FMS cam ???

[ToSloTrk]

I'm looking for anyone with experience with a FMS comp. cam. I need to know if I will lose bottom end power with this cam? I'm planning a winter project for the Festiva. The mods will be a head rebuild,milled 30 thou. for higher compession with a home port & polish.

these mods are planned primarily for improved fuel economy.

[FestYboy]

you'll be good as long as you use a close to stock sized exhaust (no bigger than 2") and the stock or B3 header (small tubes).

the cam will also allow you to play in a different rev range, so use that to your advantage.

[muscle_Car1]

I need to know if I will lose bottom end power with this cam?

Yes. You are using a race cam. You will make more power higher in the powerband at the expense of low end grunt. More power up top more fuel used....

[canadianfestiva]

I dont notice a lag in power too much, but then again I installed it in a B6 not a B3....

Plenty of power in 1st lol almost too much.... IF there were such a thing !

[FestYboy]

the comp cam isn't the race cam, what little bottom end you loose won't be felt once you're out of first

[muscle_Car1]

Ahh I see. I thought they had a performance & competition cams not a comp & race.

I retract my statement.

[ToSloTrk]

I don't want to take a chance at losing any bottom end power.I'll probably end up skipping the cam.

[muscle_Car1]

Yeah i'm not thinking that a performance cam will decrease fuel consumption.

[FestYboy]

J, pony up the cash and get the cam, it's worth it... really.

[getnpsi]

By adding higher compression you might have about the same low end and much more up top. I know the b3 can only breathe so much but you should be ok.
Personally i wouldn't do any work to a b3 when a b6 fits the same, and at least you guys do not have to reharness to change computers like I have to in the aspire. Bonus is the cam will work on the b6 and with the extra displacement the comp cam would make you happy for sure.

[ToSloTrk]

Well I just got the head back from the machine shop valve job and milled .030.
Fms cam is laying on the workbench now all I need to do is find time to swap heads.
I,ll also be using my modified cam gear to advance the cam approx.4 deg.

Hopefully I'll have the thing running in a few weeks.


getnpsi... I'm sticking w/the B3 for fuel mileage reasons I don't think my buddys B6 will ever get the 48-53 mpg I'm getting with the B3.

.

[jlord16]

let us know how it goes once installed mate

im looking at doing pretty much the same thing

[ToSloTrk]

Got the head and cam installed def has more power.

with the FMS comp cam installed straight up (no advance) I would say it has less power from idle to 2500 than a stock Festiva but from 4000-6000 it def pulls much harder.

I then advanced the cam approx. 4 deg. by egging the hole on the cam gear.now I have
a bit more torque down in the lower rpms but sacrifice a bit up top. this is the setting I'll keep I think it's a good compromise for low rpm torque and high rpm power.

I did try advancing the cam appox. 7 deg. but wasn't happy with the results I didn't gain much power down low but lost plenty up top.


For anyone wanting more usable power from the 1.3 without spending money I would highly recomend advancing the stock cam 4 deg. Advancing the cam will move the powerband lower where you spend most of your driving time. one thing to remember is this will not make raise your peak hp it will only improve your power in the lower rpms. NOTE: If you are always reving your car to redline this may not be for you as you have sacrificed a few hundred rpms of power at high rpms for more power at low rpms.


In a test I did stock vs advanced 5th gear 30-60 my times were 12% quicker with the advanced cam.

I hope I haven't been to confusing if I have feel free to ask questions.
J.W>

[getnpsi]

hm. not knocking the change in the cam position but how much power was gained from a fresh head with a little more compression.

i have an extra cam gear sitting here, which way do i hog this bad boy

[ToSloTrk]

If you are looking at the motor from the passenger side you'll be hogging the hole larger to the right. be carefull when hogging it out as you only need about 1/2 tooth on the cam gear.
I had it easy as I did it on a spare head laying on the workbench.