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How does a turbo car go in reverse?

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kornholio788

Joined: May 02 2005
Posts: 9748
Location: Tosa, WI


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Post Tue Jul 01, 2008 6:53 am

Don't think we have any colbolt guys here. But this thread is indeed quite epic.

robbie

Joined: Apr 23 2006
Posts: 5754


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Post Tue Jul 01, 2008 6:54 am

Saw this last week was funny ****.
kornholio788

Joined: May 02 2005
Posts: 9748
Location: Tosa, WI


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Post Tue Jul 01, 2008 6:56 am

His first post here.
So we all know that the supercharged engines need the intake bypass valve so they work in reverse. Otherwise the supercharger would just suck all the air out of the cylinder. So knowing that, how does the turbocharged version work in reverse? The engine is trying to suck air backwards, yet the turbo wants to spin forward so I don't see how it works. Is there some sort of exhausting intake bypass valve on the turbo version? Also, if it does have the valve, does that also mean that it can make boost in reverse? Like how much boost? Like 5 psi or does it go over 20?

Can anyone help me sort this out?



Then after a bunch of OMG WTF! FAIL pics and posts he actually posts this haha.


Real reason I'm asking because a friend is getting a 93 Corvette and he wants to race me. I said we can race to 30 mph because I think if I go from reverse I'll get better weight transfer and beat him, but I'm concerned about making full boost since the turbocharger will be spinning backwards.
PwrRngr

Joined: Jul 19 2007
Posts: 4407


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Post Tue Jul 01, 2008 7:20 am

Here's my favorite part (it's a guy talking about engines that can run in reverse)...
Quote:
Only thing that does that is Ski Doo Snowmobiles (last time I checked)

then some fool adds more....
Quote:
this is entirly possable because the bike is a two stroke and can run backwards but a four stroke engine CAN NOT RUN BACKWARDS just so we get that straight. we should not try to confuse him any more than he is right now.


These guys should be made fun of just like the original guy. Does someone care to explain how air is going to flow the wrong way through the poppet valve? or how you're going to get any fuel into the cylinder if it's drawing from the exhaust?

I'm not sure if this was later clarified to these two morons (I call them morons for making fun of someone for a misconception and then making the same dumb misconception). icon_rolleyes.gif
Everyone makes a mistake sometimes. Everyone's isn't just as big of a mistake.
Kierra

Joined: Mar 01 2008
Posts: 1345
Location: Cherry Hill, South Jersey


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Post Tue Jul 01, 2008 7:23 am

invisible wrote:
chipsgt wrote:
Whats worse than Epic?

Complete and Utter?


I dunno...The universe wasn't ready for a fail this big.



hahaha wow this thread of theirs is the best ive seen in a while
Kierra

Joined: Mar 01 2008
Posts: 1345
Location: Cherry Hill, South Jersey


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Post Tue Jul 01, 2008 7:32 am

my next favorite part
krispy wrote:

geez, you guys post quickly, I was busy running an experiment to try to figure this out for myself

I was thinking "how can you prove that the engine is running backwards" when it hit me, I can use a balloon. So I got a balloon and put it around the exhaust tip. I figured when I start the car it will inflate, but when I put it in reverse it will suck the air and balloon back in. So I started the car up and went in reverse about 10 feet then turned the car off. I went and checked the tail pipe and sure enough there was no balloon, it got sucked inside the tail pipe. So I got back in the car, started it up and drove forward about 5 feet. I got out and looked on the ground and the balloon was right behind the tip. So when I pulled forward it shot the balloon that was in the exhaust back out and thats why it was on the ground.

So yea, engine runs in reverse in reverse, now I just need to do it again and see if I get full boost.


umm.. maybe its because the balloon came off and you ran over it and it was under the car? then when you pulled forward it was no longer under the car?


and the best pic: http://i303.photobucket.com/albums/nn129/derhase18t/Cobalt.jpg
02BlueStang

Joined: Dec 13 2004
Posts: 4757


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Post Tue Jul 01, 2008 10:03 am

Proof that Cobalt drivers are flippin retared icon_neutral.gif
markwerline

Joined: Feb 08 2008
Posts: 1104
Location: Southern Cali


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Post Tue Jul 01, 2008 11:11 am

this guy whould not procreate.
TeDy

Joined: Jun 07 2007
Posts: 218


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Post Tue Jul 01, 2008 2:40 pm

