What's your fuel system setup and were you watching your fuel pressure?

 

stock injectors/rail. supra fuel pump, aic system with 2 extra 750cc injectors.

 

Sounds like it went lean for some reason. 20B time

 

I think This is the thread you meant to post in "your" blown motor thread

 

No way, my fuel is the extreme from rx7store.net. 2 fuel pumps, their fuel rail, 850cc primary and 1620 secondary.

No theories yet, i have to start the teardown. Im gonna send the injectors off to have them flowed and tested, maybe one was lagging. Probably gonna upgrade the primaries to 1000cc's. Im tired of dickin around with only 500rwp

The alky system was working fine and the afrs didnt look out of the norm. I didnt really have time to pay attention to the gauges closely at 140mph

 

It may have been the isopropyl alcohol, it doesn't have near the cooling properties of plain water or meth. I'm curious why you were running that over methanol?

Edit: http://www.engineeringtoolbox.com/fl...eat-d_147.html Check out these latent heat listings.

 

**** that. I can spray a stroked Vortech'd LS2 all day and still make more power than your 20B. Not saying anything bad about rotarys but when I blow mine again I want to make more power and do it RELIABLELY........

 

Please dont say that. I have the same motor as you and mine has about 7k miles on it......... It better last way longer than that.... I hope

 

Age of fuel filter?

That sucks to hear man....its always sad to lose an engine....

 

Rx7 store replaced it 2 years ago when they did the build.

 

sorry to hear that...but there is nothing like rebuilting an engine from ground up and hearing it roar for the first time...sweet music to my ears...best of luck man