Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Any tipe to avoid a cracked head?

87RB30VL

Swiggidy Swag
Joined
Feb 22, 2011
Messages
1,100
Reaction score
12
Points
38
Age
34
Location
North Brisbane
Website
www.facebook.com
Members Ride
09' FG XR6 Falcon, 75' HJ Kingswood Ute
Edit: I friggin' hate it when I typo in a thread title :(

So I read somewhere that the RB30's that went into the Holdens were more prone to getting their heads cracked than their Nissan counterparts as the radiator in the VL's are mounted lower than in the Skylines. Anyone got any tips or hints to avoid getting your head split, especially in this hot Aussie weather?

I'm thinking along the lines of custom intakes or modifications to the intake/mods to make the airflow better etc

cheers,

Sorry if this has been covered, I searched but nothing came up.
 

Pub247

Well-Known Member
Joined
Apr 14, 2006
Messages
3,372
Reaction score
58
Points
48
Location
Melbourne S.E.
Members Ride
Ford Fairmont
First Tip is to bleed the air out of the cooling sustem.
second tip use a good anticorrosion radiator fluid

End Tips
Its really simple they wont crack if you maintain your cooling ssystem
 

jatsvl

NEEDS MORE POWER!
Joined
Nov 21, 2006
Messages
959
Reaction score
17
Points
0
Location
Adelaide
Members Ride
vl exec wagon
Asked and answered perfectly.
maintain your cooling system correctly and you will have no problems.
 

harry3

New Member
Joined
Jul 23, 2005
Messages
928
Reaction score
8
Points
0
Age
71
Location
melbourne
Members Ride
vl berlina wagon 6cyl
the holden engine had to be lowered at the front to fit under the bonnet and this somehow caused the steam trap head cracking problem.both nissan and holden versions have 2 bleeder bolts that must be unscrewed ( if siezed up, remove rubber elbow instead) and force water in thru radiator filler cap until water flows from both bleeder holes, put grease on bolt threads and replace
 

nasty1

New Member
Joined
Feb 16, 2008
Messages
1,739
Reaction score
3
Points
0
Location
adelaide
Members Ride
vy2 clubsport
wheres this rubber elbow?
 

Pub247

Well-Known Member
Joined
Apr 14, 2006
Messages
3,372
Reaction score
58
Points
48
Location
Melbourne S.E.
Members Ride
Ford Fairmont
the holden engine had to be lowered at the front to fit under the bonnet and this somehow caused the steam trap head cracking problem.both nissan and holden versions have 2 bleeder bolts that must be unscrewed ( if siezed up, remove rubber elbow instead) and force water in thru radiator filler cap until water flows from both bleeder holes, put grease on bolt threads and replace
Mate they didnt lower the engine its the radiator that sits lower. It makes the head the highest point in the cooling system. Air lighter than water so it rises to the top. Which mean your air pockets end up in the head
 
Top