Cams Installed

[suttonschinook]

Finally after waiting for 3 weeks I found some time to put my FS-ZE cams in. I must say it went together without any problems. The engine idles same as before and there is no more hickup at about 4k. Everything seems so much smoother not to mention it does want to rev a little easier now. I am glad I did it. BTW I put about 100 miles on them today and no CEL! I wish there was a dyno around so I could see if there was any increase in hp and tq. Gauging on my butt dyno it feels like it pulls alot better from 5k to redline. :)

[03MzdSpdSTP]

SWEET!!!!!!!!!

[Go Mifune]

Great deal! Glad it went well for you.

[Street KingFD]

So give us the information on the upgraded cam, duration? What does the company say the power increase should have been. Is this a mild one or a wild one? Are there more than one to chose from?

[nmaino]

Great!!! This is the post that I have been waiting to hear. :D :D :D :D

[funnylittlman]

Originally posted by Street KingFD
So give us the information on the upgraded cam, duration? What does the company say the power increase should have been. Is this a mild one or a wild one? Are there more than one to chose from?

Yeah,

what he said :D

[ARunto]

There is a dyno here in Nashville...you should go dyno it :)

[Dexter]

nice, how much that shit cost you?

how do you install? (ill be honest, i have no idea about cams or any shit like that)

edit: a quick trip to howstuffworks.com helps me understand what they do now! but the question still stands, how was the install?

[suttonschinook]

For all of you who aren't familiar with these cams, they are JDM Mazda. They have the same lift as stock but the duration is longer. The stock duration is 198/200 @.050. They New cams have a duration of 210/200 @.050. I purchased the FS-ZE intake and Mazdaspeed exhaust cams from Corksport (http://www.corksport.com/main.php3?primNavIndex=0&mainURL=%2Fstore%2Findex.php3%3Fcat%3D220746). They say that the intake cam alone will add 10-12 in N/A. Most of the threads I've seen say this is not true. They say that it is about a 7-10 hp for both. I have no idea what gains are for FI. I don't have time to go and dyno it anytime soon so I'm sorry I can't give you exact gains. They are designed for N/A but I have had no problems at all so I guess they work for our cars too! Just to let you know I've put about 200 miles in them now. I hope this helps! :) Evan

BTW: Install was pretty easy because one of my friends helped me out. He's worked on cars for about 10 years now so it made things go alot smoother. All in all it took about 3 hours.:)

[ARunto]

did you buy some cam gears too? this would be best to get rid of the overlap

-Alan

[PA_MP3_Man]

Yeah I bet you would get a lot more horsepower out of them if you could get adjustable cam gears and get to a dyno for the day to calibrate them right.

[funnylittlman]

mmmmm that J-SPEC 2.0 FS-ZE intake manifold with the opening butterfly valve looks like it would do some good :D

[suttonschinook]

That's what I was thinking too!

[funnylittlman]

They did something similar to the Maxima's manifold. It's called a Middle Eastern Variable Intake (MEVI) and it has this butterfly valve. You have to use a harlen switch to activate it (above 5K) and people have noticed some nice gains (esp. those V2 S/C boys).

I wonder what they used to signal the valve to open

[suttonschinook]

Explain more about what they did to the manifold. What is it supposed to do? Thanks, Evan

[funnylittlman]

Originally posted by suttonschinook
Explain more about what they did to the manifold. What is it supposed to do? Thanks, Evan http://www.corksport.com/content/00/01/06/61/73/shop/products/images/480809.jpg

I think the stock Manifold is on the left and the JDM manifold is on the right. Do you see the valves on the intake side? At a certain RPM, these vavles open letting more air in, hence more power :D

All, feel free to correct me if I'm wrong... I can take criticism ;) .... SOMEWHAT :mad: :D

Maybe they have a gradual opening instead of just wide open, letting more air slowly as the RPM's rise... hm... that could work too.....

[yashooa]

Is the JDM intake a two piece intake?
The stock looks to have runners going to a plenum all in one casting.
Is there another part to the JDM that is not in the photo?
Does the throttle body change positions with the JDM?
It looks like it mounts straight out intstead of what looks to be an angle with the stock manifold.

Does that bad boeey do something magic to the intake?
Good power? Worthy of an install?
It looks to have close to the same size openings how do the blades help? Wouldnt they restrict flow at WOT?
In short splain Lucy splain.

[funnylittlman]

All I know is that butterfly valve infuses more air at a point in time when the RPM's are high enough... if you keep it open at the lower RPM's, it'll choke the engine, in essence... major HP loss.

In theory, it feels like a VTECH kicking in

[funnylittlman]

The rest.... (shurgs) dunno :D

[trekv2]

its like the GSR intake manafold with its 2 stage VTEC

[perfworks]

Originally posted by funnylittlman
http://www.corksport.com/content/00/01/06/61/73/shop/products/images/480809.jpg

I think the stock Manifold is on the left and the JDM manifold is on the right. Do you see the valves on the intake side? At a certain RPM, these vavles open letting more air in, hence more power :D

All, feel free to correct me if I'm wrong... I can take criticism ;) .... SOMEWHAT :mad: :D

Maybe they have a gradual opening instead of just wide open, letting more air slowly as the RPM's rise... hm... that could work too.....
the pic you have here is OF ONE MANIFOLD. it is just seperated.;)
the bottom plenum is on the left and the top piece is on the right. the throttle body is connected to the plenum on the left

[perfworks]

it is a dual stage manifold with a VICS (variable inertia charging system)
allows air velocity to increase at low engine speeds . for improved low end torque and cylinder filling . higher volumetric efficiency
the plates will open via ecu controlled solenoid at 4750 rpm. it gives you a slight kick for two reasons.
1. it is no longer restricting the airflow thru the runner and
2. you will most likely at half throttle and load go into open loop allowing an addintional 10 -20 % more fuel thru the injectors depending on load, throttle , air flow, and gear selection
hope that helps.:D

[nmaino]

Well, how are the cams working out? Do you feel any difference now that you have put some miles on the car?

[funnylittlman]

Originally posted by perfworks
it is a dual stage manifold with a VICS (variable inertia charging system)
allows air velocity to increase at low engine speeds . for improved low end torque and cylinder filling . higher volumetric efficiency
the plates will open via ecu controlled solenoid at 4750 rpm. it gives you a slight kick for two reasons.
1. it is no longer restricting the airflow thru the runner and
2. you will most likely at half throttle and load go into open loop allowing an addintional 10 -20 % more fuel thru the injectors depending on load, throttle , air flow, and gear selection
hope that helps.:D

That does make sense.... :D

[TURBO3WAGON]

Did I understand correctly? No more stumbling & hesitating with these cams????
If so I’ll be calling Derrick to order a set today!

(boobs)

[Traveler]

It's not just an increase in duration. The exhaust cam has more lift as well. I measure .020" on mine. My car is still normally aspirated and they were worth 7-8 HP as long as you have a better intake. The stock airbox sucks. Or fails to suck as the case may be. Bad design. I can't imagine that you FI MSP guys won't see a major power increase just changing over to a better flowing piece. I'm curious to see what will happen.