delusional.

hell, the srt-4 motor (2.4L, so can sort of relate) w/ no boost did 170 or so on the dyno years and years ago. and this is on a 8.0 motor, w/ less efficient, and far inferior stock parts (cams, head, tb, im) in comparison to an evo.

how they want the powerband will end up deciding hp is my guess as im sure its different to build a drag NA motor compared to a rally setup.

240's +/- 10hp is my guess

 

Ummm no need to call me delusional... I'm just taking a guess. Oh well this is why I don't post outside the Ralliart section.

 

I'd go the oposite way, destroked 2.1, individual throttle bodies, nasty cams, and rev the **** out of it (10,500 - 11,000). Run 15-16:1 compression, E100 and find MBT. I think you could get some decent numbers out of a 4g63 built like that but N/A. Run an electric water pump, 0wt oil on a dry sump oiling system. Since you will be loosing the turbo I'd pay a lot of attention to the intake side of the head during porting to maximize benefits there and go for a high velocity exhaust port to maximize scavenging. And dont forget to knife-edge lighten the **** out of the crank!

With the lower power output and much lower torque I'd drop the big heavy x-fer case and use an Evo IV case to save weight and possibly reduce power loss through drivetrain.

Really though I think a 4b11 is a better engine to go N/A than a 4g63 is....

 

damn this is crazy.

 

This motor in the current state will not break 200whp. The motor we are thinking about if this seems reasonable will be more like what Dyezak is thinking. It wont be destroked or revved that high though. The header will be the key (like all NA builds) as will how we do the intake port and manifold.

Aaron

 

Not to mention the Cam is turbo spec, not N/A. I dont think itll break 200hp either.

Itll be very interesting to say the least.

 

We can and are going to change the centerline. Cam gears make that one pretty easy. LSA is going to be what it is but we can tighten it up.

 

4g69 can put down 170whp with bolts on and a tune, I'll expect more from a 4g64 DOHC with high compression and big cams. Header is key, a four to one design perhaps. Any ideas on tune? Their are some high HP NA 4G63 maps floating around...

 

Im in for results. Definitely interesting...

 

I've already street tuned the car and will put it on the dyno to finish the tune. I dont use "maps floating around" since what I do is tune cars If a 69 with bolt ons does 170whp (I am assuming stock cam?) this should be similar. I am going to try to get it on tonight between race car prep and then we'll see.

 

Yes, 170whp on stock cam. The reason I mention 'maps floating around' because this forum is mainly 99% boosted!

Can't wait to see the results.

 

Even if it makes 200+hp, how do you intend to cope with the weight?

 

If it makes 170-180whp with 10:1 compression and a stock intake manifold with a modified stock header a bigger motor with the right parts in a light Evo might contend. For the record, Open Light is not the class I would choose but I test what customers want to do to see how viable the idea is.

I cant see an E98 16:1 NA 2.4L making more than 275whp with a Mitsu cylinder head. If the weight was low enough, we have made 314 through a 34mm so it might be a good setup for regional level racing in a light car.

 

Haha awesome in for results!

 

do rules dictate that you can use viable valve timing?
A mivec head would add a tonne of torque and improve the power band