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1928 6 clyinder block or engine
#1
Just popping in
Just popping in

2dayistheday
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My block has broken threads for the head studs between #4 & 5 cylinders, bummer! So I'm looking for a block or whole engine to rebuild. What years are the 6 cylinder blocks interchangeable? I'm mid east coast in Delaware.

Posted on: 7/8 20:18
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Re: 1928 6 clyinder block or engine
#2
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Packard Newbie
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Hi 2dayistheday,

Would it not be possible to drill out the 'broken threads' and put inserts in, then replace your head bolts?? When I had my engine rebuilt the machine shop found that a previous 'mechanic' had applied Loctite to all the head studs. Some came out and some broke off, but they were able to use inserts in the sheared off holes and I have not had any issues related to this since. Might be easier than replacing the entire motor, unless, of course, yours are such that they are allowing coolant and oil to mix, or coolant to get into your cylinders. Chris.

Posted on: 7/8 20:48
'If you think you can, or you think you can't - you're right!' Henry Ford.
1939 Packard Six, Model 1700
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Re: 1928 6 clyinder block or engine
#3
Just popping in
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2dayistheday
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Home away,

Good idea, but... I tried to install a Heli-coil into the hole, the tap only required light figure pressure to thread it. The "repaired" hole is very loose. I've put it bask together trying to get some driving in during the summer. But it does not hold a torque (will take 60 lbs, but is soft and loosens with use). The engine was sleeved back in the '80's and my belief is that the block is fractured in that area between the water jacket and head and sleeves. Not much material at all there to put a thicker thread sleeve, even if the block is whole!

Posted on: 7/9 7:47
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Re: 1928 6 clyinder block or engine
#4
Home away from home
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Tim Cole
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If you read the instructions, red Loctite will be rendered inactive by careful application of heat. Even if they go ahead and break off a stud welding a bolt to the stud should shrink it enough to come out. As well, simply putting some weld onto a frozen stud will heat it enough to neutralize red Loctite.

These methods are a lot safer than risking cracking the block using back yard methods.

Posted on: 7/9 8:14
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