supercharger pulleys

[Braydenreid]

just wondering what PSI pulley a standard L67 supercharger would be using?
and what is the maximum psi pulley would work fine with everything else stock?
cheers

[karlos]

Factory item is 6psi.

The one you want is 87mm(10psi).You cannot go any further than this untuned or the motor will pull timing and you loose power even though you have more boost.

Where you located?

[colgf]

thats correct, 88mm dia is the go , for 10psi . Standard Boost is about 7psi. But at least put extractors & decent exhaust on it too.

[ducker85]

I made 156rwkw with just exhaust and 14psi, the car ran fine, but if you plan on doing the 1:9 roller rockers get 10psi, as im now make 159rwkw with 10psi

[0081]

I made 156rwkw with just exhaust and 14psi, the car ran fine, but if you plan on doing the 1:9 roller rockers get 10psi, as im now make 159rwkw with 10psi

14psi is to much uncooled.

10psi or 87mm is the max you should go uncooled, dosent matter if its tuned or not as the charger will heat up the air far to much and the motor will pull timing to try and save its self.
It dosent matter if your car ran fine you would have made more power by just increasing the pulley size.

[ducker85]

It dosent matter if your car ran fine you would have made more power by just increasing the pulley size.

ran fine for 6 months hammering the piss outta it. made 144rwkw with exhaust n 10psi, 156rwkw with exhaust n 14psi.

I would only use a 14psi pulley uncooled with cat back exhaust if you DO NOT plan on doing any more mods. If you wanna use 1:9 rocker etc buy a 10psi untill you get a intercooler. Im currently on 10psi and waiting for either incooler and tune or a V8

[Braydenreid]

im in canberra. would you recommend getting anything else with the 10 psi pulley? such as extractors or bigger injectors?
aslo how do people go about intercooling there supercharger? or would you need to get a upgrade?

[0081]

ran fine for 6 months hammering the piss outta it. made 144rwkw with exhaust n 10psi, 156rwkw with exhaust n 14psi.

I would only use a 14psi pulley uncooled with cat back exhaust if you DO NOT plan on doing any more mods. If you wanna use 1:9 rocker etc buy a 10psi untill you get a intercooler. Im currently on 10psi and waiting for either incooler and tune or a V8

This has been dont to death, more than 10psi or 87mm and you ARE doing damage to your motor. If you have a few mods eg exhaust, rockers or cam you might get away with 12psi but you realy tempting fate.
Do yourself a favour and get on to l67torque and have a read there.

You clearly have no idea everything you have said is the complete opposite of what you should do.

[0081]

im in canberra. would you recommend getting anything else with the 10 psi pulley? such as extractors or bigger injectors?
aslo how do people go about intercooling there supercharger? or would you need to get a upgrade?

first how much power do you want?? there are many options but you first need to work out what you want.

exhaust is always a good idea as is a good air filter

[karlos]

im in canberra. would you recommend getting anything else with the 10 psi pulley? such as extractors or bigger injectors?
aslo how do people go about intercooling there supercharger? or would you need to get a upgrade?

I reccomend upgrading the catback exhaust to a twin 2 1/4" or single 3" if you dont mind the noise.Some MACE $475 1.9 Rockers will top it off.Make sure you run 98 octane fuel.If you havent upgraded the CAI then add a MACE or my preference BYE Performance enclosed setup,if money is tight then a Lukey panel filter(Ebay)$40 will suffice,you can also cut a large opening in the lower front section of the standard airbox.Extractors are not needed yet.

As far as injectors go you will be fine untill you intercool/tune the beast.Standard items are 36lb Bosch injectorsknown as "white tops".

Now intercooling gives you two options,Air2Air or Water2Air setup.Ill try and be simple with the descriptions.

Air2Air=Lower manifold/blower temps,less of a stealth look under bonnet,more blower wine,tad more torque,bonnet needs some trimming(liner ect,no holes though only minor),firewall needs massaging a little for Ubend to clear,K-frame spacers avoid this somewhat,needs a tune to run.There are a few other small things(42lb injectors and MAFLESS consideration)

Water2Air=Higher manifold/blower temps,stealth under bonnet,easier install,lower cost,no body mods needed,no tune needed either with gains had straight away.

Air2Air has imo become the better way to intercool the L67 but has the problem with sticking out like dogs balls and the blower wine is incredible,I could live with that though.

Sign up at L67torque.com and get "all" the info you need from people with plenty of runs on the board.

As far as the pulley go's see the site sponser Steve(MACE) for one of his items or alternatively BYE Performance,Yella Terra(if in stock).Avoid FIT and V6superchargedperformance(same people).

