thats a nice intake manni. if iam not mistaken, this is the manifold was used on Curt's car which ran 10.4 @ 141mph
gl!

http://cbevo.com/2006_evo_ix_28.html

 

You are correct and I spoke with Curt about the manifold to get his perspective. From what I saw of the comparative dyno charts it will outflow the ported stocker on top with minimal deficiency down low. Based on intuition it will likely not outflow the Magnus at higher rpm. However, because I want to keep the usable rpm below 8K this seemed like the best option for my car.

 

Great choice for your desired powerband.

 

UPDATE:

I finished the cam swap today and it took about 8hrs with a buddy of my taking our time. I could probably do it in half the timing now that I have one under my belt. I purchased the EuroTool for changing the springs and it made it a piece of cake.

We set the car to TDC and I was able to change all the springs on cylinders 1 and 4 without compressed air. The valve only drops slightly before hitting the piston and there is plenty of room to remove/install the keepers.

After finishing 1 and 4 we installed the stock cams with no rockers and rotated the crank 180deg. This pulled pistons 2 and 4 to the top and we repeated the process. No fear of dropping a valve or losing a keeper.

Got the new GSC S2's installed, new valve springs and the adjustable exhaust cam gear. I do have some questions that perhaps someone can provide advice.

1) the mivec cam gear cover(w/ 14mm hex) is torqued to 24ft/lbs, but does it require any sealant?
2) is the crank angle sensor on the MIVEC cam symmetrical? I know the crank angle sensor on the exhaust is not and was installed with a certain orientation.
3) I got oil on the belt when I removed the mivec cam gear cover....with 70k miles is it bad just to change the timing belt and not the balance shaft belt?

Any help or advice is greatly appreciated.

 

The balance shaft belt is probably more likely to cause an engine failrue then the T-belt. Those little guys break and get drug into the T-belt all the time. I'd replace it with 50k miles on it, much less 70k.

 

100% agreed.

 

UPDATE:

I have some bad news for my setup. After the cam install I was able to get the car running and everything was good. I noticed the adjustable exhaust cam gear I purchased was retarded 4 deg, which was making the car run rough at idle. I put a wrench on the crank and moved the cam gear so I could ZERO it out. All went well until I started the car with the wrench remaining in the crank.

Long story short, crank bolt loosened and the crank timing belt gear backed off the key. I did a timing belt and balance shaft belt change and then did a compression check. Cylinder #3 now has 90psi so I think I bent a valve. I will do a leak down check on Saturday to verify the damage.

 

FoK Man! This is really too bad. It sounds eerily like something I would do. Sorry to hear about your plight though. Really. Ugh!

Don't feel so bad. I am so into micro adjusting the tension on the WGA of my evo and I once left the wrench on the backup nut on the actuator rod and every time that the WG opened it tore a hole right through my radiator core.

 

^
with the bad comes the good. I am removing the head this weekend and what I have found thus far is leaking from the exhaust valves.

I have been in contact with Curt Brown and I will be sending him the head for some TLC. I will take a picture this weekend to document what I find.

I want to thank Tom for offering killer deals on OEM parts...Tune with TSCOMPUSA Tom also gets incredible deals on almost any performance part for the EVO.

I also appreciate all of the advice from Aaron at English Racing and the killer timing belt tools from Jay Racing If you are doing a timing belt change these tools are awesome!

 

thanks for the kind words James . Curt brown does amazing work, should make a big difference.

 

^
Pulled the head today and I had dinged all of the exhaust valves, but only cylinder #3 wasn't sealing at the valves. I will package the head tomorrow ready for shipment to Curt on Monday.

 

Just to have some fun we should bet on how much hp I will make running 93 octane and the same 30psi with the new setup.

Baseline was ~425hp and I am adding Curt Brown head, Skunk 2, and GSC S2's so my guess is 509hp@wheels.

 

502hp good luck man

 

anything over 500 and ill say mission accomplished.

 

I have a spare head on the shelf waiting for shipment to Curt once I get back up to the States. BTW, he will port your cylinderhead for free in exchange for a Capybara, or a Tapir, which he sorely wants as a house pet! LOL

Good luck with your build, buddy! I am betting on 485-492WHP.