i am looking to buy a pulley for my cobalt ss are they expensive to have installed ? also which one would you recommend without having to do any other modifications ?

 

https://www.cobaltss.net/forums/sear...earchid=296962

 

ok but how much does it cost to have them installed ? i cant find a thread with that on it

 

assuming you have both your hands ... 0$

(thats if you can borrow a pulley puller)

there is no set price for a plulley swap...every shop will have different rates so check around for prices ..

 

normally 20 bucks if you pull off the SC and take it to them. only takes 2 minutes

 

ok.. i will i am thinking about putting in a 2.9 is that pushing it too much with everything bone stock ?

 

should be ok ...go a step or two colder plugs to be safer

 

ok... its just i dont want to screw up any warrenties and what not i am just looking to start doing some performance upgrades for the summer and right now i dont got enough for the intake and that seemed like the cheapest to do to make that car a lil faster

 

well you can allways get a modular pulley system with a 3" to be completely safe and later when you have more money get a smaller pulley ring and swap whenever you like ...

 

will i feel a great amount a difference in performance with a 3" pulley ?

 

yes it will be noticeable ...

I would suggest doing a 2.9 or 3" and do the free intake mod at the same time ... as well as the boost bypas mod (free) and you will be very satisfied with sound and performance

 

i guess i will go with the 2.9" then for now billetflow and i am just worried about costs to have it installed for me cause the places around here by me charge a arm and a leg for everything.

 

do it yourself ..rent a pulley puller and have at her ... if your not that mechanically inclined find a buddy who is and invest in a cold case of beer ...you would be amazed what work you can get done for beer ... I'm sure one of the NJ cobalt owners have a pulley puller they would bring to a meet and help you swap it out for some beer

 

yea that does sound like a good idea though.... i am just hoping for a decent amount of difference in performance... quick question what exactly will a pulley do for me besides more boost from the s/c ?

 

look pretty ???

if the billet flow one you are looking at is Aluminum it will be lighter and thus spin more freely due to less parasitic inertia.. however besides boost the other gains are relatively small … there will be less parasitic drag though, so boost will be increased as well as come on faster

 

damn... idk i am so confused lol as what to do... like i want to get the 2.9" pulley how many psi's will i increase and also HP ?

 

I forget exatly but its just under/around 15

https://www.cobaltss.net/forums/show...0&postcount=12

 

what about horsepower gains ?

 

so if i went with a 2.9" i would not need to do any modifications to my car ?

 

generally accepted assumption is 8-10 WHP for every PSI ... but its not a science ,..there are many factors at play ..(elevation temperature humidity ect)

 

so i would be looking at aroun 235 to the wheels ?

 

depends what you dyno stock ...if you look around this site ...allot of people dyno in the 220-230 range stock ... it also depends on the dyno kind ...

again its not a science ..but it will make a performance difference and it is the best bang for buck mod ..

 

yea exactly what i am looking for you know best buy for the buck you know... just no money to be making other modifications so i was looking for something that doesnt involve me changing other parts along with it so i should be ok with just a 2.9" pulley

 

Get colder plugs too ..they are a cheap saftey

 

so if i am correct i will get 250 hp to the wheels isn't that i lil too high for something that costs $130 doesnt that sound stretching it a little bit ?