I am looking at keeping the stock 2.0L and doing a full race turbo kit with the 3076 turbo and I would like to be able to rev it to say 8500 on a road course without having any problems. I know I will need to build up the motor some but what is needed to do this?

 

Safely and repeatedly......I personally would do the ARP rod bolts and change out the springs/retainers in the head. Others may disagee but this is what I would do.

 

Safely and repeatedly: you will need balanced crank, aftermarket pistons and rods, aftermarket headgasket and ARP head studs, valve springs, and retainers.
Oh, and a good tune...

 

I am looking at doing the Buschur built motor and the stage 3 head with the revolver cams.

 

Not really, considering the 4g63 has close to same rodstroke ratio as a b16 you can rev to 8500 with no problem. All you may need is arp rod bolts, springs, and retainers. Some people take their motor to 8000 as it is while stock so 500 extra wont require all that you just stated especially since the 2.0l motor has a great rodstroke ratio

 

Slightly > does the evo continue to make power past redline say up to 8k or does it just drop?

 

with a tune it can make power up there....ive seen dynos on a Evo with mods, and 280cams and it made power all the way to 8200rpm

 

ok, but I mean stock...

 

Stock turbo! No! It's running out of stream around 7000rpm

 

i dont think your tranny with like that high of rpms

 

Agreed, except for the headgasket. You may also want to think about removing your balance shafts.

l8r)

 

here is some more info in here.

https://www.evolutionm.net/forums/sh...d.php?t=196544

with good springs you can bring it up to 8500 max on a stock block anything past that good luck with your rebuild. Build a good block get a stage 3 ported head with a solid tune with bigger then stock turbo and you can rev it to 9200k all day.

 

All day, until the rings collapse, until the oil pump is thrashed, or until the pistons seize - whichever comes first.

 

The ultimate determining factor isn't so much the rod/stroke ratio, but the piston speed. A piston speed of 25 m/s is recognized as being about the limit for a properly prepared street driven engine that is expected to deliver reasonable longevity. The 2.0L hits 25 m/s around 8500 rpm. A 2.3L stroker reaches the same piston speed around 7500 rpm. One can rev the engine higher if the power band warrants it (e.g. big turbo), but he should expect a shorter interval between rebuilds. Fortunately, most setups that give decent street performance reach optimum shift points at or before those figures.

 

Ya 8500 will be fine, I just want the RPM for when I road race and I will only run it that hard if I am in a turn or have the car loaded up and cant really shift. I will not run it this high everyday and if I have to rebuild it in 50k who cares I will have something else I can drive.