my friend jsut got a ecu with 9000 redline. is it safe to take it up to that RPM once in a while??? he has a gs-r b18c1 motor. with about 77k miles on it. but he rebuilt the head aroun 60k. so is it safe for him to take it up there once in a while???

 

anybody??

 

did he upgrade the valvetrain?? if he did then he should be able to rev it that high with no problem

 

no he did not. he is planning on though.

 

well then stock valve train won't be able to handle 9k rpm and it's not safe. he should upgrade it first

 

the reason i was wondering is because my other friend takes his gs-r up to that most of the time. he only does it when he races. and his car is still running fine. he hasnt upgraded or anything. his car just has a lot of black smoke coming out when he hits vtec.

 

uhhh when he shifts or when he hits vtec

 

Why would he shift at 9K when he races? GSR cams don't make power up that high, and he's on a stock valvetrain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Moogen Powah &raquo;</TD></TR><TR><TD CLASS="quote">Why would he shift at 9K when he races? GSR cams don't make power up that high, and he's on a stock valvetrain.</TD></TR></TABLE>

yea theirs no point, u don't make power that high....

 

so it is not safe right. people say it okay to do it once in a while. but if you guys beg to differ then i guess ill go with you guys

 

so the car would fall flat on its face once it reaches that RPM???
like no power what so ever???? doesnt vtec help a little though???

 

stock gsr valvetrain is supposedly good up to 9k rpm, but that doesn't mean he's making power there. it could even slow him down.