Could someone recommend me a shop located in VA/MD/DC area that does a good valve job? I'm planning to buy new valve +1mm that requires my cylinder heads to be bore, any information would be good so I can continue my build.

 

Hills in Baltimore has a good machine shop that works on heads.

 

Hills uses Justice Racing in Winchester, VA.

 

C & C Performance has an awesome machine shop and they have been doing it for 15+ years. They did my SR20 head when I got my 5 angle valve job.

 

For what its worth to you...save the money because 99% of builds wont benefit from this or head work outside of good cams and valve train. It has been seen time and time again for years in the FI forums. I haven't seen numbers, but have read from reputable sources on numerous occasions stock VQ heads flow better than a worked over 2JZ head.

 

^+1

An oversize valve will net you no worthwhile increase in power - certainly not for a vq35 based street car. Higher heat resistance, longer fatigue life etc due to the change in material is the only major upside.

A spring upgrade and a solid camshaft to match your goals and set-up will be far more valuable.

If you are dead set on doing a valve upgrade of some sort, call Tom @ Auto Master Repair and Machine (Gaithersburg). Precision work at a solid price point.

Good luck

 

^+2, headwork costs $$$$ w/ little to be gained

 

Headwork can yield very significant gains actually. Most people don't know how to do it (on lots of different engines, the VQ is no exception here). Takes the right equipment, the right skill person, time and $

oversized valves however, are not worth the cost of admission generally speaking unless you are going for the upper echelons of power. I certainly wouldn't suggest the time and expense of a larger valve only to strangle it with a 3 angle valve job. If it's worth doing at all, it's worth doing right the first time. As mentioned above, a stock replacement (aftermarket) valve can give some benefits in terms of reduced weight, and other upsides. Worth the cost is, as always, a relative term depending on who is footing the bill and what their build consists of. It's by no means an 'essential'

Not in MD, but close enough (NJ) - Dave @ Headgames is among the best there is

 

Thanks for the input guys, I've got a lifter issue with my current heads which makes an annoying sewing machine sound. So I went ahead and bought replacement heads and decided to "upgrade" some things (Tomei procams 264 10.5mm lift) also looking to upgrade the springs and now since I've learned that about +1 valves then I'll probably replace the valves if damaged with standard fitments. Anything else you guys would suggest to upgrade since I've just started the build to fight that annoying sewing machine sound and oil consumption?

 

This is just an NA head refresh? Or are you building with FI in mind?

 

NA build