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post #1 of 16 Old 10-07-2018, 09:26 PM Thread Starter
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Hello, I'm new here and have done a bunch of searching and a couple posts, but it seems like everything I look at is like 2 years old, alot of old posts even on forum index. My question Is do people actually come on here post and have an active forum??

I've been on a few forums and this one by far seems to be the least active.
just wondering.

could it be because of the type of car (cheap slow and little aftermarket support?) maybe the owners are mostly "non car guys/girls" and only care about point A- point B

I will be doing Some dyno before and afters and see if any one is interested in custom made products a litte later down the line.

Stuff like Ported throttle body to increase airflow/power/efficiency and mpg.

Custom made header priced as low as possible while still making a quality piece since no one makes anything good, and "custom made" can run 6-1200dollars, something that doesnt make sence or work with the typical versa owner.

Will be working on a Turbokit for the versa 1.6 after I finish my Spec V race car.
something with a small dual ball bearing Garret GT2554R turbo that should add 60-80HP @ 8psi with supporting mods, work with the CVT and not grenade it, spool ultra fast and if driven softly make the versa capable of hyper MPG.


Just some of my plans, but the atmosphere here seems rather discouraging

Last edited by Corn-Dog; 10-07-2018 at 09:28 PM.
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post #2 of 16 Old 10-07-2018, 11:08 PM
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Well not to be cute but.....

Have you heard the expression: "making a silk purse out of a sows ear"

No matter what you do it's still a Versa with a really small engine and a poor trans (no matter which one you have).
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post #3 of 16 Old 10-07-2018, 11:58 PM
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'...work with the CVT and not grenade it...'

Good luck with that one, you'll find out why as soon as you do it. The trans is notoriously unreliable even in absolute unstressed form.
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post #4 of 16 Old 10-08-2018, 02:56 AM Thread Starter
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Yeah, its a small engine I know, I'm not looking to build a "fast car" My sentra is at 430whp right now and at 2600lbs, that's fast. I just want to make this car a car that's more enjoyable to drive and more mpg to boot.

On the trans blowing up, I dont doubt it, but do you guys know at what power level it becomes unreliable? some say stock power (could be bad lots, 1st gens, etc etc) there is only one way tofind out 😁 I dont mind the tranny going to crap, there plentiful and not crazy expensive.

Building a kit for me is the easy part, the tuning (proper tuning no piggy backs or black boxes) is the last hurdle BUT uprev who makes tuning software for many nissan vehicles ready cracked the versa HR16DE ECU, and offer basic tuning as of now, here soon they should have full feature software compatible with larger MAF sensors, bigger injectors cam timing etc etc.

I'll start with the basics for now, and once I can I'll start diving deeper.

keep the comment coming.
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post #5 of 16 Old 10-08-2018, 09:07 AM
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The CVT trans is so unreliable there is no way to get your head around it. Some tear up in 20K miles and most after 60k but before 150K. A couple even have made it to 300K. But so many have failed all over the map there is simply no way to say what power level shells them out, the early ones fail only a bit more than the later ones do and even now new ones can fail left and right. Nissan most definitely has not gotten a handle on the problem yet.

Much of it seems tied to the bearing method used to hold the pulley halves in place, both the holder and the bearing balls themselves need better heat treatment to be much harder but Nissan seems loathe to do it as it costs more money. The fluid type may add to that as it needs to be made to have a friction component to help the belt grab the smooth pulleys but then that friction makes the balls tend to gall up instead of slide or roll in use. A case of the lube arguing with itself as to what to do there and the major anachronism of the design.
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post #6 of 16 Old 10-08-2018, 02:02 PM Thread Starter
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well that really sucks. I know Nissans 1st gen CVTs on murano, rogue, altima etc were prone to premature failures. And I know the 2nd gen CVTs in those vehicles were "fixed" and most of the issues went away. So they do know what the problem or problems are and how to fix them, but whether it makes financial sence for them to do so is another story, sometimes OEMs will leave issues and have the consumer pay for it later that than them spending a few bucks up front, simply because it's a "cheap car"

