5 replies to this topic

[Billys Bits]

does anyone know what psi the Vmax scart bottom pulley gives using the standard eaton m45 pulley also what is the best psi to run the chargers at?

[Grahamxx]

does anyone know what psi the Vmax scart bottom pulley gives using the standard eaton m45 pulley also what is the best psi to run the chargers at?

8-10 psi..

[Verbaliser]

It depends what engine the vmax kit is being bolted to, and what cam your using. If it's a standard 1275, then it's likely to be around the 8psi mark.

[Verbaliser]

Sorry forgot to say, vmax will machine a bottom pulley to your requirements, but this is generally to make is smaller to reduce the boost

[Grahamxx]

Sorry forgot to say, vmax will machine a bottom pulley to your requirements, but this is generally to make is smaller to reduce the boost

The supercharger pulley is the normal one to reduce, to either 15%, 17% & 19%. Depending on head work will effect boost pressure more. I'm running on our classic a Jonspeed crank pulley with a standard supercharger pulley and Swift tune cam for supercharged engines...

[Verbaliser]

I am a risk-averse tuner so reduced the boost for my set up!