who on here has stroked there evo 8 motor? if so was it worth it? and did you upgrade to 2.2l or 2.3l?

 

bump for a answer as im seeking the same answer

 

hehe thanks ya i have always had plans to strok the 4g63 but i never hear anyone talkin about it....

 

You may want to check out the EVO Orgy article in Sport Compact a few months back. The Toda car had a stroked motor and they commented on it performance. I think it was running like mid 11's.

 

hmm i think i might have that mag... if i find it i will post what they said.

 

Ummm only if you don't have a Girl

It really depends if it is worth it to you. If you are going to keep the stock turbo you might as well not do it because other mods for the money will gain more performance and take lesss time to install.

 

i think it will give the evo 8 motor a better base to build from so i prolly will do it.

 

It will offset some of the lag from a big aftermarket turbo, no such thing as enough torque right?

 

what do u mean offset?

 

yeah it is good if you want to offset turbo lag. Someone here is planning to do a 2.5 to make a GT35 spool like butta.

 

with a bigger displacement there would be less lag given by the turbo and it will give out more burnt gas to spin the exhaust side of the turbo.

 

I'm in the process of building a 2.3 stroker. The parts are at the machinist. hopefully the whole build will be done in the next month or so. The cost difference between a stroker build up and a build up using a stock crank is minimal. Basically the difference is the cost of the crank which runs ~$750 for the forged "Mighty Max" 4G64 part. The rest of the parts used are pretty much standard forged internals that I'd be paying for even if I stuck with the 4G63 crank. Having said all that,I'm not so sure I'd spend the money to build a stroker unless i was already planning to build the bottom end.

FWIW I'll be running a GT35R using a Full Race header. I think I'll be pretty happy if I see at least 300ft-lbs of torque by 3500 rpm. I'll post pictures and dyno sheets as I get the work done.

 

I'm actually in the process of doing the same thing.. I actually made the attempt to offset grind a stock 4G63 crank with my machinist.. We're not too sure it would have worked out too well, the engine isn't together yet anyway... I actually have a 2.4l engine also at the machine shop that I am considering using its block instead (taller deck) everything I'm doing at the moment is on indefinite hold, so I don't have any good info on which is better.

Here's the issue, if you want to rev the engine pretty high, you probably wouldn't want to stroke the engine, however you would want to increase the bore as large as reasonably possible (which isn't much on the Evo) This will increase power and torque, without limiting RPM potential (WITHIN REASON, there's always compromises)

If you increase Stroke, you multiply the stresses on the engine since you've increased the size of the "Lever" which is what increases torque, things like blueprinting become even more critical on a stroker since the additional stresses will exploit any flaw...

So, the typical stroker kit increases the bore and stroke slightly to give you 2.3L

Ok, now, where does this lead to? Well, your driving style and where you want your power to be.. On a street car, a smaller turbo with a stroker kit, will be a blast to drive. The advantage of the stroker is you can run a slightly larger turbo than stock, and still have stock like spool, but also the area under the curve is improved since your already producing more torque even off boost, so drivability is improved regardless of turbo choice.

For the GT35r guys, you now have sufficient exhaust volume to spool that big turbo a little faster, also, the additional torque off-boost is improved, also helping drivability a huge amount. The big issue is that you've also now limited your max RPM somewhat.

Everything is a bunch of compromises, and there's really no right answer..

For me, the answer I like best is Stock-Ish turbo with enough volume to provide stable boost to 8000rpm (7800rpm in reality) and plenty of torque, I intend to gain top-end performance by using a different final drive but at the expense of acceleration, however the additional torque of the stroker engine, should offset altered gearing somewhat...

That is.. if I get to finish anything I'm working on in the near future..

 

i have a 2.3l stroker from magnus and a gt35r so far so good no complains

 

HOw does it feels driving it?