Again, your supporting my sound logic: Its better to race a Yugo than a all-motor evo!

i'm sure a K&N filter would yield about 10% gains acrost the power band on a Yugo, further improving the power/weight delta between the platforms.

 

Are the fuel rules open? If they are have you guys considered running an oxygenated fuel like Nitro? You usually get 2.5-3x more power running a 95% Nitro mix over 100% alcohol. So you could attempt to run a 15-20% nitro mix sort of like those radio control nitro cars. I bet that would be good for a decent power bump and might put you over 300hp N/A.

 

The only real way to get a all motor evo in the 200's would be likie 14:1 on e98, maybe more compression even sense you cant even spray. That and a company named RPW makes custom cams for mitsubishis, there the only company to make cams for the n/a sohc 4g64 so they can probably whip up a nice set of cams for a n/a dohc 4g64. Also get rid of the 3" exhuast go 2.5", long tube header. theres also a few other tricks to bump n/a hp..

 

And rev the sh*t out of it. The easiest way to make hp on a small displacement motor.

 

NA AWD FTL!!! It robs so much HP, you have to work as twice as hard to reach your target goals. I seen more linear NA 4G64 DOHC graphs before. This one member on 3G made on 150whp on a Mustang Dyno with DOHC swap & Evo IM, I/H/E, and GSC very first batch of the 264 intake cam...

 

Due to the limited flow of the Evo heads tho (compared to something like the superior flow of a Honda head) revving the crap out of it wouldn't really have much benefit tho, right?

 

Flow is flow though, right? Whether it be a 2.4L at 7000 rpm or a 2.0L at 9000 rpm, the heads will need to flow to make power, so they will have to do quite a bit of work to improve flow if needed.

 

If it was my build I would do 16.5:1 with light weight h beams and a lighten crank, also for the head I would say go +1mm in/ex valves and a port but realy the 2 main things with N/A is cam(s) and compression with rev fallowing. Remember your not gonna make **** for power compaired to a turbo build so certain things wont be needed like I beam rods, a crank that can handle 1000+whp, lighter crank and rods are more important.

Only thing is Im not sure how 16.5:1 will be for long races. My dad has a 66 chevelle with a 327 and 16.5:1 comp and overheating is a slight problem on the street.

 

I was seriously considering doing the same thing for Open Light, but figured I'd need to go back to an Evo IV to be competitive with the GC8 chassis imprezas to make it worthwile.

Interested to see how the car does out on the stages!

Dave

 

That is such a scary sight. To me the only thing that was more scary was a V8 swap evo.

Just curious to see if anyone knows off hand. what is the NA record for the 4G. I know the 4g is terrible NA, well at least in my opinion.

Very different build none the less.

 

Overlap the cams till the piston just touches valves.

 

Well this car wont be on stage anytime soon. Its hard to tell if we can justify building an Open Light Evo, so for the time being the project is shelved. Everything everyone has listed will make a difference, heck just playing with the cams on this motor (not the real deal) should pick up power and smooth the powerband.

To be competitive (at least as I see it) the car would have to have a pretty good power to weight ratio. The lightest I can forsee a rally legal evo being is 2650 or so without driver/co driver without some creative lightening. So assuming we could build 265whp that would be 10:1 but it would still lack the torque of an Open car. I think that this would be a pretty intense engine program in comparison to our turbo program which has already made good power and torque.

The next phase of that (Open not open light) is to test it on my car and see how it does with MIVEC.

Aaron

 

I'd love to see pics of where you can get a rally ready Evo to weigh anywhere near that, creative lightening or not! Even if being overly generous on the weight N/A saves you over a turbo (~50 ish lbs for turbo, IC piping, & IC?)...but I thought most of the crop of newer cars had trouble even meeting Rally America's 2900 lbs weight minimum.

Dave
"owner of 3050 lbs porker that needs to go on a diet"

 

dyno it so we can all know how much it makes all motor lol

 

baby jesus cried when he saw that graph......