Project SR E30: Part 5 – Installing the SR20
SR20 going up into an E30
With the driveshaft in, we can slowly begin to jack up the subframe into position. Note that we added gold reflective heat shielding to the firewall and brake booster to help manage exhaust heat.
Installing subframe bolts
After carefully juggling the subframe, we were able to slip it into position and install the bolts holding everything in.
SR20 installed in a BMW E30
And the SR is in!!!
SR20 E30 turbo elbow clearance
It may be hard to see, but the turbo elbow to steering linkage clearance is VERY tight. We’re glad we went with a stock turbo elbow.
E30 SR20 trimmed shifter hole
The shifter was stuck in 3rd gear, so we had to trim the shifter hole a little to allow the shifter to move freely.
E30 SR20 with radiator and fuel system installed
We hooked up the fuel system and installed the radiator before calling it a night.

Our biggest concern with this build at the moment is heat management. The exhaust manifold sits incredibly close to the brake master cylinder, and the turbo elbow is almost touching the firewall and brake booster. The fuel lines also sit less than inch away from the planned exhaust route. We’re definitely going to have to get heavy handed with the heat wrap if we want to avoid a fire. Might be a good idea to keep a fire extinguisher in the car just in case.

Look forward to the next installment, where we will hopefully get this SR running!


  1. Hey just a heads up: when using a bolt and nut with Nord-Lock washers, you require a Nord-Lock washer on the bolt and the nut. There was a video posted up by the Nord-Lock group explaining how and when to use their washers. Looks like you only have one on the nut.

  2. Are there any special considerations for using a brake booster from and NA on a turbo car? I’m finding very little information on this topic. I’m installing a B210 brake booster on my 4G63 turbo swapped Datsun 510. Although this booster swap seems common in the 510 world, very few people have information to share about making it “turbo safe”.

  3. really nice work guys!! Techline coatings makes a really effective coating for manifolds.. The effect is two fold. You’ll get about 100 degree drop in temp off the surface of the manifold and increase velocity of gases and aid throttle response. Also, the gold isn’t very effective. The silver heat reduction material :DEI heat shielding….is much more effective. So you would coat all you manifolds, Turbo housing (hot side) and if you want to get fancy you would coat all the parts you want to keep cool in their thermal dispersant coatings to shed heat. There stuff really work.. I’ve used them .. No affiliation what so ever

    1. Thanks for the advice, we will definitely look into that. Currently we were planning on using DEI’s Form-a-Shield thermal barrier to help protect the brake master.

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