Question about 1987 Mazda B-Series
How do I remove the head from this engine?
The procedure is similar to the one in pictures here for an honda engine: hondaswap.
You unplug sparks, remove the air intake assembly, exhaust manifold and hoses, remove plastic cover, undo first set of screw to remove valve train, and remove head.
After re fitting you will need to use a a torque wrench following head bolts torque specs.
To find out torque specifications and diagram for your vehicle, register here and download the repair manual.
This can also be found on the service manual with step by step pictures.
1987-1993 Mazda B2600 - Haynes Paper Repair Manual
Mazda Pickup Truck Repair Manuals: Chilton & Haynes
Posted on Apr 12, 2009
Since I cannot find the exact pictures of your model I am giving you a link which will give different pictures showing the step by step procedure of dismantling the engine head. I feel that the procedure are more or less similar.
Visit this link to get the pictures : http://hondaswap.com/general-tech-articles/how-change-head-gasket-lots-pics-71528/
I hope this will solve your issue.
If my solution proves useful please accept it.
Posted on Apr 12, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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Since you didn't say which engine you have, I've pulled torque specs for 3 different engines. Also, since I can't include a diagram showing the relative locations of the numbered head-bolt locations, it would be a good idea for you to purchase a vehicle specific repair guide that will show this info.
Take particular note about the TTY (Torque to Yield) bolts used on 2 of the 3 engines shown. It is said that new head bolts MUST BE USED when head is replaced or re-installed to obtain the proper torque.
B2500 4 Cylinder
Torque sequence: --------- ' 10 6 2 4 8
' front ' ' ' 7 3 1 5 9 ' -----------Step 1: torque in sequence to 51
Ft/Lbs Step 2: torque again in sequence to 51 Ft/Lbs Step 3: final
tighten all bolts an additional 90 to 100 degrees recheck final
torque in sequence *** CAUTION ***engine uses Torque To Yield head
bolts (TTY) that permanently stretch during the initial installation.
New head bolts must be used when cylinder head is replaced or
re-installed to obtain proper torque.
B3000 3.0 6 Cylinder
Torque sequence ---------- ' 6 4 2 8 '
' ' ' 5 1 3 7 ' ---------- Step 1: torque to 59 Ft/Lbs Step 2: loosen
in sequence (1) full turn Step 3: torque to 41 Ft/Lbs Step 4: torque
to 73 Ft/Lbs
B4000 4.0 6 Cylinder
Torque sequence --------- ' 5 1 3 7 ' '
' ' 6 4 2 8 ' --------- Step 1: torque cylinder head bolts in
sequence to 26 Ft/Lbs Step 2: torque cylinder head bolts to 56 Ft/Lbs
Step 3: turn cylinder head bolts in sequence an additional 90-degrees
recheck final torque in sequence *** CAUTION ***engine uses Torque To
Yield head bolts (TTY) that permanently stretch during the initial
installation. New head bolts must be used when cylinder head is
replaced or re-installed to obtain proper torque.
Good luck with this job!
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