S4 vs. S5 Rotor Housings.

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May 9, 2004 | 08:03 PM

Beep777

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From: Minnesota

S4 vs. S5 Rotor Housings.

Can anybody tell me how to tell the difference between the series rotor housings when looking at? And are they interchangeable?

May 9, 2004 | 08:42 PM

Turbonut

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I know one way. The S4 spark plug holes (L to T) are 2" center to center. The S5 are futher apart, but don't have the distance handy.

May 9, 2004 | 08:55 PM

Beep777

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From: Minnesota

Eyeballing, everything looked the same. I will get out my tape measure.

Any other ways?

May 10, 2004 | 08:08 AM

Beep777

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May 10, 2004 | 11:50 AM

RotaryResurrection

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IF it has a threaded hole above the T plug, it is s5. If not, it is s4.

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