The Official Hot Rod Thread - Part 4: Burnouts for Distance

[bigretic]

My lift finally arrived, so i thought i'd stop in an see what was going on. That truck is beautiful.

 

[bobzilla]

Race car put down 221 to the rear wheels on a stock (tuned) 2 valve 4.6. Ford guys is that good?

Here’s the final look:

 

[bobzilla]

 

[Bigtanker]

Wow. Not what I was picturing.

What's up with the exhaust? Front exit tire warmer?

And does that have a vacuum of some sort to make it stick?

 

[indyblue]

This could be interesting, autonomous car race at the speedway this weekend.

https://www.indyautonomouschallenge.com/

 

[Jaybird1980]

View attachment 164419

This looks really fun.
What's the sheet metal along the sides for? Controlling airflow?

 

[Bigtanker]

This looks really fun.
What's the sheet metal along the sides for? Controlling airflow?

I know there are a type of cart that had a vacuum system to help create massive downforce by literally sucking the vehicle down to the track. That's what I was wondering if his car had or not.

 

[Jaybird1980]

I know there are a type of cart that had a vacuum system to help create massive downforce by literally sucking the vehicle down to the track. That's what I was wondering if his car had or not.

Interesting I've never heard of that.

 

[femurphy77]

Interesting I've never heard of that.

Yeah a lot of the little mod cars at the solo II nationals used to have one or two leaf blowers attached to the floor pans and with the integrated skirting they were creating huge amounts of down force. So much so that they were exceeding the designed maximum speed of the courses so I believe SCCA outlawed them a couple of years later.

 

[RustyHornet]

Prepping the race car to bring a new baby home sometime this weekend!

 

[churchmouse]

Prepping the race car to bring a new baby home sometime this weekend!

View attachment 164437

Perfect.
Looking forward to pics.

 

[Leadeye]

That new 572 Chevy crate engine has Camaro written all over it.

 

[bobzilla]

Wow. Not what I was picturing.

What's up with the exhaust? Front exit tire warmer?

And does that have a vacuum of some sort to make it stick?

No vacuum all passive. That can is the hemholtz resonator

 

[Jaybird1980]

No vacuum all passive. That can is the hemholtz resonator

So it's shaped like a venturi to create a low pressure area?

 

[ChristianPatriot]

Here’s the final look:
View attachment 164418

Is it all Mustang underneath?

 

[thunderchicken]

View attachment 164419

Is thia yours?

 

[bobzilla]

Is it all Mustang underneath?

Mercury grand marquis shortened 20”, ranger short side axle, engine set back and to the right, 4.6 2valve

Not mine personally, the team I’m on that has been building this since last November. Lots of man hours into it.

 

[bobzilla]

So it's shaped like a venturi to create a low pressure area?

The floor aero is to create a passive low pressure area to make down force. The hemholtz is supposed to be tuned to the engine at a certain distance etc to kill resonance. This was part of a free thrown away gm catback that we used to build the exhaust.

 

[Jaybird1980]

The floor aero is to create a passive low pressure area to make down force. The hemholtz is supposed to be tuned to the engine at a certain distance etc to kill resonance. This was part of a free thrown away gm catback that we used to build the exhaust.

I was talking about the floor. I've actually seen the resonator setup like that a couple of times before.
The floor aero is ingenious.

 

[churchmouse]

I was talking about the floor. I've actually seen the resonator setup like that a couple of times before.
The floor aero is ingenious.

Aero induced downforce was huge in Indy/open wheel for a long time. It generates a significant amount of downforce. The cars had side skirts along the outer body to seal to the track. USAc/Cart outlawed it.
The IMSA car I crewed on had “Huge” tunnels under it the did the same thing. They would actually suck a man hole cover off the street (some races were on street courses) and launch it in the air.