Hey guys I want to raise the limiter on my b16a2. It's a 100% stock head and a built block. I was think of revving it to 8550rpm or something close. Is that safe? I have new oem bearings in the bottom end bwt.

 

There is no point to do so on a stock head. What exactly does a built block mean?

 

to the moon

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris Tune &raquo;</TD></TR><TR><TD CLASS="quote">to the moon </TD></TR></TABLE> lol, and your sig kicks *** by the way. Everytime I read that I laugh.

 

for peeps with good taste in humor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ***$nyper &raquo;</TD></TR><TR><TD CLASS="quote">There is no point to do so on a stock head. What exactly does a built block mean?</TD></TR></TABLE>
The point is for more speed out of each gear down the strip.

Sorry I didn't specify what I meant by built block.
-JE 81.5mm 9:1 pistons
-Scat rods
-Cometic HG
-Block guard
-ARP head and main studs
-New oem bearings, ITR oil pump, water pump


My overall question is what have you people on here revved to safely on a stock b16a2 head and oem bearings??

I'm retuning the car at higher boost and I want to rev it higher for more speed out of 4th when I use drag radials, because I don't want to hit 5th.

I originally posted this in the FI section, but it was moved to the All Motor section, and I expect that you guys have revved out your motors to their limits.

 

Why not upgrade your valvetrain esp when running high boost levels. Boost also has an effect on how quickly the valve can close. So your safe rev limit would be less than that of an NA car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Natural Aspirations &raquo;</TD></TR><TR><TD CLASS="quote">Why not upgrade your valvetrain esp when running high boost levels. Boost also has an effect on how quickly the valve can close. So your safe rev limit would be less than that of an NA car.</TD></TR></TABLE>
I realize that, but my question is what have people revved a stock b16 head to?

I don't have to rev higher, but it would be nice to get the extra speed.
And I don't have the money to build the head right now, but I definately had it planned in the future. Until then I want to hit 400whp on the stock head!

 

Your cheapest and safest bet would be to drop portflow inner springs inside your stock springs and you should be fine.

We can't tell you if it will be safe or not because you could be running and old B16a head with who knows how many miles, that's just waiting to drop a valve. Even if your head is in good shape you don't want to risk floating your valves which will cost you more money in machine work and downtime. As they say, do it right and do it once or risk it and pay more for doing it right anyway.