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#1
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Timing Cover Helicoil
Quick question. What helecoil and drill bit do I need to put some real threads for the oil pan bolts on the front timing cover?
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-- Sam Agnew Where you come from is gone; where you thought you were going to, weren't never there; and where you are ain't no good unless you can get away from it. Ministry - Jesus Built My Hotrod |
#2
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You need a 5/16X18 heli kit and if I recall right off the top of my head a 25/64 drill bit, but double check me on that!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#3
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heli -col makes a kit every thing needed is in the kit.
Just buy it for the original bolt size. |
#4
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Yep, buy the whole kit. I do every time I need a size I don't have, now I have a drawer full of the most common sizes and they come in extremely handy in those emergency situations. Usually comes with a selection of various length thread inserts. WAY better than the original threads in an old timing cover. Use the factory torque spec if possible, with an oil pan tighter doesn't always mean better ... just bends the pan.
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#5
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As I mentioned on another thread, the coils can be cut to length successfully for blind, shallow hole applications with a sharp pair of diagonal cutters and dressed carefully with a stone or sharp file.
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#6
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In a pinch and seing as where you live Sam if it's only one bolt hole that needs repair it may just be best to go up to the next metric size bolt.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#7
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If your engine is still together, you can run a 3/8 NC tap right through the stripped timing cover threads and use a 3/8 course bolt in that hole.
It's ghetto, but it works. Good luck, -Abone.
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Daily Driver Model A Ford. 389 Pontiac w/6-71. 10.80 @129.5 1933, 1934, 1936 and 1940 Fords, also Pontiac powered. |
#8
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I've always found it was best to start all the pan to cover bolts before tightening the cover to block bolts. I would also tap the pan forward before tightening the pan bolts.
Anti-seize on the studs and bolts around the water holes is a good idea too. .
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. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
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