Just thought I would post this because I wish I would have found this type of information before ordering.
I am going through the heads on the LS4 that I plan on installing into my 88 formula. The exhaust valves were very pitted so they are getting replaced. Looked on Rockauto and found the Melling V1935.
Well I received this...
Doesn't look much like what is in the picture and has quite a large ditch on the back side. They are also made in India, didn't get a pic of the box though. So I sent them back and ordered the Enginetech variants, p/n:V4371S for what looks like a better valve (STELLITE) at a cheaper price.
Well I received this...
They don't look much like the picture either but are way better looking than the Mellings. The Enginetech valves are made in Taiwan. They also have a ditch on the back side but it is not as pronounced as the Mellings.
I have heard that a ditch on the back of an exhaust valve is a good thing as it reduces reverse flow/reversion. The machine finish on the Mellings was not near as good as the Enginetech's. However, the Mellings were not their stellite version so I can't beat them up too bad. Both pictures rockauto depicts has some form of black coating, neither the Melling or the Enginetech valves received had this coating.
Post replies if you would like but my main goal here was to get this information out there for anyone else wondering where these may be made and what they really look like.
Brian
