ONE BAR

I'm considering the installation of the x51 powerkit on my 2013 991.1. The car has 7200 miles on it currently. What would the break-in period period be?
Thanks

Jaws1

The time it takes to get from closed throttle to WOT, I suspect. I don't know why there would be any break-in. The engine itself is already fully broken-in.

9ELOVIN

The power kit does not include any engine internals. What would there be to break in?
Carrera X51 Powerkit
Increases performance to 430 hp. Contains:

• modified cylinder heads and camshafts
• newly developed variable resonance intake system featuring 6 plus 1 switchable valves
• center radiator
• Optional Sport Exhaust System with specially designed dual twin-tube tailpipes
• revised engine control unit including new engine compartment styling with a titanium colored cover and carbon inserts

subshooter

Why is breakin only limited to engine internals? Aren't there moving parts associated with the power kit? I suspect the X51 upgrade package would come with some guidance in this area.

Code

Yes. See 9ELOVIN's post above.

@ One Bar, I would guess that an easy 500 miles and an oil change after would be sufficient.

koala

Same advice for a brand new car, too. Get the oil up to operating temp, drive it hard.

Needsdecaf

All new cylinder heads certainly qualifies as engine internals.

LexVan

We had a Rennlister do the PowerKit on his 991.1. There is a break in procedure. I'm sure he'll chime in soon, or I can search for it later.

subshooter

I saw that including his quotes which was why I was challenging him.

I agree completely on a new Porsche engine but let's not get into that debate again. The only thing that gave me pause was that the modification is a retrofit even though it is from the factory.

Agree but don't the cam shafts count as well?

bwiele

Search for a thread started by randr about the powerkit install. He had some specifics on what the recommended break in process was after his installation was done.

LexVan

I found it, ONE BAR:

https://rennlist.com/forums/991/9721...-1-update.html

ONE BAR

Thanks LexVan et. al.

bwiele

This is the one I was thinking of:

https://rennlist.com/forums/991/1000...-suncoast.html

you can read it all or just skip past a bunch of the back and forth and go to post #132 where randr talks about the post-install pick up and break in guidelines.

LexVan

ONE BAR-

Here's a very good read, too:

https://rennlist.com/forums/991/9166...-decision.html

Carrera2RS

Modern engine construction does reduce the need for breaking in, but imo it always makes sense to keep high throttle loads light for 500-1000 miles. Cams will need to run into followers and I assume they will use new followers as changing cams with run in to different cams is a bigger ask