running motor w/ no exhaust

[JPStrniste]

Is this bad for the motor to run with no back pressure?

I wanted to finish installing the cooling system on the car and want to get the car to running temp so I can bleed the system, but nervous about running with just open headers.

anyone?

- Jason

[Mike B.]

Go ahead a run it.

[e30s52]

just dont run it to long or you will warp the exhaust flanges

[WillisE30]

just dont run it to long or you will warp the exhaust flanges

That would take quite a while.

[Teaguer]

Running with only headers or manifolds is perfectly fine .

Running without the above and just an open head is where you run the risk of burning valves .

[BigD]

Running without the above and just an open head is where you run the risk of burning valves .

How come? Don't most aircraft, esp the WWII V12s, basically run open head exhaust?

[Speedjunkiejp]

ummm they are built for that though.. thats like saying its ok to run 40psi on the motor too because dragsters do it..

to OP... its fine to run it with open headers but might be annoying as it will be loud inside the cab as well.. but a quick run to the muffler shop is the same thing im gonna do.

[erik325i]

I ran with no exhaust off an open head once and didn't have any problems. Of course, I only drove it about 5 miles to pick my brother up from school. It was loud as fuck!

*edit* didn't realize this was in the 24v forum. I did it in my m20

-Erik

[BDSax]

i drove my car with open header for about 100 miles till i finally got exhaust. its just really loud and anoying. get funny looks from people on the road

[e30s52]

im i was saying if you do that for a long time it will. i dont know how far you plan to run like that. personaly i wouldnt do it just cuz the cops around here are a bunch of assholes

[JPStrniste]

I just wanted to be able to drive it on and off the trailer. I'm not going to go running down the street with it.


cops here suck.

[golde30]

my plan is to run open headers for about 50miles to the exhaust shop i want to use. imma be sweating the cops the whole way there...

[1990m3]

my plan is to run open headers for about 50miles to the exhaust shop i want to use. imma be sweating the cops the whole way there...

just call AAA if you have it. If you plan on shifting above 1500RPM it's going to be brutal. Bring earplugs, the headphone type that covers your whole ear. You'll need them!

[etxxz]

^^ &

my plan is to run open headers for about 50miles to the exhaust shop i want to use. imma be sweating the cops the whole way there...

that's what i did ex i had to drivelike 28miles. it'll only be loud when you give it gas...1500rpm or 4000rpm lol you'll see. what are you exhaust plans?

[ZiMMie]

open headers ftw.

http://www.youtube.com/v/VYrySmd2Dzc