Hi guys
I just finish my K24a2 build in JDM DC5 Body.

The set up details are

1. K24a2 longblock
2. Type R (DC5) Camshaft
3. wiseco 12.5:1
4. 6 speed tranny (DC5)
5. AEM Serie 2
7. 850 c.c. Injector
8. DC5 oil pump
9. Custom Header 4-2-1 2.5 exhaust pipe.
10.DC5 Intake Manifold
11.K&N CAI
12.Hybrid Racing 70mm. TB

I have a few question about the result i got.

I got 241.72whp and 25.71kgf/m (252nm, 185.9 lbs/ft) using E85.

Is this the best i got out of this setup?
Wonder if anyone have the similar result from this setup


THANKS ^^

 

Here is the chart

 

Looks like vtec can be moved down.

If you want more power try an rbc manifold, bigger cams, and 3" exhaust.

 

Tune looks like it needs some work with MAX TORQUE = 25.71

 

put it in a lighter chassic :p

 

how is that going to make more power?

 

I thought using K20 cams on a K24, being the larger engine was a poor choice for the larger engine?

 

Is it the PRB manifold?

I would try the Excessive "pro 58mm" manifold, with something between 72mm and 80mm throttle body.

Also, remember that the header is extremely important, and experience is key when designing it.

Are you sure there is enough ignition advance pre-vtec? The torque curve looks like when detonation is a problem before vtec engages, and you therefor have to retard the ignition. But that should not be a problem with 12.5:1 pistons and E85.

Where are you from?

Also, I believe to have read something about on of the TSX cams being bigger than the type-s/r cam. Think it might have been the exhaust cam.

 

No bueno on that tune buddy

 

Thanks everyone for answering question. I'm live in central of Thailand (่Bangkok) Presently I lowering the vtec engagement to 4500rpm and I feel the car pull smoother and car move faster than stock vtec point.Next mission is to ignition advance pre-vtec as you mention. The result will be post here with dyno graph!

 

I wonder why torque number is the same as stock engine when compare to the same rpm.
For example the stock will do 166 lbft @4500 it is exactly the same number of my build at the same rpm. Is it weird?

 

does vtec really hit that hard

 

What do you mean?

The reason I lower the Vtec engangement point is too much different power at the stock point it's like the car instantly change its characteristic.Some may like but not me. :p I love the car that I can predict everystep it will move especially in corner, like you count from 1-10 you will know what is the next number. After lowering the Vtec, I will have more space under the graph.
That make my car move faster.

 

Forgot that this is an i-vtec engine.

How is you cam gear tuned? (VTC, how much advance at different rpms/loads?)

Also, why do you start the dyno at 3500rpm? These engines should pull hard and smooth all the way down low. Also detonation often happens at low rpm.

 

Actually I do not involve in tunning the car on dyno.

My tunner does it all. I plan to dyno it again soon.

About VTC I will check and post here soon. I wonder what will happen to the graph if it get proper Advance?
Thanks

 

you want to make sure you run the dc5 intake cam gear. The k24a2 cam gear is limited to 25vtc. For the most part VTC will like to be at full advance at peak torque & then retarded (on both low & high cam). On the low cam just before vtec (500rpm or so) I start advancing vtc so its at 50 when it hits the X-over

you may want to try the oem tsx (k24a2) exhaust cam as it is larger than the oem type-r & meant to expell gasses from 99mm stroke not 86mm.

If you want maximum torque run the RBB (k24a2) intake manifold. Power may begin to fall around 7000-7500rpm tho. Or run the RSP, RRC, or RBC intake manifold for more peak power. Proper intake length & a good velocity stack can help also. My friend gain 10 lb/ft everywhere on his 260whp k24 with a stepped 3.0" to 3.5" intake with BPi velocity stack