Ramair + crankcase pressure = blown cam cover gasket?!

[alpental]

I've only replaced 4 rocket ones but I use the threebond liquid gasket (probably just another high temp rtv) that the manual specifies. No probs

@Neville Lush recommended using Three Bond Liquid Gasket 1194 a little while ago, and other users reported how great it works.

Thread: Now it's gushing oil
Three Bond:

 

[Mick TOMCC]

for

Just picked up my '14 Roadster with 14,000 miles on it from the dealer for the second blown cam cover gasket, both times right behind cylinder 1 on the exhaust side. Dealer mentioned that Triumph was asking about modifications to the bike, and they kindly said nothing.

However, the tech came out to talk about what he thinks is going on. He said the cam cover and head mating surfaces are flat and clean. He thinks the problem is that I've removed the stock intake and installed the Ramair system. The stock exhaust design creates a vacuum to the crankcase which aids in pressure relief, and the Ramair crankcase breather filter doesn't do anything to help relieve big crankcase pressures, and that unrelieved pressure is what's blowing out my cam cover gasket.

I told him I don't understand how on one hand he can say the crankcase generates high pressures but on the other hand a filter won't allow it to breath. The filter has only been on a year, but I guess I'll check it to see if it's clogged or something.

Does the crankcase require vacuum-assisted pressure relief, or do I need to find another Triumph dealer?

For what its worth I have had this issue and a mate here with his roadster also, it occured just before it was due for valve stem clearance check, installed new gasket and no issue nor has my big mate perhaps there was a crook batch of gaskets

 

[R3Rx118]

I just installed my Ramair and haven't yet, install the crankcase breather filter. Reading all this it sounds like some folks think it should be under a vacuum to perform better which I believe is how the stock one works.
I'm looking to remove my evap system because I'm trying to figure out what's causing a vacuum to form in my tank but that's another post.
So my question is could I connect the crankcase breather line, which I'm not even sure where the upper end is yet, to the vac lines that go to the three cylinders from the evap system once that's removed?
I'll be looking up posts regarding removing the evap because I know you have to plug some lines. Again....another post.

 

[Rocket Scientist]

I would not hook it directly to your vacuum lines as you will likely pull oil into the intake. My crankcase vent line runs into the end of one of my individual K&N's so it never see's any vacuum higher than the restriction of the filter. Been that way for around 50,000 miles.

 

[R3Rx118]

I would not hook it directly to your vacuum lines as you will likely pull oil into the intake. Mine crankcase vent line runs into the end of one of my individual K&N's so it never see's any vacuum higher than the restriction of the filter. Been that way for around 50,000 miles.

Yep...didn't even think about the oil. Bad idea.
Where does the other end of the breather connect? Somewhere in the intake right? I'm assuming it's connected somewhere where it passes through the air filter? Couldn't find it in the manual.

 

[warp9.9]

I went a little different mine runs to a baffled catch can the thru a one way valve and out the exhaust any moisture and gunk get caught in the catch can. So far so good.

 

[Rocket Scientist]

Yep...didn't even think about the oil. Bad idea.
Where does the other end of the breather connect? Somewhere in the intake right? I'm assuming it's connected somewhere where it passes through the air filter? Couldn't find it in the manual.

It runs from the back of the engine up to the bottom of the box that holds the stock air filter element.

 

[Rocket Scientist]

I went a little different mine runs to a baffled catch can the thru a one way valve and out the exhaust any moisture and gunk get caught in the catch can. So far so good.

Probably a must on a modified engine, especially one with a huffer

 

[warp9.9]

Probably a must on a modified engine, especially one with a huffer

No its on the Titan although I will definetly do one for the Falcon. With this set up I can always vent to the atmosphere if I need the O2 bung for say auto tune with a A/F meter.

 

[Rocket Scientist]

No its on the Titan although I will definetly do one for the Falcon. With this set up I can always vent to the atmosphere if I need the O2 bung for say auto tune with a A/F meter.

Is the "Titan" the Carpenter bike ? If so I would think that would be a good idea on a 9000+ rpm motor.