '80 100 Sport, '74 150 Super
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Location: Seattle
UTC quote
Re: Smallframe Polini exhaust spring length
sdjohn wrote:
Anyone know the proper length for this exhaust spring? Mine is too long (stretched) and I want to source a replacement.

External inline image provided by member with no explanatory text
I have one laying about in the garage, I'll take a measurement tonight after work and post my findings. Unless someone gets to it before me.
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@sdjohn avatar
sdjohn
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Johnny Two Tone
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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Location: San Diego, CA
 
sdjohn
Johnny Two Tone
@sdjohn avatar
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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Location: San Diego, CA
UTC quote
Stretched spring is 87 mm eye to eye and 2mm in length.
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@sdjohn avatar
sdjohn
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Johnny Two Tone
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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Posts: 9032
Location: San Diego, CA
 
sdjohn
Johnny Two Tone
@sdjohn avatar
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
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Location: San Diego, CA
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2mm diameter
@spiderwebb avatar
spiderwebb
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put spring into a vice and cut off a 1/2 inch
then bend cut side to be able to work correctly

done
@vader19 avatar
Vader19
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P,SUPER,V90, 50 Special
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Vader19
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P,SUPER,V90, 50 Special
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UTC quote
all the polini exhaust springs I have are 57mm end to end

SIP sell the polini springs in 55 (probably what I have.. I measured through the baggie) and 70mm. you probably need the 70 unless your spring is Totally stretched out
⚠️ Last edited by Vader19 on UTC; edited 1 time
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@sdjohn avatar
sdjohn
UTC
Johnny Two Tone
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
Joined: UTC
Posts: 9032
Location: San Diego, CA
 
sdjohn
Johnny Two Tone
@sdjohn avatar
'15 GTS300, '86 PX125EFL, '66 VBB, '01 ET4
Joined: UTC
Posts: 9032
Location: San Diego, CA
UTC quote
Nice, thanks y'all.
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