Stripped Intake Thread
#1
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Guys I have no idea how this happened but the front (driver side) intake bolt hole on my TFS215 head is all chewed up, it kind of looks as if the metal just crumbled around the threads. My question is simple, what is the best way to repair this WITHOUT removing the head? And what is under that hole? Is it a blind hole or does it actually go deeper into the motor? I was thinking of doing a time insert.
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Worse comes to worse, Heli-Coil it. Just measure the bolt for depth and thread pitch and match a kit to it. Drill it out, tap it with the included tap and screw in the new threads. I did it on my buddy's lifter cup bolt.
Can get em at NAPA.
Can get em at NAPA.
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#7
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Pull the head unless you have a good way of keeping the aluminum shavings out of the lifters trays from which they will never get out.
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#10
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Found a photo with Google, check the small holes just above the pushrod holes in the photo. That is where the intake bolts come through so anything that you do to make chips will fall right into the lifter tray.
Link to photo
Link to photo
#12
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There is no doubt its not a blind hole, It goes sraight through to the lifters. Personally I woooood take a chance on it, the little bit of aluminum shaving you make are just going to drop into the oil pan. It can't get into anything.
#13
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????? what about the shavings that get past the oil pump screen and pushed into all the bearings? even if you did an oil change theres prob. more that will come down later while the engine is running
#15
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Just drill the hole out and install the timesert or helicoil then change the oil run the engine a few miles and change it again. The chips can only fall into the oil pan. They can't even get to the oil filter unless they are very very small, the oil pickup has a fine screen on it AND NOTHING is going past the oil filter.
Don't believe anything this guy above posted.
Don't be a *****. Honestly I woooodn't give you bad advice, I wooood do it to my car and i'm fussy as hell.
Plus if you use a little wheel bearing grease in the hole 1st all the chips will follow the drill bit OUT. DO IT..
#16
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get on ls1 howto or similar site,go to an intake installation section,if gm didnt put that red sealer around the intake bolts from the factory then i would say that its a blind hole cause they wouldnt want to chance vacuum leaks,i just cant tell you for sure cause i dont have access to any parts rt now
#17
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BS those shaving are not going into anything AND yes the holes goes straight through so stop fussing over this and do as I said.
Just drill the hole out and install the timesert or helicoil then change the oil run the engine a few miles and change it again. The chips can only fall into the oil pan. They can't even get to the oil filter unless they are very very small, the oil pickup has a fine screen on it AND NOTHING is going past the oil filter.
Don't believe anything this guy above posted.
Don't be a *****.
Just drill the hole out and install the timesert or helicoil then change the oil run the engine a few miles and change it again. The chips can only fall into the oil pan. They can't even get to the oil filter unless they are very very small, the oil pickup has a fine screen on it AND NOTHING is going past the oil filter.
Don't believe anything this guy above posted.
Don't be a *****.
#19
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WHAT DO YOU KNOW? NOTHING!