I am very curious about it, i want to make it more than 7250 but is it dangerous?

 

Whilst it isn't dangerous in the short term, in the long term you won't be doing your engine any good.

Above 7,300ish, the valve retainers can start to float, so uprated titanium retainers are a good idea.

If you want to be doubly sure that you can take your car to 7250+ on a regular basis, get stronger rod bolts fitted at the very least, and change out the hydraulic tappets for solid ones. You can have these fabricated at any good race shop. BBR in the UK have been taking their cars to 8,000rpm+ with these changes!

HTH,

Henry

 

Do you know if the 8000 rpm cars are running SC reduction pulleys? If so, what size and have there been issues related to exceeding the SC redline?

 

the cars are running 20% pulleys and yes, the superchargers do go pop time to time between races, but the head and bottom end appear to be pretty bombproff if the mods I have suggested are carried out

Cheers,

Henry

 

Minicoop78 has been and IS running 7500...floating prolly won't occur till 8+k

 

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75

 

........ ...........

 

::::::::::::impatient

 

The Cosworth kit I have has a 7300 rpm tune. The redline stays there even with the optional 2% oversize crank pulley. Track testing was done and it's been fine. The highest rpm available is 8500, and I know someone running that with a 19% and a lightweight crank pulley [not sure if oversized]. It's driven on the track, and the car has not had anything save the power steering fan croak.

 

who has the 8500 rpm software does anyone know?

 

MTH offers that option with there tuner file.. you have to ask for it when you tell them what mods you have on your car...

 

7500 (EVOtech + 15% etc.)