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Sportster Motorcycle Motor - Top End Discuss Sportster Motorcycle Top End issues. Rockerboxes, Valves, Cylinders, Pistons, Rings, Lift Rods, etc...

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  #1  
Old 28th September 2005
vert306 vert306 is offline
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Default Torque specs, diagrams or procedures, manual?

just wanted to know where i can get a spec sheet, or diagram of the sportster engine, that shows the torque specs for doing the heads etc etc. anybody have a copy or know where i can get some info? much appreciated. thanks.
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  #2  
Old 28th September 2005
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They're in the factory service manual. You can get one from your local dealer.

If you need anything in a hurry i'll look it up for ya
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  #3  
Old 28th September 2005
vert306 vert306 is offline
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ya i know the dealer has one, i was just wondering if anyone had a copy on their computer for torque specs etc. my buddy is doing a head gasket replace on his 1996, and i was trying to help him out with pertinent info...
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  #4  
Old 28th September 2005
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I have nothing electronic. I don't even think it exists but maybe someone here has scanned it to their PC.
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  #5  
Old 28th September 2005
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If you are just wanting head torque procedure, here you go:

a. Tighten each head bolt to 96-120 in lbs (11-13 Nm)
b. Tighten each head bolt to 13-15 ft-lbs (18-20 Nm)
c. Loosen all head bolts.
d. Tighten each head bolt to 96-120 in lbs (11-13 Nm)
e. Tighten each head bolt to 13-15 ft-lbs (18-20 Nm)

Mark cylinder and head bolt shoulder with a line and
tighten bolts an additional 90 degrees.

Torque sequence for REAR cylinder (when looking down
at the top of the cylinder facing towards the front of
the bike).

1. UPPER bolt on LEFT side
2. LOWER bolt on LEFT side
3. UPPER bolt on RIGHT side
4. LOWER bolt on RIGHT side

Torque sequence for FRONT cylinder (when looking down
at the top of the cylinder facing towards the front of
the bike).

1. LOWER bolt on LEFT side
2. UPPER bolt on LEFT side
3. LOWER bolt on RIGHT side
4. UPPER bolt on RIGHT side
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  #6  
Old 28th September 2005
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Harley Cylinder Head Bolt Installation

Factory Method
For each cylinder head, start with head bolt numbered one. In increasing number sequence (1-2-3-4), tighten the head bolt in three stages.



1. Tighten each bolt to 7-9 foot pounds of torque.

2, Tighten each bolt to 12-14 foot pounds of torque.

3. Mark each head bolt and head with aligning marks. Tighten each bolt 1/4 turn (90 degrees).


Torque Wrench Method
For each cylinder head, start with head bolt numbered one. In increasing number sequence (1-2-3-4), tighten the head bolt in four stages.

1. Tighten each bolt to 7-9 foot pounds of torque.

2. Tighten each bolt to 12-15 foot pounds of torque.

3, Tighten each bolt to 22-25 foot pounds of torque.

4, Tighten each bolt to 38-42 foot pounds of torque.
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Old 28th September 2005
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Default Just incase...




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  #8  
Old 29th September 2005
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thank you very much for all the input. that's exactly what i needed.
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  #9  
Old 25th October 2010
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Been following this post since we are at a similar spot in top end repair. Put one side back together today. My husband says he feels that these values are too light. Any comments on why they wouldn't be tighter? J
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  #10  
Old 26th October 2010
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Quote:
Originally Posted by skiponies View Post
Been following this post since we are at a similar spot in top end repair. Put one side back together today. My husband says he feels that these values are too light. Any comments on why they wouldn't be tighter? J
These value's are straight out of the factory service manual. I wouldn't deviate from them. Does he think they should be tighter or less tight?
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