exhaust valve doesnt fit

[karol]

hi
i just got my new cylinder head. i started to assembling it. first intake valve went in good but then the exhaust valve just doesnt fit. it gets in and then stops roughly 10mm before its fully in/closed. looks like if something was smaller than it should be. is it normal and should i just use the force to push them in or is there something wrong with the new head.
i have a 1989 tb42s.
cheers

[the ferret]

Mate, it should slide in with finger pressure, if it doesn't, the valve could be bent, or the valve guide has been machined wrongly.
Are they new valves?
Try another valve in the guide, that may tell you something.
Cheers, the ferret.

[patch697]

Mate, it should slide in with finger pressure, if it doesn't, the valve could be bent, or the valve guide has been machined wrongly.
Are they new valves?
Try another valve in the guide, that may tell you something.
Cheers, the ferret.

^^^^^X2 on what The Ferret said.

[MEGOMONSTER]

^^^^^^X3on what "the ferret" said.
Damn talking ferrets
http://www.nissanpatrol.com.au/forums/images/imported/2012/09/85.jpg


Sent from the secret chambers of our secret society, on a secret iPhone, with a secret pin code and eye retina scanning from a secret peep hole, just don't tell anyone OK, cos it's secret........

[patch697]

^^^^^^X3on what "the ferret" said.
Damn talking ferrets
http://www.nissanpatrol.com.au/forums/images/imported/2012/09/85.jpg


Sent from the secret chambers of our secret society, on a secret iPhone, with a secret pin code and eye retina scanning from a secret peep hole, just don't tell anyone OK, cos it's secret........

awe... what a cutie.........hahahahahahahahahaha

[the ferret]

Mate, just make sure the valve stem is free fom all carbon/burn marks.
If you havn't done this before, you will also need to "lap" the valves to the seat and I'm hoping you have had the valve angle checked.
If you don't have a perfect seal, you will soon burn out valves and have to do it all again.
I must stress, that a perfect seal is most important as valves will not wear in.
Cheers, the ferret

[karol]

Its all good now. It was just caron deposit on valve stem.
Thanks

[karol]

What exactly do you mean with lap the valves?

[the ferret]

Mate, if you don't know what 'lapping' the valves is, I would suggest you taking the head and valves to a workshop and having them seat and fit the valves.
As mentioned before, you need a perfect seal, your old valves will not wear into the new seats and they will leak and you will have burn't out valves before you know it.
Cheers, the ferret

[johno90]

Mate, if you don't know what 'lapping' the valves is, I would suggest you taking the head and valves to a workshop and having them seat and fit the valves.
As mentioned before, you need a perfect seal, your old valves will not wear into the new seats and they will leak and you will have burn't out valves before you know it.
Cheers, the ferret

As above champ, if you don't know about lapping or even having dirty old valves trying to fit into a good head its best off you give it to someone with exp. If not done 100% it won't be long till you have to do it all over again.

[choppie]

Mate, if you don't know what 'lapping' the valves is, I would suggest you taking the head and valves to a workshop and having them seat and fit the valves.
As mentioned before, you need a perfect seal, your old valves will not wear into the new seats and they will leak and you will have burn't out valves before you know it.
Cheers, the ferret

Ditto on that

[MC97GQ]

Karol,

Where are you located,

I just had my head done recently and it was under au$200.

So as everyone above said take it somewhere and get it done right.

Mark