how hot is this should it be. because when i put me hand near the exhaust it hurts my hand its so hot is this right

 

Rotary exhaust temps around 1400 degrees, so if you get your hand near the exhaust, yes, it's going to hurt.

 

ok just did not know and why do thay get so hot v8 ant like that are thay

 

the reason it gets so hot is is a v4-6-8 ect. has alternating pumps of exhaust through the headers while a rotary exhaust pumps out 3 pumps into the same pipe=VERY VERY HOT!

 

One time after a day of city driving in about 30 degree weather (celcius) i started to smell gas, i didnt really think much of it, luckily i was just about to get gas so when i went to open the cap, i felt preassure like when you open a pop bottle, so i slowly twisted it a bit and about 12 seconds of steam came out because my exhaust had heated up the gas in the tank. any longer something would of blew, so yes from that experience alone i think the exhaust can get
pretty damn hot, especially on a hot day.

 

ok thank for all the help and info

 

your ehxuast didnt heat up your gas that much geez, theres heat sheilds and **** and its not THAT hot at the mufflers,

what happens is gas expands and contracts normally, and your cap probably isnt designed to vent pressure, so it just builds up.. ive had the pressure in the tank on several cars...

for example you fill your take at night its cold, during the day time the gas expands, if your cap doesnt vent pressure, it just stays in there, the the pressure vents whe nu open it a week later.

 

yea, my whole exhaust gets pretty damn hot, a while ago i had shorts on and was getting something out of the back and my foot slid off the curb and my leg touched the exhaust tip, left a very nice circular burn on my leg, left a cool scar too, lol.

 

do are cars come with vented gas caps

 

Actually the pressure is vented into the charcoal canister. On newer vehicles when they are not under load, the ecu will purge the vapor into the intake. Its called an Evaporative emissions system or EVAP. Im not sure if its the same with our cars cuz Ive never had to mess with it. But we dont have vented caps, that was in the old days im pretty sure.

 

ok cool

 

i think my 87 wagoneer has one

 

hot enough to make some smores on a cold winter night

 

i have lit several ciggeretts off my turbo

 

i think there's something wrong with mine my tips never get hot enough to burn me

 

noor does mine. even with my rb headers and bonez hf cat, but maby cause i have crome tips on a stock back half.