Intake/exhaust cams

[Adam3482P]

Ok I was looking at these From Mazdamotorsports.com but only found a few mentions of them here. Are they not as good as they seem because if just the intake camshaft adds 12 horses then both together has got to do something.


FS9P-12-440 C CAM, EXHAUST 1 PROTEGE 1.8 & 2.0 DOHC 1999-02 $136.90

Notes: Higher performace cam from Japanese market MP3. Additional horsepower numbers not yet known. Use in conjuction with FS9H-12-420 intake cam which adds approximately 12hp. NOT SMOG LEGAL. This cam is modified from an intake cam, and therefore does not have a drive gear to drive a distributor. So.. This won't work on earlier 2.0 liter engines (626's) with a distributor.


FSH9-12-420 C CAMSHAFT, INTAKE none 626, PROTEGE 2.0 FS, 1.8 FS 1998-01, 1999-01 $167.10

Notes: Used in place of stock intake cam, this intake cam from the Japanese Sport 20 will add 12 hp to your FS engine. Not smog legal.

 

[mazdamp3_18]

ive got a deposit down on the cams they should be here in 3 weeks.... YEAY

 

[CharlieP5]

These will add horsepower but, not that much!

They make it seem like these two cams will add 24 horsepower but thats not the case. They can increase anywhere from 5-7 horsepower.

 

[mazdamp3_18]

i think they will add in the 5-15 hp range... HOPEFULLY

 

[eeterp]

they won't make an enormous gain but, the cams + intake + headers + cat back will.

The intake cam will yield more hp than exhaust cam but, both will help you realize more potential hp if you add the things I stated above.

 

[DooMer_MP3]

Over on protegeclub.com, somebody has added the intake & exhaust cams, AEM intake, modified some of the piping between the primary and 2nd cat (supposedly it does all kinds of horrible pipe diameter switching) and threw it on the dyno. I don't think he got much more than 12hp at the crank. The people operating the dyno said that the engine was running way too rich.

It seems like adding the intake, header exhaust and both cams will be good, but only if you have some kind of engine management going.

Is it me or does this car just have one bottleneck after another!?

Chris

 

[mikesmazda155]

If you were going to go with FI would these cams be the way to go, or are they noy made for the FI.

 

[melicha8]

A conservative cam setting on our cars is what is good for a Turbo. The FS-ZE cams aren't. Those are for a NA route

 

[APEXistud]

The FS-ZE cams will still be fine with boost. It's not like they're extremely high lift cams. So if you get them and you plan on boosting you're Protege, don't lose any sleep. As for the cams, intake, exhaust. You really shouldn't expect a big increase. The only way you're going to get a big gain is if you can tune the cams via cam gears. I don't care what anyone says, drop in cams will not run optimal without tuning them. You might be lucky to see 3-5hp with both cams alone. 5-15hp is a very large range to work with, but 15 would be the extreme and you'd be hard pressed to get that much with I/H/E and cams combined. Just my .02cents I've rarely witness those kind of gains in person on any honda. Great thing is that our cams are dirt cheap

 

[Zeus]

I agree with Stud, the J-spec cams will be fine on a FI engine. Not so much because of the low lift, but because there is no overlap of the intake and exhaust. FI motors hate lobe overlap.

NA motors respond well to overlap though, but the stock ECU would be a limiting factor. With adjustable pulleys you might be able dial in some lap on the J-spec cams, which will help keep the camber cooler and allow for a fresher charge. But this would only help if you could provide the ignition advance necessary to take advantage of the greater resistance to detonation. The J-specs cams at normal timing also probably provide a slight increase in resistance to detonation, and could benefit from some additional advance. I think the bottom line is that the J-spec cams are as aggressive as the stock ECU can handle, and only a slight gain can be realized.

I know Ive said it before but Ill say it again anyway If you want to get serious with a FS or FZ motor that is NA, plan on an ECU replacement and custom ground cams.

 

[freekwonder]

so if we got the j-spec cams, we could advance the timing in the higher end pretty good right? i have a friend that customs burns ECUs for desiel and natrual gas generators (not the small one either, the pistons in these things are the size of our cars) hes got everything in his basement to do this. If i know how far we could advance the timing i could get him to custom burn a an ECU for me.