New head, setting CVVT or not?

850T5Ritalia · Post by **850T5Ritalia** » 21 Sep 2020, 02:20

Hey,

I placed a cylinder head from another car on my engine due to warping of the old head.
The new head came with the cam gears still on, including a Intake CVVT hub still installed. Now I was wondering, does this mean I dont have to set up the CVVT? Just put it on the marks with the locking tool and slip the cambelt on?

Thanks

Post by **abscate** » 21 Sep 2020, 04:34

Take the CVVT hub off and out your solid cam hub back on the Intake cam. I don’t think you can leave the pulley loose , doesn’t sound like a good idea.

850T5Ritalia · Post by **850T5Ritalia** » 21 Sep 2020, 05:10

abscate wrote: ↑21 Sep 2020, 04:37 Take the CVVT hub off and out your solid cam hub back on the Intake cam. I don’t think you can leave the pulley loose , doesn’t sound like a good idea.

Sorry I might have made things a little confusing haha. My car is '04 V70 with an intake CVVT. So the new head is the same head with the same CVVT setup as the previous head. The new (used) head I bought came with the CVVT hub still installed on the cam. My question is if that means I can just drop the cam with CVVT hub in without having to reset the CVVT?

Post by **SuperHerman** » 21 Sep 2020, 10:58

Two things: 1) You must use the cam cover that came with the new head. You CANNOT use the original cam cover - cam covers are married to the head. Donor head and Donor cam cover. NOT donor head Original cam cover.

2) You should be able to use the cam that came with the new head, it is preferable as it has worn to the head and cam cover. Whether you have to reset anything is determined by how your timing lines up. Under either scenario you have to set timing the same way. I would imagine the CVVT should be basically set in the same spot, these are highly machined items where consistency is the rule. Only way to know is to put it on the head and try - I would wager it will be spot on.

For replacing the front cam seal - you can slide it over the rear end and place it where it needs to be rather than remove the CVVT. Just don't drag it haphazard of the cam lobes where the seal can get nicked.

850T5Ritalia · Post by **850T5Ritalia** » 21 Sep 2020, 11:04

SuperHerman wrote: ↑21 Sep 2020, 10:58 Two things: 1) You must use the cam cover that came with the new head. You CANNOT use the original cam cover - cam covers are married to the head. Donor head and Donor cam cover. NOT donor head Original cam cover.

2) You should be able to use the cam that came with the new head, it is preferable as it has worn to the head and cam cover. Whether you have to reset anything is determined by how your timing lines up. Under either scenario you have to set timing the same way. I would imagine the CVVT should be basically set in the same spot, these are highly machined items where consistency is the rule. Only way to know is to put it on the head and try - I would wager it will be spot on.

For replacing the front cam seal - you can slide it over the rear end and place it where it needs to be rather than remove the CVVT. Just don't drag it haphazard of the cam lobes where the seal can get nicked.

Thanks! Yeah I got the whole set, Head, cams and cover. I already read somwhere that those heads and covers are line-bored so was gonna stick them together. Thanks for the tip on the cam seal. That was the only reason that got me debatting about maybe taking the hub off. I'm gonna install it as is and see how it will line up.