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BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 10:26 am
by plohl
I have searched and haven't been able to find it, but does anyone happen to know or have any reference for the torque specs of the vvt cam wheel? For both the Torx fasteners, and the four M6 nuts on the front of the wheel. I have checked the nb8b service manual... nothing in there either.
Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 11:19 am
by manga_blue
Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 11:56 am
by plohl
Yeah, was going to use proof torque if I couldn't find the answer.
Had a feeling you'd be the one to reply though haha
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Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 11:59 am
by 1600Dave
Its in the NB8B service manual somewhere (at least the figures for the torx ones are, I would assume the others are as well). I looked them up a few weeks ago when I was re-assembling my engine, although I didn't remove the M6 ones as I didn't dis-assemble the VVT assembly. It proved to be a little pointless for me anyway, my torque wrench didn't read low enough for the torx ones...
If you don't have any luck beforehand, I will have a look tonight as the manual is on my home computer.
Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 12:51 pm
by slug_dub
From MT.net... The torque for the 3 countersunk screws on the front of the actuator is 34-52 in/lbs.
.....................
hurry up! *runs*
Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 1:58 pm
by manga_blue
plohl wrote:Had a feeling you'd be the one to reply though haha
Yeah, guilty. I can get a bit obsessive about measurements when I'm assembling engines.
However, apart from Fiats obviously, I've never broken an engine that I've rebuilt.
Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Tue Mar 08, 2016 6:55 pm
by 1600Dave
Looks like I was mistaken (partly). The factory service manual does indeed seem to be lacking the torque for the M6 ones. Perhaps it is regarded as a non-serviceable unit ?
vct.JPG
Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Wed Mar 09, 2016 9:29 am
by plohl
Thanks guys!
Dave - what manual do you have?
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Re: BP-Z3 (vvt) Intake cam wheel assembly torque
Posted: Wed Mar 09, 2016 11:53 pm
by 1600Dave
I believe it is the genuine Mazda factory service manual for the NB8B. It is a collection of dozens of pdf's each covering individual areas / components, with an index file to locate the area / file you need. I downloaded it from somewhere a while back - I'll try to find it again and post the link.