The Wildchild

iTrader: (1)

So I'm about to start my first full engine build, and im looking into buying some housing and rotors. I have heard you can use the T2 housings on a NA the only difference is the "wings or baffles" inside the exhaust port. What are the pros and cons of using T2 housings? And will all the N/A hardware bolt up an have all the proper bolt holes and what not or will stuff need to be tapped or what?

I'm planning on building this engine for a beginner drift car, and I will be doing the large street port for the 6 port and the large exhaust port from pinapple racing.

texFCturboII

iTrader: (17)

Yea, they'll work just fine. In general, a 13b housing is a 13b housing. You will have to plug up the water jacket on the rear housing. There is an outlet there that is meant to feed the turbo via the LIM of the turbo 7's. Other than that you should be fine.

SirCygnus

iTrader: (1)

it will be plugged if he uses an exhaust gasket.

texFCturboII

iTrader: (17)

Yea, I guess it would.... didn't think of that. I've always used N/A housings on turbos, not the other way around...

Puck

iTrader: (1)

Just so you know... the N/A is louder with the T2 housings, due to the elimination of the diffuser/splitter. With a decent exhaust, you won't notice it, but if you happen to run it uncorked... holy hell!!!

RotaryEvolution

iTrader: (30)

confused, don't you LIM gasket? the n/a's had no coolant ports so when you bolt the LIM to the block the passages are blocked. the only reason to use the freeze plugs in the turbo housings is to eliminate the possibility of coolant leaking by the gasket if you don't use the o-rings and sealant.

since 19mm freeze plugs aren't always easy to find a rubber cork can also be used.

rx7fcfc

iTrader: (1)

i will be doin the same this summer

sharingan 19

iTrader: (16)

How difficult is it to remove the N/A exhaust sleeves to use n/a housings on a turbo engine?

The Wildchild

iTrader: (1)

I have heard you can press out the exhaust sleeve and press in T2 sleeves to remove the baffle, But I would see using a drill and a nice dremel and some time you could just cut the wing or baffle out pretty easy.

Are the exhaust ports the same size or different between the two being stock.

RotaryEvolution

iTrader: (30)

either install a screw into the roll pins and pull them out or dab on a spot weld onto each end and pull them out with vice grips.

installation is as easy and setting the sleeve in the housing and hammer the pins back in. remove the sleeve spacers for the TII sleeves, they're only required for the non turbo sleeves. i don't suggest drilling them out because the pins can become loose and the sleeves can wobble and warp if they do.

MadScience_7

Cutting out the baffles in the sleeves seems like an easy task, but those damn things are made of kryptonite or something. I've started trying to cut one out, but soon gave up and bought TII housings instead. To block the coolant ports, I went super ghetto for some reason and JB welded pennies into the holes. Now I seem to have a very slow seepage of coolant through the paper gasket. No danger to anything as far as I know, just a little mess and a reminder of what happens when I don't do things the right way the first time.

Gurew

iTrader: (4)

lol always do things right the first time...you never get ahead with the ghetto route

john ward

iTrader: (7)

I think on the s4 engine i built for my 85 and used s4t housings i bought freeze plugs from pineapple for a few bucks.

JustJeff

iTrader: (13)

There are threads about swapping sleeves.

https://www.rx7club.com/2nd-gen-archive-72/removing-swapping-rotor-housing-exhaust-sleeves-401058/

Bud, I'm glad I saw your post. Got a question I'm gonna PM you bout fabbing up something.

Gurew

iTrader: (4)

haha sweet, pm me and ill shoot you my cell number..easier to txt me

john ward

iTrader: (7)

here they are

http://www.pineappleracing.com/rotor...ssageplug.aspx

jjwalker

As everyone said above, you can remove the sleeve and replace it, or you can use a plasma cutter to remove the baffles.

Hazard15301

iTrader: (5)

Iconel, actually. If you're gonna cut it out, be prepared to use up a lot of grinding stones.

jjwalker

Like I said, plasma cutter!

PvillKnight7

iTrader: (16)

I removed the diffusers from the N/A sleeves before with an end mill but I didn't use them because I thought the hole left in the sleeve was too big.