Topic: Valve job

[Tack]

How do you determine the size of cutters required for valve seats ?
This is a general question for any head on any bike. Never done this before if the angles required are 30, 45 and 60 degrees what do you look for? I must change a inlet guide and light pitting on 2 exhaust valves , lapping will not remove the pitting. The bike in question that requires the work is a CB550k3 can anyone point me in the right direction, thanks in advance
Tack


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[700504]

If I'm not mistaken, most high end valve cutters are angled to spec and then are adjustable for the size you need. The tools are spending though, don't get the ones made in India. Just make sure you get the correct size tool guide to go into your valve guide.

[Tack]

In their lies the dilemma, spend a grand on correct cutters that may never be used again or chance the India ones, send it to a shop and learn nothing plus no local shop would be willing to do the job


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[754]

Posting your location may help.

[700504]

From what I've heard, Neway is a good brand, look into them, should be under $500 for a set. Get yourself a cheap head, get good at cutting them and then do jobs yourself, make the tool pay for itself. Heck you can tear into old busted lawn mowers for good cheap practice.

[Tack]

Neway will look out for them and location is County Cork,Ireland


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[Bankerdanny]

My brother-in-law lives in County Cork, out in the country, but relatively near to Cork City where he works for Apple.

[Tack]

North, East or west doesn't matter all nice areas


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[Bankerdanny]

I haven't visited him, but I've seen pictures of his house and the land and it is absolutely beautiful.

[Tack]

If I'm not mistaken, re-cutting your seats requires honing/replacing your guides so the stem is perfectly centered afterwards.

Calj737 I bow to your superior knowledge on all two wheeled things and you have not steered me wrong BUT if the valve and guide are centered with the with the seat why would I replace the guide. Due to my lack of knowledge on the subject it dose not make sense
Tack


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[Tack]

From what I've heard, Neway is a good brand, look into them, should be under $500 for a set. Get yourself a cheap head, get good at cutting them and then do jobs yourself, make the tool pay for itself. Heck you can tear into old busted lawn mowers for good cheap practice.

If your interested I emailed Neway and this is what they sentand easy to contact


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[Tack]

Understand thanks


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[700504]

From what I've heard, Neway is a good brand, look into them, should be under $500 for a set. Get yourself a cheap head, get good at cutting them and then do jobs yourself, make the tool pay for itself. Heck you can tear into old busted lawn mowers for good cheap practice.

If your interested I emailed Neway and this is what they sentand easy to contact


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Very cool, and to go off what cal was saying; If you're considering overhauling the head you'll replace the guides, hone them for new valves and recut the seats.

Here is a bit of good info from Hondaman and 70CB750 in this thread on replacing the valve guides: http://forums.sohc4.net/index.php?topic=127377.0

[Tack]

From what I've heard, Neway is a good brand, look into them, should be under $500 for a set. Get yourself a cheap head, get good at cutting them and then do jobs yourself, make the tool pay for itself. Heck you can tear into old busted lawn mowers for good cheap practice.

If your interested I emailed Neway and this is what they sentand easy to contact


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Very cool, and to go off what cal was saying; If you're considering overhauling the head you'll replace the guides, hone them for new valves and recut the seats.

Here is a bit of good info from Hondaman and 70CB750 in this thread on replacing the valve guides: http://forums.sohc4.net/index.php?topic=127377.0

Info is gold thanks for the link


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[Don R]

 Can't you get the cutter heads with a different angle on each end? Mine's like that. 30 and 45 I think. You just need one of those and one regular.

[Don R]

 New guides means cut the valve seats, not vice versa. If a head had perfectly acceptable guides you could touch up the seats and leave them but most of the time one leads to the other.

[Tack]

New guides means cut the valve seats, not vice versa. If a head had perfectly acceptable guides you could touch up the seats and leave them but most of the time one leads to the other.

Thanks for "unconfusing" me, Don 

700504 ,Don & cal thanks for the info .


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