Nood questions needing your expertise (supercharger on a A/T)
 

No i did no make any mistakes, i chose the a/t cause i have little to no experience in driving a stick and i am not willing to make a brand new car my testing tool.

Anyways, what do you guys think of getting a supercharger on an a/t transmission? What are the drawbacks or down side comparing to a manual trans?

My z is mostly for daily driving and occasionally some frendly racing on a abandonned strip close to home. I think a lil boost will make it more enjoyable.

Any advice is greatly appreciated.

I opted to skip FI on my 7AT, at least for now. I might revisit that decision in another year or so.

There have been reports of failures from the overdrive gears' (5/6/7) valve bodies not being strong enough to handle a solid SC setup. A few people have successful FI+7AT setups so far, but it's hard to judge the meaning of that over the internet, you don't really know for sure how they're driving the car in terms of stress, and nobody knows the long term fallout yet. They say that using UpRev to increase the line pressure to reduce the shift times removes some of this stress, and that may be at least some of the difference between the setups that are surviving vs not. I'd definitely add a transmission fluid cooler, too.

There was talk of GTM doing some valve body upgrades to the 7AT to handle serious FI applications, but it may be several more months before they get this completed, and it's probably a pretty decent additional overhead in cost, build complexity, and wait times.

Both paths are viable, it's really a matter of weighing the evidence (search these forums for related threads) and your personal financial/driving/longevity/headache tradeoffs and preferences. The car is incredibly fun to drive and a good performer even without FI though. Just doing boltons and tuning can keep you happy for a long time to come, IMHO.

There are a lot of good discussions right here under the forced induction tab. All ya gotta do is look. That's how I learned. :tiphat:

i have the stillen SC kit on my automatic 370z w/390whp , i guess the only problem is that my guy told me that the transmission will break much faster and ill have to take another 2k out of my pocket for a new one.

other than that ive had it for about 3 months now, i go crazy with it and it is fine :D

I was doing some digging today, figured out a few basic things I didn't realize before that might be relevant to people doing FI + 7AT builds:

1) Our 7AT transmission (Nissan Part# RE7R01A) is actually made by Jatco. The Jatco part # is JR710E. Searching for that can turn up some technical manuals available, etc.

2) Jatco makes this transmission in two versions: JR710E and JR711E. The 710 model is rated for 400 Nm (~295 ft-lbs), and the JR711E is rated for 600 Nm (~443 ft-lbs).

As best I can tell, they would be "compatible" with just different internals. I wonder which version we have?

Most bolt-on modded cars aren't pushing more than about 250 ft-lbs at the rear wheels, so the JR710E could conceivably be the version Nissan uses for our cars. I also wonder if anyone sells a conversion kit just to replace the JR710E internals with JR711E-rating ones. Some oddball japanese google results I've seen seem to indicate the 370Z and G37 get the JR710E version and the FX50/QX56 vehicles get the JR711E version...

Anyone fluent in Japanese want to call up Jatco and dig around for more info?

For reference, here's a jp wiki page on this transmission, translated by Google: JATCO JR710E/JR711E.

A translated forum post seems to confirm: forum post re 710 vs 711

so how about changing FX gear with Z?

It's possible, if you could find a wrecked late-model FX with a transmission in good quality, maybe a salvage yard would let you have it relatively cheap. I don't have any solid info on compatibility though. It's probably very likely to install compatibly (same mounts, same lines and electrics hookups), but I wonder if the TCM (the mini-ECU on the transmission itself) identifies the transmission to the ECU differently and causes an issue there?

IMHO, the most exciting find would be if Jatco sells a parts kit for all the parts that are different between the two (probably clutches, valve bodies, etc, maybe as a rebuild kit?). It would be like a factory upgrade kit. I wonder if GTM has already looked this stuff up while researching 7AT valve body upgrades.