02BlueStang wrote:
Proof that Cobalt drivers are flippin retared icon_neutral.gif

It was one guy trying to be smart... So all Cobalt drivers are retarded? Maybe thats why Ford guys can't spell..
kornholio788

Joined: May 02 2005
Posts: 9748
Location: Tosa, WI


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Post Tue Jul 01, 2008 2:42 pm

TeDy wrote:
02BlueStang wrote:
Proof that Cobalt drivers are flippin retared icon_neutral.gif

It was one guy trying to be smart... So all Cobalt drivers are retarded? Maybe thats why Ford guys can't spell..

User posted image
robbie

Joined: Apr 23 2006
Posts: 5754


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Post Tue Jul 01, 2008 2:47 pm

We can't spell because we are two busy passing the chevy's. biglaugh.gif

Jk with you man though this guy had balls to bring it as far as he did.
lbjshaq2345

Joined: Jul 11 2007
Posts: 1524
Location: Jonesborough, TN


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Post Tue Jul 01, 2008 2:55 pm

User posted image

icon_eek.gif icon_eek.gif
robbie

Joined: Apr 23 2006
Posts: 5754


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Post Tue Jul 01, 2008 3:01 pm

LMAO OMG!!!! wow icon_neutral.gif
guthix12

Joined: Aug 21 2007
Posts: 287
Location: CT


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Post Tue Jul 01, 2008 3:02 pm

If you keep reading, or look at his other posts, it shows he's being sarcastic. He doesn't really think his engine runs in reverse. Funny though nonetheless.
ChevyCaprice9C1

Joined: Jan 18 2008
Posts: 2239
Location: trenton ohio


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Post Tue Jul 01, 2008 4:49 pm

really funny post, and robbie do you really want to start the ford VS Chevy battle
robbie

Joined: Apr 23 2006
Posts: 5754


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Post Tue Jul 01, 2008 4:53 pm

^^ You see the JK means i was kidding man i don't care my friend has a SS cobalt and it is hell on wheels i love the damn thing.
KrzysD

Joined: Nov 07 2007
Posts: 1138
Location: Streamwood IL


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Post Tue Jul 01, 2008 5:31 pm

i can actually run my rc car backwards lol dont run for no more the 2 seconds, but it does work, err idk why no one thought it was a joke?
Tdawgthegreatest

Joined: Jul 22 2007
Posts: 5093
Location: Florence, Oregon


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Post Tue Jul 01, 2008 5:51 pm

robbie wrote:
We can't spell because we are two busy passing the chevy's. biglaugh.gif

Jk with you man though this guy had balls to bring it as far as he did.


Mod: Your picture quote below says it all. haha.

*Picture says* "Delete meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
Kierra

Joined: Mar 01 2008
Posts: 1345
Location: Cherry Hill, South Jersey


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Post Wed Jul 02, 2008 7:39 am

i dont see how he could even play it off as a joke
or how it could be considered a joke at all..

"Oh ohkay guys you got me, i knew all along, im no idiot!!"
TRogers

Joined: Feb 09 2005
Posts: 6083
Location: Ohio


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Post Wed Jul 02, 2008 7:45 am

puppy_dog_eyes.gif puppy_dog_eyes.gif puppy_dog_eyes.gif
Neodudeman

Joined: May 24 2008
Posts: 99


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Post Wed Jul 02, 2008 8:55 am

Omg that was awesome. It was like, 20 pages of people making epic.
02BlueStang

Joined: Dec 13 2004
Posts: 4757


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Post Wed Jul 02, 2008 9:25 am

TeDy wrote:
02BlueStang wrote:
Proof that Cobalt drivers are flippin retared icon_neutral.gif

It was one guy trying to be smart... So all Cobalt drivers are retarded? Maybe thats why Ford guys can't spell..


twas a joke....should have worded it differently icon_wink.gif

and my spelling is quite fine thank you very much....of course I was also dumb enough to pay thousands of dollars for a degree I dont use very much icon_cry.gif

Now I must leave to go put my K & N on my tailpipe to make sure I get the best performance backing out of my parking spot icon_razz.gif
Kierra

