I am currently in the market to get a SC and was wondering what my options are for smaller diameter pullys.What sizes are available? And if you could tell me what the PSI increase is for a smaller pully {per size} and at what RPM the SC will kick in at with the different pullys?Also were would I buy a smaller pully and how much? Are there any sites that have detailed info on these smaller pullys? Sorry for all the ???,if you don't know/or feel like answering all of them then feel free to give me whatever info you can answer.Thanks a bunch!

 

hmmm.. heres what u do.. get the 3.33 pulley thats good for bout 9psi.. which equals tons and tons of fun thats what i had.. now where u get em.. direct from vortec.. price is ummm i think 70or so dollars.. keep in mind.. switching pullies voids ur warrenties so choose wisely.. was that all ur questions?? remember the kermit owns u.. or something.. stan

 

muwhahhaha .. that part did slip mah mind good thing doug there to catch the drunken ramblings

 

How about a 3.51 pully? What is the boost gain and HP increase I will get out of that? Is it like 7.5-8.0 PSI with a 3.51? I want to keep things good relaiblity,so is a 3.51 dangerous or will my car still last 150K miles?Thanks

 

150k?? woah.. u tryin drive thta thing to the eground?? umm 7.5-8.0 sounds about right.. your going to need a diff belt for it too.. but i for get the size umm reliability is how u drive.. if ur constantly power shifting and what have u it's going to be slightyly lower than one would expect dougy better spell check and tec check for me thogh

 

muwhahhahaha.. i didn't ask that.. though it did

 

I plan on buying it from Stillen in late Feb or early March.If it is indeed on back ordor now then hopefully it will be around by the time I ordor and if not I guess I will be waiting.

 

Caught some spelling mistakes for you Ethan...

98 Infiniti I30T 5Spd Things currently being installed in the next few weeks:4 real <b>Sylvania</b> Hid's,Stillen Type II wing,RT Cat,Stillen:Intake,Y-Pipe,cat back <b>exhaust</b> Denso Iridium plugs. Tokico,eibach,RSB,FSTB.Future plans Cefiro 1 piece headlights and full body kit and 20%tint.
{in the spring}, Epic rims,<b>Yokohama</b> A520 235/45/17,momo


BTW, get the 3.25 pulley...

 

no. it's more like

Pulley Size + Idiot driver = Boom.


i know quite a few people with smaller SC pulleys and their cars are working fine without internal mods...

i can't wait until Vapors goes ballistic with his pulley, then, we shall see if there is "boom"
otherwise, besides maybe larger fuel injectors, all should be ok...

--Cheston

 

[QUOTE]Originally posted by Y2KevSE
[I]Caught some spelling mistakes for you Ethan...

98 Infiniti I30T 5Spd Things currently being installed in the next few weeks:4 real <b>Sylvania</b> Hid's,Stillen Type II wing,RT Cat,Stillen:Intake,Y-Pipe,cat back <b>exhaust</b> Denso Iridium plugs. Tokico,eibach,RSB,FSTB.Future plans Cefiro 1 piece headlights and full body kit and 20%tint.
{in the spring}, Epic rims,<b>Yokohama</b> A520 235/45/17,momo

Hey I stade back in 1st grade hehe leave me alone.

Cheston glad to see your still alive and thanks for the info!

 

Sorry... I'm bored.

 

SO what internal mods do you need for the 3.33 pulley to still maintain reliability? I know your gonna need more fuel, but what else will be needed. Also with the smaller pulley does it cut the life of the super charger, the smaller the pulley the faster it spins right? How long is a supercharger good for? What mods do you need to the fuel system? Bigger fuel pump and a fuel regulator, or do you actually have to upgrade the injectors as well? Finally with almost 10 pounds boast will the engine be running to hot?

 

I put the 3.25 on. I do know of a person who is running the 3.33 but has limited miles on it. I've got no problems with my engine handling 10lbs. of intercooled boost.