More info found: baidu has a copy of an SAE technical paper on the development of the JR710E/JR711E and comparisons to the operation of their earlier 5AT: SAE 2009-01-0512

I know a Japanese guy here in dubai working for nissan in marketing, maybe will ask him to dig into it from Japan

thats an interesting read, tel numbers are of USA there?

The tel numbers there are for SAE, which is just a standards body. Jatco phone numbers can be found on their website: JATCO

GTM has a automatic trans kits just for withstanding the abuse and power from a FI either from a turbo.

If you want to get the most out of your 370 with forced induction knowing that you have all the supporting mods to run it smoothly goes a long way in knowing what your car can handle.

great find btw. I just spoke to my buddy who is a tranny tech and he said that if you give them a call they might have internals from anouther tranny they use that can handle the power. He said it is not verry uncommon for them to use the same type of mount system for the internals on other trannys they make for other vehicals. Just a idea and I don't know much about AT trans but hell anything is worth a shot. So in other words if they make a tranny for lets say a vette that can hanle 400 tq there is a possibility the internals for that tranny will work in the nissan 7at tranny. That is just a example and I think I understood him right.

Very interesting info.

Last I heard their kit was still "in development" for a while (the valve body upgrade).

Very interesting. In for more finds/updates.

The following was taken from the "GTM Stage 2 Supercharger Preliminary Testing Results" thread...

Yeah I saw that earlier today.

I also just realized the thread title is "Nood questions" instead of "Noob questions"

I swear I was just about to post the same thing before I scrolled down the page :tiphat:

Damn, I was here for the nudes and was disappointed :mad:

I am also disappointed by the lack of noods.

In for noods.

but the guy was thinking of noodles? :)

Bump,

IS the fx and Q56 trannies for AWD application?

Return of the dead....


RE7R01A: 400Nm (295lb)
http://www.transakpp.ru/images/manuals/JR710_comm.jpg

RE7R01B: 600Nm (442lb)
Modification RE7R01B (Patrol / QX56 / M56), is designed for more torque (600 Nm), as opposed to 400 Nm for RE7R01A. Mounted on SUVs and Nissan Fuga Patrol.

Yeah I've mentioned that 3 times in various threads here over the past couple of years. Either it doesn't work, or some vendors would rather not talk about that swap being a cheaper alternative. c.f. http://www.the370z.com/forced-induct...ml#post1155985

Till you get the SC, just swap a 4.10 diff in the car with bolt ons.
It will be quick. not as quick as and SC set up but it will be way faster than the factory set up with a stock motor and stock gears.

Z

I spoke to a representative from Jatco, USA, and he wasn't sure whether the Transmission from the RE7R01B (JR711E) would work, as the RE7R01B (JR711E) have Bigger Internals and Torque Converter than our current transmission RE7R01A (JR710E).


Both Transmissions are identical in size but differ in internals.

so technically it should be possible to directly swap the better transmission parts into the stock AT transmission?

Yes, and you would need a bigger Torque Converter.

I also reached out to PAT from Level Ten Transmission to find out if it is possible to do a clean swap and/or what would issues if any would they be.

TRANSMISSION M37, M56; 5.6L; 2WD

$9,335.50 New or go scavenging junk yards.

ERMAGERD thats $3,500 more than a stage 4

And you still need to do something about the electronics and bellhousing and stuff.

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Well the new Infiniti Q60 Red Sport 400 has a Twin Turbo engine and uses only a 7sp Automatic.


2017 Infiniti Q60 3.0t Red Sport review | CarAdvice

My question would be, is it still the same 7sp AT (RE7R01A) from its predecessor infiniti Q37?
Or a beefed up version. If it is the same, I also wonder if we could swap their 3.0 TT engine into a Z?

Thoughts or anymore info on this one guys?

It's the same 7AT per Stillen.

STILLEN R&D - Q50 Red Sport 3.0tt - Page 3 - Infiniti Q50 Forum

Just call Pat@Levelten Transmission's in New Jersey,,,he'll build it up to withstand whatever you throw at it.


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