4tehlolxz

So I have the head off my engine to do a head gasket change. While the head is off, I've been debating whether to get a valve job or not. My local shop says a full valve job is $225. Is this absolutely necessary? The engine has about 125k miles on it. Will it be fine for like another 20k miles? Or should I get it done while the head is off. The car is still N/A with plans to boost in the future.

germanmiata

Check the Valves for play and look for their visual condition. Port Vacuum test and if everything is alright call it a day

ElyasWolff

Tear down the head and inspect. You wont know until you do.

sixshooter

iTrader: (12)

Valve guides are an important wear item to get inspected and replaced if necessary.

jacob300zx

Miata valves will go forever, even after heavy valve stem leaks. Are you leaving a little power on the table? Probably. Will it start smoking on cold start after a couple of days of sitting? Probably. Will it run another 100k without it? yup

miatapilot

$225 is cheap! Most times it's $350-400.

ridethecliche

iTrader: (2)

Yeah, i was quoted 350 for it.... I passed because I didn't quite see the point yet.