Jump to content

 

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Sign in to follow this  
Brodie

Really bad exhaust fumes from Stainless exhaust tips

Recommended Posts

Brodie

I have the STE's on my boat (not the turn downs) and when surfing, the exhaust fumes/smoke is really bad. It is the worst I have ever experienced behind any boat from any brand. I have never noticed it behind anyone elses boats with regular flappers. I am thinking about trying some 90 degree rubber plumbing elbows(similar effect to turn downs) to see if it will help. I will switch to turn downs if that is the answer, but doubt that little 45 degree turn would make that much difference. Anyone else experience this with STE's?

Edited by Brodie

Share this post


Link to post
Share on other sites
shawndoggy

fresh air exhaust is your answer.

Share this post


Link to post
Share on other sites
Brodie

I realize FAE is the obvious best answer, but wondering if turn downs would improve it to where it's not noticeable like on most other boats that I have surfed (or maybe even regular flappers). In 10 years of surfing, I have never had a problem behind any other boat except my current boat with STE's.

Edited by Brodie

Share this post


Link to post
Share on other sites
Ndawg12

Are you sure you're not running rich? Does your temp read a consistent 160?

Edited by Ndawg12

Share this post


Link to post
Share on other sites
3sport

What's the difference between silent tip exhaust (ste) and turn down tips? I thought they were two in the same??

Share this post


Link to post
Share on other sites
Brodie

What's the difference between silent tip exhaust (ste) and turn down tips? I thought they were two in the same??

Regular STE's are straight and turn downs have nearly 90 degree bend downward.

Share this post


Link to post
Share on other sites
3sport

Turn downs significantly quieter? Just curious. I have STE, but not sure they're the turn downs when I think about it. Build sheet just says STE.

Share this post


Link to post
Share on other sites
Jimmypooh

Turn downs are slightly quieter but nothing too impressive. Agreed with above about running rich. If you have a strong smell you are likely running rich and that is generally cause by high fuel pressure (clogged regulator). See this thread

Share this post


Link to post
Share on other sites
Brodie

It's not so much the smell, but the cloud of smoke/steam billowing out the back. It doesn't smell like its running rich. It acually looks worse than it smells. It seems more like steam.

Share this post


Link to post
Share on other sites
Ndawg12

Cooler air and water may be just making it more noticeable...?

Share this post


Link to post
Share on other sites
Brodie

Cooler air and water may be just making it more noticeable...?

Nope, happened all summer.

Share this post


Link to post
Share on other sites
FastFreddy

It's not so much the smell, but the cloud of smoke/steam billowing out the back. It doesn't smell like its running rich. It acually looks worse than it smells. It seems more like steam.

Are your manifolds really hot? You may not be getting enough water flow through your headers to cool the exhaust gases properly. They should be hot but you should be able to keep your hands on them.

Share this post


Link to post
Share on other sites
nyryan2001

FAE.

I oughta show you the difference...dont hestitate, totally worth it for sound reduction and ZERO exhaust. exhaust comes up 20ft behind the rider. When I surf, all I hear is waves crashing.

Share this post


Link to post
Share on other sites
Brodie

you can see it in this video:

http://www.youtube.com/watch?v=7axaMg5pSE8

I won't do this again with my kids until I fix the problem. It is not strong.

btw, the engine runs consistently at 160

Edited by Brodie

Share this post


Link to post
Share on other sites
wakesetter8796

That's just steam. Happens when it is humid.

Share this post


Link to post
Share on other sites
teamerickson

Great video BTW!

Share this post


Link to post
Share on other sites
MLA

You need some diagnostics. The exhaust tip is not causing the issue. A very odoriferous exhaust is a sign that the engine is not performing at its best. The deadly gas, Co, is colorless, oderless and tastless, so regardless, you'll never know till its too the point of feeling the side effects.

Share this post


Link to post
Share on other sites
Nitrousbird

I noticed a reduction in exhaust fumes going from flappers to the STE setup.

Share this post


Link to post
Share on other sites
SmoothWaterMan

All exhaust ports, tips or std ports (aside from FAE dispersing them in water) have no effect on the exhaust gases coming out of the engine. The difference in ports is purely sound. From Malibu - STE is the quietest, std flaps are the next, and the 90 degree turn downs actually increase the sound level at slow speeds.

Peter

Share this post


Link to post
Share on other sites
CrystalSurf

All exhaust ports, tips or std ports (aside from FAE dispersing them in water) have no effect on the exhaust gases coming out of the engine. The difference in ports is purely sound. From Malibu - STE is the quietest, std flaps are the next, and the 90 degree turn downs actually increase the sound level at slow speeds.

Peter

Peter - Can you clarify something please? What is the product in the following link...STE or 90 degree turn downs?

http://www.bakesonline.com/detail.aspx?ID=756

I always thought that STE and the turn downs were the same thing.

Thanks.

Share this post


Link to post
Share on other sites
Nitrousbird

Peter - Can you clarify something please? What is the product in the following link...STE or 90 degree turn downs?

http://www.bakesonline.com/detail.aspx?ID=756

I always thought that STE and the turn downs were the same thing.

Thanks.

That item linked is the STE.

Share this post


Link to post
Share on other sites
mainekneeboarder

All exhaust ports, tips or std ports (aside from FAE dispersing them in water) have no effect on the exhaust gases coming out of the engine. The difference in ports is purely sound. From Malibu - STE is the quietest, std flaps are the next, and the 90 degree turn downs actually increase the sound level at slow speeds.

Peter

This is what we have experienced with our "homemade" turn downs, it sounds like it actually is echoing off the water and platform making it sound louder, kinda like driving thru a tunnel.

We get the steam alot too fairly often, Manifolds are warm to the touch but you can hold your hand on them.

Share this post


Link to post
Share on other sites
Brodie

That item linked is the STE.

What's in the link is what I consider turn downs. Mine come straight out and don't turn down like the ones in the link. Here is a picture of mine.

post-4769-0-10558500-1380212200_thumb.jp

Edited by Brodie

Share this post


Link to post
Share on other sites
Nitrousbird

What's in the link is what I consider turn downs. Mine come straight out and don't turn down like the ones in the link. Here is a picture of mine.

You don't have STE's then - just chrome/stainless exhaust tips.

Here are my STE's installed:

photomay25161044.jpg

Share this post


Link to post
Share on other sites
Brodie

The baffle is the same, I just don't have the turn down part. I thought they were the early STE's.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...