[aws lude]

i couldn't find a write up on changing your supercharger pulley size to a 2.3 or 2.4 can anyone point me in the write direction....
or tell me if our stock ecu and everything can handle the change???????
i have 02 3.3. sc 4x4
thanks

 

[dubie2003]

I know you are new and you have a ton of question but please, use the search function for a week and google anything else you have questions on.

You will need a pulley puller. I am not sure if the rent-a-tool at autozone or etc... will work for you. You need to buy your smaller pulley also. Remove the belt, remove the pulley, install new pulley, install new belt (gatorback tends to work the best).

The ecu will work fine but you need to keep an eye on your knock sensor to ensure it doesn't have issues and retard your motor. Also, overboosting a motor isn't good. People have reported issues along the lines of the KS (as mentioned previously) and seals blowning, not to mention bearings wearing out quicker.

 

[aws lude]

well thanks for all the help and yes i have searched and yes i have a good idea of boosting.
I was trying to find a write up on what ppl have done to to switch there pulleys. I know you need a puller and i know what tools u need to do the job.......
but what about injectors and tune and such.........
is it just a swap and drive sort of thing or what
I dont see any write ups in the FAQ's that says u need to do a,b & c to do a pulley swap?????

when someone is trying to search for something specific and u get five hundred useless threads about this and that and a lot of stuff you don't need it is kinda discouraging!!!!!!
it helps a lot when you have a setup like this:
FAQ (Frequently Asked Questions), Common Repairs, etc - Preludepower.com

it is a basic FAQ setup and all u need to do it point and click to find info.......
not look around for hours at stuff that doesn't even help u with what u need.
I think we should try and set something up like this here so it makes it easier for ppl to do upgrades and fixes with no hassle
and it saves ppl from saying search search search............

just a thought i know we have a few like this for the timing belt swap and KS relocation but it kinda ends there..........

just my two cents worth

thanks for all the help tho

 

[dubie2003]

Yes, the search does suck but if you go to advanced search, you can narrow down the crap a lot. The forum owners are susposibly working on a better search but that has been for 2yrs now so idk.

I have yet to hear anyone complain about the injectors or ecu when increasing the boost. The rise in boost isn't anything extreme so the OEM set-up works.

If you want the most out of your ride, then you should probably get some kind of standalone tuner and dial everything in. Past that, it will still be pretty slow when compared to modern motors.

 

[aws lude]

i see a v force plus performance module that 4x4parts.com sells it that what your talking about for standalone tuner to dial everything in???????
or is there something else better for us to use?????
and if it was that simple of a job to do???? I am wondering y i don't see a lot more ppl doing this????????HMMMMMMM makes me wonder

 

[Jnegri2]

If you want the most out of your ride, then you should probably get some kind of standalone tuner and dial everything in. Past that, it will still be pretty slow when compared to modern motors.

I'm still trying to find a tuner for the same engine, its nearly impossible.
I've gone into stores, looked online, called places. Nothing.
But Im still looking for one as im not too thrilled with my mpg's right now. (>10 city)

 

[aws lude]

just a thought what about a ecu swap i know in my honda i had to go from obdo to obd1 to do a turbo setup so i can use a standalone setup.
is there a nissan ecu that is better setup for doing something like this and for rewiring a new harness plug for the ecu

 

[dubie2003]

i see a v force plus performance module that 4x4parts.com sells it that what your talking about for standalone tuner to dial everything in???????
or is there something else better for us to use?????
and if it was that simple of a job to do???? I am wondering y i don't see a lot more ppl doing this????????HMMMMMMM makes me wonder

The v-force thing is not a standalone. They make it sound like a programmer but it seems more like a scangauge system.

I'm still trying to find a tuner for the same engine, its nearly impossible.
I've gone into stores, looked online, called places. Nothing.
But Im still looking for one as im not too thrilled with my mpg's right now. (>10 city)

If you give JET a call, they have been reported to be able to reprogram the Nissan ecu but I have no clue on the gains if any besides the eliminate of the speed limiter.

For the 1st gens, it may be worth looking at what standalone units the 300zx guys are running. I found this: AEM 30-6620 Series 2 Plug-N-Play EMS Nissan 300ZX VG30DE It is expensive but gives you everything you want. There are other standalone units from megasquirt and others but I am unsure if they will work on the VG motors.

