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2005 Infiniti G35 RWD V6 Modification
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kyoto
Novice
Mar 16, 2015, 2:44 AM
Post #1 of 22
(1780 views)
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2005 Infiniti G35 RWD V6 Modification
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Alright, so I'll very soon be receiving a 2005 Infiniti (Nissan) G35 RWD V6 that is completely stock. I want to soup it up by replacing the engine and transmission. I've seen some videos online about people putting LS1's and LS2's (which I believe are Corvette engines) into their G35s, and I was wondering if that is what I should use or not.
So firstly, what I'm looking for is any engine over 4 liters, a V8 with at least 24 valves, and between 350 and 500 horsepower to replace the stock V6 engine without requiring any or, at least very little, serious modifications to other parts of the car. Any ideas would be greatly appreciated.
Secondly, I'm looking for a compatible 5 or 6-speed automatic transmission. I don't know as much about these, but I need one that will be focused only towards acceleration and take-off, not top end speed, as I'll be driving in the city and wont be able to top out anyways. Also, I'd prefer that the torque stay just low enough that the car takes off without burning out, or have very little burn out, but still giving it the maximum power for the fastest take-off. It currently has a 5-speed transmission, and the car has a curb weight of 3,395 lbs (~1,540 kg).
Lastly, I realize that these modifications require other additional modifications to other components in the car, some are obvious, some not so much, and I'd like to know what other components in the vehicle will need to be replaced so that they do not fail under stress. And also, please let me know of any other non-necessary but preferred modifications, such as a K&N air filter, that would be useful in increasing performance.
Thank you all for taking time to read this, my greatest appreciation to you all :)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 3:08 AM
Post #2 of 22
(1771 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Oh boy! No question people have successfully totally altered vehicles and drivetrains and could even make them street legal. #1 is this site is ill equipped IMO with something that would be that extensive to be the right place for you if you really want a 500HP city vehicle!
Pretty much IMO I think you'll find you are only using the shell of the one car and virtually every required component, wires, controls and more than would fit in this site 100% swapped over with wild custom work to be functional let alone street legal. That up to reinforcing body parts/chassis parts for stresses beyond what was ever intended.
If you have a bottomless budget probably best to find a place that does the exact thing you seek. It would be difficult if a similar or same vehicle maker never mind this.
Others will chime in. My suggestion for ease (if you can even say that) for custom stuff anything this dramatic is go get as old a frame/body as possible using GM small block drivetrains are usually the choice of many,
T
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kyoto
Novice
Mar 16, 2015, 3:28 AM
Post #3 of 22
(1765 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Thanks for replying so quickly Tom. Yes I realize there would be a lot of work required, but I am prepared to do just that. The engine can be anywhere from 350 to 500 HP, it comes stock with 280 HP, so I assumed this to be a reasonable range, even though I know I would most likely use something closer to 350 or 400 HP.
But would I really need to replace everything? I was hoping just main things like engine, transmission, crank shaft, differentials, flywheel, drive shaft, and sway bars.
I know that there are plenty of shops that would do this kind of work, but I hoping to complete the task myself, because I enjoy doing this type of thing and take pride in my work. And yes, it would cost some money to do all of this, which I understand and am prepared for.
Thanks
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 4:18 AM
Post #4 of 22
(1760 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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OK - You need to understand using the body of a 2005 you really can only keep the shape and the whole rest of the drivetrain would be designed to your specifications but if you must (many places would) meet all the regulations such as emissions, safety equipment and a list of thing required for 2005 which would be what the creation would be you'll need some wild engineering and where I am approved of or not by a DMV with proof of compliance.
Totally to me most choose some old truck or car frame and do anything they want for how it will come out or look.
You may have seen some other one and the handiwork but chances are was a show only non true street legal vehicle for show and entertainment. That's a whole different game.
So far you don't seem to even know what you want just something you've seen and didn't really know how it got that way. At my end I see something finished that appears like an Infinity and everything else is something else and that kind of project if not pre-engineered already would take a team of assorted trades if you wanted to be able to have a useful vehicle other than for a parade or show could run wildly over $150,000US bucks on up!
So yes, people create interesting things out there from V8 lawnmowers and more just for fun. Do some checking on what you want for an end creation is what it would be and know that this site near totally concentrates on existing engineering of a known vehicle.
You mentioned a Corvette with such a drivetrain. It would be much more practical to just buy that Corvette totally and customize paint and esthetics to you liking that are useable if you want to really drive it on roads or just for special events type of thing.
