600 whp stock block K20a2

Shaun41178(2) · Post by **Shaun41178(2)** » Thu Nov 22, 2007 11:16 pm

Not bad I guess. Its no 383 sbc fiero but whatever

http://www.honda-tech.com/zerothread/2157090

AkursedX · Post by **AkursedX** » Fri Nov 23, 2007 12:53 am

Holy turbo-lag batman!

Awesome numbers though. :thumbleft:

Aaron · Post by **Aaron** » Fri Nov 23, 2007 10:37 am

It's like a Supra. Supras are coool.

S8n · Post by **S8n** » Fri Nov 23, 2007 6:21 pm

Wow. That would suck so bad to drive on the street....Unfortunately, most Supras are dyno-queens these days.

crzyone · Post by **crzyone** » Fri Nov 23, 2007 7:02 pm

It would probably act like a normal 4 cylinder car on the street until you put your foot down. Thats the beauty of turbochargers.

If it has really wild cams it might not be very streetable though...

Aaron · Post by **Aaron** » Fri Nov 23, 2007 7:23 pm

crzyone wrote:It would probably act like a normal 4 cylinder car on the street until you put your foot down. Thats the beauty of turbochargers.

If it has really wild cams it might not be very streetable though...

A normal 4 cylinder, Honda S2000 style. Turbochargers still lag, and especially on a 8000+ RPM motor. Although turboes don't affect low end all that much (The LS1s lose around 20-30wtq before spool), they do lose torque. And while on a 300+ tq LS1 it isn't such a big deal, especially when you'll have 550hp in a few hundred RPM, losing 20-30wtq on a 100tq 8000rpm engine is quite a blow. Now of course it won't be that severe, I'd expect ~10wtq, it's still noticeable, especially on a car already plagued by the lack of torque.

That engine would suck on the street. It doesn't outperform a stock 3.4 DOHC until 5,000rpm. And at 4,000, it's barely making about half the wtq of a stock 3.4 DOHC at the same RPM. In a 1,000lb go cart? Fucking awesome. In a ~3,000lb car? I'd rather a 5.7 TPI.

Shaun41178(2) · Post by **Shaun41178(2)** » Sat Nov 24, 2007 1:00 am

S8n wrote:Wow. That would suck so bad to drive on the street....Unfortunately, most Supras are dyno-queens these days.

Would act just like normal on the street. Would drive just like normal on the street.

Thats like putting a turbo on a bone stock 2.8 and then saying that it must be horrible to drive on the street because of the lag. I mean come on.

It takes 2 seconds to go from 3k to 5k rpm.

In a car with really short gears, being a little lower on tq then a stock motor is not a big deal.

And its not so much the power, its the fact that its a bone stock motor!!!!!

crzyone · Post by **crzyone** » Sat Nov 24, 2007 11:36 am

Thats amazing that its making that kind of power on stock internals, especially sleves. Must be one hell of a tuner.

The drivability of that car is subjective. On a 1/4 mile track you will spool the turbo before launch. On the road you will drop a few gears and race from a roll, minimal lag. The car is definitly not an auto x car with a powerband like that, maybe a road course where you can keep the rpm high.

It will get around just fine when its not in boost, might be a little gutless but it won't be that bad.

I bet that car won't get traction until 3rd gear, maybe 4th

S8n · Post by **S8n** » Sat Nov 24, 2007 2:07 pm

Shaun41178(2) wrote:
S8n wrote:Wow. That would suck so bad to drive on the street....Unfortunately, most Supras are dyno-queens these days.
Would act just like normal on the street. Would drive just like normal on the street.

Thats like putting a turbo on a bone stock 2.8 and then saying that it must be horrible to drive on the street because of the lag. I mean come on.

It takes 2 seconds to go from 3k to 5k rpm.

In a car with really short gears, being a little lower on tq then a stock motor is not a big deal.

And its not so much the power, its the fact that its a bone stock motor!!!!!

Exactly, it would act just like normal till 5k rpm. It would mean all that work doesn't do shit till you rev the piss out of it. And that graph is at WOT, boost would be non-existant for another 1-2k rpm at part throttle. And when you are driving at WOT, your passenger can go and grab a cup of coffee while waiting for boost. When the boost does kick in, you smoke the shit out of the front tires. That car shows what not to do when sizing your turbo to your engine. Looks good on a dyno though. Oh, and i'd be surprised if that motor would survive on the street, since a Dynojet doesn't put the same type of load on a car as real driving.

Shaun41178(2) · Post by **Shaun41178(2)** » Sat Nov 24, 2007 4:55 pm

There is no load when you are spinning the tires.

Lag isn't a big deal. Its simple to overcome. You downshift. Thats what I do. Haven't had a big problem with lag on my setup.

crzyone · Post by **crzyone** » Sat Nov 24, 2007 8:29 pm

Its hard to know how it will drive until you see it on the road.

You could use a small shot of nitrous to get the turbo spooling. There are a lot of options if you want better low rpm power.

You can use a misfiring system to keep the turbo spooled between shifts.

The car could be tuned beyond what you see on the dyno.

The Dark Side of Will · Tue Nov 27, 2007 7:17 am

What's all the fuss about? It's a small engine/big turbo power curve. If you set a Gen III/IV V8 up with a turbo sized relatively the same way (and it was built to rev to 8+), you'd get the same curve, just with bigger numbers.

I actually think that's a very smooth curve for such a strung out engine. Supra curves usually look worse (150 HP at 4000 RPM, 550 HP at 5000 RPM).

And I'm with Shaun... the fact that it's a stock 2.0 long block is crazy.
Has anyone played with the K24 out of a CRV yet?

Series8217 · Post by **Series8217** » Tue Nov 27, 2007 7:39 pm

Maybe I should turbocharge my parents' Element while they're not looking...