PDX's first Turbo 91 Mocha

[91PDXmocha]

Here it is , the first part of my Turbo SHO build , this is a cheap homemade build obviously, that will be getting upgrades probably non-stop til I feel the car is where I want it to be. So here it is started it up at 10:11 pm . Will be prowling the greater portland , Vancouver area.

Will do mroe info later but for now. cheap turbo 63 trim 60 ar, 2.5" up-pipe & downpipe , stock fuel and maf . Have a set of 30# injectors waiting and will be getting a fuel pump and FPR and tweecer RT asap. its corked at 4 psi til I upgrade the fuel.
once i get the fuel Ill be changing over to a front mount intercooler, with 5 psi there is no need.

I have a small exhuast leak to fix and ineed to get a proper drain line, my HM one leaks but i really wanted to start the car up before gettin the ****** at work monday. also need to look up how to run all the vacuum lines I honestly just put them all onto somthing for now so i could start the car and find out what i need to work on tmrw and order for monday. Im open to any advice, and oh yea bring on the HAterzz. I havent welded in 6 years, I just wanted a starting point. I have another 3.0 all cleaned up with black theme and spare mtx ready to drop in when this one pops as well


Evan

 

[Toolman]

First!

 

[SHOspazz92]

Nice.

-Sam

 

[Toolman]

Cool build! How much boost? What size pipes? What are you using to tune? Fuel upgrades?

Don't sweat the welds, they don't have to pretty as long they work. And as far as heat management goes, a turbine blanket will do you a lot more good than some wrap around your charge pipe. I am very very pleased with my turbo blanket. After getting all my fluids up to temp, and some spirited part-throttle runs, my engine bay is hardly warmer than a stock SHO. I have the dp wrapped, but also have a shield under it to protect my wiring harness, and then the blanket on the turbo. Besides better performance from your turbo, the protection you give to the rest of the engine bay will increase longevity of all hoses/wires/loom/etc. Also, do you have a way to monitor IAT? Would not be a bad idea.

 

[shopartsnw]

Evan,

Good job on jumping into the boosted game. Obviously there are things to refine, but you are taking the intiative to build on your own, so no one can really throw rocks at you.

One comment from the pictures. It looks like your BOV is after your MAF, so you are dumping metered which will really throw off your A/F ratio. If you want to keep the BOV where it is, I think you need to pipe it back to the turbo inlet so it recycles. The other alternative is to move the BOV upstream right after the turbo and then put the MAF between the BOV and the TB.

I will keep my eyes pealed for a 91 Mocha around town.

Mike

 

[91PDXmocha]

Mike,

Oh im sure you and Kurt will be seeing it. Ill need some parts and def need more advice. Yes the bov is after but ive heard its managable . Once I figure out which way im going with the MAF set up im going to decide what to do. I might recirculate it if it becomes a bit problem before I get the proper upgrades.

Big thanks to Kurt and Mike and ShoSource, and scott( strings ) and all the great info on here on SHOForum Thanks !

Tim , the plan is gettin it set up to run a reliable 10-12 psi on DD status in the near future, but you know how plans change.
YES im picking up a turbo blanket on monday as well .

 

[91PDXmocha]

anyone wanna throw out how they are running the vacuum and pcv lines ? I got some info from Scott earlyer but the more the better thanks .

 

[Sho Amo]

The vacuum line that connects the valve cover to the throttle body needs to be removed. Then cap it at the throttle body and either vent the valve cover or dump into a catch can. You will end up pressurizing your crank case if you don't. Also, how are you pulling timing? If you are only going to be running 4 psi I would recommend using the octane adjust bar.

 

[SHOtime2511]

Im running the same BOV on my turbo SHO.

 

[91PDXmocha]

How does it sound on yours ? I got it for free after working on a friends wrx . It wasent super loud on his car .

Sho amo - can you explain more on that I haven't read anything on them . Yeah it's staying at 4 for a week or 2 while I get everything together , but would like to drive it to work .

*Edit* just read up on this. the plug that will pull 3 degree of timing that is located under the coil pack right? I will pull it when I get home.

Any advice on a affordable wideband ? I have 1 o2 port almost in the same location on the rear bank.

Thanks for the replys guys

 

[Sho Amo]

You also need to block the one at the bottom of the throttle body that goes to the crank case. These are vital because once you get some boost it will pop out your cam seals.

 

[91PDXmocha]

You also need to block the one at the bottom of the throttle body that goes to the crank case. These are vital because once you get some boost it will pop out your cam seals.

Thanks , yea Scott told me about that too , I'm going to make a catch can tonight and get all my vacuum lines ran correctly .

 

[somedude_001]

You also need to block the one at the bottom of the throttle body that goes to the crank case. These are vital because once you get some boost it will pop out your cam seals.

yeah my car nearly caught on fire from that a few years ago.

my car on 6psi was still a welcome improvement over stock. How does 4psi feel?

Just think. it will never break on 4psi

 

[SHOtime2511]

Great new way to get old cam seals out.

 

[91PDXmocha]

HOLY SHEEET .. just took it out for a real test ride around the block with a only barely leaking oil return line.. I barely let into 1-3 and by 3200-3500 it was whistling fast into 5-6 psi . I really went easy on it til i can put the proper fitting on tommrow but all i can say is wow... I am more jacked up right now then any amount of coke and hookers could induce. I have some ****** videos that barely show crap but ill try and host them .

Before this run I made a few changes, i installed some 1700 degree resitant shields around the turbo area and downpipe touching anything. I tryed to repair the leaking ****** ****** I made and it got better but still leaks. The return line is dumping into the low oil sensor right now I know its now ideal at all. I have a oil pan with a fitting drying in the garage right now to install soon.

all I can say is wow.... I barely have a taste at 5 psi and the last 3 min ride I took in my sho was the best ever .

 

[Toolman]

What they say is true. Boost is ADDICTIVE! Have fun!

 

[91PDXmocha]

Got a nice vibrant oil drian ****** and am putting it on now and changing the way I ran the drain. Should be good to go .

So with me running 4-5 psi should I leave the spout plugged in so the computer can read the air or should i just pull it and it runs 3 degree retard from the base curve all the time right ? I havent takin the car over 4500-5000rpm and probably wont I dont want to risk anything.

any prefered places to get a wideband I can get the cheapo PLX with just the digital display at work but kinda want somthing slightly nicer but not crazy spendy either. I need to save doh for the tweecerRT .

 

[Sho Amo]

No. The spout connector pulls like 15 deg where as the octane adjust only pulls 3 or 4. The spout is near the cam sensor and the octane adjust is near the coil pack. How fast does that turbo spool? What kind of wastegate are you running?

 

[yamahaSHO]

Now all you have to do is admit you have a problem

It's fun, isn't it. You'll never enjoy an NA SHO again

 

[91PDXmocha]

Now all you have to do is admit you have a problem

It's fun, isn't it. You'll never enjoy an NA SHO again

yes... wow the first time i eased into first gear and it cracked up to 5 psi .. i let off so fast cuz i thought I was breaking somthing haha . im really excited for the future