so yeah, i blew my engine. again....... took a **** on me at 150mph...with it being a little cold down here once i shifted to 5th it went lean on me.

 

go champ go!

 

LOL i remember your last thread bro. Gotta watch that cold air!

 

damn man that sucks, what seals were ya running?

 

this got me thinking now. do tuners tune the 5th gear? i mean they are always doing 4th gear pulls,

 

thats a very good question

 

The car doesn't care what gear it's in.

3rd, 4th, 5th would all work. It's just that 4th is most practical.

 

stock engine.

 

lol yeah mee too. this engine lasted me little over a year.

 

thats awful. how cold is FL this time of year?

 

Well now is a great time to swith to the single you were talking about. It sucks that it let go but atleast it didnt happen as you were just cruising. Just hope the blown apex seals didnt shoot back in the intake and take out the other rotor and housing.

 

That is why you need to tune in cold weather when the engine makes the most power. Then in summer it is very safe.

Not knowing which ecu you have: The PFC has a "Air Temp vs Injector" table that changes fuel based on air temp. When properly used, it prevents such leaning out problems.

 

Its not that cold. like low 60's. But that is still a huge difference when its usually in the 80's and you tune it in hot weather and then the temp drops.

 

yeah only problem is that I didnt have the funds to go single right now, let alone replace my engine. this is my 2nd engine in 2 years. im just afraid if i get another one, port, single, ect. that the same ting might happen again. spending an extra 4k a year on engines is not fun at all.

 

Where were you driving 150mph? Not on public roads I hope.

 

that sux! do you know which rotor let go yet?

 

that sucks man.

here's an idea - install a stock port motor, install a cat, install a stock ecu, install boost controller. keep boost at 10 PSI. can't blame bad tuning then.

just kidding, kinda...

in over 8 years of owning, modding and racing rotaries, i've never blown a turbo rotary. i just don't understand how some people go through them so quickly. good luck on your next one.

 

How much boost were you running? Get you some 3mm apex seals on your next one.

 

hmm....I tuned my PFS to 10.5 AFR on the wideband at 10lbs in the summer in 100F temps....how lean do you think 20F air would change the afr curve...? I have a friend tuned to 11.0+ seems dangerous if it was tuned to that in heat

 

Seriously, if you're on a limited budget, don't want more problems, but still want to keep the car, that's what I'd do. That's basically what I have, and it'll still easily do >150 mph, and is more than enough to get me into serious trouble if I'm not careful/alert.

 

i was doing 150+ cuz i was racing on an empty highway and do not wish to debate the smarts in doing that. im aware of what could/might happen when im doing that.

im not saying it was the tuning either. the car started running rich/lean/rich/lean. i let off of it but i guess it was too late. i believe i had a problem other then tuning with my fuel system.

 

So how old were your injectors,filter, pump.

 

the 2 550's and 2 850 for all i know were orig. the 2 extra 750's/ fuel pump/filter were 1yr2mo old.

 

swaping out 14 yo injectors or at least having them cleaned should be a priority.

 

I think the next car you build you should use an Electromotive ecu. Im no "expert" but I live next to Defined Autoworks and every time they get a blown car limping into there shop the unprecise power-fc seems to be a big factor. I have been running my Electromotive for a while now and have had no problem with my engine. I do know the my Electromotive uses a 60 tooth trigger wheel unlike the PFC wich uses the cars stock one.