So i planned on buying a TII 13b but i ran across a deal today a 89 n/a 13b with the n/a trans and the motor has 100k miles needs rebuilt but came with coil packs alternator water pump throttle body and sensor both upper and lower intake oil pan primary and secondary fuel rails all for 100 bucks. I still would like to turbo it, looking for suggestions on either buying a tII intake and porting it out or buying a "re" intake and using that any suggestions on what else I will need to do..also currently looking for a tII shell

thanks
DK

 

Cant pass up good deals!

 

thats what i was thinking plus this is my first rotary ill be taking apart or anything even if it doesnt go right its only 100 bucks

 

First things first, sell or trade those high compression na rotors for the lower compression turbo ones, and get yourself the four port end housings. The na center iron is decent at best but may as well keep it. Next up is the turbo manifolds to match the 4 port irons. The center ports MAY require port matching, I am not sure though. Also, may as well invest in RA Super Seals, they hold up well in high-boost cars. Just make sure the tune is right though, a bad (lean) tune will always cause detonation and end with bits of apex seals flying out the exhaust.

 

Or turbo the high comp rotors

 

^
Nothing really wrong with that, so long as you can support it with enough fuel and tuning.

 

I see you decided to post on here!
I agree with schaft and think you should use the higher compression rotors and do a good tune.
If you get a running rx7, just build a 6 port turbo out of the engine you bought. Aaron Cake has a good guide for doing this as well as rebuild videos. You can take your time and do the best of everything and have a good car to put the engine in when your finished.

Here is the guide
http://www.aaroncake.net/rx-7/naturbo.htm

Good luck!

 

MAT! didnt know you were on here, yes Ive been talking to my friend "boostmaniac" and think weve decided to do the n/a engine port out a tII intake and turbo the n/a motor i purchased. ive seen a 13b TII on 12 lbs is about 200whp and a 13b "aux port" like aaron cake has makes about 60 more wheel horse power on the same psi so I think thats the route I will go..Still will try to find a tII chassis with a blown motor just incase i wanted to rebuild that one and bridge port it (as back up) and use the aux ported 13b

 

Yeah I have been on here since I got the Rx7. For a street car you probably want to go with a bridge port or half-bridge. The aux ports just don't last very long from what I have heard.

 

what would be the difference between a 6 port turbo and a aux port? the 6 port the re intake and a auxport is tII intake ported

 

Nevermind I was getting PP confused with aux port lol!
I was like why the hell would you run peripheral ports on a street car.

Anyways we probably won't get the jams painted this weekend, so I'm almost 100% sure that you will be able to come check the car out on sunday.

 

go with boosstttt

 

Seriously, it's great to have aspirations as such, but building an NA-T is more than slathering on epoxy and bolting on a turbocharger. You HAVE to have the fuel system and engine controls to support it. The 460cc injectors will not cut it, and the 550cc injectors from the TII aren't going to fit the bill either. You're going to probably need 2 sets of 720's. Then you're going to need something to control them, since shoving larger injectors in the mix with a stock ecu is going to make it run super rich when you don't want it to. Plan this sort of stuff out now. I like to use an Excel spreadsheet to figure out what all I need and how much it's all going to cost. It really puts everything in perspective. Last, but definitely not the least important, read all you can about the conversion.

 

The easiest/fast/cheapest way to turbo is T2 upper/lower intake manifolds, turbo and manifold, turbo maf, turbo injectors, and some sort of ecu change or safc.

 

luckily for me i found someone that lives 2 towns over who is doing a na-t build and using the turbo 2 intake and is porting it out so i will get to see how that is done like i said im buying a tII chassis so maybe ill get one with a blown motor and be able to swap housings and such also buying a stand alone ecu off a buddy in 3 weeks or so whenever he decides to sell it. so that will settle the maf limiting me to only 400whp and ill be able to adjust air fuel mixtures accordingly to the tune i go with.

lol its okay, i was confused by what you said you almost crushed my dreams haha ill see you SATurday for the cruise.

yes that is what I am doing its the easiest and wont have to fine 13b-re parts...now my question is what is a good turbo to go with i have thought about a gt42r but its 1400 and i rather not spend that much on my first build any cheaper/reliable journal bearing turbos you know of??



thanks guys for the input and suggestions!

 

DK that's my NA-T build your coming over to check out lol.

 

Ur not guna get a reliable turbo cheap, unless its used then it'll be risk anyways, try a gt35

 

lol everyone is on here! I saw the Louisville on your location and I was wondering if it was you
well the gt42r is 1100and the gt35r is around the same price, didnt know if there was a journal bearing turbo that was good for $500 to $700.

 

Just sell what you got with a profit and buy a TII..

Will be the better option in the long run anyday

 

im going to buy a tII with either a running motor or blown motor and do something different with that one. Its my first build/rotary I know something will fail i dont mind spendin a couple grand then needing to rebuild, i figure a n.a-t will get me fimilar with port work so when the day of a bridgeport comes along (oh and it will) i will be ready and not scratching my head.

 

n/a-t all the way!

When my original 87' TII engine blew I picked up an 87' n/a block locally and all I had to to was modify the LIM, swap front covers, run a custom oil line T'd off the oil pressure sender, and run coolant from the nipple on top of the TB.

I only drove it for a day (before I discovered the engine had bad coolant seals) but it felt MUCH better than the TII engine. With the 8.5 rotors it struggled cruising below 2500 rpm, with the n/a-t I was cruising at 1900 w/ no issues. And boost came on QUICK, I couldn't give it more than 30% throttle w/o it trying to build boost.

 

That is awesome I am getting more and more excited as this "build" plays out. I will post pics on this thread when I get a LIM and the machine work is done along with the turbo,stand alone ecu etc.

 

we talked last night and I'm doing the 6 port na to turbo as well lol ordering the fmic and piping and hopefully a s4 t2 map sensor as well

 

congrats on the buy man have fun an let the rotor gods be on ur side

 

bought a s5 rust free willwood brakes black leather interior red ext. for $200 next buy is turbo 2 engine and trans and NEED TO FIND A TURBO 2 diff. local