what block you using and what you reving to? ive been hearing roumor of d series bottom ends being able to hit 8krpm just fine w/o any problems. no spun berrings or anything

 

my rev limiter cuts me off at 7800 (zdyne 1 wire ecu with d16y8 program)

 

im wondering how high the stock bottom end can go before it destroys itself.

could be some possible high reving sohc non vtecs running arund in the future


[Modified by TorteX, 7:02 PM 11/4/2002]

 

All of the D16 bottom ends are very very similar. (excluding the Y8)

7800 is about the max you should go to before you really start risking it.

I'm using the Z6 as a bottom end, and the Y8 as the head. They both can handle the 7800 rpms pretty well stock. It's really not worth it trying to increase your rev limit on D16 motors, I've heard that once you surpass 7800 rpms, the injectors start firing at the wrong time - they can't keep up. (I read something like this off either HASports site, or Zdyne site, or maybe when I got my Zdyne ECU).

BTW: DO NOT buy Zdyne ECU's through HASport!!! They don't know what they are doing, and their customer service is HORRIBLE along with their return policy!

 

I've driven my mini-me up to the rev limit a few times. It pulls all the way and it feels like it can go more than the limit. I guess I need to have my ecu chipped, swapped, or go with Zdyne

 

You guys obviously realize that it's pointless to rev that high without a nice cam, right?


[Modified by Mr. S, 11:36 PM 11/7/2002]

 

The Y8 cam is aggressive enough to give decent power at 7800 rpms.. You just need an ecu that can keep up with the cam. The Z6 & Y8 ECU's are VEEERRRYYY conservative, they don't give nearly enough juice for the Y8 head. With the VAFC, you can give the motor enough reserves to easily meet the 7800 rpm limiter, maybe even more - but like I said, it's pointless to go that high.

 

coo coo thank you much. as long as your still making positive accelleration you might as well wind out that gear.