"Fixing" bent engine valve?

[TCSpooner]

Hi

I work at a BMW wrecker all we do is take apart old BMWs My advice is to go to the nearest Euro car wrecker and wait for them to toss a cracked M20 head usually they toss the valves with it. Now you have unbent valves. Simple and cheap.

[mmmjboner]

Originally Posted by TCSpooner Hi I work at a BMW wrecker all we do is take apart old BMWs My advice is to go to the nearest Euro car wrecker and wait for them to toss a cracked M20 head usually they toss the valves with it. Now you have unbent valves. Simple and cheap.

That's not a bad idea, but specialty auto recylcers in my area are a little scarce. I know of a couple euro shops that might be able to help, though. Thanks!

[millman52]

Here's the way I see it. Is the engine block worth less that $15.00 X 7 valves = $105.00. Then there is the gaskets/seals to have to purchase again if the straightened valves don't entirely destroy the remainder of the engine.

I wouldn't do it on a bet. Just my 2 cents.

[mmmjboner]

Originally Posted by millman52 Here's the way I see it. Is the engine block worth less that $15.00 X 7 valves = $105.00. Then there is the gaskets/seals to have to purchase again if the straightened valves don't entirely destroy the remainder of the engine. I wouldn't do it on a bet. Just my 2 cents.

Yeah I have decided not to try this. I'll be done with school for the summer here in a couple weeks so I'll be getting a job and buying a complete used head.

[rustamd]

where are you located?

[mmmjboner]

Originally Posted by rustamd where are you located?

Northern Indiana. Why do you ask?

[Normsthename]

The ones I straightened, I clamped in a 5c collet in my Lathe and tapped them straight with a chunk of brass and a hammer. I just eyeballed the runout

I did a similar thing on a motorcycle engine a few years ago. I was unemployed at the time and had no money, but had lots of time on my hands.....
I did'nt have a lathe, I just used a piece of hardwood with a hole drilled down it. I then placed the valve in the hole right upto the head. I could then rotate the valve to see the runout. Small taps with a block of wood on the head and I had them running straight as a die
Lapped them in and the engine fired up and ran like clockwork
All for the cost of a few hours, and a bit of head scratching!

Andy