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Join Date: Dec 2002
Location: St. Petersburg, Florida
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Do these valves look bent to you?
F@#%^% 'in Exhaust manifold to cat bolts!!!!!!!
This whole valve thing has been pretty quick so far except for that 3 hours for the manif. and still one measly bolt remains. Now, that is off my chest. Hears the goods all of you that said I bent 4 or more...well see for yourself... ![]() ![]() Guess I shouldn'ta tried to crank her 8 or 9 times after she stopped ![]() Hey interesting to note. The teeth were stripped from the crank only so no movement was occuring at the cam. Just looky at those intake valves.
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83 944 white w/Boxster wheels Planned mods- custom leather interior, 968 antenna, soundsystem, 968 style rockers, clear sidemarkers
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The crap on those valves is, I believe, from a head gasket that was about to go......
Hey!!!!! The cup IS half full!!! ![]() ![]() ![]() All In All I am happy to be doing this job. I have found many things that were hidden from site, needed replacing, cleaning or repairs. If all is done correctly I should have LOTS of peace of mind.
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83 944 white w/Boxster wheels Planned mods- custom leather interior, 968 antenna, soundsystem, 968 style rockers, clear sidemarkers
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was this pix taken from inside the block, looking up thru the pistons?
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chance favors the prepared mind 1987 944 n/a 5spd. who remembers dial phones?. 'STOP FIXING THINGS ONE STEP BEFORE YOU BREAK SOMETHING ELSE" |
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Cylinder 1 is at far right
Pics are of block opened like a box from pass to drivers side. Head gasket (in situ) far right bottom bolt area is very crackly and krispy, like it is made of fried batter or something(for lack of a technical word)
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83 944 white w/Boxster wheels Planned mods- custom leather interior, 968 antenna, soundsystem, 968 style rockers, clear sidemarkers
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The valves were bent before the engine stopped. Your cranking may have bent them a bit more.
Welcome to the Bent Valve Club ![]()
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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Yeh,
I can't wait to make my "4 bent valve windchime" when they come back from the machine shop. Every P-garage needs one.
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83 944 white w/Boxster wheels Planned mods- custom leather interior, 968 antenna, soundsystem, 968 style rockers, clear sidemarkers
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Join Date: Feb 2001
Location: Viera FL
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I count 3 possible 4 bent
can see the impacts clearly on the pistons AJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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It's possible to have a bent valve, though it may not be noticable from a casual glance. The machine shop should tell you for certain.
All 4 of your intake valves are bent, exhausts are tough to call. I had bent all 4 of my exhaust valves without breaking a belt (but revving to 7200+ rpm often w/the old set-up) from valve float. The hydrolic lifters really don't like being revved past 7k or so, and the springs are certainly not stiff enough up there either, specially on the NA engine. Ahmet
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Cheers! |
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vott does ziss do?
Join Date: May 2003
Location: Seattle
Posts: 6,676
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What??? Bent valves??? And I thought I was just hitting the rev limiter!
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Quote:
Hell now you can call yourself a porsche mechanic! ![]() |
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Congrats on getting it apart. You're right the exhaust is a real pain. From the looks of things you were about 15,000 miles late on disassembly.
Yes, you need intake valves. I would replace all the valves,guides, and seals. Take a good look at the head studs I see alot of rust on some and would replace those. Also have the shop replace the freeze plug on the front if it's even still there. The pistons took a good punch and consult one the guru's here to see if necessary to replace. I would, but i'm anal. You have a long road ahead grasshopper $$$$$. You will need to reseal the front of the engine, drop the pan and muck it out and clean the screen, etc. pull the cooler and clean and re-seal, Replace the water pump! You do not want to have to do it later after you put everything back together and it siezes. Replace cap and o-rings on injectors, etc..... When all finished and she runs sweet you will have you're official 944 technical certification being there is no skin left on you're knuckles and the words you use the most start with an F. And then somewhere in the distance you will hear a muffled scream as another kitten goes down and know that someone, somewhere is about to embark on an adventure of epic preportions from which you just returned.
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'83 944 "Guards Red" New Everything (seems like) 16" 968 Wheels has never left garage (yet) |
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Whooohhhh FLA944, I don't need that much peace of mind..
Close though. Oil cooler is done water pump is updated No way in hell I am tackling the sump this time around Planning a: Thorough Cleaning and decarb of all engine components Front tens. and roller replace Inspect and poss replace lower bal shaft seal (noted a bit of oil on bottom of pan. All vacuum hoses - Goooodbyyeeee Gremlin And how about: PAINTING THE Cam Cover gloss Black with POR..in red? PAINTING the headers flat black? HEAD bolts definate replace? or just clean and oil?
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83 944 white w/Boxster wheels Planned mods- custom leather interior, 968 antenna, soundsystem, 968 style rockers, clear sidemarkers
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Yep, replace the studs.
Replace the intake bolts w/stainless bolts and washers and all bolts up top and belt covers w/stainless as well. Paint the cambox and head any color. I had some difficulty painting mine as the paint wouldn't stick due to magnesium content and it was too cold when I sprayed. redid it and looks ok I went with the rebuilders cast grey. I painted the intake w/aluminum coating and looks good. You will need to get the exh.man. blasted before painting/powder coating. Powder coat will last longer and not break down as header paint does. You can coat yourself with a kit and pop in your oven to cure. Good Luck, If you need anything (spanners,cheesehead sockets,etc..) just give a holler and I'll loan ya mine. Rick
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'83 944 "Guards Red" New Everything (seems like) 16" 968 Wheels has never left garage (yet) |
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NOOOOOOOOOOOOOOOOOOOOOOO, AHHHHHHHHHHHHHHHHHHHHHH, HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEE. It's like the twilight zone. I remember those days,... takin pictures of the head and block. Geez.
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{1987}944S - (SOLD). |
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Any news on this work yet TCMdocs944?, would be interesting to hear how you got on?
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924 Carrera GT Copy. |
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Man, Oh Man!
I just finished puting my engine back together (head gasket, 4 new exhaust valve guides, water pump, belts, water hoses, thermostat, yada, yada), and from the looks of your pistons you were on the verge of a head gasket failure. Look at the lighter spots on the pistons (5 O'Clock on #2 and #3, and 7 O'Clock on #1, #3, and #4). Sure looks like coolant was hitting the pistons. Did this car over heat before the timing belt broke?
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Cliff Hipsher '87 944 India Red '86 951 Kalahari Metallic |
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so you were in that 99% group...bet you didn't win the powerball lottery that week either
I seem to have a lot of luck...(almost all bad though)
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Tom Early '85 944 |
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Here ya go guys. I just started putting it back together yesterday. Though you might like to see my before and after shots.
BEFORE ![]() And here it is today AFTER ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
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vott does ziss do?
Join Date: May 2003
Location: Seattle
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WAY TO GO! And even turned an NA into a bona-fide turbo!! You are the MAN and NONE of us are worthy.
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Last edited by ronin; 07-22-2003 at 09:35 AM.. |
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