I have a question on what this is???? what do you do??? i know that you cut the valve seats at different angles or i think. I have omni power valves, retainers, and springs. What kind of gains can i expect from this. the shop is quoting me around 250. Reason of me asking is that i'm in the process of rebuilding my engine and putting a lot of new goodies in and the shop asked me if i wanted one. If any one can help me out here i would greatly appreciate it. thanks again

 

It is the process machining them, there are three, five angle valve jobs, it is a descent power gain, smooths out air flow and everything. If the head is all apart and you putting new parts in it certainly wont hurt and will help.

 

this is what my build up is looking like.

Mods:
AEM cold air
skunk2 intake manifold
fludyne radiator
removed A.C
removed P.S
clutchmasters stage 3 clutch
p28 skunk2 ecu
groundcontrol coilovers
ls transmission
and remvoed cat.
98 front end conversion
Mods to come:
CTR pistons
Skunk2 stage2 cams
Omni power valve train
dc jdm itr header
skunk2 megapower exhaust W/carsound hi flo cat
skunk2 adjustable cam gears
ARP rod bolts
new Clutchmasters stage 3 clutch.
and i'm going to ditch the skunk2 ecu and get the car tuned with hondata.
what you guys think??
I know the ls tranny is hurting me but i hav eto get money untill i can buy a gs-r one.

 

thank you any one with experince in having this done to their car??? what are your comments or complaints about it??? did you notice gains??

 

I had a very good local shop do my last head and it made quite a big diff. but they do lots of race heads and no what they are doing, just make sure who ever does it know what they are doing, cuz it could hurt performance to if its done wrong. Its all about getting more smoother air to the cylinders

 

A good valve job can make great improvements on even a crappy head. Even so, all the porting in the world won't do much without a good valve job to top it off. The valve job is the foundation from which all other headwork should be built.