Have a strait six (2f) dual fuel and have no compression between cylinders 1 and 2. I think it is the head gasket. What else could it be and how should I test for them?
Cheers
Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.
Compression?
Moderators: toaddog, TWISTY, V8Patrol, Moderators
Compression?
If you dont have panel damage you ain't trying hard enough
Given that it is between the cylinders the head gasket is the No 1 bet.
If it was limited to one cyl down on compression then you could be looking at valves or a piston/ring
If it was limited to one cyl down on compression then you could be looking at valves or a piston/ring
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
No special gasket but quality valves help as gas burns hotter than petrol and valves get burnt.
Get your piston to top dead centre on compression stroke and squirt air from a compressor through the plug hole but make sure the fitting is the same thread as your sparkplug.
If air comes out the exhaust it's probably an exhaust valve, if it comes out the air intake/carby its probably an intake valve.
If compression is down on two neighbouring cylinders its probably the head gasket as was said.
cheers
Get your piston to top dead centre on compression stroke and squirt air from a compressor through the plug hole but make sure the fitting is the same thread as your sparkplug.
If air comes out the exhaust it's probably an exhaust valve, if it comes out the air intake/carby its probably an intake valve.
If compression is down on two neighbouring cylinders its probably the head gasket as was said.
cheers
Bordertrek 4X4 & Fabrication
0400 250 734 Bordertown SA
I love terra firma-the less firma the more terra
0400 250 734 Bordertown SA
I love terra firma-the less firma the more terra
Just get a straight edge and make sure the mating surfaces are flat. If they are then you've come out of it pretty cleanly and cheaply.mudmacaca wrote:Took the head off today and it was the gasket between the cylinders.
Should I get the head machined or not?
While you have the heads off it may be worthwhile getting new valve guides and seats pressed in, a valve grind (given that it is dual fuel it will probably need it anyway), and a general clean up of carbon deposits on the piston tops, etc. Saves pulling it down for another couple of hundred thousand km.
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
DAMIKA the head is only 5 years old and I cleaned of the deposits last night with a cordless and a brass wire brush attachment the valves seem to be stainless. Oh and I am a tight arse dont want to spend the cash on a reco its about 380 but if they can do it today I will get it machined for 80 to 100
Of to the machine shop know then back to clean the block
and back on with its head
Of to the machine shop know then back to clean the block
and back on with its head If you dont have panel damage you ain't trying hard enough
Who is online
Users browsing this forum: No registered users and 3 guests