1992 Miata, LS1, then LS3 swapped

[mazpower]

Just been plugging away on it.

I took it to DGRR back in April. 5000 miles, 70 hours, averaged 26 mpg.









It started making a weird thumping sound in Louisiana...about 1800 miles into the trip. I thought it was the tranny but a friend suggested I replace the throwout bearing. So we did that outside the cabin when we got there and the noise persisted. Found out last weekend that it was because 5 of the 6 flywheel bolts came loose. I followed ARP's torque specs, so much for that. I used red loctite this time, hopefully they don't come loose again.

I recently put a dual wideband setup on it that interfaces with the Haltech and found that the original wideband I used to tune the setup was reading lean and the mixture was far too rich. I leaned it out some and found some more power according to the butt dyno. I've got a chassis dyno coming in a week or so and I'm gonna do some fine tuning with it, see where the power is at. Feels like 460ish at the wheels.

I ran a couple liter bikes a month ago, a new Kawi ZX-10R and slightly older Yamaha R1. By the top of 3rd I was pulling on them a good deal.

Next month I'm gonna start gathering piping and flanges to build a new set of headers for it. The current headers have 1 1/2" primaries and 2.5" collectors. The new headers will have 1 3/4" primaries and 3" collectors. I'm gonna rework the entire exhaust system too, 3" duals all the way back instead of the 2.5" it is now. Then a new set of true LS3 heads and a 102mm intake and TB and hopefully I'll be over 500 wheel HP.