building a supercharger...

[berdener]

hey guys... I've decieded to put a s/c on my s2k.. I've checked out the kits available and actually realized that I can actually build one of mine with some prof. help with the equipments I already have. The old turbo from my WRX will come in handy at last.. I'll take out the exhaust part of it and hook it up with some gears (which I didn't calculate yet)... For the cooling, I'm going to use the old intercooler of my WRX again... What do u guys think of my little idea?

P.s. the intercooler is goin to be water cooled...

[gomarlins3]

I think that is a lot of work to end up with an untested system. Personally, I would go with a system that has been repeatedly tested and found to work well (CT or Vortec).

[berdener]

well guess you're right but luckly a close friend who also owns an s2k has a pretty big factory with alot of equipment and skilled engineers.. I think we'll actually go into this buss.

[gomarlins3]

Good luck.

[Scott]

Seems like you'll be spending a lot more money for a completely untested product.

But in all honesty, I wish you the very best of luck. I hope it turns out awesome when it's done.

[berdener]

well the thing is I found a Vortech kit just shipped into Turkey and the guy changed his mind on bolting it on... It's got a really reasonable price, but I've heard that the Vortech only puts in the boost at mid 6000s until around 8000 and its boost is really low like 4-6psi... Well at the moment I heard this I just said "u didn't bolt it on correctly..." but it still made me think for a while...

Since I have the 19" rims a little boost at the lower revs would do good...

[gomarlins3]

Both SC systems out for the S give little if any boost before VTEC. Given the type of SC they are, they need lots of RPM's to work well. Once they do work though, hang on. As for power down low, I switched my differential gears to help get through the low range and into VTEC quicker. It doesn't give us more power or torque down low, it just feels like it does.

P.S. I believe the stock boost of the Vortec system is 6 lbs. You can buy a smaller pulley and that can up the boost level.

[darkside98]

where can i go or what can i do to put gears in my car?

[gomarlins3]

Hardtopguy. I had him build me a diff with the gears already inside. He sends you the new diff, you (or pay someone to do it for you) take out your old diff and install the new diff with the gears already in there, and send him back your old diff for a refund of $1,000. He even pays the return shipping. The install is critical so I had him do it since he is an expert. With the 'yellow jacket' (speedometer calibrator) and all the parts, I paid just over $1,000 after my refund.

4.56's
hardtopguy.com :: HTG PERFORMANCE PRODUCTS :: Complete 4.56 ratio final drive gear ****NEW**** in stock


4.77's
hardtopguy.com :: HTG PERFORMANCE PRODUCTS :: 4.77 Final Drive gear only

[darkside98]

is it very hard to pull the complete diff out and reinstall the complete diff? would i see a big difference with the 456's

[gomarlins3]

It's not really hard, but I would recommend getting the car fairly high in the air. I tried it with just jack stands and by myself and had some difficulty. I probably could have got it done if I had another set of hands or had some more area to work with. It was the last two bolts and the carbon box on the fuel line that held me up. I couldn't keep the box out of the way AND support the weight of the diff while pulling it out far enough to get the last two bolts out of the brackets ALL at the same time. I ended up putting it back together and paying a local speed shop to do it for me. Mrs. GM3 paid for the install for my birthday, isn't she sweet.

Yes, you will notice a difference. Many S owners say it's the best mod for the money out there.

[berdener]

what do you guys think of this setup here? I might purchase it instead of a vortech supercharger kit (like the turbo more I guess )

Ultimate-Racing.com

[cpiercecf]

I personally think that the inline pro turbo set up is a better bang for your buck. I believe you get alot power and torque out of there system for the same price.

[gomarlins3]

There are a couple of quality turbo set up out there. InLine Pro, Ultimate Racing, and LoveFab all come to mind.

[bjurasz]

darkside98, given the car has 4.11 gears as stock, that makes 4.56 gears about 11% more leveragy (is that even a word?) (4.56 divided by 4.11 is about 1.11). If you had 11% more power that would be about 263hp. I think you would feel that. The nice thing about gears is they help you at any rpm. At any rpm you get 11% more torque where the wheels meet the pavement. You can't say that about turbos, superchargers, etc.

[s2000isu]

personally I wouldnt even think of trying to turn a turbo into a sc. If you want to use the turbo so bad why not put the turbo on the car as it is?

[acedjinhere]

maybe a newb question but which would be better recommended the 456 ot the 477 like how much of a difference in top speed and acceleration between the two so far i have only taken her to 130 and it felt like there was plenty gear left so would it be better to go with the 477 to gain accel or just the 456 to not totally drop the top end off?

[bjurasz]

Difference in top speed is easy. Its just math, and math isn't hard. Stock gears are 4.11 and stock top-end is about 155. 4.11 divided by 4.77 times 155 equals new top speed.

[acedjinhere]

thanks for the info, i suppose these same calculations could also be applied to the accel. rate also

[S2000808]

Originally Posted by gomarlins3

Hardtopguy. I had him build me a diff with the gears already inside. He sends you the new diff, you (or pay someone to do it for you) take out your old diff and install the new diff with the gears already in there, and send him back your old diff for a refund of $1,000. He even pays the return shipping. The install is critical so I had him do it since he is an expert. With the 'yellow jacket' (speedometer calibrator) and all the parts, I paid just over $1,000 after my refund.

4.56's
hardtopguy.com :: HTG PERFORMANCE PRODUCTS :: Complete 4.56 ratio final drive gear ****NEW**** in stock


4.77's
hardtopguy.com :: HTG PERFORMANCE PRODUCTS :: 4.77 Final Drive gear only

Where does the speedo recalibrator hook up to? Do you wire to the speed sensor like on a motorcycle when you change the sprockets?

[gomarlins3]

Originally Posted by S2000808

Where does the speedo recalibrator hook up to? Do you wire to the speed sensor like on a motorcycle when you change the sprockets?

It attaches to the speedo wire down by the computer in the driver foot well. Our speedo is electronic so it intercepts the signal, modifys it and then sends it along to the odometer/speedo. The instructions will come with the yellowjacket.