
My M20 early model turbo guide.
This was a semi budget kit and should be a good guide for anyone getting ready to boost their car.
Manifold: eBay special, thin wall tubing, might not last forever, but so far so good. If it breaks, take it to a good exhaust shop to patch the welds, should still be under $300 and will be a manifold that should last forever.
Turbo: Another eBay special, i suggest against them, i got lucky and mine has lasted great and has the same shaft play as when i removed it from the box. Popular turbos for e30s are the "Holset HX35" found on turbo diesel engines.
Oil lines: I ordered a -3an feed from "fast-turbo.com" (great guys), roughly 3ft long. Drain i used an adapter plate which i can't remember where i got it from, but you should be able to find something fairly easy searching the web for "T3 oil drain flange". I bought a brass nipple from Menards, matched the diameter to a drill bit, drilled the pan directly under the turbo with it still on the car. Use a lot of grease to catch any metal shavings. I wallered the hole slightly until it was a tight fit, hammered the fitting in and JB welded it to seal it. Drain your pan before doing this as you will have a huge oil spill (i'm sure you can figure out how i know

). I personally used PCV tubing sold at O'reily's, it was a perfect fit and holding up fine without getting soft or brittle from the heat and oil.
- Oil filter relocation, required for eBay manifold. I ordered a universal kit from Summit, however the lines included touch the manifold. I ordered new fittings and steel braided line again from Summit. Here is a copy of my invoice.
4: SUM-220846 8AN TO 3/8 NPT ADAPTER $2.88 $11.52
2: SUM-220887 -08 90 SWIVEL HOSE END $14.95 $29.90
1: SUM-230806 S.S. BRAIDED HOSE-8 6FT $26.95 $26.95
2: SUM-220890 8AN Hose to Female -8 AN $6.95 $13.90
I also ordered 2 of the straight -8an hose ends, i have no part number off hand, shouldn't be hard to find though now that you know what you need.
Intercooler and piping - This is why i specified it was an early model car, i tucked my intercooler behind the "cow catcher". Intercooler and piping was ordered from CXRacing.com, their kit has T-bolts, aluminum piping, and reinforced Silicone couplers, awesome deal, great quality. I used a holesaw where the factory airbox was to run the intercooler piping up through it.
Engine management - kept it simple, 22lb Ford injectors, FMU, Walbro fuel pump, SAFC.
Should pretty much cover it, any questions, ask.