Yay! It's here!

[ermax]

Originally Posted by s30series

Uhhhh, cross hatching should absolutely not wear away.

Any engine I’ve ever rebuilt goes back together with fresh hash marks but when it comes apart they aren’t there. Sure you can “see” a pattern but it isn’t physically abrasive anymore. I don’t see how the hash marks wouldn’t wear away with the rings flying past them a bazillion times. The only thing debatable is how fast they wear away.

[s30series]

Originally Posted by ermax

Any engine I’ve ever rebuilt goes back together with fresh hash marks but when it comes apart they aren’t there. Sure you can “see” a pattern but it isn’t physically abrasive anymore. I don’t see how the hash marks wouldn’t wear away with the rings flying past them a bazillion times. The only thing debatable is how fast they wear away.

You just said it yourself...you absolutely should see cross hatching in a cylinder bore. Just because you can't feel it with your fingers doesn't mean it's not still there..... there's a reason it exists.....

[2020BRZtS]

Originally Posted by MisterGoober

Also provide strict instructions for nobody to drive the car. Since it will be one of the first at the dealership you wouldn’t want anyone else to test drive it.

If the car is already sold they shouldn't let people near it. The only one that should have driven it is the one who does PDI. My tS was backed into a reserved spot with a big red bow on it. They didn't wash it until I looked over it and I swear it didn't have the new car smell until after they detailed it.

[Jaylyons1]

My dealer has a few here in Hawaii. 2 are sold; one is a demo. I got to drive the demo while I'm waiting on mine that I ordered back in July. Apparently, since I wanted WRB, it's taking forever. May be able to get a Sapphire sooner.

[ermax]

Originally Posted by s30series

You just said it yourself...you absolutely should see cross hatching in a cylinder bore. Just because you can't feel it with your fingers doesn't mean it's not still there..... there's a reason it exists.....

Good to know. Next time I rebuild an engine I will ignore the service manual and skip the dingle berries.

But yes you are right, they are there for a reason. To seat the rings during break-in. If they lasted the full life of the engine they would continue to eat at the rings.

[s30series]

Originally Posted by ermax

Good to know. Next time I rebuild an engine I will ignore the service manual and skip the dingle berries.

But yes you are right, they are there for a reason. To seat the rings during break-in. If they lasted the full life of the engine they would continue to eat at the rings.

Huh?

You need a new service manual if you think cross hatching's job is only to seat rings....and I hope you're just a shade tree and not a professional

[ermax]

Originally Posted by s30series

Huh?

You need a new service manual if you think cross hatching's job is only to seat rings....and I hope you're just a shade tree and not a professional

I’m not saying that it’s the only reason. Break in is one of them though. The abrasiveness of a fresh hone drops with time. You said it yourself, just because you can’t feel them with you fingers doesn’t mean they aren’t there. They obviously can’t keep the same level of abrasiveness indefinitely. No I am not a professional mechanic but I think just about everyone with elementary level of education knows that when you rub steel over steel something is going to wear.

[azndavepgh]

[FrickingReallySlow]

You’re doing the tear down and unboxing on YouTube right?!

[AK2112]

Originally Posted by Jaylyons1

My dealer has a few here in Hawaii. 2 are sold; one is a demo. I got to drive the demo while I'm waiting on mine that I ordered back in July. Apparently, since I wanted WRB, it's taking forever. May be able to get a Sapphire sooner.

I’m on the big island for vacation and saw a wrb limited fresh off the truck at the Subaru Hyundai dealer near Kona.

Looked great. Later went on their website and saw they have a $1950 markup on it. Ouch.

[JD001]

Originally Posted by Jaylyons1

My dealer has a few here in Hawaii. 2 are sold; one is a demo. I got to drive the demo while I'm waiting on mine that I ordered back in July. Apparently, since I wanted WRB, it's taking forever. May be able to get a Sapphire sooner.

WRB is a very special paint, it goes through the rally temples of the world before it gets a blessing to be applied..

[s30series]

Originally Posted by ermax

I’m not saying that it’s the only reason. Break in is one of them though. The abrasiveness of a fresh hone drops with time. You said it yourself, just because you can’t feel them with you fingers doesn’t mean they aren’t there. They obviously can’t keep the same level of abrasiveness indefinitely. No I am not a professional mechanic but I think just about everyone with elementary level of education knows that when you rub steel over steel something is going to wear.

Right- specific tolerances are built into blueprinting a motor. The cylinder wall to ring to piston skirt tolerances are designed in mind to retain crosshatching a long as possible to help with oil flow up the wall

All I'm saying is your explanation of rings wearing away cross hatching is wrong....it should never be worn away by rings. If it is, tolerances we're too tight in a rebuilt motor and you will at some point have wall scoring with heat cycles..... especially if you get in a cold car and redline it near instantly.

[trippinbillies40]

Can we not turn this into another thread of S30 solely being here to argue with people?

[weederr33]

Originally Posted by trippinbillies40

Can we not turn this into another thread of S30 solely being here to argue with people?

Agreed!