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Apr 27, 2011 4:22 pm
Apr 27, 2011 4:22 pm
Subject: Re: Severe Oil leak
Hi,
We have side plates in stock if you are in need!
However, water mods,
Depending on how far you are going with compression ratios and other mods etc do the following work and modifications.
1. Cylinder head and cylinder block, right front 3 cylinders, looking down from above you will see very small water transfer ports taking water from the block to the head, these are usually 1/4" in dia. Increase all of these "on this area only" to the largest size you feel comfortable to do, keeping them matched to each other. We usually do these to about 7/16" or so.
2. modify the gasket to match.
3. clean and check the water transfer tubes between right and left sides, inside the block.
4. Top pipes from rear of inlet manifold to front water outlet.
These pipes should CROSS OVER right front to left rear and vice versa! they only need to be about 1/2" dia though as too big and you get no cooling on the front right 3 again!
5. If going performance route you can also make external piping to both sides and front and rear equally, this will give you a much better and much less heat temperamental V12 if you intend to drive large hills and mountains etc.
Radiator and general cooling wise.
1. Make sure you have a NEW core! old ones will never clean well enough and an engine rebuild is far more costly than a new core!
2. Remove the heat shrouds from around your exhaust manifolds and cover the exhaust with Thermotec exhaust bandage, do this well and put it on "Very Wet" This will keep hot exhaust out of your engine bay but also allow the hot air that has gone through the radiator to escape to the outside via those lovely big louvres. If you imagine the air trying to get past the engine under the car you will see why V12s regularly over heat! Especially if you remember that ALL old cars and most moderns have a positive pressure under the car when at cruising speeds! Thus hindering the cooling further!
3. Then the final cooling "Coup de gras" is to replace your fan blades for those of a Jaguar Mk11, these are of much better design, flow more air, sap less power and look good also! Easy to fit with only some hand tools and a bit of thought!
A non overheating V12 will emerge, even with a short rad DHC up the mountains! But keep the cooling system clean!
Good luck.
Julian
Hi,
We have side plates in stock if you are in need!
However, water mods,
Depending on how far you are going with compression ratios and other mods etc do the following work and modifications.
1. Cylinder head and cylinder block, right front 3 cylinders, looking down from above you will see very small water transfer ports taking water from the block to the head, these are usually 1/4" in dia. Increase all of these "on this area only" to the largest size you feel comfortable to do, keeping them matched to each other. We usually do these to about 7/16" or so.
2. modify the gasket to match.
3. clean and check the water transfer tubes between right and left sides, inside the block.
4. Top pipes from rear of inlet manifold to front water outlet.
These pipes should CROSS OVER right front to left rear and vice versa! they only need to be about 1/2" dia though as too big and you get no cooling on the front right 3 again!
5. If going performance route you can also make external piping to both sides and front and rear equally, this will give you a much better and much less heat temperamental V12 if you intend to drive large hills and mountains etc.
Radiator and general cooling wise.
1. Make sure you have a NEW core! old ones will never clean well enough and an engine rebuild is far more costly than a new core!
2. Remove the heat shrouds from around your exhaust manifolds and cover the exhaust with Thermotec exhaust bandage, do this well and put it on "Very Wet" This will keep hot exhaust out of your engine bay but also allow the hot air that has gone through the radiator to escape to the outside via those lovely big louvres. If you imagine the air trying to get past the engine under the car you will see why V12s regularly over heat! Especially if you remember that ALL old cars and most moderns have a positive pressure under the car when at cruising speeds! Thus hindering the cooling further!
3. Then the final cooling "Coup de gras" is to replace your fan blades for those of a Jaguar Mk11, these are of much better design, flow more air, sap less power and look good also! Easy to fit with only some hand tools and a bit of thought!
A non overheating V12 will emerge, even with a short rad DHC up the mountains! But keep the cooling system clean!
Good luck.
Julian