So, my cars running find and all. But I can't help wondering if the cooling lines to my turbo produce the proper flow direction.
So the "in" line comes off the thermostat housing in to turbo then the "out" line goes from the turbo into the block drain. Is this hurting/fighting coolant flow?
The only reason I think about this is my upper rad. hose seems to get very pressurized.
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Water cooled turbo?
The water jacket in the engine block is under higher pressure than the rest of the system. The waterpump pumps directly into the block, then the water flows into the head and out through the thermostat housing. So if theres one point in the system the water will try to flow from, its going to be the engine block. I'm pretty sure that means it will try to flow from the block drain out to the thermostat housing, if it flowing at all.
When I was running a GT BB turbo I fed it from the old throttle body heater fitting on the block and returned it to the old throttle body heater port at the thermostat housing.
If you've got stiff hoses, you might have a blown HG. Good old combustion chamber pressure in the cooling system...
When I was running a GT BB turbo I fed it from the old throttle body heater fitting on the block and returned it to the old throttle body heater port at the thermostat housing.
If you've got stiff hoses, you might have a blown HG. Good old combustion chamber pressure in the cooling system...
I can't imagine the HG is blown. It's was running fine before turbo and only has maybe 5 miles since turbo. No water in oil or vise versa. What's normal coolant pressure supossed to be?
So in theory it should be flowing, just the opposite of what I thought. Which shouldn't matter for the turbo lines.
So in theory it should be flowing, just the opposite of what I thought. Which shouldn't matter for the turbo lines.
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- Joined: Jan 23, 2008 6:58 PM
- Location: north va/ southern ID
In my case it became clear when it was over-pressurizing the cooling system with leakage from the combustion chambers. That can cause the system to purge past the radiator cap as if the motor were overheating. I also used a noticeable amount of coolant once it was really blown out.
M30's can mix coolant with the oil with just a blown head gasket. The oil passages on the M20 make this very unlikely. So if your small six is mixing the oil, you've very possibly got a cracked head.
M30's can mix coolant with the oil with just a blown head gasket. The oil passages on the M20 make this very unlikely. So if your small six is mixing the oil, you've very possibly got a cracked head.
It pressurizes but doesn't purge any out the cap. It could be normal, I don't remeber how they felt pre-turbo. I think I'm just being alittle paranoidturbodan wrote:In my case it became clear when it was over-pressurizing the cooling system with leakage from the combustion chambers. That can cause the system to purge past the radiator cap as if the motor were overheating. I also used a noticeable amount of coolant once it was really blown out.
M30's can mix coolant with the oil with just a blown head gasket. The oil passages on the M20 make this very unlikely. So if your small six is mixing the oil, you've very possibly got a cracked head.
![Nut Job :nuts:](./images/smilies/wacko.gif)
I'll find out when I can do some real road testing, roads need to clear up though.