Subaru forum is full of idiots
Thread Starter
Joined: Apr 2009
Posts: 1,554
Likes: 4
From: London
Subaru forum is full of idiots
http://bbs.scoobynet...a-new-post.html
Don't know how I have the patience to respond to these idiots, I know a lot of people closely associate Subaru drivers to twats but I never thought it was true.
Pretty pissed off that these guys who posted on my thread either never had a 2.5 dccd or were begging others for advise about the issues they had and clearly showed they haven't got a clue about anything
Don't know how I have the patience to respond to these idiots, I know a lot of people closely associate Subaru drivers to twats but I never thought it was true.
Pretty pissed off that these guys who posted on my thread either never had a 2.5 dccd or were begging others for advise about the issues they had and clearly showed they haven't got a clue about anything
Joined: Sep 2012
Posts: 3,301
Likes: 213
From: Greenwood, AR
Subaru is virtually synonymous for head gasket issues. The motors are inherently weak design. Cylinders flex a lot, so there is some validity in using head bolts. Due to the placement of the oil return and the coolant passages in the head gasket, you rarely have an exchange with oil and coolant. Most of the time you just push coolant into your overflow.
I lifted a head at 23 PSI on a 20G w/ E85. Since I have to pull the motor to stud it, I bought a brand new short block and picking up some Manley A/B drop-in's with some ARP studs. It does happen... I've tuned many, many Subaru's. Some of them have lifting issues, some don't. Some of the most beaten on ones are just fine, and then others show issues quickly. I have a few buddies that work at a Subaru dealership and I'm still surprised about how many Subaru's, in general, have to have their head gaskets replaced.
I do agree, I can't stand most Subaru people.
I lifted a head at 23 PSI on a 20G w/ E85. Since I have to pull the motor to stud it, I bought a brand new short block and picking up some Manley A/B drop-in's with some ARP studs. It does happen... I've tuned many, many Subaru's. Some of them have lifting issues, some don't. Some of the most beaten on ones are just fine, and then others show issues quickly. I have a few buddies that work at a Subaru dealership and I'm still surprised about how many Subaru's, in general, have to have their head gaskets replaced.
I do agree, I can't stand most Subaru people.
Thread Starter
Joined: Apr 2009
Posts: 1,554
Likes: 4
From: London
Excessive heat or running very high boost.
There are a huge number of cooling system faults on the Subarus that cause for the head to get too hot from airlocks, there are many very well documented TSBs on these cars and if people pay attention to them (and look out to what the fault is being described as) or do the correct maintainence (such as changing the water pump with the timing belt at the correct interval) and doing frequebt coolant checks it is very unlikely to damage the cylinder heads.
The idea of head lift is not possible on a standard car running factory boost, it is however possible on higher boost applications as Jason wrote above, but when you start running those boost pressures it is then another step where you should improve the factory cooling and make revisions to the common points of failure.
Any car you exert excessive boost to will lift the head, engineers design components to operate under their normal operating conditions + a margin of safety and when you exceed that by more than 30% for example then you should expect to run into trouble.
It could be absolutely any Subaru from their range to have a head gasket issue not just an Impreza, irrespective of if driven by an old lady who drives casually or a drive as fast as you can track wanna be, it is a common issue among all the engines in all conditions, just as you said Jason, your friends who work at main dealerships will know this, all Subaru engines are prone to head gasket issues.
Having stronger head bolts does not stop warping of the cylinder head. It is against basic theory to believe that. The bolts run the same amount of torque whether standard or ARP and will exert the same amount of loading pressure in standard environments. You will find the warping of the cylinder head to not be where the bolts are but close to the bores where the cylinder head is not under loading pressure. Running ARP or stronger than factory bolts will stop head lift (which again doesn't happen under standard applications) but not resolve head gasket issues.
I wanted to make it clear to those spamming my thread on scoobynet that for standard application and standard boost there is absolutely nothing wrong in my decision to use standard bolts however they can't understand the concept
Thanks for your input guys
There are a huge number of cooling system faults on the Subarus that cause for the head to get too hot from airlocks, there are many very well documented TSBs on these cars and if people pay attention to them (and look out to what the fault is being described as) or do the correct maintainence (such as changing the water pump with the timing belt at the correct interval) and doing frequebt coolant checks it is very unlikely to damage the cylinder heads.
The idea of head lift is not possible on a standard car running factory boost, it is however possible on higher boost applications as Jason wrote above, but when you start running those boost pressures it is then another step where you should improve the factory cooling and make revisions to the common points of failure.
Any car you exert excessive boost to will lift the head, engineers design components to operate under their normal operating conditions + a margin of safety and when you exceed that by more than 30% for example then you should expect to run into trouble.
It could be absolutely any Subaru from their range to have a head gasket issue not just an Impreza, irrespective of if driven by an old lady who drives casually or a drive as fast as you can track wanna be, it is a common issue among all the engines in all conditions, just as you said Jason, your friends who work at main dealerships will know this, all Subaru engines are prone to head gasket issues.
Having stronger head bolts does not stop warping of the cylinder head. It is against basic theory to believe that. The bolts run the same amount of torque whether standard or ARP and will exert the same amount of loading pressure in standard environments. You will find the warping of the cylinder head to not be where the bolts are but close to the bores where the cylinder head is not under loading pressure. Running ARP or stronger than factory bolts will stop head lift (which again doesn't happen under standard applications) but not resolve head gasket issues.
I wanted to make it clear to those spamming my thread on scoobynet that for standard application and standard boost there is absolutely nothing wrong in my decision to use standard bolts however they can't understand the concept
Thanks for your input guys
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