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which fuel after swap?

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Old 07-18-05, 08:52 AM
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which fuel after swap?
Hi Folks.

I'm going to replace a s5 TII with a s4 TII engine. Since the s5 needs higher octane fuel - which fuel do I need after the swap? Because I use only the s4 short block which has lower compression with the other s5 components (the ECU still needs to think its a s5 engine).

Harry
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Old 07-18-05, 09:56 AM
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I always recommend "premium" in TIIs, but the manual says you can run regular old 87 octane. I would still say to run a higher octane fuel.
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Old 07-18-05, 01:09 PM
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id run premium fuel allways, 1 good knock can blow a motor, so id do it to be extra safe anyway!
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