reasons for and against using a 1.9head with the 1.6 bottom?

[the4ork]

just wondering, seems to me the major thing is they are newer and easier to find in good shape.

but in terms of performance, are we looking at any gains? i found a nice rebuilt shortblock, just wondering what i should do for a head

[RabbitJockey]

lowers compression and way way way better intake ports.  and some have 7mm valve stems

[vanbcguy]

Lower compression may make for harder winter starts, but will be more efficient.  If you use the 1.9 head you need to get a 1.9 or TDI intake manifold as the port shape is different than the 1.6.

[burn_your_money]

I don't think you need to, but it would definitely be a good idea. Especially if you are running more then stock boost.

[rabbitman]

Yup it's a performance thing, it would be useless if running NA and would be harder to start to boot.

Running TD you'll get more power with less boost, compared to a 1.6 head.

[the4ork]

cool, i plan on having a custom intake manifold made, and some porting and polishing. so this is good info.

[NintendoKD]

there are already a couple o guys on here who have done it and are currently doing it "talking about myself"  I have hit a financial blockade currently and can't continue for a while, but you can be sure that I will finish.  I wish you the best of luck on this, most illustious of builds.

stay excellent ,

bill, and ted "LOL, not really" Kevin