Question about SCing
Registered User
Joined: Mar 2003
Posts: 374
Likes: 13
Brembos should be fine. They probably won't be adequate for sustained braking, like on the track. They'll start to fade before they fail, so if you ever feel your pedal getting mushy, or braking power feels reduced, stop driving aggressively and let them cool down a bit.
as someone who tracks a lot, and who's tracked the g a few times, i can say for sure you have this backwards. You don't need more power to make this a better track car. Do stuff in this order.
1) brakes
2) tires
3) suspension
4) remove unnecessary weight
5) get the car to the limit where power is now what's holding you back
6) add power
7) keep repairing the engine, since the power is killing it.
This is what it works like.
There is no way to add more than a few percent of power without impact on reliability. Anyone who tells you different is either confused or trying to tell you something. The g isn't the best donor car for a track car out there, it's too big and heavy. When you reach the stage of trying to build a track car, give some serious thought to your end goals. I would suggest investigating buying a used bmw e30 race car, spec miata, maybe corvette. Parts availability for these cars is great, and a gutted one can be fast.
Before you do any of that, take your g, totally stock, to an hpde and see if you like it. Motorsports is a very expensive hobby. When you get fast, in a car the size and weight of the g, expect to spend $400-500 per track day in terms of brakes, tires, and rotors used up.
1) brakes
2) tires
3) suspension
4) remove unnecessary weight
5) get the car to the limit where power is now what's holding you back
6) add power
7) keep repairing the engine, since the power is killing it.
This is what it works like.
There is no way to add more than a few percent of power without impact on reliability. Anyone who tells you different is either confused or trying to tell you something. The g isn't the best donor car for a track car out there, it's too big and heavy. When you reach the stage of trying to build a track car, give some serious thought to your end goals. I would suggest investigating buying a used bmw e30 race car, spec miata, maybe corvette. Parts availability for these cars is great, and a gutted one can be fast.
Before you do any of that, take your g, totally stock, to an hpde and see if you like it. Motorsports is a very expensive hobby. When you get fast, in a car the size and weight of the g, expect to spend $400-500 per track day in terms of brakes, tires, and rotors used up.
Registered User
Joined: Mar 2003
Posts: 374
Likes: 13
It's not my thread, I don't really want to hijack it with pics of my car, but here's a link to the track photographer's page of my car from my last track day. 
You need to prove that comment. SC's generate torque faster and easier than any street turbo setup I've seen. Now turbos can go so much farther than SC's can, but that's not what your comment singled out. I had an SC car that we couldn't find where the torque capped out on the dyno. Clear up to 7000 RPMs. Had I built the top end of the motor, I coulda seen torque gains to 8000 RPMs. and it climbed up starting under 1500 RPMs. Show me a turbo graph that starts that low and continues to the motor's threshold?
You need to prove that comment. SC's generate torque faster and easier than any street turbo setup I've seen. Now turbos can go so much farther than SC's can, but that's not what your comment singled out. I had an SC car that we couldn't find where the torque capped out on the dyno. Clear up to 7000 RPMs. Had I built the top end of the motor, I coulda seen torque gains to 8000 RPMs. and it climbed up starting under 1500 RPMs. Show me a turbo graph that starts that low and continues to the motor's threshold?
Last edited by herrschaft; Jun 2, 2011 at 10:21 PM.
Registered User
Joined: Mar 2003
Posts: 374
Likes: 13
Tradeoffs. SC's work at engine RPM and have fixed boost at each RPM. Turbos spin at arbitrary RPM based on engine load, and they're also more efficient since there's less parasitic drag when at partial throttle, so cruising efficiency is better. Downside to turbos is non-linear throttle and slight lag, since the boost is based on a feedback loop.
If you want absolute power, turbo is the way to go. If you want a predictable throttle pedal and instant power, S/C is the way to go. Unless you put a pile of money into the ECU, S/C is better on the track because you can feather the throttle more precisely, where with a turbo you could break your wheels loose once the turbo kicks in.
If you want absolute power, turbo is the way to go. If you want a predictable throttle pedal and instant power, S/C is the way to go. Unless you put a pile of money into the ECU, S/C is better on the track because you can feather the throttle more precisely, where with a turbo you could break your wheels loose once the turbo kicks in.
Then why do the fastest cars in THE WORLD use SCs? An SC can go just as far as a turbo if you got the money to get it where you want it. Gobs of heat transfer, but I digress. I'm not saying SCs are the be-all and end-all to power adders. He!!, the optimum setup is to twin-charge if you have the science degree to make it work properly, the money to make it happen and the room under the hood to make it all fit.
Tradeoffs. SC's work at engine RPM and have fixed boost at each RPM. Turbos spin at arbitrary RPM based on engine load, and they're also more efficient since there's less parasitic drag when at partial throttle, so cruising efficiency is better. Downside to turbos is non-linear throttle and slight lag, since the boost is based on a feedback loop.
If you want absolute power, turbo is the way to go. If you want a predictable throttle pedal and instant power, S/C is the way to go. Unless you put a pile of money into the ECU, S/C is better on the track because you can feather the throttle more precisely, where with a turbo you could break your wheels loose once the turbo kicks in.
If you want absolute power, turbo is the way to go. If you want a predictable throttle pedal and instant power, S/C is the way to go. Unless you put a pile of money into the ECU, S/C is better on the track because you can feather the throttle more precisely, where with a turbo you could break your wheels loose once the turbo kicks in.
I thought we were talking about G35's here???
I'm not getting involved in a "what if" argument.
You may be right, but I haven't seen one SC build surpass the capabilities of the turbo builds on the VQ platform.
I'm not getting involved in a "what if" argument.
You may be right, but I haven't seen one SC build surpass the capabilities of the turbo builds on the VQ platform.
Basically from the comments in this thread i dont think 1 person (besides Herrschaft) in here owns a FI G35. Go to my350z and search over there people that actually have seen and driven several different FI set ups on G/Zs.
Personally if it was my money a JWT 530bb kit if you have no plans of ever getting a built engine, JWT 700bb kit if you even think you might build an engine. Or for a high quality kit with great affordability talk to 350Z T he makes and sells Boosted Performance single turbo kits that will give you the power you need with the easiest install on the market and the best price on new kits.
Personally if it was my money a JWT 530bb kit if you have no plans of ever getting a built engine, JWT 700bb kit if you even think you might build an engine. Or for a high quality kit with great affordability talk to 350Z T he makes and sells Boosted Performance single turbo kits that will give you the power you need with the easiest install on the market and the best price on new kits.
Then state you were limiting your response to the VQ platform. I re-read your responses and never got the feel that was your position. My responses still apply to the VQ as well. He said he was on a budget and it was an "in the future" wish to do this. Should he have the money to properly build this motor to run either way, he will enjoy different experiences from either forced induction application. It's up to what he wants out of it in the end. If all he wanted was to get from zero to break neck speed super quick, the SC will do the trick. If he wants gobs of top end power to run hard for long periods with less heat soak, then turbo fits the bill.
