E36 M50 build. I haven't settled on a manifold yet. My question is, which of these three WG port locations is most practicable? Side, rear, or corner, that are options on the cast manifolds. I've been searching and reading many threads, but since a few of the image hosting sites began charging, a large percentage of photos don't appear on the threads anymore. Disappointing.
Anyway, I've owned several turbocharged vehicles but never built one. I am very capable. In addition to assembling my engines, building my own engine harnesses and ECUs (MS2 Extra), I've programmed and tuned my own cars. I also can TIG weld aluminum for my charge piping.
So, which causes the least/most problems with access, interference, installation? Or do they all equally suck?
turbo wg 3.jpg turbo wg 2.jpg turbo wg 4.jpg
Last edited by h82crash; 02-09-2020 at 10:05 AM.
Tom
Currently 1995 M3 manual coupe, 1993 325is
Past cars
2003 530i
1998 528i
1995 530i
1988 528e
1988 535i
1987 2.7i
1972 2002
You want the exhaust gasses to have as straight of an exit as possible.
wastegateplacement.jpg
Make sure the manifold flange is machined flat before you install it, some of the cast manifolds have been known to warp overtime as well though.
Last edited by Hova; 02-09-2020 at 12:40 PM.
"Be who you are and say what you feel because those who mind don't matter and those who matter don't mind."
-Dr. Seuss
DIY BMW Tools. Charlie For President
With some manifolds, the wastegate is mounted closer to the exhaust, with a pipe running from the manifold to the wastegate. Works great. Spa, boostlogic and others do this because there really is not room to mount it to the manifold. The engine bay is too tight. An exception is the twinscroll steedspeed manifold, which is very compact and puts the wastegate on top of the manifold, but it is a very tight fit.
Thanks, so far good info. I just wonder if the valve can fit on any of these manifolds or do they need a pipe to extend. I saw the Steedspeed. Everything is still tight. I guess with any of the options, I'll still need to get under the car to adjust it, or a remote boost controller?
Tom
Currently 1995 M3 manual coupe, 1993 325is
Past cars
2003 530i
1998 528i
1995 530i
1988 528e
1988 535i
1987 2.7i
1972 2002
Basic, proven solution is SPA with a relocation pipe for the wastegate. Then put a base spring in and use boost control solenoid to adjust higher. You'd should 't need to get under the car to up boost pressure. I would recommend one of the gauges with fauisafe and boots control. Allows for some peace of mind and a single gauge and touch point.
If you are after more performance, spool, or twin scroll, go steedspeed, hut same principle with boots control.
Sent from my SM-G960U using Tapatalk
Last edited by drstuess; 02-09-2020 at 09:22 PM.
The Eboost controller in the gauge is popular. You can go 50% past spring pressure no problem. 100% might be too much.
I have a full hotside TT kit FS with only 10K miles on it from previous owner. PM me if interested
Garrett 60-1 turbo
Tial 38mm WG
TT Manifold
Downpipe (needs welded onto your existing exhaust)
WG pipe bolts right up to downpipe
TS BOV
Have most connections for turbo, but will need oil supply line
42lb injectors + 255walbro
No IC, IC piping, MAF, tuned DME
More pics on my website at turboe46.blogspot.com
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