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-   -   Mawnee's Custom Turbo build (https://www.rx8club.com/series-i-major-horsepower-upgrades-93/mawnees-custom-turbo-build-173808/)

Mawnee 07-04-2009 01:46 PM

I wasnt happy with the manifold. The turbo sat a little farther forward than I wanted and was twisted in relation to the engine. It was making lining up the intake pipes and cutting a downpipe difficult. So last night I cut one of the welds and repositioned it then welded everything up. Spent time leak testing the manifold and welding a couple pinholes. Manifold is totally finished now and my turbo is positioned perfect!

Unfortunately after I finished it and was cleaning up the garage I heard a gas leak in my welder. Found the gas line that goes up through my wire to the gun had a leak. Lost a third of my tank of gas to it too :wallbash: Now I'm off to home depot to track down some tubing to fix it.

Hoping to get my Downpipe done tonight then button things up tomorrow.

Mawnee 07-05-2009 06:46 AM

2 Attachment(s)
Unfortunately noone carries 3/16" nylon tubing I need to fix my welder around here. Smallest I could find was 1/4". I ordered some online, but no way am I going to wait for it. I patched up the leaking line by slipping some 1/8" tubing over the spilt with some goop in to seal it up. It may be leaking a little, but my tank pressure is holding and I can weld!

So I got my downpipe cut and tacked together. Its a bitch to get wrestled down into the engine bay. I actually have to have the motor mount hanging loose to get it through. That top motor mount bolt is gonna be a pain to get on but should be doable. Now I gotta get my wastegate tube made and welded on the downpipe along with the two 02 sensor bungs.

adviceinst 07-05-2009 08:35 AM

So if you are posting at 7:56 in the am today, does that mean you are going to have it back together to make it to Saturday's meet? :)

Mawnee 07-05-2009 08:39 AM


Originally Posted by adviceinst (Post 3101035)
So if you are posting at 7:56 in the am today, does that mean you are going to have it back together to make it to Saturday's meet? :)

I'm trying! :D:

Mawnee 07-06-2009 01:19 AM

My welder failed again and screwed up my day. This time i couldnt patch it. It will have to wait till my new line comes in. Fortunately I have a friend with access to a good welder and ran over there to finish my downpipe and weld together a downturn with a flange I can clamp it to my downpipe and run the car sans exhaust :D: I'll weld up my exhaust system once my gas line comes in for the welder.

Now I just need to get my Downpipe wrapped and installed. Mount my intercooler. Then cut my intercooler/intake pipes and get everything hooked up.

Almost there..... :)

adviceinst 07-06-2009 08:16 PM

Are you done yet?

:D

Mawnee 07-06-2009 09:05 PM


Originally Posted by adviceinst (Post 3103294)
Are you done yet?

:D

lol Had to spend the day with the family. Just woke up from a nap to go out and try to button it up :)

Mawnee 07-07-2009 01:56 AM

I have gotten nowhere. Turns out the way the turbo is clocked on my manifold that the oil drain fitting wont fit on it. The actual hot side housing inlet flange blocks the huge ass AN fittings that need to go on it. I've taken those fittings aprt and put them back together so many times they are probably going to leak.... :banghead::banghead::banghead::banghead::banghead:

Mawnee 07-07-2009 11:37 PM

1 Attachment(s)
Progress:

Mawnee 07-08-2009 03:19 AM

3 Attachment(s)
More progress:

SiLVeRE8 07-08-2009 03:53 AM

wow everything is coming along very nicely. good job!

Mawnee 07-08-2009 04:51 AM


Originally Posted by SiLVeRE8 (Post 3105745)
wow everything is coming along very nicely. good job!

Thanks :)


Later Today:
-Need to run out and buy a few hose clamps to button up the coolant lines.
-Then cut a few intercooler pipes and get that all together.
-hook up my wideband and tru-boost to a power source.
-add fluids
-flash to my base tune
-Start the car! :D:

Brettus 07-08-2009 05:22 AM

looking sweet .
That maf location will cause a few probs though

Mawnee 07-08-2009 05:28 AM


Originally Posted by Brettus (Post 3105773)
looking sweet .
That maf location will cause a few probs though


Still have to open up the hole into the bumper a bit so I can straighten out those pipes better.
Also going to have the MAF a bit farther forward and add some striaght pipe behind it as well.
I bought 3' of that 3.5" tubing so I can play around with it. :)

Zeon 07-08-2009 09:30 AM

The build looks awesome! Having said that, that BOV looks awful tall to be standing up right there, is that the final mounting angle/position for it?

FazdaRX_8 07-08-2009 11:59 AM

the maf location seems fine to me, but you going to run into a problem if you don't recirculate the the bov back between the turbo inlet and the maf.

if you don't the bov will actually suck in air at idle or crusing speeds, this will be un-metered air and the car will run really rough. as its getting more air then it thinks

if you recirculate the bov between the maf and turbo, then you will be fine because it will suck in metered air.

I hope this makes sense

Kane 07-08-2009 12:05 PM

Yes; it will be problematic if you don't recirculate - but you can tune it to stay closed at idle and part throttle - you may just get stalling. When BOV's open as a rule they let air out; and the car runs rich.

The only BOV that reliably opens in all engine vacuum is the Syncronic; and it was designed to do so.

Mawnee 07-08-2009 02:36 PM


Originally Posted by Zeon (Post 3105981)
The build looks awesome! Having said that, that BOV looks awful tall to be standing up right there, is that the final mounting angle/position for it?

Nah in that pic the BOV pipe is sitting on top of another one. It will sit far lower once its actually connected :)

Going to try to run without recirc. As sensitive as the Maf is to any turbulence and as little room as I have to get straight smooth pipe in there I'm afraid I wont be able to do so without screwing up the Maf readings .

My intent is to eventually get the synchronic BOV to match my wastegate. :)

Bryan@BNR 07-08-2009 03:22 PM

got to be carefull with those couplers that attach to the inlet of the turbo. They will collapse and suck closed when hot enough.

05rex8 07-08-2009 05:49 PM


Originally Posted by Kane (Post 3106225)
Yes; it will be problematic if you don't recirculate - but you can tune it to stay closed at idle and part throttle - you may just get stalling. When BOV's open as a rule they let air out; and the car runs rich.

The only BOV that reliably opens in all engine vacuum is the Syncronic; and it was designed to do so.

hks > synchronic

:D:

Kane 07-08-2009 05:52 PM


Originally Posted by 05rex8 (Post 3107224)
hks > synchronic

:D:

Don't make me hurt you wee man....:mchase:

Brettus 07-08-2009 05:55 PM

Kane gets a bit nasty with a "sodering iron" if provoked LOL

05rex8 07-08-2009 06:12 PM


Originally Posted by Kane (Post 3107230)
Don't make me hurt you wee man....:mchase:

:rofl:

Mawnee 07-09-2009 08:44 AM

Ran into some issues, will try to start it tonight after work.
I"m going to have to completely redo my intercooler pipes though. Intercooler sits too far forward and the bumper wont fit back on.

helldmgd 07-09-2009 10:56 AM

I love watching this build and commend u on the balls to DIY. I would love to do something similar, but I just don't have the funds. Would really like that t70 turbo kit out there but where do I get 6 grand from.... Where do you guys find the extra money to do all this stuff? My car payment/ins is $500/mo. Rent and bills $800/mo. I bring home about $2200/mo but for some reason everything is so damn expensive. Food, gas, beer beer beer.... And the wife. Guess I'm jealous LOL.


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