Intake cam installed...

[Gen1GT]

As you all know, I was installing my extra exhaust cam, as an intake cam, since it has longer lift and duration. I got the timing off on the first try, and it was crazy loud, but pretty weak on power throughout the rev range. I re-timed the cams straight up, and now it runs great. It's significantly down on torque, and not much happens til 4500, where it opens right up and screams. It seems to be still building power at fuel-cut, so it looks like I'm going to have to play with cam timing to bring the powercurve down a bit. No big deal, I wanted to get camgears anyways.

It sounds awesome(even better than before) now too. Throatier as it revs, and lots of pops and burbbles as you let off the gas. If it dynos well, and I get it tuned for more power, I think I'll regrind it for even more lift and duration, and see how that goes. I'm going to dyno it as soon as I get my cam gears, then we'll play with cam timing.

 

[p5sundevil]

sweet man keep us updated, cam info is always important as it is an area with alot of potential for us.

did u just have your exhaust cam re-pinned or was it a straight swap.

 

[Gen1GT]

sweet man keep us updated, cam info is always important as it is an area with alot of potential for us.

did u just have your exhaust cam re-pinned or was it a straight swap.

Straight swap. If I get it reground, Mike323(a guy with a BP 323 who does custom grinding), is going to repin it. It turns out the Protege gears only have two indexes, not three like the Miatas. So I guess I could try it on the I index(it's on the E index now), but it took a lot of messing around to get it right to begin with, so I think I'm going to wait for cam gears. When I get them and put it on the dyno, I'm going to play with ignition timing again(if VE is up at all, I may need less timing), and play with my Airflow Meter door tension to see if added fuel helps any too.

 

[Gen1GT]

Well, I installed my Ultra TR cam gears today(well, the other one, I installed the first one on Monday). I have at 6 advanced on the intake, and 2 retarded on the exhaust. Power is awesome above 4 grand, but I'm gonna need to close up the overlap some to bring the powerband back.

I'm tuning the gears on the dyno on Thursday, but I just wanted to update everyone for now. With my cam, and playing with the timing, I'm hoping to get 5-7whp. I'll update everyone again on Thursday.

How do you like unassuming engine bay?....all go, no show baby. The gear cover will be going back on after the dyno tuning....

 

[scorch70]

Well, I installed my Ultra TR cam gears today(well, the other one, I installed the first one on Monday). I have at 6 advanced on the intake, and 2 retarded on the exhaust. Power is awesome above 4 grand, but I'm gonna need to close up the overlap some to bring the powerband back.

I'm tuning the gears on the dyno on Thursday, but I just wanted to update everyone for now. With my cam, and playing with the timing, I'm hoping to get 5-7whp. I'll update everyone again on Thursday.

How do you like unassuming engine bay?....all go, no show baby. The gear cover will be going back on after the dyno tuning....

Speaking of the engine bay, when are you getting a header? You could really use it - gain 8-10 hp the easy way.


scorch70

 

[p5sundevil]

i think he mentioned there was only one header available for his app, the pacesetter? and it was only the upper section...?

 

[scorch70]

i think he mentioned there was only one header available for his app, the pacesetter? and it was only the upper section...?

Oh, oops. Sorry. I just assumed that since us 3rd gen guys have a few header choices, that he would too. That sucks. I know I would give up on any car that had less vendor support than we do.


scorch70

 

[akhilleus]

I believe josh was going to have a header specifically tuned for his application. Also why are u running such high advance on the intake cam side... I was under the impression from my research that u retard a cam that is larger to bring down the powerband and u advance a cam that is smaller to push up the powerband. what are the new cam specs? a regrind would be a good idea. Can't wait to see it dyno tuned

 

[Captain KRM P5]

. I know I would give up on any car that had less vendor support than we do.

now where's the fun in that

 

[Gen1GT]

Yep, I'm getting a custom header(they also make a Genie header for our car, but they're hard to find). I was going to do the header instead of the cams first, but I went and installed my other exhaust cam as an intake cam. I'm getting a 4-1 piece with 1 3/4" Primaries 36" long, into a 2 3/4" collector 10" long. My car's cam specs are 202@ .050, and lift of .338, total duration 232.(intake was 196@ .050, .318 lift). I plan on getting 266 duration, .375" cams. I want to see some dyno results of someone else that has them though first.

Considering my car's making 117whp without a header, and before I've even tuned the cam gears, that's not bad. I see no reason I won't be around 130whp after both are done.

 

[Gen1GT]

now where's the fun in that

Exactly! There may not be a lot of bolt-ons for my car, but my car has WAY more internals available than the FS. ie cams, pistons, rods, cranks, valvetrain etc tec...besides, custom work is fun....

 

[Gen1GT]

I believe josh was going to have a header specifically tuned for his application. Also why are u running such high advance on the intake cam side... I was under the impression from my research that u retard a cam that is larger to bring down the powerband and u advance a cam that is smaller to push up the powerband. what are the new cam specs? a regrind would be a good idea. Can't wait to see it dyno tuned

Sorry, forgot to answer that. It's advanced so much, because my intake cam is actually an exhaust cam, and the phasing is off. With straight up timing, I was only getting power above 4000RPM, and advancing it brought it back down, to decrease the overlap.

 

[Kooldino]

I've always wondered what would happen if we put an FS intake cam into our cars upside down (since the pin will be different).

 

[akhilleus]

It wont run dino...i have tried it

 

[Gen1GT]

I wonder what would happen if you put both cams upside down? I guess it couldn't ignite, since it would try to ignite on the exhaust stroke (braindead

You'd be amazing at how far off you can have your cam timing, and the car will still run though....won't be much power, but it can still run if it's way off.