KompressorLOgic

iTrader: (6)

well i got pretty bored, so i desided to try one of these turbo N/A setups that are so controversial....

i have a 86' sport model rx-7 that is totally striped, no interior, i bought with about 85% of the interior gone, for 100 dollars with a bad motor a yr or 2 ago ,

tore down the blown motor sold parts, got my money back and bought another motor with 170K on it for 100 dollars, drove it for a while, its got 200K now,( i know yikes!!)....

well the plan was to use t2 electronics and t2 manifolds, but NA block, and modified NA harness, na drive train, which ment i need to port match the manifold,or make spacer, since i had an extra s4 t2 manifolds around i desided to give port matching it a try,


heres a few pics!



[IMG]
i had my dad weld fill in part of the manifold so i could grind the ports out right,

only took a couple pics i forgot to take one of hte finished product, it looks much better than those pics though.

now we needed to fab something up for the oil system for the turbo charger, as well as a few block off plates, i took water from before the heater and back to after the heater.



this may sound like a bad idea, but i didnt want to remove the oil pan or front cover or anything for that matter, desided to tap oil from the oil pressure sender, ( my stock gauge never worked anyway...) , then my return like replaced the oil level sender( which none of those warning lights seemed to ever work either, go figure....),

so i know i have no way of knowing pressure or oil level which is a bad thing in an rx-7 i know!!, i plan to T in a aftermarket oil press gauge later this week.


i desided to use the NA harness, and i extened the wires for the BAC, and tps, i also did emissions removal and got rid of the whole rats nest,
then i took a couple pics of the engine allmost completed,



i know the wiring is butchered!, i got the car origionally with the harness cut, so i spliced it back together....

now for other mods and stuff i did
i have installed,

Rtek 1.7 /w 720 cc secondarys
s5 turbocharger with ported waste gate
walbro 255 pump
3" cs exhaust
TID mod
boost gauge
A/F gauge narrowband, till i can afford a wideband
SAFC
going to put my t2 hood on tommarow morning,
waiting to get money so i can do the front mount setup, should have that done in a couple weeks....
now i know this motor wont last very long, but i plan to put a rebuild ported t2 motor in the car, with my t2 rear diff, trany and driveline, Later this yr, to use as a drag car, using my s5 manifolds, and a different turbocharger.

KompressorLOgic

iTrader: (6)

i just got itn running at like 6 pm today( well it was sunday) , and i desided i better call it quits for the night, and test it more tommarow so i can check for leaks and ect, better in the day light,

whitefcdrifter

iTrader: (1)

your crazy ryan lol

SonicRaT

iTrader: (6)

What's controversial about it? It's cheap, easy, and works well.

Cool to see more turbo 6ports!

misterstyx69

iTrader: (142)

can you do mine now?..you must have the technique down to a science now!!..GOOD SHOW!

matts86fc3s

i would thing turboing and n/a would be better, higher compression and more intake ports and all.... but everyone says otherwise

SonicRaT

iTrader: (6)

In some areas it's better, in others it's not. The number of intake ports doesn't really have anything to do with it, it's the size of the ports that really matters.

rotary downshift

actualy the only reason there is so much contraversy is because the guys who say 4 port is better with lower compression are the ones running crazy boost the whole i dea to the 6port turbo was to make a more streetable turbo car .. 9:4:1 isnt that high of compression there is still a rathjer large margin for error wehen it comes to tuning .. its all opinion and application at this point

SonicRaT

iTrader: (6)

Well, the problem is most people who say there's some problem running it or it's dangerous and will blow up a week later have no experience. They also don't understand that with higher compression, lower 'boost' psi results in higher power output, but they're so stuck on their F&F ways of thinking psi is the only gauge of power. I've eeked out 20psi on 9.7:1 rotors with a gt35r and held it together, and i've seen lots of people blow apart 9.0:1's trying the same thing. In the end, it's all about properly picking the parts for your application and most of all proper tuning.

Carzy Driver

nice job ryan, looking real good. also SonicRat, very well put!

KompressorLOgic

iTrader: (6)

well drove it around a bit today,it runs, but im having a pulsing idle when warm, from 1500-1300 over nad over...... gonna check tps and some other stuff tommarow... then also

i got my A/F gauge wired in, its only a narrow band but its better then nothing, i tapped into my ecu power wire for my SAFC and A/F and the lighting for the A/F gauge.... which i think was a bad idea

im getting the 3800 rpm hesitation, and its so bad that my SAFC resets when it happens....

i think ive over loaded the ecus power wire.. and when the secondary injectors kick in it creats a voltage dip enough to turn off the safc for a second

going to rewire all of that to avoid the ecu's power supply , and im gonna add a few large ground wires tommarow see if it helps.


also the turbo i used was from a blonw motor,and after looking at other turbos from blown motors, i think the exhaust fins got cliped by some apex seals.... spool is a bit later than on a normal turbo II, but its still boosting fine
seem to spool up/reach the 6 psi, at about 3500 rpm or so... i think ive got a bit of an exhaust leak before the turbocharger also it sounds like.... ill have to buy a new gasket..

KompressorLOgic

iTrader: (6)

turned out to be a grounding issue.... the ring ground on top of th engine didnt get tightend down, and i added a few more. rewired power to ignition also. runs good besides a bit of an exhaust leak... and a pulsing idle....

gonna adjust tps and check some other stuff,or something... thermo wax might be adjusted wrong i dont know.... idles down to normal rpm 800ish, while warming up/allmost warm,

then once fully warm, pulses 1300-1500 over and over and over...

drove it over 200 miles so far!! gas milage seems allright, same as my other t2 was though.
hitting about 5 psi right now, pulls good for that low of boost.

Carzy Driver

good to hear

groll69

great job on it. i hope to at least supercharge my NA here soon.

misterstyx69

iTrader: (142)

very informative,glad to see a thread that explain stuff and not an "so I put on a bigger turbo and boom",what did I do?..thread..gotta hand it to ya Kompressor ...sort of makes me want to do it on my N/A...but right now i got 2 cars..1 for sale ,plus my winter beater..(no room to do stuff)..I hope you post up with the stuff you used to convert over ..you made it look so easy!

iceblue

This thread sliped by me probably b/c I pass up most the 6pt stuff. Anyhow A+ man I realy like seeing when someone just says I feel like going and doing something and they slap something together that works and no time at all. It just shows how easaly it can be done and your current knowledge.

Realy great job man.

88rxn/a

iTrader: (6)

any new updates??
6lbs. at 3500rpm. boy my exhaust leak is worse than i thought.. mine starts at 2,000 and hits full around 4,000... of course thats a good thing for me since im still using a stock tII ecu till i get it sent to rtek. my manifold to turbo has a horrible exhaust leak that souonds like a old muscle car on crack...i cant even open my sunroof without the inside of my 7 smelling like exhaust.. when are you going to introduce more boost??

2RICE4U

when its all tuned you should get it dynoed

SonicRaT

iTrader: (6)

Hah, with a proper tune and setup, you can get full boost prior to 3k rpm

Drftr_101

yeah man could you give me a parts list of what you used and how you did it I would greatly appreciate it my convertible is missing a blow off sound no what I mean

88rxn/a

iTrader: (6)

with a front mount???
tell me about this setup
id love 10-12lbs. at 3,000

SonicRaT

iTrader: (6)

I did with my greddy front mount, my MT would see whatever I set my boost controller to right around 2900-3100

elnots

I was wondering, (found this thread on search)

Can you use the N/A engine harness when switching 88 N/A engine to an 88 stock turbo engine?

You mentioned minor modifications. What were those?