Torque Specs for Exhaust Manifold Needed

Subghetto

Member
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2008 Nissan Rouge; Former 2002 Mazda Protege 5 owner
Does anyone know the torque specs for the exhaust manifold for the top part and the torque specs for the pre-cat I'am going to be installing the wagner shorty header today and I really want to take my time and not break bolts or studs off when I'am installing it. Is there an on-line place that shows the specs or do you think the manual that came with the car would have it?? Thanks.
 
The owners manual does NOT have that spec (not too many owners remove their exhaust manifold)...

If I was at home, I'd look at the service manual (a little large to fit into the glove box :p).

My Wagner came in today too....oh happy day.
 
19-28 N*m for the top manifold bolts

19-28 for the precat bolts
 
Last edited:
Dimitrios said:
The owners manual does NOT have that spec (not too many owners remove their exhaust manifold)...

If I was at home, I'd look at the service manual (a little large to fit into the glove box :p).

My Wagner came in today too....oh happy day.
Dimitrios -

When you get home, could you check your manual to see if there is a tightening pattern that needs to be followed when installing the manifold. Some times there is a sequence that needs to be done.

Thanks!! (thumb)
 
rktktpaul said:
Dimitrios -

When you get home, could you check your manual to see if there is a tightening pattern that needs to be followed when installing the manifold. Some times there is a sequence that needs to be done.

Thanks!! (thumb)

Paul..sorry for the delay; I've been out of town again.....

With the manual here in front of me, page 01-15-2, there is no indication of any bolt pattern tightening requirement. I'd imagine a reasonable "cross" or "star" pattern should suffice.

The torques specs are (as per uclap):

Manifold to head and precat to manifold flange bolts/nuts - 19.6 - 28.4 N*m (14.5 - 20.9 ft*lbf)

I also ordered a set of ARP studs to replace the stock ones.
http://www.awrracing.com/store/product_info.php?cPath=2_22_59&products_id=150

Also , I took a look at the Permatex anti-seize I have and I think I'm going to use it - I was going to go with nickel based, but I think it's a bit extreme to track it down (motion industries sells the stuff and I'm sure McMaster as well), etc. The silver-copper stuff should be fine.

Dimitrios
 
i would suggest tightening the top left, then bottom right first, then top to bottom for the rest of them.
 

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