What is the maximum SAFE shiftpoint on a b18b with all stock internals?

 

you answered your own question via the thread title... stock

 

well, let me rephrase this. My g35 has a 6500 rpm redline, but is reflashed to a 7500 redline because they are proven to make power RELIABLY and SAFELY till 7500 (non rev-up) in stock form. SO, i know this is not a g35, it is an ls integra, but can they safely go higher than the 6800 rpm redline safely or not?

I am making a basemap for a boosted ls that is on stock valvetrain, and if he can shift at 7200rpm safely, then id rather him get the extra 400 rpms in each gear for boost purposes. Remember, keyword is safely. redline may be at 6800, but fuel cut/rev limit is higher than that, and this is the reason i asked. if honda thought that 6800 rpm was the max safe limt, that would have also been their rev limit as well.

 

many people think it is ok to rev non vtec motors to the moon and it is not. a good reason not to is because ls and b20's (i think) have smaller and weaker rod bolts than b series vtec motors. This is the same reason why rod bolts become priority when trying to make a non vtec motor vtec. My answer to you would be to not really go about 7k and also if the motor is bone stock you are deff not making power anyway.

 

Unless you upgrade the rod bolts, you run the risk of stretching the rods and having a catastrophic failure. This is common in LS/VTEC setups wherein people over-rev their setups since the head can handle the extra rpms, but the bottom end cannot. Unless you get better rod bolts, stick to the stock redline or slightly higher. You aren't going to make more power by revving higher though...the LS head flows like crap. With an LS/VTEC you should make more power in the higher revs...that would be the only time i could see you effectively raising the redline with some kind of gains...

 

The redline on the tach is 6800. However, the rev limiter is at 7200. So, I say just leave it alone. I take mine up to 7000 occasionally, and I've even bounced off the rev limiter a couple times and my 98 LS still holds compression like she just rolled off the factory floor.

With that said, I've read that it is safe up to 7500. But I have no experience with that so don't take my word for it. For reliability sake, again, I say leave the rev limiter alone if you're doing nothing with the internals.