1985GSL

iTrader: (4)

I have a 4 port 13B and am starting my turbo project on wednesday. As of right now I have second gen intake mani (upper and lower) along with throttle body exhaust mani turbo wiring harness and a Stand alone ECU(megasquirt). What else will i need? i will probobaly have to make some kind of adapter for the manifold to fit on my 4 port right? should I just buy a core TII motor? can i use non-turbo second gen irons? when do I tap the oil lines? If you have a turbos on rotary engines for dummies page I can read that but the search wasnt very helpful.
Thanks
Charlie

rolfs_7

did u search?? if not do it.

1985GSL

iTrader: (4)

yeah i did as i said in my post. noone posts anything about 4-ports.

nick812

I know what you mean i did a search on something yesturday read 15 treads got good information but could nott find what i was looking for. Any ways to try and help you out a bit. All TII are 4 port. Easy enough for you? I think i seen where robert from rotary shack had a 12 front cover taped not sure if he ever sold it. Any way i hope this helps and good luck and dont forget to post some pics of the swap.

1985GSL

iTrader: (4)

i know but i have 12a irons is what i am trying to get at. Sorry for not being descriptive enough. I think the bolt patterns are different for the intake manis?

nick812

Yes they are you can mod a TII intake or make an adapter. I think mazdacom.com had blank 13B intake flanges. Would make it easier to build a adapter. I assume you are going EFI? If not the older 4 port 13B is almost the same just need to do a little porting. Sorry I was just tring to give some input on what i know.

trochoid

iTrader: (6)

My guess is you will need to make an adapter plate to mount the TII LIM to your hybrid block. Are you using SE housings, or the older 74-78 ones? I don't know how far off the ports and bolts are going to be. It might be possible to have a bit of tigging and drilling done to mate it up.

1985GSL

iTrader: (4)

the housings are 13Bs i think you meant irons. The irons are from a 85 GSL. And yes EFI

trochoid

iTrader: (6)

No, I was refering to housings. I assumed you are using SE housings, but the 13B was first offered from 74-78. The older ones are getting hard to find.

1985GSL

iTrader: (4)

I think they are actually from an 86 but not positive. How do i tell and why does it matter? Sorry about the misunderstanding

trochoid

iTrader: (6)

In 86, Mazda moved the coolant seal grooves from the housings to the irons, you can't mix and match 85 and older with 86 and newer. If that was possible, many 2nd gen guys would be using our 12A end irons to build 4-ports.

If your housings are 86+, it would be better to find TII end irons and exhaust sleeves to simplify your build and matching the intake.

rolfs_7

let us know how it turns out. what fuel pump will you be using?

1985GSL

iTrader: (4)

well then i must have -se housings. My engine is together and running NA right now. so should i keep it like this and modify or buy a core motor? how much modifying will there be?
Thanks for all the help BTW. Where in the front cover does the oil line go then that is to the turbo? Where does the return go? Where the oil pressure sensor is?

1985GSL

iTrader: (4)

Not sure yet for the fuel pump. any suggestions?

renns

The bolt pattern is very different on the early engines. I adapted a TII lower to an RX4 13B, and it required a fair bit of cutting and welding on the TII lower to adapt it properly. I ran with four top-mounted injectors, but could never get a decent idle quality with the injectors up so far away from the ports. It pulled very strong above 3k or so, but loaded up badly at low rpms, and would eventually foul plugs and stall at idle. If I were to go that route again, I'd put a set of primary injectors where the oil injection ports are located in the primary runners on the TII lower. This is much closer to the port, and I suspect would produce better results at idle.

trochoid

iTrader: (6)

Interesting injector mod there renns. Since he is running an SE block, he can use the stock center iron injectors for primarys and the stock TII secondarys.

1985GSL. I can answer most of your questions, but it sounds like you need to do a bit more reading up on TII swaps and differences in the engines through the years. Not trying to be a butthead, but you are getting down to some of the more basic questions that you should already know before contemplating the swap.

There are several options on fuel pump, turbo supply/return and whether or not to mod your SE engine or go with a full TII engine. Study up, the the choices on which way to go are your's. The info you are looking for could fill a small book, maybe someday I will write one.

REVHED

I'm running an "early" style four-port 13B block with my turbo setup. I street-ported it and rebuilt it with clearanced and slotted TII rotors, competition oil pump, increased oil pressure and the oil jet mod. I used a SE/12AT type centre plate for the primary injector bungs.

To mount the TII lower intake I purchased an adaptor plate. They are readily available over here but if you can't find one it shouldn't be too hard to make for a competent machine shop.

The turbo manifold will bolt right up but I'm not sure how much clearance there will be between the turbo and intake when you factor in the thickness of the intake adaptor. I've used a custom turbo manifold due to the rhd steering box being in the way.

PM me if you want any more details.

1985GSL

iTrader: (4)

No Trochiod I know what you are saying and I understand I also asked in the first post that if you knew a good place to read im all for it. I am 17 and know my **** about NA because i did this one myself rebuilt it and everything. I even did all my bodywork and everything. I bought a turbo kit that has some of the basic stuff done for turbo prep but i basiclly dont know that much about turbo kits. It has the stuff i listed and came with a fuel pump but im pretty sure its not big enough. I will try to post some pics up so i can get some of the questions answered but thank you guys for all the help.

trochoid

iTrader: (6)

Very commendable for 17, my hat's off to you. I am also venturing into my 1st turbo project this winter with a TII build for the widebody. Can't be all show and no go. LOL I have been reading everything I can for the past couple of years on turbo swaps, still don't feel like I know enough. But, it's time to get my hands dirty and do it.

1985GSL

iTrader: (4)

yeah i have read quite a bit is just hard to retain if you arent doing it at the same time. for me at least i read like 300 pages about megasquirt but i still dont feel like i will know how to use it. as for the pics i cant figure out how to get them on here. So where is a good article or book or something i can read and really learn as much as i can A-Z?

trochoid

iTrader: (6)

I haven't limited my reading to only the Club. There is also nopistons.com, the ausrotary.com site, Reted's site, FC3Spro, it think, or something like that. Reted's site has a staged layout for TII upgrades along with fuel mods/parts. Steve84GS just recently posted a list of the wiring changes need for the stock ecu swap.

As much reading as you have done on the MS forum, I'll probably be asking you questions when I get to that point on mine this winter.

1985GSL

iTrader: (4)

yeah im not asking about just threads here, cause ive done some reading too i was just asking for any like those. I will have to check those out. im uploading pictures right now from photo bucket. what size doi you usually have yours? As far as MS i did all the reading on their website www.bgsoflex.com i read almost every article on there. What is reteds site? and i have a harness for the MS so i will use that.