turbochargers.com

[08altima35]

damn mikey, tell us how you really feel

[600hppot]

MAN i am getting SICK and tired of this statement.

you can install turbo on a single cylinder lawnmower if you want to!Hell they even make little mini rubber band driven superchargers for nitro powered R/C cars! With enough money/skill you can make anything work.

I don't care WHAT show cars have the NISSAN CVT and a TURBO. i want to see DAILY DRIVERS with this stuff installed. YOU HAVE no facts, NO PROOF that the XTRONIC CVT will hold up to high horsepower for an extended period of time.

If a company offers you a turbo then please do it, i WANT you to prove me wrong! but don't start talking out your @$$ without real facts.

+1

[08altima35]

i guess i've been out of the loop as i have new information about the turbo kit going on my car.

the kit going on my car is an artisan performace kit and will be availible from artisan performance. there will be a full stainless catback on this kit which will be availible before the turbo kit is released for sale. turbochargers.com are just the masterminds that are developing/engineering this kit and purchasing will be availible thru artisan performance. they started work on my car today and i seriously can't wait to hear the new exhaust system powered by a hissing turbo.

[mcheddadi]

I hate you

lol , nah I love you, I want to be you right now.

[08altima35]

don't even trip mcheddadi. the kit will be availible for you in no time and you'll have one of the fastest street legal rides in canada.

[TheBourneAltimatum]

MAN i am getting SICK and tired of this statement.

you can install turbo on a single cylinder lawnmower if you want to!Hell they even make little mini rubber band driven superchargers for nitro powered R/C cars! With enough money/skill you can make anything work.

I don't care WHAT show cars have the NISSAN CVT and a TURBO. i want to see DAILY DRIVERS with this stuff installed. YOU HAVE no facts, NO PROOF that the XTRONIC CVT will hold up to high horsepower for an extended period of time.

If a company offers you a turbo then please do it, i WANT you to prove me wrong! but don't start talking out your @$$ without real facts.

and you have no proof that the CVT won't take the power, if you hate that statement then boo hoo. i dont think Nissan or any car company will make a transmission that isn't strong enough for whats thrown at it. if you read around and do some research you'll realize that CVT's are now being used on HEAVY DUTY vehicles with A LOT of torque. older CVT's used a chain. the XTRONIC CVT uses a pully and a belt. just like belt driven superchargers rev hard and fast the CVT BELT should be ABLE to tkae the power

[Hussain]

MAN i am getting SICK and tired of this statement.

you can install turbo on a single cylinder lawnmower if you want to!Hell they even make little mini rubber band driven superchargers for nitro powered R/C cars! With enough money/skill you can make anything work.

I don't care WHAT show cars have the NISSAN CVT and a TURBO. i want to see DAILY DRIVERS with this stuff installed. YOU HAVE no facts, NO PROOF that the XTRONIC CVT will hold up to high horsepower for an extended period of time.

If a company offers you a turbo then please do it, i WANT you to prove me wrong! but don't start talking out your @$$ without real facts.

if you look at the comment i replied to, where does it say anything about extended period of time? it said if CVT would take a Turbo and i said yes it's been done. did i claim that you could go 500,000 miles with turbo in a CVT vehicle? NO i did not. so i have "PROOF" that CVT can take turbo because it has been done before.... so i'm not just "talking out my ***"

[Hussain]

thank you Tammer....... that sucks about the Tammy thing the worst i got was "who-sion" or something like that.... my name was only in the papers like everyday for hella long lol

[shift_mikey]

and you have no proof that the CVT won't take the power, if you hate that statement then boo hoo. i dont think Nissan or any car company will make a transmission that isn't strong enough for whats thrown at it. if you read around and do some research you'll realize that CVT's are now being used on HEAVY DUTY vehicles with A LOT of torque. older CVT's used a chain. the XTRONIC CVT uses a pully and a belt. just like belt driven superchargers rev hard and fast the CVT BELT should be ABLE to tkae the power

yes, you are 100% correct, i do not have any proof that these nissan CVT's WON'T take silly amounts of horse power.

I do need to correct you though...... A/C CVT uses a steel belt that is driven by smooth pulleys. It uses friction between the pulley and the clutch to transfer its power. Super chargers commonly use a GROOVED belt which is just like a flexible chain. Also, superchargers don't require nearly the amount of torque to move as a 3200lbs car does.Trucks that use CVTs, have CVT's designed to handle large amounts of torque. The CVT mounted to the 3.5 was built with a certian HP/TQ in mind. Construction equipment has been using CVT's for a long time, however they are HYDROSTATIC. I've rebuilt a few, they are pretty nifty and i highly recommend it LOL.I was really hoping that nissan CVT would have been hydrostatic, but i guess for high speed applications, its not as practical as it is for pure torque.

