fiestasi1800

I've had a quick search but can't really find that much info. I know theres probably stacks on here but I'm probably looking in the wrong place

Basically, whats the difference between a 4x4 head and a 2wd head. I have a 200 block in my 2wd but I assume still the 2wd head?

Can a 4x4 head be fitted to a 2wd? Any advantages/disadvantages if it can?

The reason I ask is that my head gasket is seeping oil out of the side so I need to get it replaced. At the same time, I have puffs of blue smoke at start up and occasionally when driving which I assume is the valve seals or guides.

So I was thinking of getting a head, fitting new guides valves and seals in it ready just for a straight swap when I do the gasket.

How much are you looking for a good second hand head?

Cheers

costina

iTrader: (1)

combustion chambers are different use a 2wd head on a 4x4 block and pistons lowers the comp ratio and ups it when a 4x4 head is put on a 2wd block and pistons.

more torque is also gained on a 4x4 head.

early 3dr and saff heads suffered from gasket failure due to the water galleries being bigger in design (exhaust side)

prices varya lot due to head thickness (how many times its been skimmed) virgin heads are about 139 mm ish and ford state min thinkness of 138.68

On a 4x4 head the oil is fed from the head to the turbo.and also has a different design of front cam bearings

Hope this helps

fiestasi1800

Good answer! Cheers mate much appreciated.

costina

iTrader: (1)

you can use a 4x4 head on a 2wd block and using a cometic triple layer gasket which i thicker will give you a comp ratio of about 8.2:1 ish only if the head is a std size.

Must be checked for det and chip changed to accomodate this otherwise its piston melt down

Most tuners(of the shelf) chips will be tuned for comp ratios of a bout 8.2/3:1 to cover them hence its alway better to have a cossie LIVE MAPPED then you know its right..

Be carefull and good luck