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April 10th, 2010, 10:20 AM
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#1 |
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Newbie
1999 Mustang GT
Join Date: Apr 2010
Location: Eastampton, NJ
Posts: 28
 iTrader: 0 reviews
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bad night at the track need some advice
so it was my 4th run of the night went to shift into 4th but the gears grinded and the engine over reved, now have a choppy idle, and smoke coming from the exhaust, wats the damage? i checked my oil it seemed good, my car made it home with no overheating, doing a compression check in a few mins, wat should a good compression read for stock sohc 4.6? Thxs in advance
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April 10th, 2010, 10:27 AM
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#2 |
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MM Fanatic
2000 gt
Join Date: Feb 2009
Location: La grange, KY
Posts: 4,259
iTrader: 2 reviews
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Compression should be in the 170 range. Bet you bent a valve or something related.
__________________
 Procharged 2000 5 Speed BAB GT, built motor, blower cams, speedy dyno tune 412 hp, 450 rw tqHARDCORE CREW BRIGHT ATLANTIC BLUE CREW #1 MEMBER |
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April 10th, 2010, 10:33 AM
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#3 |
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!FACEPLATED!
 
2002 Mustang GT
7.84 @ 86.01
Join Date: Jul 2008
Location: Upper Michigan
Posts: 12,917
 iTrader: 13 reviews
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how long were you on the rev limiter when your shift got messed up? whats your limiter set at??
__________________
 MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK
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April 12th, 2010, 12:34 PM
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#4 |
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Newbie
1999 Mustang GT
Join Date: Apr 2010
Location: Eastampton, NJ
Posts: 28
iTrader: 0 reviews
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i did a test and all but 6 were around 175-185, 6 was at well zero, dropped some oil in
to see if it was the piston ring but no luck, then started to think it was the head gasket but the other pistons were fine, so i took off the intake manifold and had my gf hold the ignition while i observed the intake valves and number 6 was not moving, so yea bent valve  wat do i do from here? can i just replace the valve? or is it better off just dumping some money on it? wat else should i look for while im ripping the heads off? any good articles for the how-to of head removal or any tips to make it less painful mainly with timing chain? |
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April 12th, 2010, 12:47 PM
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#5 |
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Hardcore Enthusiast
2000 Mustang GT
Join Date: Jan 2010
Location: South Florida
Posts: 1,968
iTrader: 0 reviews
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trick flow heads?
If you have the money i would do that since the heads will be off anyways. |
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April 12th, 2010, 12:57 PM
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#6 |
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Newbie
1999 Mustang GT
Join Date: Apr 2010
Location: Eastampton, NJ
Posts: 28
iTrader: 0 reviews
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yea i was thinking about it too lol, so bent valve seems about right?
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April 12th, 2010, 01:00 PM
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#7 |
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Hooo Ha Ha
1997 Mustang GT
11.65 @ 115
Join Date: Apr 2009
Location: Pasadena MD
Posts: 9,743
iTrader: 10 reviews
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That would cause it. How much money can you dump? If you want you could just build a new motor from the ground up.
Or if you dont have THAT much, but some TFS heads and some nice cams
__________________
 410rwhp 520rwtq @ 12.9 psi |
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April 12th, 2010, 01:00 PM
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#8 |
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Hardcore Enthusiast
2000 Mustang GT
Join Date: Jan 2010
Location: South Florida
Posts: 1,968
iTrader: 0 reviews
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if you have no compression, and the valve is moving, it probabl made contact with the piston and bent and now will not move.
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April 12th, 2010, 01:07 PM
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#9 |
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Newbie
1999 Mustang GT
Join Date: Apr 2010
Location: Eastampton, NJ
Posts: 28
iTrader: 0 reviews
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any tips on removing the head? mainly for the timing chain? or a how to?
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April 12th, 2010, 01:35 PM
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#10 |
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Enthusiast
2003 vert gt
12.703@ 107.65 KCIR
Join Date: Oct 2006
Location: Colorado Springs CO
Posts: 663
iTrader: 0 reviews
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same thing happend to me but mine ended up being a broken valve spring. good luck man w/the fix
__________________
2003 vert gt 2v teskid build 12.7 @ 107 (SOLD) 1989 mustang lx 92gt short block w/gt40p, explorer intake, 65mm tb, 373 gears, 76mm C&L maf, tubular K-member 14.15 @ 94 (5000' above sea lvl) |
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April 12th, 2010, 01:39 PM
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#11 | |
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Enthusiast
2003 Redfire Mustang GT
before new mods - 13.60@101.40
Join Date: Jan 2010
Location: Ohio
Posts: 500
iTrader: 0 reviews
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have fun with that - its a bitch and a half
__________________
 MY GARAGE MM Bracket Racing Crew Member #2
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