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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 11-24-2009, 03:32 PM   #101
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Another competitor

JK

Yeah, that SS really likes to shrink. How much heat/amps did you end up using?
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Old 11-24-2009, 07:43 PM   #102
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Had 130 atmy fingers. Depending on if the joint was beveled or had root opening I would start off full throttle for a few seconds then back down to 90 after I notice penetration.
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Old 11-25-2009, 02:12 AM   #103
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That's about what I use single pass with no gap, just a deep bevel. So there's full penetration? Do you have pics of the inside from the head flange side?
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Old 12-01-2009, 04:34 PM   #104
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A couple of more pictures. Since the diff is toast and the car is going to be sitting a bit pending a new diff, I figured i'd tear it apart again and start working on the downpipe. Since i'm doing a 3" bellmouth, i'm waiting on my flange and oval to 3" transition from ATP. I'll have a v-band on the outlet for ease of removal in the future.

Here is how it sits right now. I dont have the hardware to attach the turbo to the manifold yet. Not sure what i'm doing since there isnt' enough room to through-bolt it. Guess i'll just do 10mm studs like on the old BEGi manifold. What bit should I drill the holes out with for that?

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Keep in mind its also not clocked yet. I still haven't figure out what i'm doing with the mixing manifold and lower radiator hose, either. Was contemplating doing what neogenesis did with his setup.
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Old 12-01-2009, 04:41 PM   #105
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If you want, I have the correct drill/tap/extra helicoils for the 10mm studs. You are welcome to use them.

Looks awesome btw. Should be fun once you get that diff fixed
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Old 12-01-2009, 04:49 PM   #106
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I sent you thse 3/8-24 12 point arp nuts and some washers. Oh well.

I have used those ATP 3" oval to round transitions before...they do not arrive as described. Neither side will be "flat". But still easier than hammering a pipe oval over that sort a distance.
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Old 12-01-2009, 04:55 PM   #107
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Quote:
Originally Posted by TurboTim View Post
I sent you thse 3/8-24 12 point arp nuts and some washers. Oh well.

I have used those ATP 3" oval to round transitions before...they do not arrive as described. Neither side will be "flat". But still easier than hammering a pipe oval over that sort a distance.
Oh, well I can just as easily tap it for a 3/8-24 stud setup. I still wish I could use through bolts. Unless I ovaled the holes out to be able to tilt the bolts to get them through it just wont work :( Not enough clearance between the collector and the flange.
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Old 12-01-2009, 06:41 PM   #108
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Dang that turbo looks small in there, maybe its just the pics?
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Old 12-01-2009, 08:59 PM   #109
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Originally Posted by Gotpsi? View Post
Dang that turbo looks small in there, maybe its just the pics?
T25s are pretty small turbos. Compared to your tractor turbo its tiny, yes.
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Old 12-01-2009, 10:10 PM   #110
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Are you still having issues with the flange sitting flat? Looks pretty sweet i think.
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Old 12-01-2009, 11:55 PM   #111
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Quote:
Originally Posted by sbkcocker499 View Post
Are you still having issues with the flange sitting flat? Looks pretty sweet i think.
Ya it still teeters when its sitting flat but i'm going to try it and see if it leaks or not. I wish I knew someone with a sanding table, that would fix it pretty well.

I think the turbine flange needs resurfacing as well. At this point I'm just trying to get it together and get the downpipe done and running again.
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Old 12-02-2009, 08:37 AM   #112
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I realise the Greddy manifold always had problems and these were solved by stress cuts. But why does this manifold have cuts (for the Greddy reason?) around the bolt holes? Surely it was the tubing expansion that you want to correct so strong bolt holes help?
I notice TurboTim doing this too can someone please give me clue :(

BTW I think you've done a bang up job there well done.
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Old 12-02-2009, 03:26 PM   #113
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Quote:
Originally Posted by rrjwilson View Post
I realise the Greddy manifold always had problems and these were solved by stress cuts. But why does this manifold have cuts (for the Greddy reason?) around the bolt holes? Surely it was the tubing expansion that you want to correct so strong bolt holes help?
I notice TurboTim doing this too can someone please give me clue :(

BTW I think you've done a bang up job there well done.
Not sure what the deal is with the cuts to be honest. The flange comes that way from Weirtech.

My round to oval transition and flange came in today along with tim's fancy nuts.

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Downpipe build starts tomorrow morning.
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Old 12-02-2009, 04:58 PM   #114
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Quote:
Originally Posted by rrjwilson View Post
I realise the Greddy manifold always had problems and these were solved by stress cuts. But why does this manifold have cuts (for the Greddy reason?) around the bolt holes? Surely it was the tubing expansion that you want to correct so strong bolt holes help?
I notice TurboTim doing this too can someone please give me clue :(

BTW I think you've done a bang up job there well done.
Only one of my manifolds has these cuts on the head flange and that is because I got that flange from weirtech and he put them there at some point.
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Old 12-03-2009, 02:11 AM   #115
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That transition and flange look like the cat's meow. Is it going to take much massaging to get the transition to drop in?
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Old 12-03-2009, 03:37 AM   #116
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Quote:
Originally Posted by cjernigan View Post
That transition and flange look like the cat's meow. Is it going to take much massaging to get the transition to drop in?
Yes, very cool and yes, took some massaging. Massaged the oval narrower with the vice to fit the flange bevel, then massaged the round end to fit into the Vband flange i'm using.

I actually dont like the way its fitting with this particular v band flange. At first I thought it'd make more sense to use the heavier duty flange on the turbine exit, but now i'm thinking i'm going to change it to a lower profile flange I got from Abe (artech). The inner diameter on the smaller diameter one will allow me to slip the transition inside (giggity) it and leave me about an inch or more space for the first bend of the downpipe.

I have pics but Photobucket is down at the moment, will post them up as soon as I can.
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Old 12-03-2009, 03:11 PM   #117
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Pics of the assembly tacked together. The flange also doesn't fit the turbine housing unless I bore out one of the holes larger. I noticed this same thing was done on the BEGI downpipe flange so I dont feel horrible about it.
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Old 12-03-2009, 03:18 PM   #118
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Looks good bro
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Old 12-03-2009, 03:42 PM   #119
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Keystone light? Man it must suck being jobless. Why two nuts?
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Old 12-03-2009, 03:46 PM   #120
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Quote:
Originally Posted by curly View Post
Keystone light? Man it must suck being jobless. Why two nuts?
I know. I've got an affinity for cheap beer and now that I cant afford good stuff i'm forced to drink cheap stuff exclusively. 3 nights ago you would have seen a Mickey's grenade sitting there =P

Btw i'm not jobless anymore. Welcome to Costco, I love you.

And what about 2 nuts?
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