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by **gleem** » Mon Jan 19, 2009 8:41 am

im doing a 12 pound pulley change on my ae101 gtz. Engine still in the car have removed belts etc. Cant see theres any bold or anything holding it on. How is it supposed to be removerd

by **AE82 FXGT** » Mon Jan 19, 2009 1:51 pm

Are you replacing the crank pulley or the one on the supercharger?

The norm is to replace the crank along with the tensioner for the supercharger for clearance.

The subject makes it sound like your playing with the supercharger pulley...

by **gleem** » Mon Jan 19, 2009 10:52 pm

yes i am. suppose ill have to pull the supercharger off

Website · by **Rick** » Tue Jan 20, 2009 5:40 am

You dont have to/need to remove the supercharger to replace the crank pulley.

by **evil_si** » Tue Jan 20, 2009 7:33 am

are you direct driving the supercharger with a smaller pulley?

on the front of the s/c is a black cover held on with 4x 8mm head bolts
behind this is the clutch mechanism and a bolt in the center, it can be undone in place if its a loose fit it will come off, if its tight the s/c will need to come out

if however you have a 165mm pulley you replace the crank pulley, the larger diameter spins the s/c faster
to do this you dont take the s/c off

can you be more specific as to what pulley you are changing?
or what is the size, is it 90mm or 165-175mm?
cheers

by **gleem** » Tue Jan 20, 2009 9:45 am

yeah chanhing the one on the sc it self to 12psi. im looking up how to remove it now

by **Bazda** » Tue Jan 20, 2009 10:40 am

changing on the sc it self...
Will it still be using the magnetic clutch?

by **gleem** » Tue Jan 20, 2009 12:52 pm

yes it will be.

by **tsoob** » Tue Jan 20, 2009 1:08 pm

my understanding was the normal procedure is to change the crank pulley to give more boost from these chargers?

by **~SlideWays~** » Tue Jan 20, 2009 2:19 pm

tsoob wrote:my understanding was the normal procedure is to change the crank pulley to give more boost from these chargers?

Yep thats the normal way but on the SC14 conversion onto other motors its easier to fit a smaller pulley to the supercharger which effectively does the same thing. But all the smaller pulleys I've seen have just been a normal pulley ie no clutch, so its on all the time.

Infact Im pretty sure there are 2 different diameter supercharger clutch pulley's, the later ones being smaller.

by **Bazda** » Tue Jan 20, 2009 2:33 pm

~SlideWays~ wrote:
tsoob wrote:my understanding was the normal procedure is to change the crank pulley to give more boost from these chargers?

Yep thats the normal way but on the SC14 conversion onto other motors its easier to fit a smaller pulley to the supercharger which effectively does the same thing. But all the smaller pulleys I've seen have just been a normal pulley ie no clutch, so its on all the time.

Infact Im pretty sure there are 2 different diameter supercharger clutch pulley's, the later ones being smaller.

His is alerady an ae101 gtz so will have the smaller sc pulley anyhow.
I think I saw somewhere that you can buy just the sc pulley which is smaller. To me is would still be quote difficult to take the setup off with the SC in place.

Easier to just get a bigger crank pulley!

by **mr30%jr** » Tue Jan 20, 2009 3:46 pm

yea have fun with that. dont damage the clutch. or you will have boost 24/7 or none boost

by **evil_si** » Tue Jan 20, 2009 5:05 pm

does your new pulley have a clutch mechanism?

it can be done, a good friend of mine did so, he swears he would never do it in place again thou so much be a bit of a cun7

by **Crampy** » Tue Jan 20, 2009 5:30 pm

These dudes sell clutched and fixed pulleys for the SC12 and SC14.
http://www.pulleybros.com.au/

I'd want to do it with the S/C removed though.

by **gleem** » Tue Jan 20, 2009 8:03 pm

ok ill just remove the whole supercharger itself. Has anybody done the blocking of the air bypass vlave and is it nessesary?

by **mr30%jr** » Tue Jan 20, 2009 9:30 pm

to boost anything over standard yup.

its a biarch and you need to make blankers, investigate doing that while the SC is out.

by **Bazda** » Tue Jan 20, 2009 10:40 pm

gleem wrote:ok ill just remove the whole supercharger itself. Has anybody done the blocking of the air bypass vlave and is it nessesary?

removing the SC, man I hate that job, you have to dismantle the whole intake side, and it all comes off in a sequence.

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