In short, this isn't the site for creative cars but could help with one aspect of something to get right.
What you mentioned certainly does happen out there but do you have the place and people to do it that takes millions if you want something as a daily drivable creation,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 9:42 AM
Post #5 of 22
(1750 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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I think he needs to get out of high school before destroying his dads car.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 10:06 AM
Post #6 of 22
(1747 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Ya. Was thinking more about this. Why (not my job what people fancy for fun) would anyone care about any Infinity already with plenty of power for any driving want it for city use said up top. I don't think OP has any clue that doing this trick would involve unlimited funds that IMO would be a waste IMO again as who the heck would want it if it came out right but only my opinion?
So current suggestion is don't even try this as it would highly likely ruin two cars if a Corvette drivetrain was the choice you'd no doubt have to buy the whole car and wreck it doing this,
T
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kyoto
Novice
Mar 16, 2015, 10:17 AM
Post #7 of 22
(1745 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Ok, thank you Tom, I may end up doing that, but if I were just going to replace the engine, from the stock 280HP one to a V8 one with at least 24 valves and over 4 liters with around 400HP, would I still need to replace everything? Which components would need to be replaced to handle the extra stress for just that?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 10:29 AM
Post #8 of 22
(1742 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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NO. I seriously now know you don't know what you would be getting into. Why would you care if a V8 or how many valves? Dumb, you could do it with a 4 cyl if you had the right designs to achieve HP wanted but you would ruin the whole car doing this.
HEAR ME. YOU WOULD JUST USE THE SHELL OF AN INFINITY and the rest would be fabricated. Apples and oranges on this. It isn't like the same car maker made another engine you wanted - that would still be a wild hassle.
280HP is plenty already. Add a lot more you'd bend things if it did have a lot more and need to reinforce areas. You are out of you league and this is just a whim you saw something on a video and no clue what it took to do something that might have worked.
Just that you are asking these questions makes it clear this isn't for you at all,
T
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Discretesignals
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 2:59 PM
Post #9 of 22
(1732 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Just one question. Is this going to be your daily driver?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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kyoto
Novice
Mar 16, 2015, 4:10 PM
Post #10 of 22
(1730 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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It would be, and yes I know it wouldn't be the best on gas, but gas is nearly $2/gal here, so I'm not exactly worried, if that's what you're getting at.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 4:27 PM
Post #11 of 22
(1728 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Sport - you even think about cost of fuel compared to what this would cost to really do up and work? YOU ARE NUTS! A perfect transplant to include more than I could list like brakes up the extra weight, suspension plus wild hassles of moving or cutting out body parts to make room, reinforce as needed, collision tolerance of alterations.... etc., you could spike $200,000 bucks - YOU ARE NUTS! For a glorified Datsun! Have it your way, Burger King,
T
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kyoto
Novice
Mar 16, 2015, 4:40 PM
Post #12 of 22
(1724 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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First off, I was just answering his question.
Secondly, you don't need to repeatedly yell at me, even if I did do go through with this, it would be my time and my money. I simply wanted to know what it would take to do this, not be scorned as if I were a 5 year old child.
(This post was edited by kyoto on Mar 16, 2015, 4:41 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 4:41 PM
Post #13 of 22
(1722 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Not to mention, it's totally against Federal Law to do that.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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kyoto
Novice
Mar 16, 2015, 4:52 PM
Post #15 of 22
(1719 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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It's illegal to replace an engine and transmission and add a few supports? My dad did all of this, added the cluth pedal, and put in a Hurst shifter by himself when he was 16 years old to a Ford Mustang. So it's hard to believe that it would be illegal. and yea im totally 15 years old....
(This post was edited by kyoto on Mar 16, 2015, 4:59 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 4:59 PM
Post #16 of 22
(1711 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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It certainly is.
That is an emissions certified vehicle and modifying the emissions package in any way is punishable by a fine of up to $25,000.
Quote:
Supplemental Information
Potential Tampering Liability Associated with Fuel Economy Retrofit Devices
The federal tampering prohibition is contained in section 203(a)(3) of the Clean Air Act (Act), 42
U.S.C. 7522(a)(3). Section 203(a)(3)(A) of the Act prohibits any person from removing or
rendering inoperative any device or element of design installed on or in any motor vehicle in
compliance with regulations under Title II of the Act (i.e., regulations requiring certification that
vehicles meet federal emissions standards). The maximum civil penalty for a violation of this
section by a manufacturer or dealer is $25,000; for any other person, $2,500.
