Volvo RWD 120-130 Forum

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SU Guru needed. B20 Lean Stumble 120-130

What needles and spring do you have?

5W or ATF are the only 'correct' fluids. I've used WD40, others have used thicker oils, but both are band aids. Another tuning band aid is to add weight to the pistons such as lead sinkers.

If SU needles and springs fit, tell us the rest of your engines details, and we can tell you what needle and spring to use.






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New 1 SU Guru needed. B20 Lean Stumble [120-130]
posted by  TR Conn subscriber  on Tue Mar 6 01:19 CST 2018 >


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