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#1
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Dammit.
Y'know, this old bolt is kinda tough going into the new intake.... SNAP!
Sent from my SM-G988U1 using Tapatalk |
#2
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It looks like the intake is still far away from the front cover did you already have the other bolts tight? The threads on that bolt look very bad hopefully it wasn’t like that before you installed it?
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#3
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OUCH !!
Been there and done that, many, many moons ago.
You only make that mistake once.......... |
The Following User Says Thank You to Joe's Garage For This Useful Post: | ||
#4
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Get the punch and drill out.. Every Pontiac gear head should have about 10 of these under there belt.. lol..
Oh ya next time run a tap in every threaded hole and grease them.. |
#5
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You must have a helluva grip between your thumb and shooting finger.
__________________
My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
#6
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I admit they were bad. Some had been flattened somehow, I ran them through an old tap to clean them up. The beginning of the bolt went in fine, then it snapped around 20 ft-lbs, i'd guess. I should've stopped when things got tight.
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#7
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1)Never install one without coating it with Never Seize.
2) Chase the manifold threads with a 1/4 inch bottom tap, and run a die over the bolt threads before installation. 3) Make sure the bolt won't bottom out in the hole due to rust and dirt, or being too long. Test the threads on it before installing it. I lay the intake on the gaskets just start the bolts. I tighten the by pass bolt until the rear of the manifold just barely lifts up, stop, it's tight enough. Then torque the manifold bolts. I've installed Pontiac manifolds dozens of times, if you follow those tips you shouldn't have problems snapping the 1/4 inch bypass bolts off. It's not a picnic trying to remove the broken off piece, and still save the intake manifold threads. Hopefully my post will help someone avoid the unpleasant task of removing the broken bolt. The other alternative is to use another undamaged crossover, and split the damaged water crossover from your intake. Good luck........... |
#8
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When I have broken bolts like that I just break out the mig welder and weld a bolt to it. Haven’t had one yet that won’t just crank right back out. Just did a stripped out brake caliper bolt recently.
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#9
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I like left handed drill bits. more reliable than easy outs.
__________________
GOOD IDEAS ARE OFTEN FOUND ABANDONED IN THE DUST OF PROCRASTINATION |
The Following User Says Thank You to KEN CROCIE For This Useful Post: | ||
#10
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The silver lining is that you can carry the manifold over to the workbench where you can have good light and a good position to work on it. The real bummer is snapping off a timing cover bolt in the block and getting it out by hanging from your toes in the engine compartment.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
#11
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Quote:
And yeah, start the intake bolts to heads first - but wait until this bolt is done before you tighten those. Plenty of blue sealant too. |
#12
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That long thin one is a spongy bastard, can be hard to get a feel for how tight it is.
What all those guys above said. Will probably come out pretty easy, might be able to just take a center punch and urge it counter clockwise enough to thread it out. |
#13
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Yep Antiseize!
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#14
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Yeah that sucks! I'm probably the only idiot that did it twice though. LOL. Getting a bolt out of aluminum is tougher than steel in my experience. I once got three Muncie shifter bolts out that were snapped, I could believe how soft the metal was. It requires patience!!
__________________
" Is wearing a helmet illegal" Mike Kerr 1-29-09 |
#15
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Haven't used a bolt in that location in decades. Instead I cut a piece of stainless steel threaded rod and use a stainless steel nut on the end of it.
Far less likely to break anything or pull the threads out of an aluminum water crossover..........
__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
The Following 2 Users Say Thank You to Cliff R For This Useful Post: | ||
#16
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not a high torque bolt. should be able to tread in by hand and snug it, that's it.
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1979 Firebird Trans Am 301/4spd (Now 428) 1977 Firebird Formula 400/Auto 2007 Grand Prix GXP 5.3L |
#17
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You'll break the next one if you keep on tightening to 20 foot pounds. All you need to do is snug it down (10-12 ftlbs) and THEN tighten the other intake bolts.
__________________
Jeff |
#18
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I agree Cliff, very good idea on any Pontiac intake. I think I'll try that on my next one.
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#19
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The key to getting that broken stub out is to start out right. Take the intake off. Use a dremel tool or a 3" angle grinder and disc or a mill file and get that stub as flat as you possibly can. Then center punch it just as perfectly straight as possible. Then use a nice sharp 1/8" drill bit and go all the way through as straight as you can. Then a 3/16". I think that bolt is 5/16" not 1/4" as mentioned, but keep making it larger until you can use an extractor to take it out. It is the factory bolt, so it isn't bottomed out. It should come out pretty easily. If you have access to left hand bits, it may screw itself out once you get to 3/16" size or larger. I have to deal with broken fasteners like this at lease once a week. Some come in that way, some I cause. We all make mistakes.
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#20
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Broke that bolt about 35 years ago. Once. Since then it's Thread prep and "Favorite cut Water Crossovers"
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