i hread that the t2 engine can bolt up to the n/a drivetrain u just need to use the na flywheel and clutch....tried searching it couldnt find anything about it.also heard that the n/a drivetrain cant handle to much power...was looking to do a cheap setup that would make maybe 300whp at MOST was wondering if the drive train could withstand that type of power all ur input would be greatly appreciated thanks.

 

Drivetrains usually dies due to torque, not power. Turbo engines make more torque, while NA engines make more power by turning faster. An NA engine at 300whp would not be as likely to destroy NA drivetrain as a turbo engine at 300whp.

I would go with the turbo drivetrain if I were you. I have heard of people killing NA drivetrain with a NA engine if they drag race or autocross a lot.

The engine will bolt up with a NA clutch, as you were told.

I hope this helps.

 

thanks.i just wanted to make sure it would bolt up....and now i am wondering how much power could the na drive train handle....i already have a t2 but i want to build another one with out spending a whole lot...heard the t2 drivetrain can handle like 500whp or somethiong like that but those parts are hard to come by where i am....i just want to kno how much power will the na drive train handle under boost BTW setup will be used for drifting.

 

As I said before, it is not power that will destroy your NA drivetrain, it is torque.

My experience has led me to set 180 lb-ft of torque (flywheel) as the maximum for NA drivetrain.

Torque*rpm/5252 = Horsepower

A high rpm engine can make 300 hosepower and not exceed 180 lb-ft of torque.

Your turbo II will probably make more than that. (Almost certainly at 300 WHP.)

 

well anyone else running n/a drivetrain with a t2 engine?i would like opinions on how they hold up and what is the weak points in the drivetrain.

 

i'm running a 6p turbo (n/a driveline)... and the only thing I worry about is shock, meaning I don't drop the clutch.

 

Let's put it this way: I'm buying a ride with T2 swap and N/A drivetrain (LSD equipped) It has a good clutch. I'll post a reply if anything goes within the near future.

doubt it!

Well, there is simmilarity between the N/A FC drivetrain and the Miata drivetrain:


1)You can do a miata gearing swap o the N/A transmission(only machining needed is on the input shaft, otherwise, it all bolts in, ask RX7girl!)

2)The Miata torsen LSD also bolts up to the N/A rear end withought any problem.

I don't know if that's helpful to you, but you can do those to strengthen your drivetrain a bit.

 

the problem is that RX7Girl is running N/A and not TII..Although the TII will bolt up Mechanically,the Reliability isn't there...I am "the other way around",Right now.Sort of..I have a TII transmission Hooked to an N/a Engine,Running a Conversion shaft to the N/A LSD.my plans are to "eventually Go TII"..so,really as long as you don't Go Nuts with the TII engine/N/A driveline Set-up.It should be alright.BUT,get a better Driveline in,or else it's just a Waste of a Good Engine!..good luck,any way you Choose to do your car up!

 

Dunno, Aaron will dissagree with you on that....

And im sorry, but I trust Aaron on this one!

 

I know. I'm sorry I wasn't clear on that. My idea, is to take, lets say, the NB miata box (ie: '98) and put that in the N/A FC housing. I believe that the newer components will be stronger than the 20 year old gears found in the FC box.

You can find a used (maybe even "spec") miata transmission for not a lot of dough at all, so that's a good, budget oriented tip there!

EDIT: that is, if my brain is working right today, and the NA/NB miata box is the same fitment wise, just the latter using stronger stuff inside. If it's different, a 94 trans is still not too expensive!

 

drag racing is what really wrecks the n/a drivetrain. ask me how I know... and this is on a heavily modded (172rwhp) n/a

lots of people run the n/a drivetrain with a T2 motor. it's just less tolerant of hard driving, as in hard shifts, hard launches, etc

 

I have a feeling my drivetrain is gonna go bye bye sometime soon...

 

Basically everyone is right. All you need to do is swap the NA flywheel and clutch assembly onto the TII engine and it all bolts right up.

The NA drivetrain will work fine behind the turbo engine but will be easier to break. How easier? Depends on a lot of things. At last dyno my engine put out 387RWHP, 297 FT-Lbs at low boost.

 

Thats on your N/a drivetrain right?

I was going to wonder if rebuilding the trainsmission will make it last a bit longer.

 

its my experience that the miata.......or at least my Miata couldn't hold much power from itself let alone t2 power range .....

mods on the Miata are bigger valves titanium springs ported head h-beam rods high comp pistons high lift cams
3 inch header back on my 3rd drivetrain
(the newest being installed with the new engine, others went out on stock engine)

so i think its a no go (my opinion)

 

im currently using an conversion driveshaft i bought from mazdarix, on my TII motor to N/A diff . been running it for about 3 months now with some hard driving .

i have a large street port and running an 62-1 turbo .

 

looks like i will be doing this...thanks for all the help everyone....

 

I blew out my na tranny and diff/half-shaft with the na engine. The tranny blew during a hard shift to 2nd, and the half-shaft broke from a hard launch (even with a light flywheel and stock rims and tires?). Bottom line is no hard hard shifts or drag launches and you will be ok until you can afford to do the full TII conversion.

 

NA driveline+TII engine=WIN!!!

Never had any problems out of mine, ask Fero313 or anyone at Deals Gap for the last two years. And I am running 255's out back. Lotsa meat!

 

Yes.

If you are going to do that, you might as well install a TII transmission and use the Mazdatrix TII - NA driveshaft.

 

Umm, learn to shift?

 

How's that clutch holding up?? I got lotsa meat for ya!

 

The clutch is 50/50. Sometimes it grabs hard, sometimes it gets a little slippery. Granted I didn't replace the clutch when I did the swap over 2 years ago. I have an ACT PP to put in when it does eventually die.