05-03-2011
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#1
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Bent valves? or Droped a valve, Pictures inside!
So hey guys yesterday i was driveing my 1999 gst eclipse, just a 16g,fmic, 3inch exhaust. I turned a corner went to shift into second and it just died? Was running fine all day. Towed it home and pulled timeing cover and valve cover timeing was on, But ALL the rollers for the cam and spring were off on the exhaust side! They were just laying in the head! the intake side of the cams was perfect everything was good? Tryed putting rollers back on and only 3 of the 8 stayed on when i re did them and tighted down cam? what do you guys think happened? thanks hope i uploaded pics okay
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05-03-2011
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#2
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15min late to the world
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Re: Bent valves? or Droped a valve, Pictures inside!
Yes the belt may be in 1 piece, but I bet the timing marks will not line up. I would guess the balance shaft belt let the ghost out or the auto tensioner failed. If you turn the motor over my hand and look at the cam gears with both pins up and the timing marks pointing at each other in the middle of the cam gears you can look down at the crank pulley and the timing marks should line up with 0 on the front cover.
~John
__________________
Moon taxi: 9.45@156.9 mph 41psi 2011... Letting people down sense 2012.
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05-03-2011
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#3
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by Pushit2.0
Yes the belt may be in 1 piece, but I bet the timing marks will not line up. I would guess the balance shaft belt let the ghost out or the auto tensioner failed. If you turn the motor over my hand and look at the cam gears with both pins up and the timing marks pointing at each other in the middle of the cam gears you can look down at the crank pulley and the timing marks should line up with 0 on the front cover.
~John
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I think you hit it dead on, before i pulled valve cover i tryed turning it over compression was 0 and seen strings in the timeing cover, so if i redo the timeing and "say" my head is good, hould i be able to salvage the block even tho balance shaft belt broke?
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05-03-2011
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#4
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Join Date: May 2010
Location: Glendive, Montana
Drives: 91 GVR4
Posts: 585
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Re: Bent valves? or Droped a valve, Pictures inside!
I had the teeth on the timing belt on my 90 laser sheer off on the crank gear. You could crank the motor over by hand but the cam gears would not move. But when I took off my Valve cover it looked just like that.
So its at least some timing belt or tensior failure.
__________________
DSM....Because broken timing belts, cheap interior, transfer case leakage, and crankwalk is to weed out the weak.
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05-03-2011
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#5
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by Perkul8r
I had the teeth on the timing belt on my 90 laser sheer off on the crank gear. You could crank the motor over by hand but the cam gears would not move. But when I took off my Valve cover it looked just like that.
So its at least some timing belt or tensior failure.
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Yea i think both Timeing belt and balance shaft, thanks for the info guys
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05-03-2011
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#6
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15min late to the world
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Re: Bent valves? or Droped a valve, Pictures inside!
Yes the short block will be ok with a timing belt skipping or breaking. The pistons will have some marks but you just need to rebuild the head, or buy a used one and bolt it back together.
~John
__________________
Moon taxi: 9.45@156.9 mph 41psi 2011... Letting people down sense 2012.
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05-03-2011
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#7
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
okay cool i think i'm going to pull the head today or wensday, i'll post some pics. What should i do for a head gasket and studs? kinda off topic but i have a 16g and wanna run e85 and go around 350
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05-03-2011
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#8
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Tournaments Won: 3
Join Date: Oct 2003
Location: Maple Grove, MN
Drives: Lancer and Durango
Posts: 7,017
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by 1999Gst
okay cool i think i'm going to pull the head today or wensday, i'll post some pics. What should i do for a head gasket and studs? kinda off topic but i have a 16g and wanna run e85 and go around 350
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A question of the ages. Many people say OEM is the way to go, some say MLS. I liked MLS myself, but have used OEM before.
Studs, get ARP L19s.
Just make sure you do your research prior to going down the hp goal road. While some guys make it look easy, it takes time, effort and Money. You cant spell Research without SEARCH. Search the site as there are many builds out there people have had great success with, that would get you around your goal.
__________________
Scientific theories are the most reliable, rigorous, and comprehensive form of scientific knowledge. This is significantly different from the common usage of the word "theory", which implies that something is a conjecture, hypothesis, or guess.
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05-03-2011
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#9
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Reynolds number user
Join Date: Oct 2003
Location: grove/tempe
Posts: 3,553
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by 1999Gst
okay cool i think i'm going to pull the head today or wensday, i'll post some pics. What should i do for a head gasket and studs? kinda off topic but i have a 16g and wanna run e85 and go around 350
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stock head bolts and the factory organic gasket will do you just fine.
