My buddy was driving my car tonight (roommate) and he was out doing his thing.. I asked if he wanted to drive my car since he usually does but hasnt since the major fixing.. and he had some trouble getting my car into 4th and it fell into second and the revs shot up over 7000, now this doesnt worry me since comp cams repeatedly took there ecotec car to over 8500 rpms on stock valvetrain and they had no problems and were amazed... the problem we have is that my car now sounds like a wrx... check the plugs they are clean not dented or hit or anything... we are thinking a bent valve... but no oil smoke or other smoke.. car runs fine just sounds like a wrx and there is a loss in power...
any input guys?
LE61T PTE6262 Powered 
ouch...... I cant tell yea...... ON a 2.4, I've seen the lifters shatter from the same thing....... While the Comp guys reved it up to 8500...... it wasnt a sudden JUMP..... it was a steady rev...... I'd pull your cam cover off, and look around...... before more things get damaged (the shattered lifter in the 2.4 damaged the cam, carrier, valve, spring......)
Good Luck..... and dont let him drive anymore.
SPD RCR Z -
'02 Z24 420whp
SLO GOAT -
'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
7000 rpm? hell i hit 7200 almost every day
the only way you could have BENT a valve is if it made contact with a piston... which shouldn't be possible unless your timing chain slipped (which shouldn't be possible... although, we are talking about phil....
)
could have BURNT a valve since i don't know what goes on with fuel in that situation on a stock J ecu... if it went lean at that speed it could very well have toasted an exhaust valve, especially if the ecu retarded a lot of timing. my advice, compression check ASAP and see whats up. if any one cylinder is 10 psi or more out of whack with the others, time to pull the head and take a look.
Arrival Blue 04 LS Sport
Eco
Turbo
Megasquirt
'Nuff said
and i never did understand how people manage to actually let the clutch all the way out on a downshift into way too low of a gear... i've put it in 2nd instead of forth a few times but ALWAYS noticed before i had even dropped the clutch halfway when suddenly there's too much drag and the revs climb faster than they should... sheesh, pay attention people
Arrival Blue 04 LS Sport
Eco
Turbo
Megasquirt
'Nuff said
Scarab (Jersey Jay 1.8T) wrote:and i never did understand how people manage to actually let the clutch all the way out on a downshift into way too low of a gear... i've put it in 2nd instead of forth a few times but ALWAYS noticed before i had even dropped the clutch halfway when suddenly there's too much drag and the revs climb faster than they should... sheesh, pay attention people
I don't understand either Jay...I've never done that either...well because my clutch pedal doesn't work
www.kronosperformance.com / 732-742-8837
You should get that checked
Scarab (Jersey Jay 1.8T) wrote:and i never did understand how people manage to actually let the clutch all the way out on a downshift into way too low of a gear... i've put it in 2nd instead of forth a few times but ALWAYS noticed before i had even dropped the clutch halfway when suddenly there's too much drag and the revs climb faster than they should... sheesh, pay attention people
same here... but thats exactly what he did.. pushed the clutch in once he noticed the revs shoot up... we'll check it today...
thanks guys
LE61T PTE6262 Powered
Your always breaking @!#$
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
SpeedRacerZ wrote:ouch...... I cant tell yea...... ON a 2.4, I've seen the lifters shatter from the same thing....... While the Comp guys reved it up to 8500...... it wasnt a sudden JUMP..... it was a steady rev...... I'd pull your cam cover off, and look around...... before more things get damaged (the shattered lifter in the 2.4 damaged the cam, carrier, valve, spring......)
Good Luck..... and dont let him drive anymore.
I think Brian is onto something here.
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
check the rockers and lifters
bent valve sounds like a possibility
98redcavz24 wrote:yup, bent a valve
nope...
a rocker popped off... took it out and screams like a raped ape again!
w00t all good thanks guys!
LE61T PTE6262 Powered
got lucky
2.4 woulda killed the exhaust lifters doing that , happened to my friend
My cousin downshifted my eco into second one time by accident, it actually slid the tires
. She wasn' t smart enough to realize you press the clutch back in. I just heard screeching tires and revs for about 3 seconds. I was less than pleased. Luckily I had no issues. Sounds like you are back to no good too.
2004 Cavalier. Razzi. (Sold)
1998 Corvette. Some mods.
1992 Typhoon. Lots of mods.
1994 Civic VX 44MPG
We gotta hit the track with this beast now. Keep it in the garage till then
yes I wanna see some track times from you.
It been a LONG time Phil.
"Growing old is mandatory. Growing up? Definitely optional."
sooo, when you going?
how much boost do you plan on running?
"Growing old is mandatory. Growing up? Definitely optional."
Brandoson - 13.82@99.88 wrote:sooo, when you going?
how much boost do you plan on running?
you know phil is a wussy , and wont admit your cav is faster brandon
LOL
QBE (73H 800573D 0N3) wrote:98redcavz24 wrote:yup, bent a valve
nope...
a rocker popped off... took it out and screams like a raped ape again!
w00t all good thanks guys!
you did get lucky,
my buddy missed shifted like that in his NX2000 and blew the motor(sr20de), well blew all but 2 rockers at the same time, literally shattered most of them. it was nuts