Section 203(a)(3)(B) of the Act prohibits any person from manufacturing or selling, or offering to
sell, or installing, any part or component intended for use with, or as part of, any motor vehicle or
motor vehicle engine where a principal effect of the part or component is to bypass, defeat, or
render inoperative any device or element of design installed on or in a motor vehicle or motor
vehicle engine, and where the person knows or should know that such part or component is being
offered for sale or is being installed for such use. The maximum civil penalty for a violation of
this section is $2,500.
Installing any device, system or part(s) which affect the fuel delivery rate or the combustion
process would be expected to affect elements of design of the emissions control system.
Accordingly, any change from the original certified configuration of a vehicle such as adding a
system or parts that affect the fuel delivery rate or the combustion process, or the manufacture,
sale of, or installation of, aftermarket parts or systems which are not equivalent to the original
equipment could be considered violations of section 203(a)(3) of the Act.
ENFORCEMENT
However, EPA has established an enforcement policy, Mobile Source Enforcement Memorandum No. 1A
(Memorandum 1A), to provide guidance to the public to reduce the uncertainty regarding
potential liability under section 203(a)(3) of the Act for using or selling aftermarket parts or
systems, or making adjustments or alterations to parts or system parameters.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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kyoto
Novice
Mar 16, 2015, 5:02 PM
Post #17 of 22
(1709 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Why would I need to modify the exhaust system when I replace the engine, and possibly transmission? that may sound dumb, but can't I just connect it to the current emissions components, even with a slight decrease in performance?
oh, but that's saying I cant replace the engine at all because that would cause changes in everything it says....
so my next question is how are all these people on youtube doing it legally?
and does this law apply to vehicles manufactured before a certain year?
and wouldn't this apply to turbochargers/superchargers? but yet there are plenty of shops around the city here that install those
(This post was edited by kyoto on Mar 16, 2015, 5:08 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 5:07 PM
Post #18 of 22
(1705 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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OK, I feel like I'm babysitting here.
Just the fact of using a different engine would be tampering. You have no clue at all what you're even contemplating here. Your engine is computer controlled for one package and one specific package only. You are talking about custom engineering the computer system and every piece of wiring in the car, not to mention the mechanical modifications required.
Forget it. You're way out of your league.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 5:12 PM
Post #19 of 22
(1703 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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You don't get it. It's not that easy. Essentially you are keeping just the looks of one and totally changing over everything from the vehicle with an engine you want that never belonged in it, no communication to any controls thru computer anything nor would it plain fit without wild alterations to the body left.
I'm in MA and like some other places YOU would have to prove the finished car met all standards for public road use. Just the body you are switching from a chassis to unitized would be an engineering project so it would steer, turn, stop and handle basics. That would take tons of more engineering for suspension, wheels and tires.
Hey - I want to move to Antarctica and have an orange tree farm! Yes it could be done and about makes as much sense as this,
T
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kyoto
Novice
Mar 16, 2015, 5:19 PM
Post #20 of 22
(1700 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Ok, so let's say that I only added a supercharger/turbocharger to the car, and necessary supports, which I have seen all over the city and several shops that do this work, so I know it's not illegal. Is there any other BS laws to prevent me from doing this?
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 6:14 PM
Post #21 of 22
(1690 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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Ypu just don't get it junior.
Yes, it would be illegal. That package was certified without that equipment. That equipment would dramatically change emissions and the engine it was factorey installed on was modified to compensate for that.
I'm tired of explaining nonsense to a kid that doesn't know any better.
I'm closing this thread now. It's gone far enough.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 16, 2015, 6:17 PM
Post #22 of 22
(1687 views)
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Re: 2005 Infiniti G35 RWD V6 Modification
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I'm almost done for the night with this. It's not legal to be a pain in the arse but rather to be safe for others who SHARE public roads and you and passenger.
So much has to be thought out. The exhaust alone would be different and need to be heat shielded such that it didn't blow up in flames.
Cooling system would or should be enhanced to handle more heat to get rid of. If you want proper heat and A/C that would be another whole project and anything still has to fit.
Biggest problem is it's decades too new to alter and get any benefit that didn't harm it in some other way. Too much to consider to be worth it.
If you like a certain Corvette and engine why oh why don't you just get that car and get rid of this one?
T
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