I'm sorry i came off like that, i'm not trying to be a prick. I just feel that people that go around making claims need to be able to put their money where their mouth is.

I hope the transmission can take double the horsepower it does now! and do it for years!

No hard feelings, i'm one of you guys.

AND I WANT BOOST ON MY CVT TOO!!!

[ppazz1101]

yes, you are 100% correct, i do not have any proof that these nissan CVT's WON'T take silly amounts of horse power.

I do need to correct you though...... A/C CVT uses a steel belt that is driven by smooth pulleys. It uses friction between the pulley and the clutch to transfer its power. Super chargers commonly use a GROOVED belt which is just like a flexible chain. Also, superchargers don't require nearly the amount of torque to move as a 3200lbs car does.Trucks that use CVTs, have CVT's designed to handle large amounts of torque. The CVT mounted to the 3.5 was built with a certian HP/TQ in mind. Construction equipment has been using CVT's for a long time, however they are HYDROSTATIC. I've rebuilt a few, they are pretty nifty and i highly recommend it LOL.I was really hoping that nissan CVT would have been hydrostatic, but i guess for high speed applications, its not as practical as it is for pure torque.

I'm sorry i came off like that, i'm not trying to be a prick. I just feel that people that go around making claims need to be able to put their money where their mouth is.

I hope the transmission can take double the horsepower it does now! and do it for years!

No hard feelings, i'm one of you guys.

AND I WANT BOOST ON MY CVT TOO!!!

I actually agree with your original statement. For one, in all of my research, I have yet to find a specific model number for the CVT used in the Altima coupe. Does anyone know for sure that this CVT is the same as used in the Murano?

Let me rack your brain a little more. The Cobalt that I turbocharged used a GM 4T45E Hydramatic auto trans. GM also used the 4T45E in the Grand Am GT a few years ago, in the V6 Malibu, and a few other V6 applications. However, even with the same model number (4T45E), it's not the same transmission. GM uses different internal parts for each specific application.

My suggestion is to find out exactly which CVT is used in EACH Nissan application. Then see if you can find out what the specific capacities for each transmission is. GM makes that kind of info available to the public on their media website. I would assume that Nissan would provide the information in a similar fashion.

[shift_mikey]

Nissan does have a site that has info about their "technologies", nothing i explored deep enough to see if it contained that kinda info. When i e-mailed nissan corporate asking for power handling specs of the CVT, they told me to contact the local dealer yeah any good that would do

[ppazz1101]

Nissan does have a site that has info about their "technologies", nothing i explored deep enough to see if it contained that kinda info. When i e-mailed nissan corporate asking for power handling specs of the CVT, they told me to contact the local dealer yeah any good that would do

So far, I've found this:http://www.nissan-global.com/E...a.pdf

It only contains the "manual mode" gear ratios. But those could be helpful to anyone wondering about gear ratios.

As far as any other tech stats, I have yet to find them. I'll keep looking into it.

Also, I'm not aware of any production Muranos that came turbocharged. I thought they came with the VQ35? If you guys are simply going off of the fact that they had a GT-C concept Murano that was turbocharged, then there's no way you can use that to speak to the strength of the CVT. Concept cars should never be used to compare with production cars when speaking about technology. Ever.

[shift_mikey]

If you guys are simply going off of the fact that they had a GT-C concept Murano that was turbocharged, then there's no way you can use that to speak to the strength of the CVT. Concept cars should never be used to compare with production cars when speaking about technology. Ever.

[08Coupe]

Very few automakers "Over Build" there cars anymore. It's just a bad business idea. To make beefier parts means more money, higher built costs and less profits. I highly doubt the altima CVT transmission will handle more then 400 crank hp for any length of time. If you turbo any car except a car that already came with forced induction from the factory expect to have to forge the engine parts and upgrade the drivetrain (if available)!!

[08altima35]

damn. this thread has turned into a cvt debate. i expected that. i received word that the same artisan turbo kit on the 6mt will also fit with the cvt, but the down pipe will have to be modified. also, they're not sure if the cvt will hold up to any drastic power increases so.... we'll all just have to wait until someone decides to boost there cvt and see what happens.

[08Coupe]

I'm really looking forward to your build, I've driven a APS twin turbo 350Z and it was awesome..With an upgraded cluth your car should be a blast..The turbo lag from a single may work out in your favor and give your tires a chance to hook..Good Luck

[08altima35]

when jim wolfe comes thru with the clutch i'll be the first to order and i just ordered my 20 inch wheels because tein is coming out with a coil over that should be stiff but comfortable enough to handle 20's with a slight drop. as for the tires, i work for the biggest tire and wheel distributor in the world and will be bringing my car to the next bridgestone and goodyear ride and drive to test the best rubber both have to offer.