I'm going to do some deeper research on CVT fluids used for racing, mainly stuff for offroad vehicles such as the polaris RZR and a few others also additives, there might be something that can make the nissan fluid more slippery per say for the bearings, but still provide enough friction for the pulleys and drive mechanism. who knows, maybe a simple change to better CVT fluid might go a long way?
Even tho nissan states you must use their stuff.
On my sentra I run Redline heavy duty shock proof oil that's not recommended for my trans, but 390lb ft of torque to the wheels and 7200rpm shifts on the track and I'm still on the original 02 trans and original axles. Yes different beast but just an example of how a good trans fluid can prevent damage and or prolong life.

Time to put on my nerd hat and read read read and see what I can find.

my note is a 2017 with 19k miles right now, I drive like an old man in it simply because why try and go fast when it wont. But as of now, it shifts fine, smooth and no weird or funny business and now I'm gonna go knock on wood n keep my fingers crossed lol. Same with my wifes 2016 Rogue with 70k miles

Thanks for the info.
I appreciate it. Any one else feel free to join in.
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post #7 of 16 Old 10-08-2018, 03:01 PM
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Just to add my two cents worth..............I have a 2012 versa sedan, drive like a little old lady, and with less than 20000 miles on the car and the CVT went south. The check engine light went on, brought it to the dealer, and they diagnosed it as the "central control valve" in the transmission. The car was still under the powertrain warranty, and the dealer called Nissan for authorization to make the repair. They were instructed not to make the repair, but change out the entire tranny for a "new" one. It seems that Nissan has so many problems with the CVTS that they have plenty of them in the pipeline to exchange when a tranny goes bad. To show you how much confidence Nissan has in the CVT tranny, they give you a 12 month, 12000 mile extension to your powertrain warranty, and the same applies if you pay the $4000 out of pocket. Not much confidence in my opinion.
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post #8 of 16 Old 10-08-2018, 07:25 PM
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Just make a note to yourself: If I modify anything on this car my warranty is void....
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post #9 of 16 Old 10-08-2018, 07:36 PM Thread Starter
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Quote:
Originally Posted by Alan_nc View Post
Just make a note to yourself: If I modify anything on this car my warranty is void...……………….
Bolt ons like intakes, header, exhaust, suspension etc, are generally seen as ok when it comes to warranty. Obviously turbos, superchargers are not.
Also changing CVT fluid to an equivalent or better "shouldn't" void powertrain warranty. just like using mobil 1 in your engine.
I did find redline make a synthetic CVT fluid
Red Line Synthetic Oil. Non-Slip CVT
https://www.redlineoil.com/non-slip-cvt

have to check reviews but it says compatible with nissan cvts. worth a look.
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post #10 of 16 Old 10-09-2018, 09:11 PM
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Young grasshopper, you have much to learn or things on your planet are not as they are here on this one. Bolt-ons have LONG been used as warranty violators, exhaust alone if not a crap one like most are can lean an engine out enough to torch it without a tune to make up for it. Luckily most exhaust header makers now have not a clue what a real header is. Suspension work like lowering immediately wrecks front end geometry to again invalidate the warranty. And the use of non-Nissan CVT fluid is indeed a reason to reject warranty if they choose to go there even if the maker says it meets spec. The offroaders you speak of likely use RUBBER CVT belts which are not the same as the steel chain types cars use, and the transmissions are nowhere near the same in operation either. And we are WAAAYY past second gen CVTs now and they have most certainly NOT been 'fixed' although you can accept that if you want. They are if anything going back toward standard ATX design with the CVTs as they add more clutchpacks and planetaries to remove a bunch of the load off the CVT drive itself, an admission they know they cannot make them strong enough.
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