Hey i bought some used gsr valves with about 80k (the dude said no more)
The guy changed them out just because he was upgrading. That dude is running 450hp so he knows what he's talking about.

Anyways, do these valves look normal to you??

 

Well your exhaust valves do look a little worn. I'm eyeballing around 140k miles on them?

i dunno lol

 

i mean he said that exhaust valves look like that all the time because its always hotter there and it always passes through all the junk so I'm guessing its ok.

Later give it some seafoam

btw he said that I could wool brush it down with some spray

 

i wouldnt touch those valves

 

why???

so on a 80k car the exhaust valves should look better than that?

 

what are your plans for the valves? are you going to use them to replace some bent ones? you can take them to a machine shop and they can clean them up real nice for you.

 

I wouldn't use a wire brush to clean them.

Send them to a machine shop for an acid bath - Better yet, you could just replace them?

 

yea replacing some bent one and the dude said I should toss all his in so all of them have same wear.

I mean do the exhaust valves usually look like that since they let out all the crap and are always hot?

btw any clue how much the machine shop will be?

 

Can someone post a picture of their exhaust valves?

 

well, when the valves are used yes they are going to have some deposits on them. If you are going to pull the head to change out the valves you might as well have a valve job done at a machine shop to make sure everything really is ok. It isn't possible to tell if the valves are good or not by just looking at photos of them. They have to be measured and checked out. A local shop around here charges about $300 I think to do a complete head, that means cleaning, resurfacing, valve job, etc.

 

thanks dude but I have no money for that now.
If my car ripped before, then if I grind them in, I should be good.

 

Why cant u wire brush them..? As long as u dont **** the seating face up, then why cant you. I mean if you use some brass or something super soft, i personally dont see whats wrong with doing it that way.

Most valves and valves seats arnt ground both at a 45 stock. Most are ground at like a 45 on the valve and 46-47 on the seat to ensure a seal. I dont know how honda does it, but i know thats how older heads are done. or just give them a good brake cleaner bath.

correct me if i might be wrong, i am no honda expert i just drive one and have some auto background.

 

Now a days valves are replaced, its easier, faster and more cost effective.

 

and with about 30$ in tools, i save majority of that 300$ because it was unnecessary spending.

let them soak in purple power for a couple days and you can pick and scrub the carbon deposits away, you should be good after that. you can use valve lapping compound or machinists blue to determine if the valve seats correctly. should hear a nice clapping sound when pushed in completely.

 

may be easier and faster, I don't know about cost effective

 

They should be media blasted and inspected by a machinist. Valves can be bent just a bit and an untrained eye wouldn't be able to tell. Also, this was already answered in the all motor forum.
Exhaust valves will look much dirtier than intake valves, what do you think they show on those stupid shell gas station commercials. They compare an intake valve on the car running shell gas, with the exhaust valve running the competition gas. People who have no idea about motors run to shell gas stations to fill up

 

When u pay a mechanic/machinist by the hour. It takes more time to ree grind the valve face, and flatten the valve head and check for proper seating. Then to just slap a new seat of valves in a head. Thats how its cost effective, the savings of time is passed on to the customer.

I do know about this, because this is what i am currently going to school for AIM Automotive Industry Management.

 

From what can be seen in the pics (which is not much) they seem OK. Stem wear does not appear excessive. Spin them in a drill for a quick & dirty check to see if they are bent. If you don't know how to grind valves & seats, they will have to go to a machine shop. You can't just R&R valves without a valve job as its going back together.

 

I too would have them cleaned before using. Also, I wouldnt use a wire wheel or anything, just take em to a machine shop. Shouldn't be too much cash to have a machinist do it.

As for how many miles are on them, it's hard to tell by looking at them. Lastly, just because the guy who sold them to you makes 450, doesnt mean he knows what he's talking about. I know of two people that are local to me that have had local shops build their cars and they dont know **** about boosting Honda's. HP does not = brains/know how.