RPM questions

[s13240sxdrifter]

alright, so i've looked and looked, and i cant find the stock redline for the CA. i was also wondering how much abuse the stock valvetrain can take, as far as RPMs. i'm going to build a hybrid CA and am going to have the bottom end build to withstand 12grand worth of rev's. yeah, i know, it's a little drastic but i want to be safe. i only want the redline around 9500 or 10grand. anywho, any input would help.

[pulsar gtr]

Well the peak power on a stock CA is 6800rpm, red line is at 7000rpm. I hope taht is the answer you are looking for.

PULSAR GTR

[Notchbackca]

I think the stock rev limiter is 7700

[pulsar gtr]

oK, I got you, i believe you are right about the rev limiter 7700 rpm.

PULSAR GTR

[ca18detsilvia]

wierd, i've taken my CA up to 8500, i've got the 9k tack. it said it went up to 8700 but the stock tacks are alittle off, but my super afc said 8500 and as far as i know i have a stock ECU cuz i still have the speed cut and all that, but on the dyno my power starts goin downhill after 6k haha, no power up high, but w/ my new HKS cams i hope to change that alittle

[s13240sxdrifter]

well, actually, what i'm really wondering is how much the stock valve-train can actually take. what kind of aftermarket items i'll need to buy to run around 10,000rpm. that's more so what i'm looking for.

[r34 gtr]

for 10 grand you will have to replace it all, but the factory stuff is good to a bit over 8k before you should really worry. ive had mine to 9k before and its still alive.

- tim

[boost_boy]

Before you start screaming 10k rpm, you may want to take into consideration what happens to an engine at high rpms. For one, it squeezes the oil clean out of the bearings and will do damage if your oil pump can't keep up with the demand.

The stock CA18DET valvetrain floats at or around 8700rpm, but will ocassionally let you tap 9k rpm. If you have a crappy T25, then doing that is worthless. If you got a bigger turbo, it aids in keeping the engine and bigger turbo in it's sweet spot between shifts. The stock valve train will serve most of you guys' needs around here, but I need more. I plan on setting my limiter at 9500rpm to help me spool the 60-1 and never let it sleep between shifts.

Dee