99 S70 n/a Jumped timing belt, now replacing head

nyurch · Post by **nyurch** » 13 Apr 2015, 06:12

New vs old

nyurch · Post by **nyurch** » 13 Apr 2015, 20:21

Guys I was sent a vvt head.. what now? haha

Post by **Ozark Lee** » 13 Apr 2015, 20:49

Bummer. The front seals won't work with a standard camshaft and I think the oil passages got shifted around so even if you have the CVVT hub I still don't think it would work properly on your block. A phone call is certainly in order.

...Lee

Post by **stephansvolvo** » 14 Apr 2015, 12:26

whats the difference between the cvvt and vvt?

nyurch · Post by **nyurch** » 14 Apr 2015, 12:30

Yep, I confirmed it, wrong head so erie is sending one tomorrow and refunded 55 dollars for new head bolts. The engine was never fired, so I should be good with the gaskets? Thanks!

Post by **precopster** » 14 Apr 2015, 13:24

Head gasket will have crushed and mated with the unique texture of the first head.

I would replace it. Why the head bolt refund? They can be re-used.

nyurch · Post by **nyurch** » 14 Apr 2015, 14:36

They head bolts stretch esp when you are cranking them to 130 degrees.. no?

Post by **Ozark Lee** » 14 Apr 2015, 15:00

stephansvolvo wrote:whats the difference between the cvvt and vvt?

There is none other than the name. Technically Volvo calls it Continuously Variable Valve Timing, or CVVT but everyone pretty much knows what you mean when it is shortened to VVT.

...Lee

Post by **Ozark Lee** » 14 Apr 2015, 15:03

nyurch wrote:They head bolts stretch esp when you are cranking them to 130 degrees.. no?

They do. Volvo insists that you change them any time the head is off but guys that do this every day say you can get by with re-using them once. For a guy like me that changes out one or two heads in a decade (hopefully) I just buy the new bolts and then I don't worry about it.

...Lee

Post by **precopster** » 14 Apr 2015, 16:24

Volvo head bolts are not stretch bolts they are "torque to yield" Look on this forum for the definitions or google it. They can safely be reused at least once especially if new.