opinions big valve vr head

[yakuza racer 16]

AHOY gents, got my old big valve head from a previous build, needs new valves and cleaning up.. question:

which will be better running on a stock bottom end;

1. ported and flowed "stock" vr head

2. ported, flowed, 3 angled valves, big valved head

im asking because last time i fitted this head my car didn't perform as well, prob due to the valves leaking, but will my stock ecu be able to handle it or is a chip a must?

thanks

[michael5556 247]

Shouldn't leak at all? Something's not right if they are leaking! And definitely the large valve head will perform better. More air etc getting in/out.

[yakuza racer 16]

the head had been standing for very long, the seats gets hard and seeps....

going to check if a valve is maybe bent..

now spend cash on fixing the big valve head or port and flow my current stock head...

[CALICO 130]

Spend spend spend you know you want to should see quite good gains with better cams and a remap.

[yakuza racer 16]

cams is imposible to get around these parts...... looking at saving for a set 268 road cams and remap....

[michael5556 247]

Yeah agree. Spend money on the big valve head. Unless its cracked or something. Maybe get it tested?

[FishWick 21]

Big valve head is a good move and that + cams is even better.

If the valve seats have gone a bit rusty, running the engine will soon get rid of that! My r32 head was the same. Left in a garden for 2 years. Completely rusted up inside but a 100 miles later it was running perfect!