My E28 535is Turbo Buildup Thread by Brad D.

5 minute(s) of a 28 minute read

Progress Update - 

Had a little time today to begin working on the downpipe. Its 2.5" out of the turbo transitioning into 3" all the way back. I'm pretty proud of it. I still need to add the wastegate return but now that its where it is, that should be easy. Tomorrow I should finish it up back to the cat flange and get the wastegate dump plumbed in. 

Here is how the wastegate mounts. The dump will be straight shot right into the downpipe (don't mind the coil wire). 

10/14/2007

Well, I made more progress this weekend, but I didn't take any pics. I'll get around to getting some soon though as everything is coming together nicely. I got my turbo oil drain in the oil pan drilled and tapped. I got the wastegate dump plumbed into the downpipe. I also fabbed up an inlet pipe with a fitting for the bosch bypass valve I will be using. I also plumbed the IACV back into the IC piping so I can have idle control. Its down to all the little nitty gritty details now. I still need to drill my oil filter block for my oil feed, fab up my exhaust, heat wrap stuff, paint things, install MS and add a few wiring circuits. No sweat! 8)

10/21/2007

Update time! I didn't have a whole lot of time today to get much done but I knocked out a few odds and ends and took some pics. 

Engine bay shot 

Air filter and BPV fittings. I have an upgraded billet bosch BPV replacement. (thank you Volvo) 

Oil return installed. 

All stainless Swagelok oil return. 

Oil feed in filter housing installed 

Wastegate dump pipe 

I've still got lots to do. Hopefully I will get some more done tomorrow. I will take more pics as usual.

10/27/2007

Exhaust is done! 3" Mandrel bends with a Magnaflow cat and muffler. Tip is just some cleaned up 3" SS tubing TIG'd on. 

Downpipe closeup 

Manifolds and WG dump 

I wanted the valve cover and intake to look decent as they were orignally dirty and covered in cosmoline. I went for the not so original but clean wrinkle black with shaved raised lettering. It looks even better in person. 

I should get the downpipe wrapped tomorrow so I can reinstall all of the exhooassed parts and the turbo with all new gaskets as well as get the intake and valve cover reinstalled after I do a valve adjustment.