My Twin-Turbo SBC 240Z Build by PaulR

2 minute(s) of a 13 minute read

She runs!! I just fired it up and checked for any obvious issues... no leaks, no smoke, etc. Compressor spins  Just let it idle a bit then shut it down. Need to set the wastegates for lower boost before I take it for a spin. I want to try things out at 6psi just to make sure all is good. The wastegates are now set for 10psi (checked with my air compressor and boost gauge) so I need to modify. They're the stock inernal wastegates, but I found a write-up on how to decrease the boost with an external spring. Also need to make some changes to the Fuel Management system (Holley Commander 950)

2-4-2009

I set the wastegates to start opening at 6psi (added the external spring), down from the stock setting of about 10 psi.

got them re-mounted and just started tuning. I've got the fuel map set so that it's running pretty rich right now. Hope I can find the time to do some serious tuning soon.

Don't know  I haven't taken it out of the garage yet. I just got the tune set tonite so it will idle good now. When I rev it up, it bucks a little before smoothing out, but the A/F meter shows about 11.5:1, so I know I have a little tuning to do before I get it on the road. Turbos spinning up sounds cool!!! I tried video w/ my digital camera, but the audio is horrible. Unfortunately I've got another commitment this coming weekend, so probably a couple more weeks. Hey, like I said at the beginning this has been a project I started 4 years ago... what's a couple more weeks