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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 11-06-2010, 12:16 AM   #1
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Default Frustrated.

So, I have everything sitting in my garage ready to be put on, but I'm having such a difficult time deciding if I really want to put everything on, or if I should try and sell it all and purchase ITB's instead. I'm not in the realm of wanting a LOT more power, just a noticable amount.

I keep coming up with small issues that set me back another month.... another month.... another month, etc..

My latest question is, when I tapped the pan, it was tapped every so slightly out-of-round (i tapped it about 1 mm too far to the left), so I had to JB-Weld in the fitting instead of actually putting tapping it and putting it in that-a-way.

Turns out I used JB-Kwik instead of JB-Weld, which has a melting point of 300f, and a friend informed me that it's very likely that the oil coming out of the turbo would be most likely at-or-higher then 300f.

Does anyone have any realistic knowledge of how hot it should be?

(For references sake my wastegate will be running me at 9psi minimum, and the turbo is a Garrett 2252)

I'm also a bit frustrated because I found out my 305cc injectors might be too small. :/ Is it realistic to have a stock fuel system with 305cc injectors putting out 9psi boost without any problems?
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Old 11-06-2010, 12:21 AM   #2
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Originally Posted by myrmidon View Post
I'm having such a difficult time deciding if I really want to put everything on, or if I should try and sell it all and purchase ITB's instead.
If I were that retarded I'd probably be frustrated too.


Ok...busting your chops. Really...just install the **** already.

Do engine management stuff first, so there's less holding you back later one when you invariably want to turn up the boost.

Even wastegate is HELLA fun in a Miata, and much more noticeable than some irrrtb setup will be.


As far as injectors are you using bandaids or a real ECU?
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Old 11-06-2010, 12:28 AM   #3
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buy my begi fuel pressure regulator and your 305s should be OK for 9 psi. ( i think )

or drive around a month or two at 5 psi on the 305s (Which is FINE), and then buy a set of bigger injectors when they come up for the right price.. no big deal.
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Old 11-06-2010, 12:41 AM   #4
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I think you'll be disappointed with IRTBS.. Since you already have all of the parts, you might as well boost your car. I'm currently running wastegate boost on my car and as Gospeed said, it's a blast in 1st and 2nd gears. However, I can't wait to up the boost to about 12 psi to have more power up top.

Anyhow, I don't think your oil temps will hit 300F and if they do, you seriously need to do something to reduce your oil temps such as install an oil cooler.
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Old 11-06-2010, 12:54 AM   #5
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I used JB weld on my fitting and it's perfectly fine. Rest at ease and install
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Old 11-06-2010, 01:11 AM   #6
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I used JB weld on my fitting and it's perfectly fine. Rest at ease and install
My only worry is that JB-welds melting point is 500f, kiwk's is 300, so I'm worried that the oil coming out of the turbo will be hot enough to melt it.

I'll be using DIYPNP
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Old 11-06-2010, 01:24 AM   #7
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Install the ecu and injectors first. Then do churbo.
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Old 11-06-2010, 01:39 AM   #8
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Install the ecu and injectors first. Then do churbo.
I agree. I installed everything at once, but luckily I didn't have one oil, fuel, or coolant leak and everything was mechanically sound or it could have turned into a nightmare. Learning to use the Megasquirt's been trying enough for me, but it would be an absolute nightmare if mechanical issues crop up at the same time.
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Old 11-06-2010, 03:20 AM   #9
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Oil temps will be ok with 300* JB weld.
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Old 11-06-2010, 03:26 AM   #10
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You'll be fine, just take your skirt off, put on a pair of pants, and turbo the ****** thing already!
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Old 11-06-2010, 10:33 AM   #11
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Install MS, wideband and injectors.
Get used to it.
Pull motor out of car and replace main seals, take oil pan off and have someone weld on the oil drain if you are that worried. Re-install.
Put motor back in and be a man!
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Old 11-06-2010, 12:31 PM   #12
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Seriously, if you totally screw everything up another motor isn't that expensive. Just do it.
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