__________________
07 Ducati Monster S4R
00 honda elite 50 (64 mph braH!)
05 malaguti F15
04 E55 AMG
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05-03-2011
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#10
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Kevin
Join Date: Jan 2004
Location: Shoreview
Posts: 3,356
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by Super Bleeder!!
stock head bolts and the factory organic gasket will do you just fine.
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Aren't new headbolts kinda pricey?
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Misses the Mitsu Community
Currently on Corvette #4
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05-03-2011
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#11
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Reynolds number user
Join Date: Oct 2003
Location: grove/tempe
Posts: 3,553
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by sleepydsm
Aren't new headbolts kinda pricey?
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I didn't think they were torque to yield bolts? I would reuse them on a mild setup.
__________________
07 Ducati Monster S4R
00 honda elite 50 (64 mph braH!)
05 malaguti F15
04 E55 AMG
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05-03-2011
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#12
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
Ok thanks, what should i do about the balance shaft? Is it that hard to delete them while motor is in car or should i pull it to pop those bearings out. My buddy has a 6 bolt that crank walked and it has the elimination kit on it. Could i use his kit or should i buy a new one?
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05-03-2011
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#13
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
All right head off! EVERY VALVE BENT! 6 BOLT TIME ! lol or should i get a head and say fuck it?
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05-03-2011
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#14
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
Soo more pics?
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05-03-2011
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#15
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Transmission destroyer
Join Date: Feb 2007
Location: Cambridge
Drives: G37, 91 TSi
Posts: 7,150
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Re: Bent valves? or Droped a valve, Pictures inside!
The head doesn't look damaged at all... If it isn't damaged, why replace it? Obviously have it gone through and new valves, etc though.
EDIT: Did Tom own this at some point? who the fuck else globs orange RTV all over stuff like that? 
__________________
Quote:
Originally Posted by scheides
I swing from the nuts of cold hard data. Anything less is a guess.
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05-03-2011
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#16
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Tournaments Won: 3
Join Date: Oct 2003
Location: Maple Grove, MN
Drives: Lancer and Durango
Posts: 7,017
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Re: Bent valves? or Droped a valve, Pictures inside!
Quote:
Originally Posted by goodhart
EDIT: Did Tom own this at some point? who the fuck else globs orange RTV all over stuff like that? 
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LMFAO i was going to say the same thing. hahaha
Orange RTV FTMFW!
Edit: does that look really odd to anyone else where the head meets the mani, almost like he stuck a 2g intake manifold on a 1g head? Looks like its dangerously close to a VERY large leak.
__________________
Scientific theories are the most reliable, rigorous, and comprehensive form of scientific knowledge. This is significantly different from the common usage of the word "theory", which implies that something is a conjecture, hypothesis, or guess.
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05-03-2011
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#17
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Shit Rocket Pilot
Join Date: Oct 2003
Location: Shoreview, MN
Drives: 2003 Evolution VIII
Posts: 7,752
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Re: Bent valves? or Droped a valve, Pictures inside!
Fix the valves and let 'er buck.
__________________
"If everything seems under control, you're just not going fast enough." -Mario Andretti
03 Mitsubishi Lancer Evolution VIII
Quote:
Originally Posted by Tachyon
Every minute you spend in your Evo, not in boost, is a minute of your life you'll never get back.
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05-03-2011
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#18
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
Yea but for as much as it is to have it gone though i can get a new 7 bolt head from a buddy for 100, and put my cams and intake mani on and go, Do you think the pistons are to bad damaged? will it lower my compression at all? or even run right? thanks
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05-03-2011
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#19
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Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
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Re: Bent valves? or Droped a valve, Pictures inside!
lol yea idk i got it and it needed a flywheel/clutch, did that 2 months later this. So should i put the 200-300 into it for a new headgasket arps and gaskets,even though the pistons have a little valve marks where they hit, or just grab a 6 bolt? even tho im low on funds.
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05-03-2011
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#20
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Join Date: May 2010
Location: Glendive, Montana
Drives: 91 GVR4
Posts: 585
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Re: Bent valves? or Droped a valve, Pictures inside!
The little marks on the pistons are fine. You can clean them up a little and run it. My Laser had some pretty good marks on the pistons and I just cleaned them up, put new head on and ran it. No need to swap out the motor if everything else is fine.
__________________
DSM....Because broken timing belts, cheap interior, transfer case leakage, and crankwalk is to weed out the weak.
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