njaremka

I recieved some info from WebCams.com on the JSpec cams. They are almost exactly the same profile! take a look:

Stock US
Valve lift .341/.323, Duration @.050 198°/200°
Japanese version
Valve lift .344/.323, Duration @.050 210°/200°


the web site is:
http://www.webcaminc.com/

the information above is not on thier website, i had to request it. they provide custom grinds for your cams for $525. that includes hard welding and regrinding to your specs.


from the above, i can understand why the JSpec cams only provide about 10-12 hp. you can get more from cams, but you will have to go more on the lift and duration, as well as change the overlap.

jmauld

I'm assuming that they were using the
intake/exhaust designation.

If so, then this is a decent increase. If you can get the intake cam for less then $200 you'll see a nice increase in top end power with this cam. What it does show is that the J-Spec exhaust cam would be a waste of cash.

Nice info by the way!

Jason

njaremka

the stock exhaust cam on the JSpec engine is the same, but the MazdaSpeed replacement exhaust cam is different, and they did not have any information on that.

JustMe

I was told that this kind of increase doest give really anything

Inimical_01ES

So, pick up the jspec intake cam, but not the exhaust one?

Eric F

Yes, The FS-ZE intake cam will give a much better increase for the money than the MazdaSpeed exhaust cam will.

Inimical_01ES

Eric,

I've been checking around, and I think I'm gonna go ahead and order the following parts.. could you tell me what else I may need, or what parts might be a waste of time/money?

Tri-Point Short Shifter (Tri Point directly $139 Already ordered and shipped)
J-Spec Intake Cam (Corksport $168)
MS Exh. Cam (Corksport $142 if I'm getting the Intake Cam installed, why not just do both at once?)
MS High Comp. Piston Set ($120 Corksport Which is better for a NA engine? the J-Spec Piston set or the MS one?)
Tri Point 7lb. Flywheel ($389, SR Motorsports sells one for $409 that's 9lbs, what's the weight on the one from MS?)
Indigo Underdrive Pulley ($199 srmotorsports.com)
Tri Point also offers a clutch kit for $325 that I've been considering.

Well? What do you think? I know I'll need gaskets and what not for the cam/piston job (which I'll do all at once). What else should I get or need? Also, would I need any sort of electronics or guages?

Sorry for all the Q's, I just want to have all the correct info before I go and order all these parts, I mean.. money isn't a problem here, I just don't like wasting it.

THANKS!!!

zeus

I'm still tring to find out what the profiles are for the Mazdaspeed cam shafts. I'm sure they are more agressive than J-spec, and wish SR Motorsports would cough up the info. Based on the above profiles, I wouldn't bother with the ones from Cork, at least not if there something better out there. If the MS cams are worth it, I'll couple them with adjustable timing pulleys, and then play with the ECU programming to advance the ignition. IMHO that would be good for now, until somebody puts out a header.

As for the piston set and other items you mention, I always wait till the motor blows to replace pistons. Then I bore and maybe add a stroker crank, do head work and what ever else all at once. Also, there will be more parts options by the time the motor goes out. Besides if all you want to do is up compression, just pull and deck the head about 2mm. CC the heads and do the math though and make sure what you cut gets you to the right CR. If you do decide to go into the motor to do pistons, don't stop there. Ballance the whole thing, and flow bench your heads with big valces. I mean if you're going to get wet, you might as well swim a few laps.

The same goes for the clutch, wait till you kill the OEM unit, that probably won't take too long either if it's like mine. The underdrive will help the motor rev better but if you run a big enough power amp you may have problems. I prefer the to keep the same size pulleys and go lite weight instead, like an all AL pulley set.

Just my 2 cents worth.

Check out SR Motorsports, and rag them about the MS cam profiles while you're at it.

http://www.shaneracing.com/protege.htm

Eric F

That sounds like a pretty good plan so far. To my knowledge, the Mazda FP/FS engine seems to respond the best to higher compression pistons, headers, and the FS-ZE intake cam. Those mods will provide the largest HP gains.
The FS-ZE intake cam and FS-ZE (10.5:1) or MazdaSpeed (10.7:1) high compression pistons are both excellent mods that will give a noticeable power increase. The cost of the parts is very reasonable, the problem for most people would be installation. That would increase the cost of those mods considerably for anyone not able to do the work themselves. MazdaSpeed headers are also available, and the installation wouldn't be as difficult for many people as the pistons, or even the intake cam, but the part cost is rather high at over $700.
The MazdaSpeed exhaust cam is debatable. The cost isn't very high, and if installed with the FS-ZE intake cam the labor doesn't add much, but the gains will likely be very small also. I believe this cam and the MazdaSpeed higher compression pistons and MazdaSpeed lightweight flywheel were developed and installed on a special edition JDM Sport 20. I'm pretty certain these mods only gained about 5 more HP. The MazdaSpeed chromoly flywheel weighs 15lbs, the same as the stock '99-'00 1.8L FP flywheel, and 3lbs less than the stock '01+ 2.0L FS flywheel. Not a big difference for the cost and installation labor.
An upgraded clutch would be nice if you plan to do most of the above motor mods and possibly more in the future. If you plan to go with the lightweight flywheel, get the clutch and install them at the same time.
Another great mod for handling and traction would be the Quaife limited slip differential available exclusively through Mazda Motorsports. It isn't cheap at over $1200, but would make a great improvement in the handling and traction areas. I'm seriously looking at this one.
I have the B&M short shifter and it shortens the lever height and shift throw which makes for a sportier look and feel. The B&M shifter also replaces the stock bushings with its own built in pivot, which feels more precise. Well worth the cost to me.
The under drive pulley gives a small gain for the money. Be sure it has the necessary equipment to work with the DIS ignition. Not really worth it to me considering the potential problems. Get adjustable cam gears instead if you can find them.
One of the biggest difficulties in tuning the Mazda FS engine currently is the lack of R&D done on the engine so far. Especially in the ECU area. Sport Compact Car has a new MP3 project car now, and they are in touch with several companies that make parts of the Speedvision Touring car series Proteges. Hopefully we'll get some good information from them.

Just to clarify, there is an intake cam available from the JDM FS-ZE engine. It is not a MazdaSpeed part. The exhaust cam from that engine is the same profile as the US exhaust cam. There is also a special edition exhaust cam available from the FS-ZE engine, which is a MazdaSpeed part. It is not the same profile as the US exhaust cam.