Jump to content
SAU Community

Recommended Posts

Hey everyone this is my first post on here so im sorry if i have repeated a post, i ran a search but could not find any relevant info. I have a 93 model GTs33 and after running for about 15 minutes at normal pace no excesive speeds etc. the exhaust is too hot to touch and can be heard cooling down from a fare distance away is this normal? Or could it be prehaps caused by un-burnt fuel in making its way to the exhaust. Any help would be greatly appreciated. The exhaust is 2 and a half inches. I am not sure of the brand but i can check tomorrow morning. Cheers.

Link to comment
https://www.sau.com.au/forums/topic/184462-high-exhaust-heat/
Share on other sites

to help us help you, we'll need a few answers to some questions.

the exhaust will always be hot, what do you mean by 'too hot to touch'? with your hand?

what do you mean by 'can be heard cooling down'? describe the sound.

is it a catback exhaust? full system exhaust? mild steel? titanium? stainless steel?

un-burnt fuel will give a rich, overfuelling exhaust smell.

eug

No matter what exhaust you have, what car you drive, unburnt fuel or not, if the car has been running for 15 minutes its going to be too hot too touch with your hand :)

Unburnt fuel should not really affect the heat of your exhaust. If you're running really rich, your car may backfire on full throttle or gearshifts and you will hear a POP sound. Also, the smell issue as Eug mentioned.

Also, why is this a concern for you? Unless the exhaust is making funny noises or glowing red I doubt its really an issue.

Edited by Yawn
why anyone would want to touch an exhaust after driving their car (hard or not) is beyond me.

some people 'love' their car way too much.

Reggie, if you're not already on the new sau-qld forums, do check it out. http://www.sauqld.com/ipb/index.php?

yeah trying to touch an exhaust that has had hot gas throuh it is rather silly.

unburnt fuel will actually cool the exhaust not heat it up. if it is unburnt then it means that it didn't reach a high enough temp to ignite so it will be cooler than the gas from the fuel that did ignite.

is the sound of it cooling down a ting ting noise? if it is, that is just the metal contracting as it cools. yuo will hear a tin roof on a house doing the same thing on a hot day. it is normal.

Its stainless steel full system. Why would i touch my exhaust? Because if i can hear it cooling down, (and yes it is a tinging noise) from inside my house and the car is about 20m away im curious to know how hot it is. and as none of my previous cars (VS commodore and subaru liberty) got this hot, i was wondering why a skyline should be so different.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I did a skidpan night at SMSP this week, it was much cheaper than $350. But yeah, you need to slap an LSD in that thing.  I put an OS Giken in the 370Z and it's f**king MARVELOUS even compared to Nissan's viscous LSD. So you're saying it's free now that it's a housing estate? 😂
    • Nah, the car seems to run exactly as it did prior, in saying this it does "seem" to be better down low, like more eager to rev, but that may be 100% placebo effect from intake noise But, I'm not worried about it at all, in the end it is a fairly low compression NA engine that has a well shrouded intake,  if it is getting hotter IAT I cannot notice anything negative performance wise from the seat of my pants thrashing it about on the street or sitting in traffic, so meh, car now now makes induction noise so I'm happy
    • Do you have an IAT sensor? It's worth checking it to see. You may be suprised how little gap you actually need to flood your engine with hot air. (I tape up my airbox for a reason) :p
    • @KinkstaahKrinkle paint the "silver" alloy, not the red filter frame Engine bay heat won't be a issue worth worrying about as the silver alloy blocks it off on 3 sides, as for the top, the bonnet seals most of it and the big OEM CAI intake snorkel is still fitted in its original position  I will head into Clark's Rubber when I have some time to grab some pinch weld to tidy up the alloy after I paint it As for performance, I honestly wasn't expecting any, the only reason I got it is because the intake noise sounds cool to my old ears when I'm feeding it the beans Sometimes it's the silly things you do in in life that gives the most fun, and I do love anything that makes cool car noises In other news: I survived 4 nights at sea with Jackie not throwing me over board, holidays are continuing now as we are currently chilling at the Beachcomber in Toukley, after taking the coast roads from Sydney in the MX5, top down all the way, Toukley is where I spent a good deal of my youth holidaying during the summer months, there's lots of reminiscing going on,  and lots of beaches and old houses to visit Next on the list is to head to Batemans Bay for a few days, but we will take the Commodore out to stretch its legs, then Commodore hasn't really moved for months
    • There’s probably people who’d like to do it and then when it comes to putting their hands in their pockets they’ll all disappear into the shadows 
×
×
  • Create New...