 

[aws lude]

I guess that real question is how many ppl are running a 2.3 drive pulley for there supercharger and what did they do to run it:
it says
Measurable boost is dependent on many factors, including but not limited to; modifications such as air intake, exhaust, cam (with rockers, pushrods and springs), temperature, barometric pressure and altitude etc.
* We suggest at the minimum to install a custom air intake and a boost gage when running any overdrive supercharger pulley.
* The �2.3" runs 10 to 12 PSI.
* RPM levels--�2.3" = 14348 sc rpm @ 5500 engine rpm or 14000 @ 5367.

so as long as i have a gage and intake it say im ok lol lol lol it seems to good to be true
im not looking for a drag car just a little more bang for my buck........
someone has to have done this and know a little more about what im talking about?????

 

[dubie2003]

I guess we shall wait for a few of the SC guys to chime in. Just remember that there are only a few on this site so it may take a while. Most that were running the 2.3 have since sold the truck and moved onto other vehicles.

 

[aws lude]

thanks dubie2003 for all the help

 

[aws lude]

what about adding a intercooler......

 

[Critterman]

I have been thinking about this for years for my 01 SC, but have never found out anything concrete.

I have an 06 Solstice 2.4 engine that has the Same MP62 supercharger on it, and no it didn't come that way. to get from 136 rwhp to 274rwhp I have had to do the following:

ungrade injectors from 24 lbs to 62 lbs
custom fuel rail
Intercooler
Custom CAI
Tri-y Header
High flow cat
Custom exhaust
Custom 3 belt pulley system
relocate power steering
Custom tune via HPTuners

I now run 14.8 lbs of boost on a formally normally aspirated engine. There is a lot of other work that had to be done to put the power down, but it is well worth it. I may just have to talk to the guys at the shop that designed my little toy. I know that they work on other vehicles as well.

If you want to ask them your self ask for Dave at DDMWorks. The are on the internet. Tell him I sent you.

 

[dubie2003]

what about adding a intercooler......

That would be a good question. I know most that have a top mounted SC have an intergrated radiator style (coolant to air) mounted on the underside of the SC. If it is not there from the factory, I have no clue how hard it would be to add.

 

[Critterman]

With the top mounted SC it is the only IC you could use is an air to water mounted between the SC and the intake. My little car has a side mounted SC so it pulls air, compresses it and pushes it through an air to air IC mounted in front of the radiator, from there to the other side of the engine where the intake is located.

 

[zerobird]

I wanna wait to see what happens with this thread, I have a 2.3 pulley that I've been debating on installing cuz there has been such lil feedback from those who have already done the swap. Also I only have 60k miles on my rig right now, not tryin to be the first to grenade thier motor. Also would like to have full exhaust work done including headers before I start pumpin more air into my engine.

 

[daves d22u]

I have a 2002 sc. had the pulley its now a paper weight on my desk. eaton sent it back to me when i sent the core back to them. i replaced the nose 2 years ago all the bearings went and i change the oil every 15,000 miles. i have the jet reprogram again. (my ecu went 2 years ago had to buy a new one) only thing i really notice is shifting from 1, 2, and 3 maybe a slight quicker. it dosent cut out at 95 anymore been up over 120 and will never ever do that again in this truck. but when i tow i get 2 mpg better than i use to.
i ran the program and pulley at the same time from 20,000 miles thank god for warranty i needed a new motor at 68,000 direct cause was blown apart cats there was nothing left inside big indacation of alot of unburnt fuel.

 

[aws lude]

so what im taking from this is
the 2.3 pulley puts you on boarder line of breaking, high rev. on s/c and gets to hot
unburnt gas mean your air fuel mix is wrong if im not mistaken......
what about eliminating the cats (if they weren't there) would the same problem still occur?????????

anyone running the 2.4 pulley with a little less boost bit still better than stock have anything to say????????? may be the stock ecu can't adapt as well as we think to compensate for the boost. what about a wide band o2 sensor would that help?????
just throwing ideas out there

and i also read that someone said that if you put headers on a s/c engine that the s/c doesn't like it cause there isn't enough back pressure......?
what about if you use a 2.3 or 2.4 pulley does it create enough back pressure then???????

 

[bjaman]

i ran a 2.3 on my truck. i damaged my snout bearings installing it. it doubled my boost and had lots of power. Gas milage was really bad. Also the 2.3 pully can over rev your blower which can damage the needle bearings. In all honesty if you really want to buy a pulley buy the kit from pulley boys which allows you to swap different size pulleys without pressing them on. This way if you want your gas milage back you can go back to stock.

 

[aws lude]

well the 2.4 would do just fine for me it only revs to 13,750 and is under the 14,000 safe rev limit and it is better than stock.
the one thing im worried about is this unburnt gas thing and if there is another cause to it. this being something wrong with that truck (an isolated incident) or a flaw in our ecu's that can't handle the change in boost