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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 08-06-2009, 03:51 PM   #21
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Quote:
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Is it in yet?
... thats what she said?
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Old 08-06-2009, 04:43 PM   #22
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*subscribe*
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Old 08-06-2009, 04:58 PM   #23
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That oil drain is a genuine Garrett part! I'm also installing a smaller tubo...is that even legal?
I guess we can let that slide.

You're making the car more auto-x friendly it seems?
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Old 08-06-2009, 05:07 PM   #24
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I'm just trying to get the full potential of out a stock motor <250rwhp setup. If I can still make 230rwhp, as I'm at now, why sacrifice the low-end I know I can gain?

the auto-x benefit would be nice, as well as the overall experience. I only HDPE ever once in a blue moon, so it wouldn't really hurt me there. But, If I didn't have a stock motor and made it to the track more, I probably wouldn't bother.
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Old 08-06-2009, 06:20 PM   #25
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You should chat with Emilio. I know he had a water/air IC for a bit with the idea of increasing throttle response.

I'd like to do a real datalog and figure out how much that matters. Put some sensitive pressure sensors along the intake tract and find out what really does what.
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Old 08-06-2009, 07:20 PM   #26
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I'm not THAT considered that I'd go with a a/w IC. my new tube and fin already shaved off close to 400rpm from my spool.
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Old 08-06-2009, 07:42 PM   #27
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Originally Posted by gospeed81 View Post
She's right...but I still told her that her ***** felt just like her sister's last night.
Haha- I know exactly like you mean. Your wife's ***** do feel exactly like her sister's.
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Old 08-06-2009, 10:31 PM   #28
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You still want that T3 compressor I Have?

What I've got IIRC is a 40 trim.. Pretty tiny...
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Old 08-07-2009, 03:07 PM   #29
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I gotta go back out and button it up later today:

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Old 08-07-2009, 03:48 PM   #30
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Why are there two vacuum ports on the wastegate can?
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Old 08-07-2009, 05:00 PM   #31
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to make use of pressure differentials.
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Old 08-07-2009, 05:26 PM   #32
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Just pausing to notice that was Brain's 20,000th post.


Wow.
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Old 08-07-2009, 06:26 PM   #33
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Nice! It looks good. Go to home depot, get some aluminum tape, it's like $5/roll. Excelent stuff, wrap those heater lines in it.

If you want toi go all out, get that, and the 'water heater/pipe tape', also aluminum, but with a thick layer of foam.

I stopped losing hoses/wires when I wrapped everything in it. Super cheap, stays on, and works better.

The second fitting is on the far side of the diaphram, if you don't want to reference atmospheric.
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Old 08-07-2009, 06:27 PM   #34
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Quote:
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Just pausing to notice that was Brain's 20,000th post.


Wow.
+1. Wow.
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Old 08-07-2009, 10:49 PM   #35
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Wow, you went to a manual rack.
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Old 08-08-2009, 11:30 AM   #36
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That exhaust wrap has been holding up for more than few years now...

yeah the new car I put together has manual rack, it's so choice.
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Old 08-09-2009, 02:52 PM   #37
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I finally got a chance to run out and finish bolting it up and to check for leaks. All seems well, i think i wired it wrong cause I only got wastegate pressure. I need to fool around with it later this evening or tomorrow to see how it reacts at 13psi.
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Old 08-10-2009, 11:24 AM   #38
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Before I removed the first turbo I made sure to take a good 4th gear log of my spool. Starting at 2600rpm or so when I hit WOT.

This morning I went to the same stretch of road and did the same. This should have given me the best comparison of the two. I'm only hitting my target boost about 100rpm faster vs. rpm, but the interesting thing seems to be the rate of RPM increase. When I overlay the two the rpms increase faster.

I even went as far as to make sure the ending RPM was exactly 4K so the scaling should be more or less spot on. Looking at the two I even hit WOT with the new turbo 100rpm less than the new one, yet my rpms increase much faster.

This makes me think I'm making more torque lower just like I wanted. I can still play with the timing and wastegate rod to try to increase the speed, but this mornings drive I could tell the power delivery was much smoother and there was less of a torque surge when the turbo made boost.

My duty cycles are a lot higher with the same AFR during spool, so that for sure means more torque.

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Old 08-10-2009, 11:40 AM   #39
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Old 08-10-2009, 03:40 PM   #40
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Hell Yeah!
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