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TR6 TR6 Timing Cover Fasteners

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erstearns

Jedi Trainee
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Didn't pay enough attention when removing timing cover to replace seal. Of the 10 bolts/screws that came out 7 are of the slotted head variety, 5 short and 2 long. There are two hex bolts of the same length and number 10 is MIA (I assume this is the short screw headed bolt referred to in manual whose location is critical, as in bottom left hole).

Did the PO replace some of the short slotted screws with longer ones? Other than the short one indicated in the manual is there any real reason to worry about the length? Why the slotted head (panhead?) versus typical hex head for some?

The 2 studs are in correct location in block and have not been removed.

Common sense can lead me to the correct answer hopefully but curiosity causes me to ask for sage advice from the board. Thanks in advance.
 
G

Guest

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Guest
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Some bolts go into the block while some go only into the front plate. I changed all mine to hex-head bolt, with lock washers, in the appropriate lengths. A few from the factory came with Allen-head bolts. Keep it simple, just remember which lengths go where.
 
71tr

71tr

Jedi Warrior
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Similar to Bill, my original engine had a mix of hex and slotted fasteners. After the rebuild I used all new stainless hex bolts w/lock washers. There are only two lengths required, say 1" and 1/2" and it becomes obvious where they go when you start replacing them.
 
Brosky

Brosky

Great Pumpkin
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Eric,

What is said above about the lengths is correct. I decided to replace the slotted screws with countersunk Allen screws when I did mine over.
 

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erstearns

Jedi Trainee
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I seem to remember somewhere that it was mentioned that one of the two studs was critical in that it penetrated the water jacket. I can't find the manual that referenced that and what the particular issue was. If I recall correctly it had something to do with the length of the stud or bolt. Any idea what that was about?
 
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