That's the good news, the bad news is I tried to run 14 P.S.I. and a rod bearing seized blowing it out the side of the oil pan.

For those in attendance at TorontoMotorsportsPark last night, sorry for shutting down the left lane.

Current mods,
STOCK motor 2.4l LD9, HPT tuned, 2 bar map with supercharger reflash.
T3/T04E 50trim
Tial B.O.V.
spearco intercooler
cast iron top mount exhaust manifold with a 38mm turbosmart external wastegate
2.5" intercooler piping
3"downpipe
Stg 3+ clutch and aluminum flywheel
nitto drag radials
NGK TR7's.

I drove the car for several days at 10P.S.I. no problems, A/R around 11.5-11.9. When I cranked it up to 14 P.S.I. I hadn't had a chance to tune it properly and was running A/F around 13.5 which didn't help with the motor failure.

So, for those wondering whether or not you need a built motor with a turbo set-up, here is proof that you can only go so far with a stock motor before you have a serious problem.

And, 750cc injectors ^^^^^^^

sorry to hear about that any ideal what you were running for hp?


THERE CAN BE ONLY ONE, i have already died once and im still here so lets just leave it on the track

Roughly 300whp. I didn't get a chance to go to the dyno.

you ran 14psi and 13.5:1 a/f ?

that completely explained your motor failure, plus with it being stock it was in no shape to handle that in the first place.


-Trailblazer SS - not so custom 6.0L - custom intake - custom tune
- (1) 2.4L on an engine stand (1) blown trans (2) good quad trans (1) eco trans = party

Were you running a stock fuel pump or an upgrade like a Walbro 255 lph?


2000 Z24 5spd header & catback for now.

i for one think it could have handled it that night if it was properly tuned.

forged internals dont like running lean either, just because you add that factor in the equation doesnt mean shiity tuning is acceptable.

Good times man











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ

Yeah...you definitely can't say that the engine couldn't have handled 14 psi because it blew in your case - it wasn't tuned for it, what would you expect? I would think 14 psi would be pushing it on a stock 2.4, but simply cranking up the boost without adjusting the tune at all is asking for trouble - just like throwing a turbo on, setting it to 6 psi, then leaving the stock tune, and wondering why it blows up. Hell I probably wouldn't run the car N/A at 13.5:1, let alone turbo.

Nice time though...just make sure next time around you're a little more careful about the tuning before cranking up the boost.

SpyhunteR wrote:you ran 14psi and 13.5:1 a/f ?

that completely explained your motor failure, plus with it being stock it was in no shape to handle that in the first place.

x2 should have just tried to improve on your 60fts and stay in the safe boost level



R.I.P. Brian Klocke, you will never be forgotten

Agreed with the rest - I ran my stock LD9 at 15 psi... for quite a while.

Your issue was AFR's and timing advance... no doubt in my mind that you were over-advanced for that heat range and your AFR's aided in pre-ignition. 13.5 under boost? You can't even really run a n/a car like that let alone one with 14 pounds of pressure above atmospheric + the heat that comes with it.

You were playing with fire and lost badly.

Lastly - the GMSC tune is... well... garbage for a turbo car. Lots of fuel mid range tapering off to zip-all up top along with a poor timing curve for a turbo setup... All I can say is had you kept it at 10 psi and re-tuned for 14 you would have been fine.

And just so you know, forged and heat-coated internals wouldn't have held up to that under 90% + load.... you would have blown ANY engine running what you did. It was just poor tuning and a poor decision that blew the motor, not any one failure internally.

Good luck.

-Chris-



-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...