Dont ask why, just would it hurt anything to dump the exhaust right out of the ports with a heat shield to block the exhaust from going to the intake area? Just driving for a short distance, to get the car from one place to another? Yes I know it will be unbearably loud and heat the engine bay up like mad, I just need to know if it would damage anything for the short trip.

 

i did it. then i drove it around the yard it was fun i had no hood on it. then my header showed up the next day. Just make sure there is nothing that can get into the port.

jr

 

will it suck oxygen back in and burn the apex seals or anything like it can burn the valves on piston engines supposedly?

 

I drove with ONLY a manifold for over a month, with no trouble (aside of the sound).

I can't imagine, with that small of a manifold, that there will be any difference between with, or without a manifold.

 

lol, i intend to run no exhaust, pull off all removable body panels, and if its legal at the dragstrip, remove the windshield and all other windows, and just a couple dragstrip runs to see what it is capable of before I scrap the car for good She's seen better days.... much better days. But I wanna get in that nice stock port, NA, non-nitrus, zero performance part, 13 second run just to prove the naysayers wrong before I kill her, lol

 

i doubt u will get 13's on just weight reduction

-greg

 

You doubt me? Do you even know how crazy I am? lol Have you seen pictures of my car?

 

dude, im just saying, i think it will be hard to shave like 5 seconds off the car with only weight reduction, i dont think your state of mind has anything to do with it either,

good luck on it though

-greg

 

lol

 

Sooooooo why are you trashing it? Whats wrong with it?

 

Only thing that'll get dammaged is your eardrums

 

Well long story, suffice to say the parents dont want me driving it because its too unsafe in current condition, its got some pretty big rust holes, suspension issues, I need something with more than 15mpg, and it is not usable as a daily driver any more.

 

back to the original question of would it hurt anything? yea it would hurt a lot of things. no o2 senor to start with causes it to run rich. if the car is runing rich then the burn could last and be burning outside the block, the engine won't get clean air. rotary's already run a lot hotter than piston engines, i hate to thing of what you would melt by dumping that kinda heat into the engine bay. it's not a good idea, i'd put the maniflod on for the trip, doesn't matter if you dont' have a new gasket, it's not that far of a trip you said, jsut have it on the get the heat out the engine bay. the performance would also be hurt by that kinda heat built up in the engine bay.

 

get someone to record your run. i'll upload it to my site if i have to for u. i wanna see the drag run

gl

 

Sounds stupid to me. Drove around with only manifold a couple of times; was surprised nobody called the cops and my engine did not catch fire.

If you need an exhaust manifold they are a dime a dozen; don't ask me I threw my 2 spares in the garbage.

 

12A's don't have O2 sensors, they don't have any electronic control of fuel delivery anyway, so thats not an issue. The added heat in the engine bay is a potential problem. The idler arm will especially hate you, I wouldn't be suprised if you melt the idler arm bushings, makeing your steering go quickly to pot, and potentially causing your car to become unstable. Just stick the manifold on, it will send the heat under the car, and away from the intake.

 

12a's dont have an 02 sensor

mike

 

My idler arm hates me.

 

well he didn't exactly say what kinda engine. but it still is a bad idea.

 

thats exactly what i was thinking. i mean, if the thing backfired, i'd be afraid of something starting on fire under the hood. and as you may know, underhood fires usually arent good . that would be extreme temps right near rubber hoses and wires. my vote is dont do it.

 

carbs tend to leak gas somewhat.... rotaries like to belch flames.....

not a good combination.... at least put the manifold on...

 

what you do is take two 2" pipes and have them with a 90* bend and then point them over and down......


cause without anything there... well.... it just kills performance more than helping it..... atleast have some 2" pipes man.... open header.....


or just use the stock manifold till you get there, and then take it off to run it... be VERY careful though....... cause it prolly will start a fire...

 

don't tae the manifold off at all. the heated air that would go into the intake would hinder performance like non other.