[sethbobbob]

does this work and is it ok on the motor

Originally Posted by antony_aiken

firstly hi everyone..........secondly......Originally posted by RickBusarow
It varies from one car to another. I, of course, believe you should, but not with stock parts. At least replace your internals. For right around $1k in parts you could have Ross pistons & rings with 9:1 compresssion, pushing Eagle rods. Bore it .020" over and knife edge the crank and you'll have a bottom end capable of spinning to 9000+ rpm and supporting more horsepower than you'll ever make (900?). Of course, you can't get that 9000 rpm without a 5 angle P&P head job, valves, cams, double springs, retainers... But that block will support anything you throw at it. I highly recommend it.

hmmm all that work to make it spool up to 9000rpm.......lol.........before turbo my standard 626 engine KL-ZE 2.5i V6 revved to 9000, well it hit the 9000 on the clock and then stopped going (the needle not the engine) needless to say it sounded sweet, but that is from a standard engine..........if you search for KL-ZE engine on google.com you will find mazda's own site about the "miller cycle engine stating that "although the KL series engines used in the probe and mx6GT's are rated to just 7400rpm, they will infact revv to 10,000 rpm, this is the mechanical redline of the engine. theoreticaly any higher speeds achieved from these engines would result in catastrofic con rod faliure.)

so you see, if you have a 92-97 kl-ze V6 car, take off the Lambda sensors, (exhaust sensors) and use a free flow exhaust and you too will see revvs of 9000+..........

how does this work? i hear you say..........well
the lambda sensors govern the amount of O2 (oxygen) in the eshaust system before and after the catalytic converter. if they detect a change in 02 levels they will adjust fuel pressure accordingly, if you remove the lamda sensors they will detect no trace of O2 and will boost fuel preasure up to maximium. also the computer will not know that this is the case and will "over ride" the rev limiter thus enabling the engine to free rev to 10,000 rpm, (in theory ive never actuakly got mine past 9400 even with turbo)

"so go forth and modify young child" and have fun doing it!