Skunk 2 stage 2 cams with full valvetrain?

3544 Views 15 Replies 11 Participants Last post by Skyline4life, Sep 7, 2007

kt411gcn

Discussion Starter · Sep 4, 2007

Im currently running a DC Race Header, Pulleys, Apexi WS2 exhaust, and an Injen CAI. I've been thinking for a while whether I should stay NA, or go FI via turbo or supercharging. I've decided to stay NA.

Anyways, I did quite a bit of searching, but I still have some questions. Along with the mods I already have, im planning on putting in a set of skunk 2 cams, valves, springs, and retainers. Im also planning on shipping out the ecu to Hondata for a reflash while the car is sitting in the shop, getting the stuff installed. The cam gears will wait, since there is no tuning software out for the SI's yet. What I was thinking was that I'd gain some power with those mods, and the Kpro should be coming out soon, and then my car will be all ready to get tuned.

But my question is, will my car be safe to run with all those mods and no tuning? How much in gains should I see? Finally, what's a rough estimate of the cost of the reflash and the cams and valvetrain, including labor? I usually install parts myself but I wouldn't want to mess with the head.

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NA06Si

· #2 · Sep 4, 2007

No one is going to be able to answer your questions honestly. There is not a tuning option available right now (Hondata does not offer a reflash for after market cam shafts) so there is no way to know what type of gains you would see OR if it would even run safely. I would just hold off, save your money and wait for K-Pro.

asdf0123

· #3 · Sep 4, 2007

Notes:

Nitrous has not been tested. As ignition timing has not been changed, nitrous is as safe to run with this reflash as with a stock ECU.

Aftermarket cams have not been tested.

Race header / Test pipe. This will eventually give you an engine check light telling you that you have a faulty catalytic converter. We have not seen this error cause any power loss. Race headers are for offroad use only.

For consistency in dyno testing we suggest you follow the dyno procedure outlined here.

--------------
those are notes from hondata. if you want further reading... http://hondata.com/reflash_06_civicsi.html

james

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nbilyue

· #4 · Sep 4, 2007

also, you don't need to run aftermarket cam gears in our cars. Unless you plan on building a race car they shouldn't be used. I would suggest waiting for a tuning solution.

si_civic

· #5 · Sep 4, 2007

Cam gears? Our Si's have VTC which dynamically change the camshaft's degree, no ? Correct me if I'm wrong !

I am considering this route as well .

8yourv8

· #6 · Sep 4, 2007

if you do use a cam gear, you only need to run the exhaust cam gear on the k series from what ive read up on so far. i plan on doing the skunk2 head package once a ems comes out already have the stage 2 cams and what not.

confusedxpanda

· #7 · Sep 4, 2007

8yourv8 said:
if you do use a cam gear, you only need to run the exhaust cam gear on the k series from what ive read up on so far. i plan on doing the skunk2 head package once a ems comes out already have the stage 2 cams and what not.

are the cams install and what not? How are they treating you?

8yourv8

· #8 · Sep 4, 2007

confusedxpanda said:
are the cams install and what not? How are they treating you?

no there not in yet. im going to just wait to put them in until there is a EMS to tune them with, other wise i think its pretty pointless to install them to just see minimal gains

confusedxpanda

· #9 · Sep 4, 2007 (Edited)

well i dont thinkt here will be a Kpro version from hondata for our cars. Didn't Doug from Hondata say they had no intentions of making one and that these internet rumors were funny? Iono i hope they come out with our version though

edit: found it?
http://www.8thcivic.com/forums/showthread.php?t=46760&highlight=kpro

Skunk2TS

· #10 · Sep 5, 2007

We will have some cam tests posted very shortly (next 2 weeks or so) to show what a set of Skunk stage 1's can do with just a reflash. Doug @ Hondata seems to think that the reflash should work ok with a stage 1 type cam. We will post up A/F ratios as well.

In regards to the effect of cam gears...as it was stated earlier, because of the factory VTC, there is no need to run and adjustable intake gear. But even on a set of type r cams on a K20A2, an adjustable exhaust gear picked up 5hp and 3 ft/lbs of torque in the low and mid-range. Im curious to see what playing with the exhaust gear could do on the stock K20Z motors.

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confusedxpanda

· #11 · Sep 5, 2007

Skunk2TS said:
We will have some cam tests posted very shortly (next 2 weeks or so) to show what a set of Skunk stage 1's can do with just a reflash. Doug @ Hondata seems to think that the reflash should work ok with a stage 1 type cam. We will post up A/F ratios as well.

In regards to the effect of cam gears...as it was stated earlier, because of the factory VTC, there is no need to run and adjustable intake gear. But even on a set of type r cams on a K20A2, an adjustable exhaust gear picked up 5hp and 3 ft/lbs of torque in the low and mid-range. Im curious to see what playing with the exhaust gear could do on the stock K20Z motors.

I don't quite understnad the graph. Can anyone explain?

gibbletz

· #12 · Sep 5, 2007

Imagine a rollercoaster, the higher the better.

Skunk2TS

· #13 · Sep 5, 2007

With an adjustable exhaust cam gear installed and set at -2 marks (4 crank degrees) the motor gained 5 hp and 3 ft/lbs of torque throughout the low and mid range (dotted line).

Hope that helps :smile:

GreySi07

· #14 · Sep 5, 2007

Damn Skunk2 is on the forum!:thumb:

kt411gcn

Discussion Starter · #15 · Sep 7, 2007

Awesome. Can't wait for the graphs for the stage 1 cams.

Skyline4life

· #16 · Sep 7, 2007

I can't stand this ****! ima make my own EMS >:{ and make billions!

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