blown cooled yeah i forgot in the last post..

[Evil Sneak]

i see a guy runs a blower on his v8

but it has no intercooler or blow off valve.

detonation city?

in my eyes,,, more denser cooler air from an intercooler would allow for more power at lower boost levels. ie longer motor life.

maybe cause the there is no room for an intercooler? shrug

 

[GordoSHO]

For your question about the supercharger having a intercooler. In supercharging the blower is ran off of the engine and is pulling cold air from the filter and forcing it into the engine on top of the engine or to the side in the SHO's case. In the turbo the hot exhaust gases turn the turbine and that in turn forces the air into the engine. The tubo gets very hot and heats the air up before it goes into the engine, so you install an intercooler to cold the air before it goes into the engine, causing colder, denser air. THe supercharger does not heat up enough to change the air temp per it is not in ran by the exhaust, just the drive belt. Hope that helps....

 

[Evil Sneak]

i have NEVER seen a heavily modified blown car with no cooler. a supercharger creates alot of heat.

http://cobramuscle.stangnet.com/mycobra.htm my buddys SC mudstain. 3 core intercooler.

every new cobra sc'd has a cooler. factoid

every SVT lightning is intercooled. factoid

nobody can tell me that a sc does not produce enough heat to intercool it simply isnt true.

another supercharged v8 page... all are intercooled. http://www.toohighpsi.com/index.htm
boink
call your next witness.. the commonwealth rests.. LOL

 

[mofosho]

yeah, suppercharges spin at somewhere around 65,000 rpm. They get very hot. My buddies SC SVT contour with about 8 pounds of boost gets intake temps in the lower 200 degrees.

 

[RStalveyARFF]

it depends on what setup. Both SVT setups you listed have the Roots design blower, which do add some heat. thing is with a FWD setup where you already have almost NO room, you wouldn't want an intercooler anyways. Why? intercoolers can **** boost, which isn't that big of a deal on the turbo cars since they can already be pushing out 25psi anyways, but with a centrifugal blower, you're talking about losing 4-5 lbs. 2 or 3 v6 members use a water to air aftercooler to chill their intake charge, and kaotic sho uses a freon intracooler chiller. Fact is, with the relatively small boost figures a v8 owner would be running, figure 6-8psi on a stock v8, there's no need for an intercooler/aftercooler. AFAIK, Carter has a bypass valve on the car. It's usually bypass valves on SC cars, blowoff valves on turbo cars.
You state you've nver seen a heavily modified blown car without an intercooler. Well the Gen III is not a heavily modified blown car. 6-8psi is all that you're really looking at if you want to run it reliably. Pull up powerdyne's website. All of their kits are mostly 6psi for stock cars/trucks, for reliability.

 

[rjensen]

I've always considered cooler intake air "free boost"; colder air is more dense, which is what your trying to achieve anyway with a super/turbo-charger.

Regardless how you boost, temperature will increase accordingly (remember PV=nRT?). As pressure (P)increases, temp. (T)increases proportionatly. So if you expend all kinds of energy increasing pressure and allow temp to increase, your left with less air (boost) than you thought.

So, that guy who saw a pressure drop across his intercooler, was probably measuring a desired outcome, cooler, denser (more) air per unit volume.

rj

 

[SHOZ123]

The SCs heat the intake air when it's compressed. That's the reason for an intercooler.

 

[rjensen]

my point is, any compressor, sc, tc, ac, will heat the air. Ever lean on the high side of your ac? That's why it has a condensor hanging in front of your radiator, to cool the gas back into a liquid.

I've never measured it, but I can't imagine a significant amount of heat being transferred from the exhaust driven side of a turbo to the compressor side, considering the volume of intake air going through the thing.

rj

 

[Ian Macoomb]

The GTPs have no intercooler.

And yes an intercooler would help a good deal but it is not necessary. There's probably more examples of non intercooled supercharged vehicles than there are intercooled supercharged vehicles.

And like others have stated, it is not the exhaust gasses alone that increase the air temp. Anytime you compress a gas it will warm up.

 

[Mac98SHO]

Ian,

I heard the new GTP have Intercooler.

 

[NECGP]

Mac98SHO:
Ian,

I heard the new GTP have Intercooler.

Nope.

 

[stephen newberg]

"I've never measured it, but I can't imagine a significant amount of heat being transferred from the exhaust driven side of a turbo to the compressor side, considering the volume of intake air going through the thing."

Actually, I think the air does heat up a good deal. Not only is the exhaust very hot at that point, compression itself increases temperature. On two turbocharged vehicles I have had to replace housings on the turbocharger due to heat induced stress cracking. I am sure that an intercooler can be useful in lowering the injection air temperature, and would suggest that any turbocharger that uses one is probably a better system than one that does not. It is also worth keeping in mind that the intercooler can be used to cool the oil flow to the turbocharger bearings as well, which should considerably extend their expected life. They get very hot, and the better the cooling to them, the longer they will last.

pax, smn

 

[Evil Sneak]

(SNIP)It is also worth keeping in mind that the intercooler can be used to cool the oil flow to the turbocharger bearings as well, <<HUH?

how is that. maybe an oil cooler is what u were talking about?

my intercoolers cools air charge only.

 

[stephen newberg]

It depends on the design. I have seen intercoolers with hp oil lines for the turbo bearings run through them. From the factory, obviously. I did not mean this was a home garage job. Unless you have one heck of a home garage.

pax, smn