Drag Racing Discussions > Front Engine Dragsters

water overflow tank ? size?

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ricci32:
Hey need a little advice i have picked up a gasoline powered dragster for 1/8 mile nostalgia racing. It has a mild small block on gas  intake has a fill neck and the block heads and intake are full of water no water pump or radiator , filler neck has a 22lb radiator cap with overflow to a 1 quart vented catch tank. it was run like this for years water drains on sides of the block . is one quart enough, is vented ok.

GlennLever:

--- Quote from: ricci32 on May 15, 2014, 07:13:11 AM ---Hey need a little advice i have picked up a gasoline powered dragster for 1/8 mile nostalgia racing. It has a mild small block on gas  intake has a fill neck and the block heads and intake are full of water no water pump or radiator , filler neck has a 22lb radiator cap with overflow to a 1 quart vented catch tank. it was run like this for years water drains on sides of the block . is one quart enough, is vented ok.

--- End quote ---

Seems small to me for gas (gets hot). You might be ok if you check it after each run.

PSweeney:
I can't see that it's actually doing a lot either.  I think the risk of  either being shutdown for a leak or getting water under the slicks is greater than any negative affect of running the block dry.

If you want to run coolant and lap the car, put a pump, radiator and fan on it and get the full benefit of running coolant.  I also found running gas, locked out timing helped enormously in controlling heat into the coolant. 

ricci32:
Where is Bruce when we need him. LOL

masracingtd1167:
I don't think that a quart bottle would be too small as long as you don't get it super hot . I mounted my overflow tank in the back of my car with an overflow line that is attached to my wheelie bar . If it dose overflow it won't get under your tires

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