As long as your not running lean your engine can handle the 3.33 pulley. Your clutch(if stick)/auto may need upgrading after a while. The difference between the boost levels of a 3.33 and 3.25 are very small. The trouble of pulling the SC and swapping pulleys is a pain. Thats why I went with the 3.25. The other day I was second guessing myself for not getting the 3.125. It's all new territory!!!

Those GTP guys are running the 3.0 pulley and getting 13 - 14 lbs. of boost and their engines are holding together(so far). The transmission is a different story.

 

First of all, when I spoke with Vapors, he said that a few people are running the 3.48 pulley and everything is holding up so far, which is the good thing... now as far as you people that say that going with a 3.33 pulley or 3.25 will blow the engine... how do you come to that conclusion.
I know there is a difference between the 300 Z and our engine but if they can safely handle 500 HP without going internal, then why can't ours? Let me get this straight.. if you're freeway driving with a 300 Z TT your boost is probably 0 meaning you're not boosting. With a SC on a max same scenario, are you boosting on freeway driving or are you not. Let me rephrase this if you're confused. If you're freeway driving with a SC'd max, is your SC going crazy under the hood or does it react like a Turbo and is not boosting.

 

well the 300ZX TT (VG30DETT) motor is buld for boost. IE lower compression pistons. the VQ have higher compression (since it's NA). also the VQ is a alum block. this may not mix too well with high boost.

well in a SC your always under boost. the SC is ALWAYS spinning. it depends on the RPM at your hwy speed. if at 75mph your at 3k RPM (auto tranny) then the SC will spin at 3K and depends on what pulley u get is the boost level. the only time the SC is not really pushing boost is probably at idle...where the idle is around 1K or below.

same with a turbo...when the RPMs are low there's little exhaust gas to push the turbine so there's really not much boost...but once there's more exhaust gas (higher rpms) then the turbine would spin faster hence more boost.

 

producing ne boost.

 

steve.. is that mostly because oh you not driving agressive or is it automagic by nature?? the only way i can't produce boost is keeping it under 2k or so.. which is quite a trick.. keeping it under that till the engine warms up is hard enough let alone for weeks..

 

and how much boost each size produces?

What does the SC kit come with stock and how much boost does it produce?

What is the highest boost run on a Maxima (5 speed, AT, or both)and what had to be done to it to make it run reliably?

 

Driving to work in the morning during the winter months with snow/salt on the ground I've got no reason to be aggressive. I can go quarter throttle and be at 3000 rpm at zero vacuum. The smaller pulleys due put you right a zero vacuum real quick.

 

hahaha.. okay i forgot.. i don't drive mine in snow.. so i wasn't thinking about snow + boost = no fun.. i was thinking you meant during summer time..

 

i stand corrected...but that's A LOT of self control to keep it under 2K.

 

dannny u have noooo idea those warm up minutes seem like hourss.. hehhe.. i jus wanna hit it an feele the power.. muwahahahha

 

hey u guys are talkin bout PSI from different pulleys, how bout letting me know what each pulley gains in hp? what does the SC give at the wheels stock, then could you list all the pulleys you know of and the approx. wheel hp gain?

i appreciate it. thanks

casey

 

A lbs. of intercooled boost is about 15hp to 20 hp. Well at least so they say.

Going from the 3.66 to the 3.48 was a 10 to 15 hp jump. Going to the 3.33 or 3.25 will also be another 10 to 15 hp.

After that it's uknown at this time as nobody I know has gone with a smaller pulley than listed above. I could estimate but the more boost you run the greater the heat that is generated by the blower. More heat equals less power but I don't think we are at that point yet.

 

So from what your saying a intercooler will give you about 25-30 additional HP out of a stock SC'er. Also do you think the intercooler increases reliabalty and longevity of your engine? I remember you posting pics of your intercooler on here somewere and I was wondering if you could leave me a link to the pics and any other info like price etc. Thanks a lot!