I think I hit my rev limiter 8400 set by cranehi6, got this weird sputtering. It slowly went away as I shifted into second. Could bouncing off the rev limiter be detrimental to the motor?

I hope the sputtering was from bouncing off the rev limiter. The only thing I changed today was I bolted up my 2.25" straight through muffler and took off my 2"chambered muffler.

 

Hmnn some say it's ok but others say it's bad.. The revlimiter is there for a reason... I know over 95% of Honda owners hit redline or revlimiter before shifting because that's where peak power is made on almost all honda motors. Some say when it bounces there's not enough fuel. I think it's bad for your engine but it won't kill it doing that. How ever mis shifts can kill it

 

ya

 

Sputtering was just the rev limitier.

I don't think its a good thing to hit the rev limiter alot, but once in a while should be just fine.

 

it stops fuel flow which could cause detonation if it is repeated to much in row not meaning like once a day but like staying on it for multiple seconds. sorry if that was confusing

 

No, the rev limiter cuts fire. not fuel. It is not recomended to stay on the limiter but it should not hurt it in accidental hits.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by neuspeed &raquo;</TD></TR><TR><TD CLASS="quote">Hmnn some say it's ok but others say it's bad.. The revlimiter is there for a reason... I know over 95% of Honda owners hit redline or revlimiter before shifting because that's where peak power is made on almost all honda motors. Some say when it bounces there's not enough fuel. I think it's bad for your engine but it won't kill it doing that. How ever mis shifts can kill it </TD></TR></TABLE>

No you shouldnt take it up to redline all the time and most honda's dont make peek power at redline. Usually its a few hundred rpms shy, unless your motor is tuned, then it all depends.

To the above post: "No it cuts fire, not fuel"

WTF

 

It's the point where you return on the powerband after the shift is that matters. If you do not take the car up as far it can go, it will not return to an area on the powerband where it will be making peak/good power.

I.E. If you shift before 7600-8K you most likely will drop, say to 5K rpm. However if you shift at 8200K you maximize the powerband and start off higher.

That's some food for thought.

 

true, but not all honda's make power all the way to redline......I guess it all depends on where the power band is depend if you build it for low-end or top-end

 

um it def. cuts fuel, and yea look at most dyno results the peak power isn't made at redline. It does help you in the bottom end of the next gear, but you actually lose power at redline. With my old d16 i would redline every gear before shifting, like day in and day out. that lasted like 20,000 miles, til a rod went through the block.

 

Yea it definetly cuts the fuel, which is like a stall. It won't hurt any if you do it, but don't be an *** with it.

 

As the other guys stated above I am pretty positive it only cuts the spark not the fuel. Think about it MSD makes ignitions with rev limiters built into them, and it controls the spark not the fuel!

 

The MSD boxes cut sprak only, because they are IGNITION boxes, they have no control over fuel.

All Mitsubishi rev limiters are fuel and spark, and every Honda rev limiter I have ever heard (B18A and B18C1) was spark AND fuel. You can tell VERY clearly if it is just spark, because the fuel will ignite in the exhaust and do cool stuff.

It's ok to hit it when there isn't any load on the car, but it's not so good to do it in gear. Even though it cuts fuel AND spark, it can still lean out because the fuel delivery is all whacked when the motor comes back online after a "bounce." Try to minimize it.

SCC lost a motor in their supercharged Si from going off the rev limiter on the road course.

You can also do bad things like skip timing, with the jerkyness when you hit the rev limiter.

Now, this sounds all bad and gross, but you'll be fine. I've gone off the rev limiter more times than I can count in my car, launching at the track and getting silly in the snow. It's fine, but it's just not something I do if I can avoid it.

 

It's the cranhi 6 (spark) I wasn't used to getting up that high that fast (post straight through muffler) Now that I adjusted the rev limter to 8600 it's fine. I also think the rpm from the crane is 200 rpm earlier than the factory tach.

Off topic, but after the rebuildm, I was running a stock muffler for 6000 or so. I bolted up the race muffler and wow what a difference in revs.