[karlos]

This has been dont to death, more than 10psi or 87mm and you ARE doing damage to your motor. If you have a few mods eg exhaust, rockers or cam you might get away with 12psi but you realy tempting fate.
Do yourself a favour and get on to l67torque and have a read there.

You clearly have no idea everything you have said is the complete opposite of what you should do.

Chill bloke lol,he is over at L67 learning as we all are.His over boost problem was fixed on that site,he is still learning terminology ect so to speak on these,so am I.

[Braydenreid]

i was thinking of getting twin 2.5 because i do like the sound of a loud exhaust. its already got standard s pak CAI with a K&N filter. thanks for all the help, ill go check out that website

[0081]

Chill bloke lol,he is over at L67 learning as we all are.His over boost problem was fixed on that site,he is still learning terminology ect so to speak on these,so am I.

Im chilled, I was just trying to get the message across and it sounded like he didnt want to hear it as he said "mine ran fine."

[0081]

i was thinking of getting twin 2.5 because i do like the sound of a loud exhaust. its already got standard s pak CAI with a K&N filter. thanks for all the help, ill go check out that website

2.5" is to big unless you are going to do lots of mods and want lots more power.

I would say if you want sub 200rwkw go a w2a cooler
over 200rwkw go a2a

[ducker85]

This has been dont to death, more than 10psi or 87mm and you ARE doing damage to your motor. If you have a few mods eg exhaust, rockers or cam you might get away with 12psi but you realy tempting fate.
Do yourself a favour and get on to l67torque and have a read there.

You clearly have no idea everything you have said is the complete opposite of what you should do.

I clearly stated my my opinion, im on L67torque.com and I have dyno pappers to prove my point.

Exhaust and 14psi (note 3rd gear)



Extractors, hi-flow cats, twin 2 1/2 LS1 system, 69mm TB, CAI, K&N filter, 1:9 rockers and 10psi pulley (2nd gear)



if you only wanna spend about 1200 bucks run high boost to make 156rwkw and suffer that it might cut timing when hot (never happened to me but could see it on dyno as it warmed up) or do it properly and spend nearly 3500 grand like me and every1 else before us to make 160rwkw.

either way your computer will protect your bottom end and its rare they go bang if you mantain them n service it every 10,000kms or whatever.

there's all my information on the subject, remember im running 10psi again now so maybe you better off starting with 10psi and going from there

Chill bloke lol,he is over at L67 learning as we all are.His over boost problem was fixed on that site,he is still learning terminology ect so to speak on these,so am I.

thanks mate, It all depends on your budget in my eye's

[0081]

I clearly stated my my opinion, im on L67torque.com and I have dyno pappers to prove my point.

Exhaust and 14psi (note 3rd gear)



Extractors, hi-flow cats, twin 2 1/2 LS1 system, 69mm TB, CAI, K&N filter, 1:9 rockers and 10psi pulley (2nd gear)



if you only wanna spend about 1200 bucks run high boost to make 156rwkw and suffer that it might cut timing when hot (never happened to me but could see it on dyno as it warmed up) or do it properly and spend nearly 3500 grand like me and every1 else before us to make 160rwkw.

either way your computer will protect your bottom end and its rare they go bang if you mantain them n service it every 10,000kms or whatever.

there's all my information on the subject, remember im running 10psi again now so maybe you better off starting with 10psi and going from there



thanks mate, It all depends on your budget in my eye's

Its the heat generated form the charger that kills your motor it you dont want to belive it thats fine with me

I also have not seen your post in l67 but from the two print outs above it shows what im saying is correct

[ducker85]

Its the heat generated form the charger that kills your motor it you dont want to belive it thats fine with me

I also have not seen your post in l67 but from the two print outs above it shows what im saying is correct

I know, im not saying your wrong. for cheap quick power there's a different way to get it. I feel I can prove that there's a reason why people go 10psi because it surports further mods like the rockers or a cam before an intercooler is needed. where the timing lose it too great from higher un-cooled boost. As i tryed to say above I think it comes down to money. not every1 is willing to spend 3000 on a car and do not plan to continue moding it afterwards either.

here's my thread on L67torque click which shows on failure and improves as I work thru my mods (large MAF = fail etc.) its one of 3 or 4 VT Calais Internationals on there so I not sure how you missed it??

And once again im on 10psi now

Mate Braydenreid buy a 10psi pulley for now you can always pick up new pulleys cheap once you install a FIT or MACE pulley hub

[Braydenreid]

thanks for the advice

[Dr.304]

An AFR of 13+ at High RPM and WOT? Combustion Temps would be very hot.


EDIT: Yes, i just realized, thread dig. Sue me.