Raising the rev limiter on a stock S54

[erickhoyos]

I’ve done it once and never hit 8500 again out of fear, went back to 8k. Plus isn’t there oil deprivation when you go to higher rpm range?

[Lukem3]

Valve float is what you need to be careful of. When the valve opens and isnt able to close fast enough and kind of hangs open, which can cause valves to hit. If it was as easy as just a tune everyone would do it

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[heinzboehmer]

I think Hassan runs his with an 8500 rpm limiter. You could try reaching out to him

[Lukem3]

If you want to go higher rev and be safe, upgrade your valve train. Get higher rev springs, maybe even different cams and valves if you have the money

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[bigjae46]

I know most tunes raise the rev limiter to about 8200 rpms. Has anyone raised the limiter to 8500 rpms on a stock motor? Long term results?

My car is not street legal and will only see the track. I don't mind doing extra maintenance like more frequent valve adjustments and rod bearing replacements.