Cascade Crew

LB985IROC · Posted: Mon Dec 11, 2006 11:53 am Post subject: throttle body bypass?

theres thes bypass kits that are like $10 and clame 6-8hp at the wheels i doubt that much but has anyone used one? does it do anyhting??? the theory just doesnt work as well as they say it does to me

Twilightoptics · Posted: Mon Dec 11, 2006 12:14 pm Post subject:

Um the theory is that by not passing HOT coolant through your throttle body, you have a greater chance of keeping the air intake charge cooler, yeilding a more dense charge, and thus making more power.

It is a noticable difference, and it is really easy to do.

You don't need $10 to do it, you need a long hose with a 90 or 135º bend at the end to come off and go to your firewall. You can run without the bend but I liked having it there.

Or heater valve, whichever what yours is set up.

Xophertony · Posted: Mon Dec 11, 2006 12:32 pm Post subject:

doing it on my v6 car was free. i reused existing hose and clamps. i spent about 4$ doing it to my L98 since it needs a bit more hose.

aaron_sK · Posted: Mon Dec 11, 2006 1:30 pm Post subject:

Did it on my L98. No kits needed. Just bought a foot of heater hose at Shucks for a couple bucks and nicked two hoseclamps from my Dad's garage. You'll notice it especially after a long freeway drive, it does seem to get up a little quicker.

I would imagine even more on your car, since you're probably still running a stock t-stat.

As another nice bonus, I don't burn myself every time I bump the upper plenium and TB when I'm under the hood. Rolling Eyes

LB985IROC · Posted: Mon Dec 11, 2006 1:54 pm Post subject:

blue89 · Posted: Mon Dec 11, 2006 2:28 pm Post subject:

I just did the same thing to my LT1 car. It helped out a lot since the hoses run everywhere on that engine.

iansane · Posted: Mon Dec 11, 2006 2:34 pm Post subject:

blue89 · Posted: Mon Dec 11, 2006 2:42 pm Post subject:

Is it okay to remove that valve? My bro is having problems with getting hot water to the heater core (simple answer will do, I don't want to hijack his thread).

The TB bypass made a huge difference in my V6 car. All I had to do is bend the hose over to connect to the other tube! Took me 5 minutes. It took care of a rich idle condition due to the IAT would measure 70* air, but the intake heat soaked at 170*+.

Twilightoptics · Posted: Mon Dec 11, 2006 4:17 pm Post subject:

yep. ditch the valve. make sure you cap the vacuum line though.

My HSR still gets hot. I do like to run alot of timing though. Certainly cooler than TPI especially before bypass.

My cruise MAT is around 110º my idle on 80º day is closer to 140

LB985IROC · Posted: Mon Dec 11, 2006 4:23 pm Post subject:

I WAS THINKING ISNT THE THROTTLE BODY COOLANT VEIN ONLY IN THE TB NOT INTO THE MANIFOLD? IF IT IS ON ITS OWN LOOP I WAS THINKING WHY NOT RUN SOME KIND OF COOLER THROUGH IT LIKE SHOOT NITROUS OR CO2 INTO IT PERIODICALLY TO COOL IT DOWN BEFORE A RACE OR SOMETHING...... IDK REALLY JUST A RANDOM IDEA HAD ALOT OF SPARE TIME TO THINK ABOUT IT TODAY NOTHINGS GOING ON AT WORK....BUT IT WOULD BE SUPER COLD FOR THE INTAKE AIR....

Twilightoptics · Posted: Mon Dec 11, 2006 4:46 pm Post subject:

Coolant flows THROUGH the throttle body itself.

LB985IROC · Posted: Mon Dec 11, 2006 4:56 pm Post subject:

im aware of that im just thinking somehow you could run a co2 line through the TB coolant vein or run a line out to a remote tank with a samll electric pump and when you go to race fill the take with ice and add water and then you have really cold water running through your TB and just insulate the tank so it stays cold for the day its a pretty simple concelt to think of you just have to make it happen no hot coolant= cooler intake air temps=more power ice cold water cuirculating throughcooling veins=super cold intake air= even more power!!!

Twilightoptics · Posted: Mon Dec 11, 2006 4:59 pm Post subject:

There comes a point when the air gets too cold. Things start condensing and ice forms Laughing

QwkTrip · Posted: Mon Dec 11, 2006 5:12 pm Post subject:

I had throttle body bypass on both my LT1 Vettes. It was a noticeable improvement in warm weather. Be careful in winter. There is a purpose for the coolant passing through the throttle body. It quickly warms the air charge for better driveability in winter and keeps the throttle body from icing. If the conditions are right, you run the risk of the throttle body icing up and it won't close when you let off the throttle. That would be the beginning of a very exciting day!

I'm not sure why you would use nitrous to cool the throttle body. It might have some effect on air temperature but not half as well as putting the nitrous straight into the intake. That will cool the air better and you get the added benefit of extra power the nitrous delivers.

LB985IROC · Posted: Mon Dec 11, 2006 5:17 pm Post subject:

well after thinking on it all day use a tank like a coolant overflow or something like that wiht a low pressure electric pump forcing the water in a loop through the TB and back into the take and on hot days you can fill ti with ice and water for a supercold charger running through yuor throttle body and when you donw ant to use it unhook the pump or turn it of via a switch you installed

QwkTrip · Posted: Mon Dec 11, 2006 6:31 pm Post subject:

It's an interesting idea. The main problem here is that the throttle body wasn't designed as a heat exchanger and won't take much heat out of the air charge. The air passes through the throttle body so fast that it won't have much (if any) effect on the air temperature. Also, the intake manifold is just a big heater that will heat the intake air again.

If you could use that ice water to cool the entire intake manifold you might start seeing results. Is there a way you could use the tank to circulate ice water through a cooling blanket attached to the manifold?

LB985IROC · Posted: Mon Dec 11, 2006 7:24 pm Post subject:

i dont see why not if you can make something work its really a thought i havent gotten into designing it but i do plan to try and make it work your idea is right though the intake needs to be cooled as well this will take some experimentation

QwkTrip · Posted: Mon Dec 11, 2006 7:59 pm Post subject:

Let us know what you come up with. Sounds like a neat concept! Thumbs up

LB985IROC · Posted: Mon Dec 11, 2006 8:06 pm Post subject:

maybe if somehow i could make it so it refridgerates the tank so the water is always cold and it wond need ice added....

aaron_sK · Posted: Mon Dec 11, 2006 9:15 pm Post subject:

Lmao... to much work for whatever benefit you might get. Besides, once you get below freezing, like QwkTrip and Paul already mentioned, you can run the risk of your TB freezing. I can imagine that wouldn't be very fun, especially at the track.

Ian, after I did mine (in the middle of June) my TB was normal temp, but the back part of the upper plenium still got warm (though not as warm as before).

I kept my coolant valve. Correct me if I'm wrong, but doesn't it just keep pressure out of the heater core unless you need it? Seems like it would mean less likelyhood of a leak in the summer.