S

skunk98

Member

• Nov 17, 2013

• #1

I've had a look through forum,but can't find a definitive answer if P38 3.9 heads will fit a 1991 Disco 3.5 V8. I've got to change the head gaskets etc.. and my mate has a pair of new P38 heads,so was just wondering.

 

listerdiesel

Well-Known Member

Events Planner

• Nov 17, 2013

• #2

P38 heads will be 10-bolt, 3.5 heads are 14-bolt.

You can fit them, and a lot of folks leave out the outside 4 bolts each side anyway, but personally I think it looks odd with the holes left open.

Peter

 

jamesmartin

Well-Known Member

• Nov 17, 2013

• #3

you wont see the holes

 

listerdiesel

Well-Known Member

Events Planner

• Nov 17, 2013

• #4

jamesmartin said:

you wont see the holes

Click to expand...

Why not, James? they are the outside of the heads?

Peter

 

T

texpis

Active Member

• Nov 17, 2013

• #5

Because the holes in the p38 heads are blanked of and will cover the holes. Yes they will fit

Mick

 

Last edited: Nov 17, 2013

listerdiesel

Well-Known Member

Events Planner

• Nov 17, 2013

• #6

Good point, thanks.

Peter

 

T

texpis

Active Member

• Nov 17, 2013

• #7

If you do use these heads composite gaskets will be required to keep the CR the same.

Mick

 

Spunka

New Member

• Nov 18, 2013

• #8

Is there any advantage to doing this, IE bigger valves, better oil ways,better water flow etc

just asking out of interest