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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 05-04-2010, 02:34 AM   #1
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Default Well I took the ebay turbo plunge

http://cgi.ebay.com/ebaymotors/ws/eB...#ht_5222wt_939


Thats what I went with. Yeah I know it will lag some, but I like a good punch . Ill get some pictures up when I get it, and report on build quality.
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Old 05-04-2010, 02:37 AM   #2
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Grr. I'm excited for the ebay v-banded turbo. They're one step closer with that one.
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Old 05-04-2010, 02:52 AM   #3
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TBH in a miata that style of vband housing sucks. There just isn't enough room to fit a proper downpipe on a turbo that large, plus it requires that you keep the implements for an internal gate.

IMHO you should have gone with a 50 trim rather than the larger 63 trim compressor, but you'll be happy with the "big bit" .
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Old 05-04-2010, 02:54 AM   #4
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indeed, having a bolted flange for the downpipe was a big PITA. This should knock a solid 15 min off turbo removal/install. I have no problem with modifying the rear shelf a little for clearance if needed.

I really wanted to go with an external wastegate, but sending the manifold to BEGI would just take too much time and put me over my budget.
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Old 05-04-2010, 03:06 AM   #5
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Quote:
Originally Posted by cardriverx View Post
indeed, having a bolted flange for the downpipe was a big PITA. This should knock a solid 15 min off turbo removal/install. I have no problem with modifying the rear shelf a little for clearance if needed.

I really wanted to go with an external wastegate, but sending the manifold to BEGI would just take too much time and put me over my budget.
I seriously doubt that you'll be able to fit a 2.5" vband downpipe in there.

This is what a 2.25" downpipe (could be smaller) fits like with a BEGi mani and a 1.6:


That is ground out almost all the way to the edge of the shelf, and it still barely fits. Add in another .25" diameter to the pipe, plus the fact that the vbands themselves will add approximately 3/4" to the total width, you might need to start considering alternatives if you don't want to have to cheat the **** out of the bend (and even then it might not fit).
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Old 05-04-2010, 03:28 AM   #6
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I have a 2.5" downpipe with a stupid flange setup in there right now, and I got it to fit without messing up exhaust flow. Ill post it up when I get done.
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Old 05-04-2010, 03:30 AM   #7
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Jig saw.
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Old 05-04-2010, 08:33 AM   #8
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Quote:
Originally Posted by Jeff_Ciesielski View Post
That is ground out almost all the way to the edge of the shelf, and it still barely fits. Add in another .25" diameter to the pipe, plus the fact that the vbands themselves will add approximately 3/4" to the total width, you might need to start considering alternatives if you don't want to have to cheat the **** out of the bend (and even then it might not fit).
Dang that's tight. Can you even get the downpipe off without pulling the turbo?
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Old 05-04-2010, 09:10 AM   #9
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Quote:
Originally Posted by Jeff_Ciesielski View Post
I seriously doubt that you'll be able to fit a 2.5" vband downpipe in there.

This is what a 2.25" downpipe (could be smaller) fits like with a BEGi mani and a 1.6:


That is ground out almost all the way to the edge of the shelf, and it still barely fits. Add in another .25" diameter to the pipe, plus the fact that the vbands themselves will add approximately 3/4" to the total width, you might need to start considering alternatives if you don't want to have to cheat the **** out of the bend (and even then it might not fit).
This is a pic of the 3" bellmouth downpipe I make for a 1.6/BEGI setup. It fits with typical shelf trimming. For some reason your pic shows seemingly a lot less room, that's strange. The IWG add-on thickness will make things more difficult but it should be doable with a lot of time and at the worst case some pie-cuts.

1 pic below:
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Old 05-04-2010, 11:07 AM   #10
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It fits that tightly because I have a "donut flange" instead of a typical bolt on flange. With that style of v-band adapter, there is even less room than before, with larger piping.

I didn't say it was impossible, but from what I've mocked up, it would be more of a headache that I want to deal with. I ended up going low-mount and saying **** it.

Edit: Tim, is that a 3" downpipe you make for a t2 turbo by chance? I cant 100% tell, but it looks like it.
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Old 05-04-2010, 12:31 PM   #11
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You can always cut back the shelf if you need more clearance. The V8 swap crew does that regularly with no ill effects as far as I know.
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Old 05-04-2010, 03:40 PM   #12
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Quote:
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You can always cut back the shelf if you need more clearance. The V8 swap crew does that regularly with no ill effects as far as I know.
Thats what I plan to do worst case.
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Old 05-06-2010, 03:19 AM   #13
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btw make sure they glued it properly.
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Old 05-06-2010, 10:23 AM   #14
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So is it mounted yet... Im about to take the plunge too
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Old 05-06-2010, 02:36 PM   #15
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So is it mounted yet... Im about to take the plunge too
It wont be here till monday... which means ill be away for FSAE competition. It will be on next weekend.
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Old 05-06-2010, 02:57 PM   #16
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NVM I didnt realized it was a T3 flange turbo. I haz T2 flange.

That's a great price, I hope it turns out well.
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