Turbo V6 Camaro

Hey I took my car to the track and the 1/8 mile ran great but after the car shifted into 3rd gear at 88MPH then at about 100 mph the RPMs just fall off for no apparent reason

I know it's a V6 but if you guy have any input that would be great, times are in sig.


attached is the scan of the log

usd2sing

iTrader: (15)

thats probably the area where u lifted the head and popped the gasket.
look how it richened up via the wb..

did u burn any plugs..this will look the same also.

EDIT:. also..im definately not a fan of 12.5afr with 20lb+ boost, regardless of the octane fuel your running or the plugs...scary in my eyes. (and 20* of timing)

ReEdit:...time for a compression check/leak down andy..LOL

daniel6718

iTrader: (36)

your flux compassitor kicked in at 88mph...

lol

Turbo V6 Camaro

i forgot to note HPT is reading the wideband .3 to .4 higher then it is.

the first pass it did it also and i let out of it (wasnt' watching the afr...)

the second pass i added more fuel and this time i watch the WB all the way down the track 11.7-11.9 never over 12.0

3 pass the HG blew out

usd2sing

iTrader: (15)

usd2sing

iTrader: (15)

but u may have lifted the head and pushed some water/coolant before the hg actual gave up the ghost and called it quits.
(welcome to my world and the larger hits of juice..grrr)

Turbo V6 Camaro

just pull the plugs #1 #2 #6 show signs of electrode melting other 3 are perfectly fine

I guess i need to add more fuel to those 3

Schantin

iTrader: (6)

11.7-11.9 is still on the "lean" side for the boost/timing you're running. I'd shoot for the 11.3-11.5 range personally.

Hopefully it's just a hg and an easy fix

Good luck.

Tiago

iTrader: (27)

melted electrodes? LMFAO!

sounds like Dan's and other opinons reflect what I've already told you

usd2sing

iTrader: (15)

LOL...yeah, he's a stubborn SOB...

*crack the record, park the car for another 2mo*
DOH!

lean is mean. but at what cost?

Turbo V6 Camaro

i'm not stubborn i ran the car where it always ran before 11.7-11.9, never had a problem with that. you guy are looking at the scan, I already told you HPT is reading off becuase i have no way to correct the voltage offset with HPT uner and this wideband

I watch the afr down the track and watch my screen for KR, none

so now i have to figure out why 3 are running lean and why my knock sensor are not picking up knock, only one plug had any indicaton of knock

an i boost on the street the day before up to 100 and pulled plug to verify, all was well

if you need to believe i did just to crack the some stupid record dan that's fine, I already told you that i'm seperating from the AF and one job offer takes me to place where the track is 200+ miles and 4500+ feet above sea level, I was going to try and real in my own personal goals in case the other job i'm trying to get don't work out

usd2sing

iTrader: (15)

LOL,
chill andy, i was goofin.
notice the pattern?
everytime you clip a new best you end up parking the car for repairs.
=====

continuing on.
just a thought, thinkin outloud here:
are u using the paper gasket between the upper/lwr intakes, with the oring coolant seals?
may be lifting and bleeding coolant

Turbo V6 Camaro

yup paper gaskets, is there something better? iv'e never really trusted that upper intake and TB gasket

the last 2 times the car was down = not my fault. this time it probably is

I just got in from looking at the car the passenger side knock sensor it broke off not the part that goes into the block the part the wires comes out of don't know how or when but i bet that's some of the problem. just hope i didn't roast any rings if so thats a easy fix, considering lol

live and learn i guess, I'm switching to your tune also this one is pissing me off and is a PITA

#1 buy injectors (2 walbro and 70PSI fuel = need larger injectors) I don't want to take the fuel psi any higher then that

Dan I'm going to get a leak down tester, can i replace the HG and use that to check the rings before i put the whole topend back on the car?

usd2sing

iTrader: (15)

u/l intakes..
well, my nitrous 6'er doesnt use a gasket anymore, for about the past 12mo or so.
i had them both milled to match (lost 3mm total) and then i use some good ole yamabond.
actually spread the gunk with a fine paint brush around the ports. kinda of a bitch to split but it holds well enough, granted that ride isnt turbo'd/boosted.

i'd personally do the comp/leak down as the car sits, then again after the hg install, it only takes an hour.

and that test tune i sent you will be null/void if u upped the fp and inj bro.


*****MODS*****
sorry if we're going out of bounds here as this platform isnt supported.
but this guys ride kicks ***.
(and would be clippin 10's easy if he dumped that POS verter..LOL)
we have many other boosted 6'ers here on tech that may have the same situation arise, good searchable link.
thanks

chetmo

iTrader: (10)

hope everything is well andy! badass though dude! glad to see ya over here atleast dan.

Turbo V6 Camaro

me too, i really can't do anything as most of my stuff the movers took away and my air compressor is at my parents house LOL other wise i would already have the heads off but i'm moving this week lol

chetmo

iTrader: (10)

location of said moving area?

Tiago

iTrader: (27)

Andy,

stubborn


injectors at 150% of capacity - fail
too much timing, even if no KR shows - fail

Doesn't matter how you ran the car before, you're making more power, and running full 1/4 mile instead of 1/8. More power and longer pulls put different stress on motor, this requires different tune!

plugs told the real story...