I plan to get a turbo engine and swap it with my na within the next couple of months, and I'm wondering how long my trannsmission will hold up to the extra torque. We're talking about under 3000 rpm normal driving, with the occasional race, like a few times every couple weekends. So maybe 4 times a month. Normally I wouldn't even be boosting very much at all. I would eventually change to a t2 tansmission, since I'm planning mods to get like 250 rwhp. What about the rear end?

Don't bother trying to keep me from going turbo, (it is a GTUs) I've made up my mind. The only way to get the power I'm looking for is a bridgeport, and that's just too extreme.

for the price of a used TII tranny, why bother if you are going to go thru the trouble of swapping engines and ecus?

the answer is it depends. if you are dropping the clutch and drag racing it it wont last very long. if you arent dumping the clutch, and banging gears it should last a long time, the miata guys run 11's on the same tranny design. the na tranny shifts better and it lighter too



mike

realistically you should just change the drivetrain and rear end if swappin the engine



ive seen people just having to go through the trouble of doing just a short while after the swap, but then again alot more expensive

as mike says depends on how you use it, in your case if you don't drop the clutch you should be fine. If you ever do swap to a t2 tranny get the driveshaft and rear end too, they can handle way more power and you can't mismatch the t2 tranny with the n/a rear end unless you want to make custom stuff.

This is the new craze huh? Everyones doing it now. Whats next?

well i guess im not going turbo then, ill be the only na left lol. ill just build the na up really good and then save for an fd :yum:

i'm keeping my gsl-se na, i almost went turbo with it



mike

I used to be a hardcore na guy but the turbo bug is saying to stray to the dark side. https://www.nopistons.com/forums/pub...#>/biggrin.png

I'm staying N/A, I know my car won't be as fast as my friends heavy street port Turbo II, but I think I can stay close once I build my engine, or so i can hope. :yum:

Ummm, the bell housing on the NA tranny won't bolt up to the Turbo block.....

I have heard several people using the n/a tranny on jspec blocks... hm...

yes it will, the rotary berrhousing is the same from 74-02 (except fd and cosmo automatics), its the flywheel diameter thats different from turbo to na



mike

Having seen the two tranny's side by side I can tell you the NA bellhousing is smaller then the T2 bellhousing.



I'm not saying it won't work, but it doesn't look a "plug and play" setup to me.

They bolt up fine, same bolt pattern :squint: . I have a jspec in my n/a with original driveline, I make sure not to be under boost during launch but I do drag race it, has held up fine so far. And I race alot, a couple times during the week and as many as 10-15 races during the weekend! Heh, when they will race me that is. https://www.nopistons.com/forums/pub...#>/biggrin.png

Like I say never tried to bolt them up, just seen them side-by-sade and know the bellhousing look diffferent.



Thanks

Phins, I have Bolted my Pineapple Miata Tranny up to my TII Block IT WORKS!!!!

You just need the proper year NA flywheel andd istarter and its a bolt-in



John

**** that is what I need a miata tranny, that would rock.

Its a NA case with Miata gears inside. GUARENTEED TO HANDLE 300 HP!

300hp ain't much https://www.nopistons.com/forums/pub...DIR#>/wink.png

jut superchrage your car for that cost