Grenading a B18

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How fast can you spin a stock B18 before the thing chunks? Is a 75 shot relatively safe? I don't want to be breaking shit. help me out.
 

Havok

Senior Member
Well, no matter how long you spray it, it will always hurt the engine. Build up your internals and a 75 shot will be safe...Talk to wildbillhtachbac for more info, who I beleive has a ZEX system in his 5th gen hb.
 
A GSR motor is what i intend to use.

A friend told me that the motors that come with vtec heads are built to withstand the rigors of high RPM usage. He says that you have to put money in the head (valve springs and such) to support high rpms. I want to port the head and eventually put in bigger than stock cams. The desktop dyno predicts my engine will make power until 8500rpms. Is this pushing it? what will i have to do to support this? if i cant use nitrous till i build a motor, then i guess that'll have to wait.
 
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