I know that this has been talked about on this forum for several years. After finishing my Uprev tune, Mrev 2 Plenum and plenum spacer, CAI intake, I have a thirst for more power.
I asked the tuner if a supercharger could be done, he mentioned it could be done with some minor fabrication. He suggests using a Vortech supercharger unit, transmission cooler and shift kit to add to the unit.
Possible HP increase would be 80-100 to to the wheels
Anyone else actually have done this with results?
I did call Vortech and he mentioned that their G35 Kit would be appropriate for our VQ engine
Supercharger for M35,pull the trigger?
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svard75
- Posts: 1564
- Joined: Mon May 11, 2009 3:26 am
- Car: 06 M35x
- Location: Toronto, Ontario, Canada
Re: Supercharger for M35,pull the trigger?
A few things to consider prior to buying a sc kit.
Set your hp expectations straight. Can you get 80-100hp at the wheels? Yes but for how long before something breaks. Forced induction cars that were built from the ground up for sc or turbos have a lower compression ratio in the cylinder to allow for mega boost 20-24 psi. Unless you rebuild your engine with the correct compression ratio the higher boost could blow you heads. In other words not reliable and sustainable.
How old is your engine? A rebuild may be in order prior to boosting it again for reliabilities sake.
Engine management will be required. A piggy back system that works with your ecu to help advance the spark as needed, tweak the wastegate and blow off valve settings (turbo).
With a sc you could not attempt to achieve 20-24 psi unless you have an after cooler or inter cooler. Something that will keep those air temps low. Without I wouldn't go more than 5psi.
Remember sc run off the engine pulley setup so essentially it robs a tiny bit of parasitic hp to keep the sc turning. I think real world gains will be more like 25hp to the wheels without an inter cooler and possibly 35 with. Now if you have the engine rebuilt with forged, balanced and shot peened internals and heads with larger valves perhaps a nice set of lumpy cams you could play with higher sc compression but again one thing sc are limited on are the rpms are directly related to the size of the pulley. The smaller the pulley the faster it spins=more psi, however again that equates to more parasitic loss. That's why tuners choose turbos over sc anytime.
This was just engine tweaks needed then you need to turn to the transmission and drivetrain. I don't think our automatic transmissions would support a reliable 100 more hp. Even with a cooler I think you would need to have it rebuilt frequently or have the oil replaced much more frequently.
I would even go as far as suggesting the transmission be rebuilt with fresh gears for anything over 50 hp.
I would think that you would have to replace the injectors, fuel pump and fpr as well and possibly go with colder plugs. Plus the higher compression the more spark will be required so you may need secondary coils.
Everyone will sell you a sc kit and claim up to 100hp gains, sure but without an inter cooler, or after cooler and without a properly built engine it won't be reliable. Expect a more conservative 25 hp gain at the wheels with just a sc kit and about 10 more with inter cooler on stock internals for reliability.
Disclaimer: I'm not a tuner rather just some guy that read too many tuner mags and spent too much on cars in the past. Most of my numbers above are estimates. I'm sure others will agree the advice is sound. I also don't want to discourage you. I would love to see someone actually do it but for your sake do it right and reliably or set your expectations ahead of time because $7000 could equal a safe 25 hp at the wheels (probably 40-60 at the crank).
Set your hp expectations straight. Can you get 80-100hp at the wheels? Yes but for how long before something breaks. Forced induction cars that were built from the ground up for sc or turbos have a lower compression ratio in the cylinder to allow for mega boost 20-24 psi. Unless you rebuild your engine with the correct compression ratio the higher boost could blow you heads. In other words not reliable and sustainable.
How old is your engine? A rebuild may be in order prior to boosting it again for reliabilities sake.
Engine management will be required. A piggy back system that works with your ecu to help advance the spark as needed, tweak the wastegate and blow off valve settings (turbo).
With a sc you could not attempt to achieve 20-24 psi unless you have an after cooler or inter cooler. Something that will keep those air temps low. Without I wouldn't go more than 5psi.
Remember sc run off the engine pulley setup so essentially it robs a tiny bit of parasitic hp to keep the sc turning. I think real world gains will be more like 25hp to the wheels without an inter cooler and possibly 35 with. Now if you have the engine rebuilt with forged, balanced and shot peened internals and heads with larger valves perhaps a nice set of lumpy cams you could play with higher sc compression but again one thing sc are limited on are the rpms are directly related to the size of the pulley. The smaller the pulley the faster it spins=more psi, however again that equates to more parasitic loss. That's why tuners choose turbos over sc anytime.
This was just engine tweaks needed then you need to turn to the transmission and drivetrain. I don't think our automatic transmissions would support a reliable 100 more hp. Even with a cooler I think you would need to have it rebuilt frequently or have the oil replaced much more frequently.
I would even go as far as suggesting the transmission be rebuilt with fresh gears for anything over 50 hp.
I would think that you would have to replace the injectors, fuel pump and fpr as well and possibly go with colder plugs. Plus the higher compression the more spark will be required so you may need secondary coils.
Everyone will sell you a sc kit and claim up to 100hp gains, sure but without an inter cooler, or after cooler and without a properly built engine it won't be reliable. Expect a more conservative 25 hp gain at the wheels with just a sc kit and about 10 more with inter cooler on stock internals for reliability.
Disclaimer: I'm not a tuner rather just some guy that read too many tuner mags and spent too much on cars in the past. Most of my numbers above are estimates. I'm sure others will agree the advice is sound. I also don't want to discourage you. I would love to see someone actually do it but for your sake do it right and reliably or set your expectations ahead of time because $7000 could equal a safe 25 hp at the wheels (probably 40-60 at the crank).
Re: Supercharger for M35,pull the trigger?
Wow!
Thanks for all important cautions regarding this upgrade!
Yes, was nervous about this project before your reply....and now scared straight!
I do wonder the power boost from this upgrade is like the dark side, like all mods is very tempting.
Thanks for all important cautions regarding this upgrade!
Yes, was nervous about this project before your reply....and now scared straight!
I do wonder the power boost from this upgrade is like the dark side, like all mods is very tempting.
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svard75
- Posts: 1564
- Joined: Mon May 11, 2009 3:26 am
- Car: 06 M35x
- Location: Toronto, Ontario, Canada
Re: Supercharger for M35,pull the trigger?
It's better to be scared. Once you start down this path be prepared to spend money or have another car for use if this one is out
Re: Supercharger for M35,pull the trigger?
It's possible, but expensive to do it right. To be safe and get good hp results, it's a lot more than just slapping on purchased hardware. You're looking at an engine rebuild and different tune. After it's all said and done, you could have traded in your 35 and put down a nice down payment on a new M56.
I've gone down that route with adding forced induction to a NA car, will not do it again.
Just my opinion, of course.
I've gone down that route with adding forced induction to a NA car, will not do it again.
Just my opinion, of course.
Re: Supercharger for M35,pull the trigger?
Buy a motorcycle and save some money lol
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EniGmA1987
- Posts: 2258
- Joined: Tue Apr 28, 2009 5:13 am
- Car: '06 Infiniti M35 Sport
Re: Supercharger for M35,pull the trigger?
I too really want to put a nice supercharger on this car, but as others have said I would have to put about $15000 of work (maybe closer to $20k) to do it all right with the engine internals to get any kind of decent gains to be worth the trouble and at that point I will ahve spent as much on the one upgrade as the entire car cost me to buy. As AtlM35 said, the same amount could easily be a down payment on a much faster car that is already putting out closer to the HP I want to begin with. So do I want to be a bad a** with an 700HP M35 thats all tweaked out? Sure. Is it at all feasible? Nope.