22RE cylinder head valve seat install and valve seat cutting
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Uploaded by putneyscustommachine on Dec 2, 2009
Installing and cutting new valve seats on a Toyota 22RE cylinder head using our Serdi 3.0.
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How do you perfectly align the angle and position of the cutting head with the ports themselves? Is it by inserting that long shaft at the end of the tool into the valve guides for example?
LMF5000 3 months ago
@putneyscustommachine~ u say your valve face is convex..... so its radiused??
marek0086 1 year ago
nice!! how much for a head like that??
does it come complete with valves?
talafuckinted 1 year ago
haha.... i cant call u.... im from Australia.
marek0086 1 year ago
So when u have a radiused seat and face.... that means the contact area is tiny!
Wouldn't the face and seat "pound" each other flat after a while?.... because u have such high psi on the contact area due to a very small contact area surface?
marek0086 1 year ago
No way! I like tech talk..... it gets me off. XD
marek0086 1 year ago
too much of a concave face and too much of a lip to flow optimally.
That is why we have stainless valves made to our specs, it avoids the need for a back cut.
Stock valves can be made to flow much better, but at the cost of lesser longevity.
Sorry if I am vague, but it's hard to answer in a 500 character box.
You can call us for more details and we can bore you to death with the details. :)
putneyscustommachine 1 year ago
NO. The seat profile and the valve face profile have to work together to get the best flow.
The 45 degree angle of the seat and valve face are the only parts that have to mesh with each other to get the proper sealing.
We cut the radius in the seats to work optimal with the custom valve we have made (the valve face is convex and has the proper back cuts for optimal flow).
You can 'back-cut' a stock valve (cut the portion above the 45 degree cut) to help flow, but the stock valve has
putneyscustommachine 1 year ago
is valve SEAT profile more important than valve FACE profile??
Can u radius the valve face??
marek0086 1 year ago
You can see the side by side valve face (and ramp of the face) comparison on our site. Check the "cylinder head" page at 22reperformance(dot)com.
Good question, and thanks for pointing that part out.
putneyscustommachine 1 year ago