nicksaph

just had a 2wd come in the garage for a water leak from the exhaust side rear of the cylinder head. not had a good proper look yet but it looks like the head rotted through



is it new head time or has anybody had a similar problem and had the head welded up

cheeRS nick

daz1968

Think it needs removing and cleaning, as if it's rotted there it could be very bad in all waterways, never seen anything like that happen,

mechanic28

iTrader: (5)

holly crap how long that been running with no or little anti freeze

mechanic28

iTrader: (5)

and i would say that head is scrap if its gone that far

costina

iTrader: (1)

notice the exhaust manifold nut and washer is missing

but as said looks like another head is required

nicksaph

i am going to take it off but i was just wondering if any body else has seen this befor.

i remember vauxhall heads used to rot the head internal waterways and i used to have them welded up and refaced

mechanic28

iTrader: (5)

never seen that before on a yb but then i aint really seen lots of yb lumps yes the c20xe used to do that on the vx

nicksaph

got the head off today and under closer inspection it looks like frost damage.
on the pictures you can see where a piece has bee pushed out of the head and a small crack on the head face its self





not certain yet but it looks like it is repairable. taking it to the engine machinists tomorrow

nicksaph

bit of an update.

took the head to get it welded last thursday and picked it up on monday morning, this was befor it was welded



this is after it was welded





i dropped it off at the machine shop on monday for a pressure test and skim if the pressure test was ok

two of the exhaust manifold studs had been helicoiled in the past and hadn't been done very well and were leaking.
the machine shop drilled the out and replace the threads with proper screwed in inserts, so no more leaks

machined head face



i could grind the welded part on the side of the head down a little bit to make it flush but i don't think i am going to bother in case it weakens the weld

now it just a question of bolting it all back together

mechanic28

iTrader: (5)

that last picture is there not a crack on the face on the head where its been welding?

cossie891

iTrader: (1)

Surely the head is scrap now any way looking at how many times its been skimmed

DixieTheKid

iTrader: (2)

I agree, that head is thin!

c20tbo

iTrader: (1)

If heads coming off anyway id do a proper fix.