SMM

Ok I have searched and searched. All I am getting is mixed answers, I also looked in the FSM.

Some people are saying they stripped the cam sprockets bolts when torquing to factory specs or have even broken cams.

This is what I have come up with.



Cam Cap Bolts:

Tighten: 1.4 (FOOT LBS) in sequence then to 8.7 (FOOT LBS)


Cam Sprocket Bolts:

123-130 ......really thinking only to do 90 ( FOOT LBS )

Idler Sprocket Bolt:

40-60 FOOT LBS



Others:

Crank Pulley 150 FOOT LBS
Chain Guides 17 FOOT LBS
Chain Tensioners 7 FOOT LBS

Promise Land

I think the Jim Wolf instructions for changing the cams also mirror the FSM specs.

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let5l1de

Stripped cam bolts and breakage?

Just use the fsm. You will be fine... Also, use the correct metric 6pt socket with cam properly locked or secure in place.

~mario

GR Performance

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SMM

^ Ya guys over on KA-T some of them torqued them to factory specs and they broke.

Tantwoforty

I used the fsm, everything went fine.
Its from the factory, they made 1000's of them like that, why wouldn't it work?
For cam bolts i used a crescent wrench to hold it, put a towel under the wrench when it wedges against the head or it will make a small dent. it wont hurt anything, but it will bother you.
for the crank pully i used the flywheel bolt wrench trick.

SMM

PER FSM:

Cam Cap Bolts:
1.Tighten to 17 INCH LBS first in sequence.
2. Tighten 80-104 INCH LBS

Cam Sprocket Bolts:
123-130 FOOT LBS

Idler Sprocket:
48-61 FOOT LBS

Crank Pulley:
105-112 FOOT LBS

Timing chain tensioners TOP & BOTTOM:
56-66 INCH LBS

Lower timing chain guides:
9-14 INCH LBS

Tantwoforty

Yeah that sounds right..
I was trippin on the cam cap numbers but then i realized inch lbs

let5l1de

Cam Sprockets:

Camshafts do break for many reasons. Typically, cracks may occur around the outside of the cam gear ridge.

Cams are usually a victim of some sort of abuse from heat, poor lubrication, misuse or severe internal problems prior to cracking.

I have never stripped the threads of a camshaft.



Idler sprockets:

Extreme care with proper thread engagement, lubrication and torque must be used when installing this piece.


~m
grp

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Mr. KA

First post, but I just wanted to chip in that I stripped the idler gear bolt with 50 ft/lbs (needing a helicoil) and the same went for the cam gears at 85 ft/lbs.

My motor was used and severely abused, but not turbo.

JDMRIDDAZ

On cam caps u don't need the tourqe specs cause it 11inch pounds
I use 1/4 ratchet witg no issue in 10yrs
And I use the oldskool tourqe wrench..
Less likely to strip cause u use tru force and watch a needle
Not a new clicking type..u can strip shit out easy
That's why I switched back to oldskool

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