Shaving heads... VG30 Minissan ZSX6

[G-E]

if you added more quench area at the opposite side, maybe cresting towards the center more.... you could get a few without interfering with any moving metal or airflow from the valves

but adding to the heads in general will cause a problem with airflow, the DE motors have flatter wider hemispheres to seat the 4 valves, ours are more arched clamshell because the 2 valves bigger and set to one side

and any head welding will require preheating and a torque plate or you're looking at line boring the cam journals

[MachZ]

G-E wrote: ours are more arched clamshell because the 2 valves bigger and set to one side

We got a HEMI! kind of :lol:

[operationcougar]

QUENCH!!!, thats how the big engines get a lot of there flow, and it also helps (assuming you get it done right) with keeping the heads cooler and all other good stuff. it has always been very helpful in the two valve engines. the hardest part is going all out and finding some super flat pistons to match the heads after you have added your material

[VG36ET]

Shaving Heads on a VG???

Way more money and trouble then it's worth IMVHO. Good luck to anyone attempting it though.

I don't know what your budget is? If you want more power, get the biggest lift&duration cams you can afford. Turbo cams and N/A are night and day as you may know. The cams on all the VG's are pathetic for making respectable N/A power. The problem is that most of the grinds more desireable for an n/a engine are the more expensive fresh billet cams. Like JWT, Nismo, Nissanmotorsport etc. You can custom *regrind* cams but you can't add material of course.

Building a VG34E w/Vh45de pistons like we're doing would be the way to go for serious N/A power but VG33E blocks aren't falling off trees like Vg30E's. The VG33E block IS thicker then the VG30E and you can't bore out the 30E to 3.4L. You can use your VG heads if you find a VG33E shortblock, you just need to slightly mod your heads for the 33E water passeges(simple& fast grind work).

The VH45DE cams are flat toppers but they still have four valve cuts for the DOHC engine. You'd have to have the pistons machined with the proper valve cuts(no biggie). Those pistons come molybendum coated, and they're cheap and strong castings. The actual compression ratio will come out to 9.6:1.

Anyway, that ride looks bad ass...goodluck bro.

[MrwassmanNA2T]

I tought they did add material to "reground" cams?