Sonoco 116. Wow! 12-13 afr is much leaner than I'm used to going on turbo'd piston cars. Considering the extra 20 hp we saw from the bump from 10.0 to 10.5 afr, I'd bet there would be a considerable amount of power going that lean! Looked for a good thread concerning afrs on race gas but came up nil.

Props on an amazing build!

Have you had a chance to do any more tuning?

I keep my 13B's at less than 11.5 AFR under all boost. I shoot for 11.2 and keep it between 10.8-11.5. Its pretty safe. Would not go near 12 under boost unless you are talking about 13psi or less.

Nice build.

Chris

Pump gas or race gas?

any updates? anymore pics? run times? slips something?

I'll let him tell you the bad news...:(

Or you can go over to the single turbo forum.

https://www.rx7club.com/single-turbo-rx-7s-23/blew-engine-need-help-diagnosing-924962/

NOOOOOO!

Yep. It's true......popped the motor. On the first cool day of fall, I took it out for a run and the boost hit 27 psi instead of the previous 22 psi. A number of things lead to it's demise, but two of the major contributors were too hot of a plug with too large of a gap coupled with a week ignition.

No worries though, I planned on toasting at least one motor in the learning process. Gives me time to finish the lingering things on the car in the meantime.

When the engine let go.........that fucker was straight out flying!

that sucks bro...

Great car, really impressive. Good luck with the new motor!

Well, the revival begins. Sending the turbo to A-Spec for inspection and a swap from the 1.15 ar turbine housing to a 1.01. The new 4.30 back cut gears came in from Moser to replace the original 4.88 gears. These two things should help the boost come in a little bit quicker. Going to finish the windows, chassis wiring, and some other pending items before pulling the engine for a rebuild.

In the meantime, I finished the new driveshaft loop.

beautiful bro...

That has got to be the nicest looking driveshaft safety hoop I've ever seen...

A little more progress. I decided to add loops to the front and rear of the car to hook to for dyno runs, strapping the car on the trailer, and towing the car when the engine blows. :lol: When we took the car to the dyno, they screwed up the paint on the axle and scuffed the finish on the gas tank. Kind of pissed me off, so I came up with these. Pics of the front to come....

Also finished the windows and door panels. I made the drivers side removable so I can still get out of the car when it's in an enclosed trailer.

The new ECU also came in.

Is the new motor ready? I hope the Haltech meet the needs of your set up. Keep up the GREAT work!

Nice. So who's going to make the first 1/4 mile pass... you or Allen? :lol::lol::lol:

My goodness... I must say you are one hell of a fabricator. This is a badass build.

I've got money on Allen!:nod:

March is right around the corner!!! You better get cracking!

I like the strap/tow hooks that nice and different at the same time...

what up allen whats good bro...

Not much Teddy, just trying to make a living!

This is really unique, I love it.