Help deciding Roots Supercharger drive ratio

[rubydist]

I don't think spraying water on the i/c will accomplish much. In order to have a big impact in a short amount of time w/ a relatively small amount of water, you need to turn the water into steam. This won't happen if the charge temps are running in the 180 degree range that is typical for M90 outlet temps. My guess (without doing any calculations) is that the air temp with or without water will only be ~10 degrees different.

 

[shomethe$$$]

I don't think spraying water on the i/c will accomplish much. In order to have a big impact in a short amount of time w/ a relatively small amount of water, you need to turn the water into steam. This won't happen if the charge temps are running in the 180 degree range that is typical for M90 outlet temps. My guess (without doing any calculations) is that the air temp with or without water will only be ~10 degrees different.

your could be right but where could I mount a water-to-air intercooler in my setup?

 

[kzoosho]

On the tb side right where the battery was. its not that big and the heat exchanger can be mounted anywhere as long as you have air flow. I am actualy thinking about going water to air on my turbo car.

 

[Off Road SHO]

Spraying of water and or alcohol/water mix on your air/air intercooler will lower the temperature of the intercooler fins and tubes quite a bit due to the effect of evaporation. The intercooler fins and tubes can then take more heat out of the charge air.

In an air to air intercooler, the cooling air is only as cool as the ambient air temperature. In an air-to-coolant intercooler, you can further reduce the coolant's temperature with ice or dry ice. This comes in real handy when you're needing short bursts of really cool, dense air, like in drag racing or standing mile events, even on the Salt Flats.

Tom

 

[shomethe$$$]

Spraying of water and or alcohol/water mix on your air/air intercooler will lower the temperature of the intercooler fins and tubes quite a bit due to the effect of evaporation. The intercooler fins and tubes can then take more heat out of the charge air.

In an air to air intercooler, the cooling air is only as cool as the ambient air temperature. In an air-to-coolant intercooler, you can further reduce the coolant's temperature with ice or dry ice. This comes in real handy when you're needing short bursts of really cool, dense air, like in drag racing or standing mile events, even on the Salt Flats.

Tom

All good replies, thankyou.

So Offroad, what car did your M112 come off of?

 

[Off Road SHO]

All good replies, thankyou.

So Offroad, what car did your M112 come off of?

It's a brand new unit that was going into the Lightning. It's new, still in plastic and boxed. We're working on the baseplate of the plenum box that the SC will rest on.

We have the intake phenolic spacers done and the intake spacers that will help us clear the fuel rails done. Working on machining the baseplate of the plenum. The top plate of the plenum will be different for every different blower bolt pattern, and we will have one for just a 2" inlet for the centrifugal and turbo guys that realize that the snakes end up being a restriction above 5 psi.

Tom

 

[shomethe$$$]

It's a brand new unit that was going into the Lightning. It's new, still in plastic and boxed. We're working on the baseplate of the plenum box that the SC will rest on.

We have the intake phenolic spacers done and the intake spacers that will help us clear the fuel rails done. Working on machining the baseplate of the plenum. The top plate of the plenum will be different for every different blower bolt pattern, and we will have one for just a 2" inlet for the centrifugal and turbo guys that realize that the snakes end up being a restriction above 5 psi.

Tom

I like this one

http://cgi.ebay.com/ebaymotors/07-X...014QQitemZ330233412387QQrdZ1QQsspagenameZWDVW


I think this would be the only one that could fit where the AC was mounted.

 

[jthod]

Some of the STi's come stock with a sprayer, you just have to be spraying in advanced to cool it down. It's not like hitting the NAWZ button yo! Aftermarket kits should be easy to find, just buy one for a Subi.

 

[shomethe$$$]

On the tb side right where the battery was. its not that big and the heat exchanger can be mounted anywhere as long as you have air flow. I am actualy thinking about going water to air on my turbo car.

After doing more research a water-to-air intercooler sounds like a better option, I can mount it where the air filter is now since the supercharger TB is near the starter on this setup.

frozenboost.com or
http://www.siliconeintakes.com has good information and the pump is a Bosch

http://www.boschmotorsandcontrols.c...gate/wasserumwaelzpumpen/0392022002/index.htm

but doesn't say the draw amps, let me know what you all think

 

[shomethe$$$]

Is your M90 ported?

Here's a quick porting job that could help other than buying a whole new casing


BEFORE
PIC^

BEFORE
PIC^

AFTER
PIC^

AFTER
PIC^


BEFORE
PIC^

AFTER
PIC^
Do you all think the outlet porting should be done like this, I thought the lobes run on that surface that was cut away. lmk

 

[rubydist]

iirc, the outlet side work that was done on that one will just make it more noisy, won't really do anything for flow. The inlet side work should help it breathe better.

 

[SASHO91]

It should drop outlet temps though.

 

[shomethe$$$]

Here's a quick porting job that could help other than buying a whole new casing


BEFORE
PIC^

BEFORE
PIC^

AFTER
PIC^

AFTER
PIC^


BEFORE
PIC^

AFTER
PIC^
Do you all think the outlet porting should be done like this, I thought the lobes run on that surface that was cut away. lmk

Could I get a handheld dremel tool to do this? what about all the metal shavings that come out, gonna be hard to keep it clean

 

[SASHO91]

A dremel would take FOREVER to get those results... Pick up a die grinder instead, with the appropriate bits.

 

[shomethe$$$]

A dremel would take FOREVER to get those results... Pick up a die grinder instead, with the appropriate bits.

sorry, thats what i meant

 

[SASHO91]

Sure. However, if you are not going to pull the Eaton apart, I would go to great lengths to ensure that no shavings find their way into the housing.
Even afterwards, I would still run some type of oil (0w-30) through the unit to help catch any smaller particles.

Allthough, i'm sure brake clean might work... don't know how it would react to the teflon though.

 

[rubydist]

Do not attempt to do that w/o pulling the blower apart. Its really easy to pull the rotors out, and then put some tape over the rear bearing openings, and then you can grind away to your heart's content w/o having to worry that you are going to injest a bunch of aluminum into your engine when you are done.

BTW, wear a good face/dust mask when you are grinding on it - aluminum particles in the lungs or eyes can lead to a very nasty type of blood poisoning that you would be much better off to avoid!!

 

[thecrew2999]

Do not attempt to do that w/o pulling the blower apart. Its really easy to pull the rotors out, and then put some tape over the rear bearing openings, and then you can grind away to your heart's content w/o having to worry that you are going to injest a bunch of aluminum into your engine when you are done.

BTW, wear a good face/dust mask when you are grinding on it - aluminum particles in the lungs or eyes can lead to a very nasty type of blood poisoning that you would be much better off to avoid!!

wuss... i ported enough aluminum to **** 3 horses by now