Printable View
if I have a stock blower pulley that is a (6 rib,3.33'' pulley) and I want to put on a (6 rib,3.12'' pulley) will I need a new crank pulley.Allso do I need a different belt to fit the new pulleys.Finally will the (6 rib 3.12'' pulley) handle 8,9,or even 10 pounds of boost without slipping.If you have had experience in this area please help me out.
kyle
You will not need a new crank pulley. Do not know if you will need a new belt are not depends on how much adjustment you have with your tensioner. I believe that all belts will slip just a matter of how much.
you shouldn't need a new belt.newer vortech idler pulley brackets have an extra hole drilled in them so you can lower the idler pulley's position, therefore taking up the slack in the belt caused by the smaller head unit pulley.at 10 psi belt slippage should not be a concern, (acts like a buffer between hard acceleration and braking) but if you want to get technical figure in about 3-4 percent.
ok well that works out great because I didn't want to have to go out and buy a whole new set of pulleys just for a new blower pulley.only thing is I now have to go and buy a new set of stock pulleys for the new supercharger pulleys because I have underdrive pulleys on it now.I appreciate the help guys thanks.
kyle
You should not have to touch your stock pulleys if you are just changing the SC pulley on the head unit,, Unless Im missing something here,,,, Bee
I'm missing it too. :confused:Quote:
Originally posted by bumblebee03
You should not have to touch your stock pulleys if you are just changing the SC pulley on the head unit,, Unless Im missing something here,,,, Bee
i think kyle is talking about the accessory drive pulleys.if you have a underdrive set, vortechs 2 piece crank pulley won't fit inside a small underdriven pulley.also if you have a one piece vortech crank pulley, it may not clear the aftermarket water pump pulley (too big).i had to put back my stock pulleys.other than looking nice, i really don't miss the underdrives.
I have March pulleys on my car and everything works. Thats one time things worked for me I guess.
wohorsy is right on he is exactly right.The whole thing is.The place that im buying the pulley from said that if I got the blower pulley I would have to get the blower pulley set.For reason's being that the (6 rib pulley) is not enough,and that I had to have a new crack pulley because i have underdrive pulleys on.But I can get a set of used stock pulleys for alot cheaper than his whole blower pulley set.So I can just use the tensioners and stock vortech crank pulley.
kyle
I still dont get it,, if he is just swapping the pulley on the head unit,, then why would that affect the setup he currently has with the larger head unit pulley?,,, should be a simple swap,,,, I have a rib 2.62 pulley with a 6 1/2 crank pulley with underdrive for the accessories if your interested,, Bee
Ok. Kyle what exactly are you running right now? Have you bought any pullies yet? What did the company say about the blower pulley not being enough? Enough for what? After you answer these questions we'll be able to clearly give you great advice. I just want to get things straight because I'm missing something alsoQuote:
Originally posted by kyle
wohorsy is right on he is exactly right.The whole thing is.The place that im buying the pulley from said that if I got the blower pulley I would have to get the blower pulley set.For reason's being that the (6 rib pulley) is not enough,and that I had to have a new crack pulley because i have underdrive pulleys on.But I can get a set of used stock pulleys for alot cheaper than his whole blower pulley set.So I can just use the tensioners and stock vortech crank pulley.
kyle
ok im running underdrive pulleys im not sure exactly what kind they are.they came with the car when I bought it.No I have not bought any pulleys yet.the company said that the underdrive pulleys that I have would not work because they do not have a place for the vortech crank pulley to set on.So I have to get a set of stock pulleys for my car,reason #1 (if I use underdrive water pump pulley the vortech crank pulley will not fit to big,next I need to have a stock crank pulley for the vortech crank pulley to ride on,and finally the company said that if I use a 6 rib pulley that it would slip which I have now been told that I can use the vortech pulley tensioners to tighten up the belt.)
So that is the reason I wanted to know if I had to buy a whole new blower pulley set.And I wanted to know if I had to change the belt because of the smaller blower pulley.
i can see where all the confusion is.ray95 and bumblebee03, i don't think kyle has the supercharger on his car yet.the company kyle is refering to said the head unit pulley would not be enough to complete the installation because he is still running a normally aspirated engine with no supercharger crank pulley.this question is for forcedpower, what kind of crank pulley are you using.1 or 2 piece?i had the motorsport pulley set and had water pump to 1 piece vortech crank pulley interference.
I have just a one piece underdrive crank pulley and once again wohorsy is on top of his game.by the way are you a car engineer wohorsy or do you just know alot about superchargers.
Ok,, I did not know he was not already set up with a SC,,, Kyle,, if you want a one piece pulley for your crank that has an underdrive accessory ratio let me know,, I will give you a good deal on the one I have,, with a 2.62 pulley,,, Bee
I have the crank pulley that came with the s-trim 1 piece. I also used an 8" crank pulley, from March and it cleared. The problem I had with that was the belt would hit the water pump pulley. I had plenty of room for the pulleys though.Quote:
Originally posted by WOHORSY
this question is for forcedpower, what kind of crank pulley are you using.1 or 2 piece?i had the motorsport pulley set and had water pump to 1 piece vortech crank pulley interference.
no i am not an engineer, but i am an ase master certified technician and i was with ford for about 10 years.i have a 90 lx, so i know the road your going down.if you are planning on getting a base vortech kit (6 psi) you will need the stock crank pulley for the vortech pulley to bolt onto.if you move up to the h.o. vortech kit (8 psi) the crank pulley is a one piece design that bolts to your harmonic damper.if your wondering why vortech did this, the 6 psi crank pulley is 6 inches in diameter.the 8 psi pulley is almost 7 inches.the bigger 7 inch pulley will not fit inside the stock crank pulley so they designed it as a 1 piece.
so you were not able to use your original underdrive crank pulley that came with the alternator and water pump pulley?i also switched to a 8 inch crank pulley but had to get a cobra water pump pulley.the belt rides so close i had to check it with a feeler gauge, about .025"Quote:
Originally posted by Forcedpower
I have the crank pulley that came with the s-trim 1 piece. I also used an 8" crank pulley, from March and it cleared. The problem I had with that was the belt would hit the water pump pulley. I had plenty of room for the pulleys though.
I never got the crank pulley. I only got the alt and water pump pulley. Thats when I bought the 8" with underdrive crank, which was a waste of money b/c it killed my car runs much better with the 7". Guess you live and learn.
ok.now everything makes sense.when you say "killed" did you blow a head gasket or do any damage?i switched to a vortech renegade setup because i didn't want to put on a really small head unit pulley, only to have the boost slip slide away.so far everything has worked out.i had the heads o-ringed and switched over to 42 lb injectors over the winter so i can sleep at night..the main reason for switching to a 8" pulley was to bring the boost in sooner without losing pulley surface contact area, because this is still a street driven car.after all, what good is all that boost if it's out of your normally used rpm range.yeah.....sometimes you have to live and learn.
For some reason I couldn't get my car to run right with the 8" crank pulley. Not real sure what the deal was. So I pulled it of and put my 7" back on.