pimpinthe7

ok i have a n/a 1991 gxl and i want a turbo what do i need i want to keep the motor because i have 25000 miles on it and it runs strong now but i want a turbo and want to push 250hp or close to it and would you need to change exhaust systems because right now i have an apexi n1 exhaust would i need to cahnge that? well for all the people outtheir can you please give me a list and a price ballpark thank you ..
peace out

rx7fct

first you need to convert a couple stuff from your gxl,
engine, ecu, tranny, driveshaft, halfshafts, rearshafts, LSD's, i had the same plan, and when i did a rough and 'vague' total, i got around to ~$2500, but that was with just searching the forums/shops/etc for the different parts, im sure people here can give you a cheaper price.

ultrataco

iTrader: (2)

this may be of some help: http://www.aaroncake.net/RX-7/projecttina/index.html

blwn rtr 89'

iTrader: (5)

the search feature work equally as well.

complete sentences work wonders to.

youseemtowanteveryoneelsetodotheworkforyou

boostedfc3s

iTrader: (2)

^

The APEX N-1 exhaust worked for me. I had it on my N/A and then swapped it onto my TII. I think there is only one part number for the FC's, not an option for turbo or N/A. Welcome to the club.

pimpinthe7

no i want to keep the motor . and y would i need to change the tranny?

KompressorLOgic

iTrader: (6)

you can do a NA-T setup..... ive done it and am still running one.
the cheapest way to do it would be be basicly pertending the na block was a t2 block and bolting everythign t2 onto it and control it with t2 ecu and electronics.
SO heres wut u need!


from an s5 t2 u need..
complete intake manifold set, injectors, intercooler, ECU, air flow meter, boost sensor,t2 throttle cable, a t2 fuel pump or walbro 255, a turbo downpipe, the turbocharger and manifold. you need a t2 hood or a front mount intercooler also...

now the custom parts.. u must create/modify

You will need to get the s5 g2 intake manifolds and port match them to fit the 6 port na block! the ports dont line up the same turbo has 4 ports na has 6 ports, u need to do some filling in ie, allum weld certain spaces in, or jb weld the spaces in.
after the port matching...
then you need to tap an oil drain into your oil pan or front cover. then custom make high pressure oil feed lines as well... then creat some coolent lines to run coolent to the turbo also.

you also may need to modify several wires on the NA harness, but you can use it!

now since the engine runs a higher compression ratio than the stock turbo motor. id recomend an SAFC or something to add some extra fuel in as a "safty margin"

if uw ant to run more then stock boost levels id recoment 750cc secondary injectors and using the safc to control them correctly...

also the na clutch is somewhat weak, u may want an upgraded clutch...

KompressorLOgic

iTrader: (6)

hers a pic of doing the intake manifold... this isnt done but gives u an idea what kind of work u will be doing NOTE: ive allready welded in the ares u had to fill, so u cant see where im talking about but part of the area where ive drilled out for the port has a hole in it where u need to fill in about a 2"x1"by .5" deep area,

near top of pic u can see the NA engine to intake manifold gasket, and then u can see me tring to match the t2 manifold to the na ports.

i didnt take any pics of my oil feed and drain, but what i did, since my oil gauge didnt work anyway, was i taped into the oil pressure sender and used that as a feed( it is a sort of unusual thread type! so beware when buying a fititng for it). and then my drain was on the side of the oil pan.

ohh another thing i forgot, U may need to fill in the ports that are below the intake ports, they are for emissions like egr or somethin and might be diff between na block and t2 ( they were on the s4 na to s4t2 and i had to fill them in)

pimpinthe7

sounds likle mad work wouldnt a swap be alot easier take the n/a out sell it buy a tII and call it a day?

KompressorLOgic

iTrader: (6)

it is a deent amount of work and its easier to get a real t2 motor... ive found that doing a na-t setup is only more cost effective if u have most of the parts laying around but no t2 blocks( which i did in my case)

id recomend buying a long block t2 engine from a reputable place or person with ,ecu ,afm, and electronics, and throttle cable. then u can bolt on the NA flywheel and clutch stuff, and use your na drivetrain( t2 stuff is different size and wont work unless u get trany driveline, rear dirf, half shafts, starter, slave clyander ect...)

Then !! keep your Na engine as a spare.. that way if the used engine u bought fails early u have everything laying around to do a na turbo on your low milage engine!

pimpinthe7

amazing ..your so smart...i wish i thought of that one first ..list of things i would need..
tII motor-tranny
tII wire harness
tII throttle cable
tII ecu
boost gauge
and then just a bolt right up?
or is their different mounts ?
sounds alot easier?kinda? still alot of work but will way worth the effort.
plus i can always swap the turbo if i wanted
jw how many psi is a stock turbo putting out?

KompressorLOgic

iTrader: (6)

same motor mounts...

if u want to use the t2 trany u need a custom driveline to go to your na rear diff... or a t2 driveline, t2 rear diff, and t2 half shafts. u also need t2 slave cylander and starter.

cheapest method would be use an na flyhweel and clutch setup.. and use your na drive train... its weaker but saves money.

stock boost level is around 6 psi

pimpinthe7

ok so basicaliy i bought the wrong car...hahaha no im jk...ill see what the money tree lets me do.(gf)