theone61636

Decided to share the fruits of my labor. Car is a bone stock 85 MR2 with 208k on the clock. Decided to do a remote mount turbo build on it for something to do in my free time. Took a month from start to finish and so far it's running well. Still have a few things i need to do to wrap it up but it's running like a champ and pulls like crazy.
Parts:
T25 from a 97 Eclipse
2g BOV
Precision 39mm Wastegate (set up for 7psi)
Vortech 12:1 FMU
Shurflo Oil Scavenge Pump with -8 lines
Misc Piping and couplers
Innovative Wideband O2 Sensor and Gauge (yet to be installed)
Total cost so far ~1475

Despite all the naysaying, I have successfully used the oil cooler line out as my oil feed. I removed the bypass valve in the sandwich plate and have great oil pressure and flow to turbo. Overall oil pressure is a little lower than stock once the engine is up to temp but not dangerously so. I'm using -4 line for the feed and spliced a 1/4" needle valve into the line to regulate oil pressure down so I don't blow oil past the seals.
The turbo had some of the typical cracks around the wastegate, so i cut out the flapper and heated the turbine housing up to 500* for about an hour and MIG welded the worst of the cracks closed. Thank you Garrett for using high Nickel content in your housings and making this possible. The wastegate is situated off of the original internal wastegate hole and returns downstream in the exhaust. The oil return has a one way valve in it to prevent return flow once the engine is shut off.
Right now the PCV is vented to atmosphere as I'm deciding on whether or not to do a catch can or a filter. the BOV is giving me some issues as it is not fully seated at idle (i think my engine pulls more vacuum than the Mitsubishi engine it came off of. Right now I have a filter material ziptied around the port to provide enough of a restriction to the airflow for the car to idle correctly. Eventually, I'll either get a different BOV or plump the air out back into the intake.
That's about all I can think of for now, so onto the pics.

theone61636

Downpipe


Initial exhaust and Wastegate plumbing


Sideview


Completed exhaust

theone61636

Turbo (yes some oil dripping is there from when I forgot to disconnect the PCV hose...this was fun as the dipstick shot out of its hole and sprayed oil everywhere)


Another view of the turbo


Charge piping and oil pump


Engine bay


Last pic (for now) showing ground clearance

theone61636

So far the car runs great. Before boost, the car drives as it did stock and idles perfectly. It's DEFINITELY faster than stock and the sound of the turbo spooling up is amazing. Hopefully, I can get the O2 sensor in this weekend so I can see how rich/lean the car is running. Eventually, I plan on adding meth/water injection but for now, other than some small misc stuff, I'm done.

anonymous

This is a pretty legit setup lol. I like it.

I have a d16a1 (dohc 1.6l honda engine) with a 14b and an fmu. With the 12:1 disk I was maxing my wideband rich (below 9.9:1) at 7psi. A 10:1 disk put it in the mid/high 10's and a 8:1 disk in the mid 11's. Once you install the wideband you will probably want to order the fmu disk kit so you can "tune" the fuel delivery.

On a car with a mafs (or a pos flapper like you have) you should recirculate that bov. It will idle funky and stall out when you come to a stop otherwise. You are venting already metered air and it causes an excessively rich condition. You can crush the bov to help it seat at idle, but it can negatively effect the opening of the bov. I recommend recirculating.

If you can get your hands on a 14b for cheap, it is a pretty good upgrade from the the t25. Most people only talk about compressors, the real upgrade for the 14b is the turbine side.

I wish you would have never shown me this, now i want an mr2 to do a similar setup.

We're Wolf

Awesome build!
i have a few questions
so do you not need to get a different manifold or anything because your are using your factory throttle body and you are just taking piping exiting the turbo to where the intake would be?
and a intercooler isn't NEEDED but a good option?
and is the most time consuming part of this is the return line for oil scavenger for the rear mount and piping to your throttle body/intake?
i am looking into this for my 2006,v6 mustang anything i need to know about?

theone61636

I didnt need a new intake, i just used the stock one. As for the intercooler, i dont really think it's necessary unless youre making a lot of power or if u race a lot. On cars where the engine is in the front you have even more charge piping that will assist in cooling down the charge. I persoanlly didnt choose to use an intercooler because of space restrictions and i am going to use methanol injection to help cool the charge. As far as time consumption, id say the most time was spent planning everything and then waiting for additional parts to arrive once those initial plans proved to not be the final solution. The mock up and welding of the pipes took the longest as far as construction. As far as what to do for your v6...research. i can guarantee someone has done it before, so find them and learn from them. Plan as much as possible and buy good quality stuff.

We're Wolf

ha i been looking but not a whole lot of people go for turbos, or if they do its not remote...
i am just looking on criageslist for the right size turbo and i will start looking for piping..
any good deals for piping and hoses? (sorry if i am asking noob questions)
with a 4 liter engine do you have any recommendations on turbo size? so far i am looking at a t-3/4 and ones from f350 diesels and other trucks, sorry to bug you lol