Wanna come over and we can try it on the Escort?

 

speaking of you. my dad just bought a house like walking distance from you. i think on the same damn road but about 6 or 7 houses down.

 

I would check timing for starters.

As for the 4V heads, you can not possibly install 4V heads as he would need the 4V intake to bolt them on to. They dont fit, nor match up. In addition there would be extra parts like secondary chains, covers, etc laying around.

The SVO was a 4 cyl, but there are SVO heads for the Modular 4.6

As for the PI headswap, that is a very good debate. The valves are shrouded on a PI head just as a NPI, maybe you were thinking of the intake ridge, which acts as a shroud to an already shrouded valve. The PI head has a quench pad which doesnt shroud the valve. To unshroud them and make power you need to go with a big bore route. Yes the PI headswap will make power, but the heads themselves only account for 5-10 rwhp. The intake valves are the same on both heads, but the exhaust valve on a PI is 2 mm bigger, however the PI's intake port volume is bigger.

The PI intake and cams is where most of the gains are at. That has been proven by some such as Johnny Langton who was the creator of the PI swap to begin with. Some who have done the PI cams/intake swap gain 35 rwhp where the full swap nets around 45

 

Just to add to your post of intelligence.

SVO was an "operation" hence the 3rd letter of the abbrieviation such as SVT is. SVO made a lot of heads, not only for the ohc modular motors.

 

thank you. and the pressurise the fuel rail guy. dude that is not right. I am asking for help. not how to kill the car further.