Godless Commie

iTrader: (2)

Just ordered all parts except for the valve seats...

Now....where's my torque wrench?

patsmx5

iTrader: (16)

Sorry I only skimmed the thread, but curious, are the valve seats damaged to the point they can't be reground?

Reason I say this is the stock seats are very tough, I'd keep them if they can be reground back to good condition.

Godless Commie

iTrader: (2)

You are absolutely correct.

The thing is, I live in Istanbul, Turkey.
Getting parts over here is an ordeal.
Considering he fact that valve seats are fairly inexpensive, I thought it would be cheap insurance to have them at hand if the damage is extensive.

They have only been handled once. By "handled" Imean I really do not know if the butcher machinist ground or cut them.

I'll see once I have the head off and taken apart.

patsmx5

iTrader: (16)

Ah, gotcha. Good news is 98% of shops grind the seats. I bet they can be reground.

Good luck moving forward. Have you found a better machine shop to do the work? I feel your pain, I have had shotty machine work done before too and paid a premium for it. I now rebuild cylinder heads myself which costed a lot to buy the tooling to do.

Godless Commie

iTrader: (2)

And the saga continues...

I have been running the car with all new valves, seats, guides and new light double springs since my last rebuild.
Here is the funny part: Now, valve clearances are GROWING.
I checked the lash, and especially exhaust valves have too much, up to 0.42 mm.

What's interesting is, I am hearing the valves tick at low speed decel only.

Head will come off one more time.

Stealth97

iTrader: (5)

Godless Commie

iTrader: (2)

It was pretty much established that these valve related problems were caused by incorrect machining practices.
There are quite a few people here who race and otherwise abuse Supertechs with no problems.