PorscheFanatic202

...is a loaded question. What was I thinking when I pulled my engine and was it a good choice?

Also, (and mainly) what is that coating on the exhaust port on the head? See attached picture. Is it just a ton of carbon fowling deposited there?

I have the engine removed and was thinking of just a spruce up and cleaning but the more I look I think I need to rebuild. Thoughts?

PorscheFanatic202

And to add to previous...in the picture the layer of stuff is about 1cm thick. Hard to see from picture

7B944

Looks like the cermaic coating, as in this thread. The more knowleabe may wish to comment.
https://rennlist.com/forums/944-turb...t-ports-2.html

Reimu

Yeah thats the ceramic coating you're seeing thats thick
None of it looks to be very healthy though...

PorscheFanatic202

Specifically what about it looks unhealthy? Should it not be mishaps mis shaped like curved? I have no idea what a good one looks like.

PorscheFanatic202

Maybe new head or get it professionally redone

PorscheFanatic202

Also I don't know if this is second nature, but I found that although I couldn't find any m12 x 1.5 bolts 75mm long at the hardware store for mounting the engine on the stand, you can use the front subframe mounting bolts to mount the engine to the stand. I was proud of myself for that one. Ok I know I am probably not the smartest guy to be working on my car, but that one made me feel like a genius.

kev951

cannot rebuild the head, ceramic liners are not serviceable.

lart951

Ceramic is bad head is toasted sorry

PorscheFanatic202

So the ceramic on this head is toasted or are you saying in general, bad ceramic equals bad head? Or both.

refresh951

Yes. Bad head. Need to find a replacement head.

PorscheFanatic202

Thanks for your input. Glad I ripped this thing apart. Guess the head is coming off. Anything else I should do to this while it is out?

slap929

To quote Fast924s in another current thread "You already have the engine out, Full reseal, New rings and bearings, new guides and a valve job, Belts and rollers, might even wanna do the clutch while the engine is out, Then you'll be good for another 100,000" This can be a slippery slope if you start with upgrades... but thats also where the fun is

Pauerman

I have a 2.5L turbo head completely redone that was intended for one of my "long term" project cars, but I've changed direction and am going to a 3.0L block for it. If you are in need of a ready to go cylinder head, I have one available.

Shoot me a PM if you'd like to see pictures.

refresh951

I would definitely inspect the turbine as the loose ceramic may have caused some damage. Hopefully not but I would have a look.