VIDEO: Despite 11-12AFR, blew the motor

[accel junky]

ftp://240user:[email protected]/2 ... 20SRT4.MOV

Copy and paste the link to get the vid!

In video: I don't get 1 bar until 4900rpms and when I shift to the next gear, I have to almost completely respool (SUPER LAG!!!). Watch the boost gauge.

Well, having tuned the beast to 11-12 afr across the board (PLX Wideband/SAFCII) I somehow managed to screw up my motor.

After some test runs and a race...

I did a compression test and got 115,60,115,115,90,45 .....ouch.

I'm betting on blown rings, but maybe a headgasket? I ****-ton of smoke blew out in a race vs. a modded SRT-4 running 19psi. I was running 1 BAR.

Car won't idle on its own now. Also, I BLEW THE PCV VALVE OUT OF THE VALVE COVER AND OIL WENT EVERYWHERE....WTF???

Any ideas? My options so far are:

A. Rebuild the motor with forgies (CP pistons/Pauter rods) $3500B. Sell rb25, turbo, motor, crossmember, and all RB25 specific parts and acquire RB26 to run 400whp on stock injectors and rebuilt stock turbos. $8000-$RB25StuffSoldC. Hang myself.

Modified by accel junky at 8:50 PM 3/14/2005

Modified by accel junky at 8:50 PM 3/14/2005

Modified by accel junky at 8:52 PM 3/14/2005

Modified by accel junky at 8:53 PM 3/14/2005

Modified by accel junky at 8:53 PM 3/14/2005
Modified by accel junky at 8:54 PM 3/14/2005

[yellow_jacket]

Your luck is incredible! I was looking forward to seeing your car at one of the upcoming meets.

From the sounds of it, you might have blown the rings. When the rings go it pressurizes the crankcase and oil will blow all into everything. You can pressurize the cylinders and see if the air is leaking out of the motor or the intake or exhaust.

How much timing were you running? Do you have a egt gauge? How much power were you making?

If you decide to part the motor let me know. I could use quite a bit of the parts that you have.

I would love to know what you decide to do with the car and if you decide to go rb26.

[Joe]

if your PCV blew out its definatley rings.

how you blew them apart with a 12ish AFR is beyond me. thats pretty hard to do running that rich. id do a leakdown test asap to verify tho.

sorry for the luck. time for a 26

what was your fuel setup? what about engine managment?

[kouki-gymkhana]

Goddamn it, accel junky! WTF! I was so psyched that you finally got that thing on the road and then you grenade it like that. Shheessh! No but seriously, that sucks big hairy balls that you're back to the drawing board with that project. Let us know if you are going to part it out though. I personally would rebuild it with forgies and get that thing running again.

BTW: Linkie no workie for the vid

[Yellow4g63]

C. Hang myself.

Go for C.

j/k It was prob ignition timming that did you in. Were you data logging when it happened?

[T_love]

Damn man, that really sucks. I thought your problems were finally coming to an end.

I say rebuild, coz now you are a little more experienced with the RB25 and it should be easier to get the next one going

[accel junky]

Yea... the timing thing did cross my mind. I had the CAS set the way it was when the motor was delivered. I probably got a dang piece o' crap motor to begin with, because it came from Osaka ultimately (long story).

I'm thinking what Kamin said is probably the case.

[accel junky]

if your PCV blew out its definatley rings.

how you blew them apart with a 12ish AFR is beyond me. thats pretty hard to do running that rich. id do a leakdown test asap to verify tho.

sorry for the luck. time for a 26

what was your fuel setup? what about engine managment?

Fuel setup: PE 550cc's, SAFCII. I had a PFC but it was shorted so its currently getting repaired at Apexi of Japan.

[Joe]

SAFC?ding ding ding ding

that thing wreaks HAVOK on ignition maps when you use it to tune a heavily modified engine (wich yours was)

[goofynick6]

I'm thinking the safc hurt you, plus the turbo sounds like it was dealing with an enormous leak to spool that slowly, meaning it was spinning way too fast and out of its efficiency range = super hot air and that's just plain bad.

Sorry to hear man, that really sucks.

NIck

[y3llows14]

Sorry to hear bro. I know how it sucks to have one thing messed up after another. But yeah, part it out so I can get your intake manifold Would have love to race you too since we have similar setups.

[b16_madman]

Good luck on the rebuild. The devil himself isn't even on your side on this one.

Oh well, when it's all said and done, weeee..

someone said to add option d...

d.ka-t baby!

gaw man, if i can help, i will

I honestly thought you were joking in the email you sent me. And dude, the cluster still doesn't work? I think you should part it out, and mod the m3

[sean8564]

Rebuild the motor but you might get a EGT gauge

[accel junky]

Rebuild the motor but you might get a EGT gauge

I thought about getting 1 just for the 6th cyl....

But I wonder how much for monitoring all 6 cyl individually?

[sean8564]

is you intake plenum made by trust or tophatperformance

[accel junky]

is you intake plenum made by trust or tophatperformance

Trust/GReddy

[sean8564]

ok because the one that tophat makes you last two cylinders will run rich

[Carl H]

ok because the one that tophat makes you last two cylinders will run rich

no thats wrong, any front facing plenum including the stock gtr makes the last 2 cyl run LEAN.oh and even tho everyone else has said this i will too, safc is poo poo.

[sean8564]

Sorry about that you are right it runs lean excpet for the trust for some reason dose not make the motor run lean from what i have been told.