[windex]

damn. this thread has turned into a cvt debate. i expected that. i received word that the same artisan turbo kit on the 6mt will also fit with the cvt, but the down pipe will have to be modified. also, they're not sure if the cvt will hold up to any drastic power increases so.... we'll all just have to wait until someone decides to boost there cvt and see what happens.

Well that might be me then. I have a friend that works at a machine shop. I was planning on getting the kit as soon as summer hit and letting artisan install it (if they would). I'm only 4hours from houston so it wouldnt be a bad trip.

[Thannatos]

Ok I need to clear up this whole CVT issue, first of all the nissan xtronic cvt completely foregoes a belt if you want to see how it works go to this page http://auto.howstuffworks.com/cvt3.htmbecause this cvt doesnot have a belt but a set of rotating disks it allows it to handle much greater amounts of power without the risk of the belt breaking, so theoreticaly if you don't exceed the friction coeficient of the disks and cones you will be fine, and if you do exceed it your just gonna sit there not moving your tires. Hope this was helpfull

[adidas2go]

Thats a Toroidal CVT...

The XTRONIC is a Pulley-based system that DOES use a belt, as shown in the link below...

http://www.cutawaycreations.co...arged

[cuzzbubba420]

[TheBourneAltimatum]

600hppot found this yesterday. what do you guys think http://www.nitrofreeze.com/racing.html
Modified by TheBourneAltimatum at 10:59 AM 2/23/2008

[ppazz1101]

600hppot found this yesterday. what do you guys think http://www.nitrofreeze.com/racing.html

Modified by TheBourneAltimatum at 10:59 AM 2/23/2008

People have been cryotreating auto parts for years. If you're talking about engine internals, you should still get forged pistons and rods.

As for the CVT, cryotreating alone won't do a whole lot. It's used in regular auto transmissions to add some strength, but it's certainly not a solution in itself. It's usually done in addition to a full rebuild.

[600hppot]

it would be useful to know exactly what kind of internals nissan uses in the VQ. maybe they already come cryo treated from the factory? I'm pretty sure they're not forged, which means they're cast, and to safely handle 270 mules, those cast parts better be something special. as you all probably don't know, just dropping your average cast piston on the ground will crack it, they're that brittle. Heck, the average cast piston is composed of up to 25% silicon (glass).

Cryo treating greatly reduces a cast part's brittleness (makes the part 3-4 times stronger). And it's cheap to boot. ~$10 per piston (whereas a set of forged will cost anywhere from 500 to 1000).

But we're just talking about pistons. It's actually a lot more vital to get stronger rods and a stronger crankshaft, as they're usually the first components to give under stress.

now im not an expert, i dont know if it's better to get forged or cryo'd casts for an engine going from 270 to ~450 hp. if it was going upwards of 600 hp, id definately go for forged. you don't wanna take risks above 600 ponies.

as for the cvt, why wouldn't it benefit like any other transmission? you're making the parts a lot more resistant to stress. The belt still has the same chance of slipping, but at least the parts are beefed up.

[Thannatos]

Thats a Toroidal CVT...

The XTRONIC is a Pulley-based system that DOES use a belt, as shown in the link below...

http://www.cutawaycreations.co...arged

OOPS didn't mean to sound like an a-hole on the above comment its just that I saw the art that it said nissan and for some reason my brain ignored the Extroid toroidal CVT part.And now commence with the mocking.

[ppazz1101]

it would be useful to know exactly what kind of internals nissan uses in the VQ. maybe they already come cryo treated from the factory? I'm pretty sure they're not forged, which means they're cast, and to safely handle 270 mules, those cast parts better be something special. as you all probably don't know, just dropping your average cast piston on the ground will crack it, they're that brittle. Heck, the average cast piston is composed of up to 25% silicon (glass).

Cryo treating greatly reduces a cast part's brittleness (makes the part 3-4 times stronger). And it's cheap to boot. ~$10 per piston (whereas a set of forged will cost anywhere from 500 to 1000).

But we're just talking about pistons. It's actually a lot more vital to get stronger rods and a stronger crankshaft, as they're usually the first components to give under stress.

now im not an expert, i dont know if it's better to get forged or cryo'd casts for an engine going from 270 to ~450 hp. if it was going upwards of 600 hp, id definately go for forged. you don't wanna take risks above 600 ponies.

as for the cvt, why wouldn't it benefit like any other transmission? you're making the parts a lot more resistant to stress. The belt still has the same chance of slipping, but at least the parts are beefed up.

Not to be mean, but you're way off in some of your info there. I'll address that and your questions.

