Spares and Ferm

aussie

aussie

Senior Member
hi guys just need your opinion on my intake manifold I am debating whether to remove the water going into the manifold .I do know cars used that system to heat the manifold to help running in cold weather can you think of another reason why it has water heating as most other inboards I have seen don't have it. could it be a quick fix merc done because of fuel sitting on the bottom of the manifold and not vaporizing
 
the water went to the manifold to cool the oil cooler that was on the bottom side(4bbl intake), if you are not running that cooler, you'll be OK without the intake being part of the system. Supposedly, you get 1 % power per 10 degrees cooler(F) the intake charge is. It may be a bit cold natured, but you'll probably be OK
 
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smokeonthewater said:
Is this a one piece intake and exhaust manifold? If so make sure you need water to keep it cool, not warm
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it will run the temp of the cooling system so it will be hot I was under the belief it was for cold starts to help carb engines run better in cold climates to reduce rough idle and poor cold performance
 
you need to keep the EXHAUST cool.. IE 200 degrees instead of 900

if it's just in the intake as ferm is pointing out then it may not be needed but you HAVE to have wet exhaust or your bellows and shutters will burn and your manifold will be WAY too hot
 
yes the intake side I was talking about I wanted to stop hot water from the cooling system going in the intake I am aware that the cooler the intake charge the better the performance . I need to look at the system when I get it back together. so what your saying is the the engine coolant cools the engine oil
 
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aussie said:
yes the intake side I was talking about I wanted to stop hot water from the cooling system going in the intake I am aware that the cooler the intake charge the better the performance . I need to look at the system when I get it back together. so what your saying is the the engine coolant cools the engine oil
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if you have the 4bbl intake, if you have the 2bbl intake, it doesn't have the oil cooler. Post up a pic of it
 
if the intake manifold was an original for a four barrel carburetor (Quadrajet) it would have the oil cooler, if it was for a two barrel carburetor(Mercarb) it will not have one. Post up a picture of the intake
 
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yes I have been looking at that forum and joined mine had the 2 barrel intake and I saw the 2 water feeds under the intake ill have to wait till I assembly the engine and then check out all the hoses and route them how I want thinking about using the blus hoses to smarten it up :haha:
 
I did do some research and one of the guys said that camshafts fail lobe when there reground I have seen it happen too a lot from not running the cam in properly --not using proper cam lube --not priming the engine with oil and turning the engine over by hand too many times before start up . I saw these lifters and they seem to be a good idea but how good they are and work I don't no never pulled down a engine that has had them what you think---going to buy a set

Howards Cams Direct Lube Extreme-Duty Mechanical Lifters
 
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