How does it works?


I found a SPOON coolant cap for cheap......and it compression is 1:3.5 and the original one is 1:1

What is the different between them?

The people in the auto shop told me it can make my car faster?

Is it true?


anyone knows?

That's 1.35, not 1:3.5. All that means is it takes 1.35 kg/cm2 of pressure to open the overflow valve, instead of 1.1 like the stock one. Theoretically, that would allow your coolant to get hotter before it starts producing air bubbles, e.g. boiling, which theorically means it won't overflow as quickly when you're overheating.

Unless you're running so hot that your loosing all your coolant, I wouldn't worry about it. And, no, it won't make your car go faster...

 

so what if i replace the 1.35 coolant cap to my car?

will it damage my engine?because the compression is higher?

anyway thanks

 

so what if i replace the 1.35 coolant cap to my car?

will it damage my engine?because the compression is higher?

anyway thanks

I think BDC is trying to say that it would be pointless to get unless you run the hell out of your engine in hot tempatures. For instance if your always at the track and live in Phoenix, AZ(when its 100+ degrees), then you MAY need it. But for people that drive hard once and a while and live in a cooler climate, its pointless.

 

I think BDC is trying to say that it would be pointless to get unless you run the hell out of your engine in hot tempatures...

Exactly!

I'm not going to go look it up and give you exact figures, but a standard radiator cap opens at around 15 psi. And, I don't know exactly what that converts to in kg/cm2, but assuming the OEM 1.1 kg/cm2 radiator cap equals 15 psi - then a 1.35 kg/cm2 cap would equal roughly 19 psi.

Spoon doesn't make anything cheap. Their radiator caps are probably 35 bones compared to 10 bones for everyone else. Going from a 15 psi radiator cap to a 19 psi radiator cap is not going to hurt your car and it isn't going to make it faster either.

So, what you need to ask YOURSELF is, "Is it worth [whatever the price is] to own a Spoon radiator cap?" knowing that is won't do squat...

 

It is the secret 20hp mod that nobody knows about.... lol

 

i've got the greddy one for looks only... does keep the engine significantly cooler though..

 

for once, BDC may be wrong. ok, the stock pressure cap is rated at 15 psi, that means that when the pressure in the cooling system reaches 15psi the coolant cap opens, and flows coolant into the reserve tank (that funny looking think next to the fan) if you put a 19psi cap (estimated) on, then the system will build to 19 psi before pressure is released. the stock system is built for 15 psi, if 19psi is in there you could blow cooling lines, or blow the sodder on the radiator, causing a sevear coolant leak. honda designed the cooling system for a specific amount, surpassing that amount will only lead to trouble. its like slapping a turbo on a stock DX motor and pushing 15 psi, the system cant hold that much, and will blow up. just buy a stock radiator cap, or if you want ill sell you a Spoon Sports cap with a stock psi rating

 

Putting a spoon or greddy cap will not blow up your cooling system! I have seen many setups using them and have yet to hear of a problem....maybe if your hoses already have cracks in them or something...but that is a very small raise in pressure, the hoses are rated much higher pressure than that, it won't cause any problems...

 

Putting a spoon or greddy cap will not blow up your cooling system! I have seen many setups using them and have yet to hear of a problem...

I agree! Euro cars run caps all the way up to 2 bar, or 28 psi, with no problems. I wouldn't suggest someone try that with a CiViC, but 19 psi won't cause any problems...

 

ok, yea your hoses arnt going to explode in a fantastic eruption, and your radiator wont detonate, but it will cause problems. with the exception of aftermarket radiators, Fluidyne, etc, radiators are poorly constructed.
a radiator is made up of a core, and 2 tanks. go to your car and look at your radiator. the core are those tiny ribbon looking things in the middle. coolant flows in those tiny passages to have extra heat taken away by air passing through it. those passages arnt that thick. its aluminum, they're pretty weak too. how many people have some of those ribbons slightly bent from rocks, or a dropped wrench of some sort? those bends create weak points in the material. if you cause the system to build more pressure before being released, you risk rupturing those weak points, causing coolant to leak out. yes leak, not gush out and spill onto the ground, but leak. going unnoticed, the leak allows air into the cooling system, and can damaged the engine by causing bubbles.

the 2 tanks on a radiator are of the same weak aluminum, but much thicker. to save on cost and time, manufactures attach the tanks to the core by means of sodder. yes the same stuff used in electrical wiring. its 3 times cheaper and easier than welding, and produces close to the same results. the downside to sodder you ask? its fairly weak. after a radiator is assembled in the design phase, the manufacturer no doubt tests these radiators. makes sense to right? and they test it and find that the OPTIMUM psi in which the radiator can hold is 15 psi. the people who made the radiator are telling you how what is supposed to be at for maximun efficiency without leaking. yes, there is some leeway. i bet the radiator can hold 16, 17, or even 22 psi, and will still hold, but coolant is corrosive. dont belive me? wash your car in stright engine coolant, no water and see how your paint looks. the coolant over time eats away at the sodder, and the water does its share of rusting the inside, making the radiator even weaker. and you still want to put more pressure inside of it?

oh wait, i almost forgot the heater core! made the exact same way as a radiator, the heater core lives under the dashboard typically above the glove box. now, knowing how "cheaply" constructed these things are, would you want to increase the risk of having that heater core leak, and get coolant all over that lovely "Civic Type R 100% authentic" floor mats you bought on E-Bay for 200 bucks? no.

yes spoon makes some great products, but their primary focus is on purpose built RACE CARS, whose cooling systems are DESIGNED for higher psi's, and guess what, race cars dont have heater cores, so if you buy an coolant cap with a higher than stock rating, feel free to also buy a new radiator, heater core, and various other componets, just because they will fail much sooner than normally.

 

The only time i've seen cooling system failure is when people do not MAINTAIN their car....they never change the coolant (leads to corrosion of radiator), and never check old hoses for cracks,etc...

It all comes down to maintaining your car...if your car isn't properly maintained, any part of it, it will ultimetly lead to failure of some sort, blame in on what you will...

 

water is water, it corrodes no matter what, but yes maintinece is a key factor in the life of your car, but so is keeping things at factory specs. ok, the helms manual says you're supposed to torque the head bolts to 65 ft-lbs. you torque to 50, what happens? possible loss in compression, blah blah blah. ok, so say you torque to 85 to eliminate that possibility. then what happenes? snapped bolts and/or cracked heads/block. the manufacturer designed the part, they know what its strenghths and weaknesses are

 

This is only a small raise in pressure, it isn't going to hurt...that is like saying that if you torque your lug nuts at 82ft/lbs instead of the "factory-spec" 80ft/lbs, then your wheels will fall off

Maybe if someone was wanting to put a 50psi cap on, then I would tell them their radiator or hoses could blow up

But enough with the argument...if you think it will hurt your car, don't do it, but if someone else wants to do it, let them