First, forged > cryo treatment. If you plan on running 450 HP, you better go forged. Cryo treated cast internals will not hold up to 450 HP. Cryo treating simply makes the molecular structure more uniform and dense. It increases tensile strength and wear resistance... but it comes nowhere near the strength of forged parts. Forged internals for this application will not need to be cryo treated. They'll hold more power than anyone here will ever produce on their VQ35.

Second, the crankshaft is usually the last part to go. Rods and pistons are some of the first parts, but don't forget about the value in using aftermarket valve springs and valves when reving to a higher RPM (especially if you're changing the powerband). Crankshafts, even cast, are usually quite strong. It's also part of the nature of the stress put on them. I would guesstimate that you're fine on the stock crank until you get into the 600 HP range.

(Side note: Some people were talking about camshafts. Cams do not need to be replaced in any application - turbo or n/a build. They do not have to be strengthened, as they don't endure anymore stress as power increases. Changing cams simply changes airflow characteristics of the motor - intake and exhaust. They can be beneficial if spec'd appropriately for the application. But by the same token, they can also rob you of power if spec'd inappropriately.)

Third, the CVT operates in a completely different fashion than a normal auto transmission, as everyone here knows. Would it benefit from cryo treatment? Most likely. Cryo treating it will still strengthen some of parts that endure the stress under load (as there are still gears in there). However, your weak point will still remain, and that's the belt and pulley system. Cryo treatment will not help you there. Point is: Address the weak link before strengthening the stronger links. You're still only as strong as your weakest link.

[08altima35]

before we go too much further with all this, does anyone know how the 3.5 a/c internals match up to the 350z internals. i've seen a boosted 350z at the track that the owner claimed to throw down 475 hp to the ground with stock rods, pistons, crank, flywheel, and clutch and had no trouble through 15,000 miles and he ran the 1/8th mile track from time to time. is there any difference in the a/c and 350z rods and pistons?

[One Crazy Max]

before we go too much further with all this, does anyone know how the 3.5 a/c internals match up to the 350z internals. i've seen a boosted 350z at the track that the owner claimed to throw down 475 hp to the ground with stock rods, pistons, crank, flywheel, and clutch and had no trouble through 15,000 miles and he ran the 1/8th mile track from time to time. is there any difference in the a/c and 350z rods and pistons?

i dont believe there were many changes in the bottom end of this VQ compared to the 350z VQ. its the same basically, just a little stronger. nissan did however use a different head and intake cam which gives it the increase in power.

you can most likely build this VQ's bottom end the same way you would build a 350z's bottom end, the only thing that would be different would be the valvetrain and cams.

[600hppot]

Not to be mean, but you're way off in some of your info there. I'll address that and your questions.

First, forged > cryo treatment. If you plan on running 450 HP, you better go forged. Cryo treated cast internals will not hold up to 450 HP. Cryo treating simply makes the molecular structure more uniform and dense. It increases tensile strength and wear resistance... but it comes nowhere near the strength of forged parts. Forged internals for this application will not need to be cryo treated. They'll hold more power than anyone here will ever produce on their VQ35.

Second, the crankshaft is usually the last part to go. Rods and pistons are some of the first parts, but don't forget about the value in using aftermarket valve springs and valves when reving to a higher RPM (especially if you're changing the powerband). Crankshafts, even cast, are usually quite strong. It's also part of the nature of the stress put on them. I would guesstimate that you're fine on the stock crank until you get into the 600 HP range.

(Side note: Some people were talking about camshafts. Cams do not need to be replaced in any application - turbo or n/a build. They do not have to be strengthened, as they don't endure anymore stress as power increases. Changing cams simply changes airflow characteristics of the motor - intake and exhaust. They can be beneficial if spec'd appropriately for the application. But by the same token, they can also rob you of power if spec'd inappropriately.)

Third, the CVT operates in a completely different fashion than a normal auto transmission, as everyone here knows. Would it benefit from cryo treatment? Most likely. Cryo treating it will still strengthen some of parts that endure the stress under load (as there are still gears in there). However, your weak point will still remain, and that's the belt and pulley system. Cryo treatment will not help you there. Point is: Address the weak link before strengthening the stronger links. You're still only as strong as your weakest link.

no offense taken, i know im not an expert.

i was just wondering if it was necessary to dish out all that cash for forged internals if the cast ones could be cryo'd and still survive.

i wish i knew the strength differences between cryo'd casts and forged parts. i've browsed the web with no results.

[08altima35]

the first pics of the turbo development on my car have been posted and there should be some more sometime tonight. just go to turbochargers.com and click on "gallery" then find "Warner's Altima Coupe" and you're there.

whoops, that's a waste of time, here's the link.http://www.turbochargers.com/gallery/