Where do I go from here, build-up :)

[Subcept]

bout a year ago bought a clean '87 supra from a co-worker, 60k on a JDM engine, but had a slightly BHG. got really excited and bought a generic ebay turbo kit before I started reading up on the car. Then found this site (I've only built up n/a VW's) I'm not new to cars, just to turbo systems, so I may ask some dumb questions.

Tore it down, machined the head. block had some pitting, but was flat. cometic MHG, copper spray sealer (was used MHG, spent 7 hours stripping it down), ARP studs @ 87lbs, and someone broke into it outside my shop and stole intercooler, BOV, new boost gauge, k&n..

Now its back in my shop, back to work, I'm just looking to build a fun weekend play car, and am a bit over my head financially in this, as far as what I still need for this adventurous build, so generic components if I can get away with them, are preferred. down the road I don't mind upgrading, I just need to get this car on the road and out of my shop.

SO. originality I was going to go with maft-pro, but am thinking of doing the lex / 550 rout, but with everything else needed, I'm practically at the cost of the maf-t, right?


So I have a larger than desired 1.14a/r generic turbo, e-bay manifold, external wastegate, another intercooler, 3" hard piping, all new gaskets, and a huge assortment of lines, couplings, fittings, etc that came with the turbo kit, about to purchase warlbo pump, 550's, AFPR. as well as a machinist at my disposal, and I do aerospace fabrication / tooling for a living, so fabbing and mechanical work isn't a problem for me.


(correct me if I am wrong) with what I have (I'd rather not backtrack on what I already, regrettably purchased) if I went with the lex afm set-up, I would still need to buy a fuel computer, boost controller, + the lex afm, I'd be at roughly $700. but it just seems easier than the MAFT-pro to me. if I went the maft-pro rout, what else would I need to buy?

Also, new turbo is oil only, so I just need to rout the stock turbo coolant lines to each other, right? (as opposed to blocking them off)


any help, realistic suggestions, ideas would be greatly appreciated, I'm in a bit over my head :1zhelp:

~Steve

some fun pics:

after head re-instal, with turbo mocked-up

 

[gtsfirefighter]

Looks like a nice car to start with. Good luck.

 

[dok33]

Looks like a fun project! For the lex route, you can get a lex afm for around $80 shipped and an Apexi safc for ~$150-200. You'll need 550s and a wideband with either route and you can build a $10 boost controller from home depot parts (there's a few how-to's if you search google). Not sure what a Maf-t pro runs but I think it's more than $280

 

[Subcept]

I'll continue this thread with pics, issues, probably a lot of "why NOT to buy ebay turbo kit" points, heh, and keep it interesting

But as of right now I'm just trying to figure out which rout will help me get this thing on the road, as I'll only have about 2 grand to drop into it in the next month or so. I'd be happy with 300whp as a starting point even (original goal was round 450)

I've been reading up on the apexi safc. From what I can tell you need to set it up using a wide-band on a dyno, correct? and it claims to be able to correct for open atmosphere BOV's, is it actually effective in doing so?

And with the manual boost controllers, I live in WA where the weather has ADD. how much of a pain would it be?

first 3 problems with ebay turbo kit: badly warped manifold flange, required machining. And required 2" spacer from my machinist so that the compressor housing doesn't hit the exhaust runners so that the compressor outlet can point down, and not into the fender. I'll get pics of this as soon as I get it bolted in. I'm waiting on a new oil line fitting for the block, as the turbo kit was missing the one that goes directly below the turbo. (uses a soft line, instead of the hard accordion line on the stock turbo)

 

[dok33]

The ebay turbo kits aren't bad as long as you go into it knowing some stuff will have to be adjusted. Make sure you clean the inside of the turbo out too, I've heard stories of blasting media being left inside of the housings.

As long as you tune with a little overhead on boost a MBC will be fine, you shouldn't be at the very end of your boost limit anyways. If you want a decent, cheap EBC Mark at XSPower sells one that includes a turbo timer for $200: http://forum.clubna-t.com/showthread.php?t=4817

You should be able to tune the SAFC on the street with a wideband, dyno is good for fine tuning but a street tune will do.

 

[Subcept]

well like I said my primary goal right now is to get it on the road.
I'd love to get it running first, get any bugs out of it, then install the maft-pro, since I know itself can cause running issues. Granted the car ran fine before I started, but since this is my first big tear-down, and first time working on a supra I wouldn't put it past myself to f something up in the rebuild

think I'm going to go the "smart" rout and just get the maft-pro.


I'll snap a buncha pics and start wrenching as soon as all the crap I just ordered gets here later this week


And with the maft, in theory even tho I put a huge turbo in it, just to get the car moving and get tags on it, I could install the maft with the 440cc injectors, and just keep the boost down, correct?

 

[Subcept]

New gaskets, IC piping showed up today. And my machinist finished the oil return fitting for the block (turbo kit was missing this one)

heres a pic of the aluminum fitting he made, as well as my coolant bypass I did today, since the new turbo is oil-only.

hopefully tomorrow if my manifold and turbo spacer is done, I'll be able to bolt in the manifold and new turbo, and start routing the IC pipes.

Also need to finish reassembling the intake side of the engine.

quick+ easy using modified old parts.

 

[Subcept]

many more hours of hurting my back, machinist got my 2" turbo spacer done, so I can turn the outlet of the compressor housing down, as opposed to into the fender. been re-connecting wires, vacuum lines, got the intake back in. waiting for the intercooler to get here (hopefully tomorrow) so I can start running my IC piping. need to fab a 2 3/4" to 3" elbow for the turbo outlet. (can you buy one somewhere?)

Decided that the heavy rubber hose that came with the turbo kit, for the oil return from the turbo, runs uncomfortably close to the exhaust mani, so I'm going to try and find a braided steel hose to use, to prevent melting / fire.

heres some pics of the spacer I had made, and where the engine is at now.

damn it takes a lot longer to build than it took to tear down

(not tightened down, just mocked up)

yey! everything fits!

and again, I shouldn't have a problem for now, using the stock injectors, furl pump, etc, with the maft-pro and this huge turbo, correct?

550cc injectors, FPR, and walbro pump are coming, just not soon

 

[Subcept]

maybe this is the wrong place to ask questions?

what do you do with the PCV and ISV hoses when you instal maft-pro, and are fabbing a new intake? are they capped off, or? anyone have some more info on this? (I don't have maft-pro yet, but am in the process of running all my piping and hoses right now)

 

[Subcept]

???