Joined: Mar 01 2008
Posts: 1345
Location: Cherry Hill, South Jersey


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Post Wed Jul 02, 2008 9:29 am

haha blue
knatebetz

Joined: Apr 19 2008
Posts: 1504
Location: Nebraska


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Post Wed Jul 02, 2008 9:32 am

haha always thought the car ran only 1 way! theres a reverse?!?!?? lol jk
Losing quickly

Joined: Apr 26 2005
Posts: 5706
Location: SC


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Post Wed Jul 02, 2008 9:34 am

You mean the whole engine doesn't turn around in the bay so it can go backwards? WTF?
02BlueStang

Joined: Dec 13 2004
Posts: 4757


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Post Wed Jul 02, 2008 9:36 am

Losing quickly wrote:
You mean the whole engine doesn't turn around in the bay so it can go backwards? WTF?


nooo silly.....jeez, everyone knows it relocates to the trunk...how can an engine just turn around and run backwards...dont ya know anything icon_razz.gif
Kierra

Joined: Mar 01 2008
Posts: 1345
Location: Cherry Hill, South Jersey


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Post Wed Jul 02, 2008 9:42 am

02BlueStang wrote:
Losing quickly wrote:
You mean the whole engine doesn't turn around in the bay so it can go backwards? WTF?


nooo silly.....jeez, everyone knows it relocates to the trunk...how can an engine just turn around and run backwards...dont ya know anything icon_razz.gif


hense porche and ferrari engine locations
those things are great in reverse
Losing quickly

Joined: Apr 26 2005
Posts: 5706
Location: SC


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Post Wed Jul 02, 2008 9:44 am

Doh! No wonder everything in my trunk gets screwed up after I go in reverse!
mx107marlin

Joined: Aug 12 2007
Posts: 3095
Location: Fairborn, OH


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Post Wed Jul 02, 2008 11:43 am

Quote:
This would only happen in old cars. Newer cars compensate for this fact by having a large servo that flips the engine upside down so it continues to run the same direction while propelling you backwards.

The only downside is turning that large rotational mass will shift your car around. This effect is called: "four cylinder thrash".

It's important to note, that while the engines of old couldn't turn over like they do now; the benefit of the old setup was that the reverse combustion cooled the engine down. Though it would save on gas mileage. This change is the chief reason that while technology has gotten better, gas mileage has not. (Stupid congress, legislating that all engines flip)

Although, were you to race in reverse like you said, you could definately over freeze your engine. So be careful.


Best reply yet!!
kornholio788

Joined: May 02 2005
Posts: 9748
Location: Tosa, WI


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Post Wed Jul 02, 2008 11:50 am

hahahah OH man that post is awsome hahah. "You could definately over freeze you engine." hahaha OH MAN that is such a funny post.
mx107marlin

Joined: Aug 12 2007
Posts: 3095
Location: Fairborn, OH


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Post Wed Jul 02, 2008 11:54 am

User posted image

Final Win
guthix12

Joined: Aug 21 2007
Posts: 287
Location: CT


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Post Wed Jul 02, 2008 3:50 pm

mx107marlin wrote:
Quote:
This would only happen in old cars. Newer cars compensate for this fact by having a large servo that flips the engine upside down so it continues to run the same direction while propelling you backwards.

The only downside is turning that large rotational mass will shift your car around. This effect is called: "four cylinder thrash".

It's important to note, that while the engines of old couldn't turn over like they do now; the benefit of the old setup was that the reverse combustion cooled the engine down. Though it would save on gas mileage. This change is the chief reason that while technology has gotten better, gas mileage has not. (Stupid congress, legislating that all engines flip)

Although, were you to race in reverse like you said, you could definately over freeze your engine. So be careful.


Best reply yet!!


Damn! I was going to quote that...

Pretty funny/true what someone said tho... The exhaust and the intake would trade places... K&N Filters on the Exhaust tip.
Tdawgthegreatest

Joined: Jul 22 2007
Posts: 5093
Location: Florence, Oregon


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Post Wed Jul 02, 2008 4:02 pm

I dont even think the K&N on the exhaust would help...with all the carbon on the inside of the exhaust...*shudders*
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