03 accent twin cam head

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Dave - 02 Jul 2007 13:01 GMT

I bought a 03 accent twin cam head from the junk yard for some cam software
testing I have been doing. I have a couple questions. (I knew the head was
trashed when I bought it)

1.) all the intake valves were bent.

I presume this to have been caused from the timing belt breaking.
I thought its more typical for the exhaust valves to get bent when a timing
belt breaks.

Is there another common reason these may have been bent ?
Are the intake valves getting bent more typical when the timing belt breaks
on these engines ?

2.) The valve keepers sit way down inside the head how do you deal with that
?

I used a tube between the valve spring compressor and the retainer to allow
me to take the valves out of the head. There was very little space to fish
the keepers out with a magnet. I was wondering how to get the keepers back
in place. Is there a trick to that or a special tool ?

It was hard enough for me to get the keepers back in with the soft springs I
use for testing, and those don't require the use of a spring compressor.

fortunately I don't really have to put this head back together, but it would
be nice to know if I ever changed my mind.

I would add that it seemed like a very nicely designed head.

thanks,
DaveV

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hyundaitech - 02 Jul 2007 18:00 GMT

1. I'm really not sure which valves tend to bend. I don't think I've seen
this happen on the Accent's DOHC yet. But you can be sure that it happened
because the pistons hit the valves, most likely due to a timing belt
failure.

2. You should be able to purchase a little adaptor extension for your
valve spring compressor. I usually put the keepers in place by
magnetizing a small screwdriver. Even so, it's still tight.

There's another tool-- not sure what it's called-- that is made for
head-on-car service. It comes as two pieces. The first is a cylinder
closed at one end and open at the other, with an annular magnet in the
open end. The second is another cylinder, with a spring loaded plunger in
it. The tool is designed to be used as follows:
- To remove valve keepers: With compressed air in the cylinder, place the
first part on top of the valve spring and strike the tool with a hammer.
The valve keepers should pop out into the magnet.
- To install valve keepers: Place the second piece in the hole in the
first part. Place the spring on the valve and set the keepers in place.
Now, place the tool assembly with the second part on top of the valve stem
and strike the first part. As the valve spring is compressed, the spring
loaded plunger will snap the keepers in place.

This tool is too large to remove the keepers, but it would probably do a
decent job of installing the keepers as long as you had something to block
the valve closed.

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Dave - 03 Jul 2007 12:49 GMT

Thank you

the magnetic screwdriver trick should work

> 1. I'm really not sure which valves tend to bend. I don't think I've seen
> this happen on the Accent's DOHC yet. But you can be sure that it happened
[quoted text clipped - 22 lines]
> decent job of installing the keepers as long as you had something to block
> the valve closed.

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