Got pipes?

89Martinique wrote: Where did the exhaust manifolds come from?? and are they just for looks or was there performance gain??

I'm not the most qualified person to answer but those are Hi-Teks. They are (or were) made in Australia. A few years ago, several guys on here (TRBenj, Boat Dr and JoeinNY and possibly some others) ordered some. They supposedly help performance through better flow. They are pricey. The price is mentioned in some old threads, but I dont have time to look right now. I am thinking $1200 to 1600 a set, but I could be way off. There was some story that they farmed out the manufacture to China or something like that, that may have compromised the quality, but I dont recaall that story exactly, but there hasnt been as much interest lately.

Where did the exhaust manifolds come from?? and are they just for looks or was there performance gain??

I'm late to the party.. First time looking at this thread. What an incredible job, I am very impressed! Looks like this project was alot of work. Those custom SS exhaust pipes are so awesome! Thanks for sharing.

Do you have any pictures handy of what you did with the tiller arm / steering setup? I'd love to see the mods you made to fit the 2nd hose through.

If it's too loud you're too old!

Tim Benjamin turns 30 and next thing you know he is putting mufflers on all his boats.. blasphemous! Who would have thunk it.

Heck, I didnt put mufflers back on my boat till I was 35..

Maybe I am just not seeing something here? Where and what mufflers are you using? No performance data with just the H-pipe only?

those clamps sure look nice!

Ive heard great things about those T-bolt clamps... but theyre tremendously expensive! I will have a total of 36 clamps in my exhaust... a standard set up would be a little more reasonable (~16).

The invertaflows and hull huggers are both pretty quiet... going from memory, I couldnt speak to the audible differences.

I expect to notice a big difference once I get behind the boat- people from shore said they noticed a huge difference. The loudness never bothered me from the driver's seat.

Bringing this thread back to life...

After several years of threatening to do it, Ive finally taken the next step on this project. As Raindog would say, I neutered my boat. That is to say, I added some mufflers. The original intent of this modification was to enhance performance and improve the looks... the added noise was a byproduct, though not necessarily an unwelcome one. While fun for a time, I decided that since this is my dedicated ski boat, it should be a little more civilized. From now on, the BFN will not have to suffice when I get the urge to hear some straight pipes.

While I had the floor up, I decided to try adding an H-pipe as well, to see what the effects would be. Im happy to report that the mufflers did a great job of knocking back the sound by a considerable amount- not quite to original invertaflow levels of quiet, but distinctive bark is much reduced... and I can actually hear the slight whine of the transmission again. The H-pipe seems to have offset any performance loss that the mufflers brought to the table, as I picked up about a needle's width of rpms at WOT (maybe 20rpm?).

Please excuse the dirty bilge and lack of double clamping... more are on order.

boat dr wrote: Eric, is that a capital "v" like Vice Grips.Don't punch my buttons Eric,or the newest post on this site will be: And Now The Rest Of The Story.....

Your killing me Doc this is better than a soap !!! hahahah

So has anyone actually removed the invertaflo and built a 2 into 1 straight thru exhaust? I read some earlier ideas in this older thread and wondered if its been done. I am really wanting to ditch the invertaflo- Just not sure I want to fab and create a true dual like trbenj did. I LOVE his setup but would really like to avoid cutting another exhaust opening and modding the steering system. Ideas? Pics? Items needed? Shouldn't be too hard right?

Matt was correct- CC went to all composite in '93.



To make the Y-pipe that I linked to work, reducers will need to be added at the inputs. I '92 and later boats got the 3.5" risers, all earlier boats got 3" (like my '90). All single outlets were 4".

tapenick wrote: Off topic - but when did CC stop using wood stringers? On topic - didn't see any of the pre-built products on that site that looked like they would work.   Did I miss it?

I have heard that 1993+ boats do not have wooden stringers.

Awesome...you just made my day!

Now I can look at boats with non-wood stringers!

wakeboardin2k4 wrote: It would sound like the exhaust in your signature p71. Its just a smallblock with stock mufflers, that did very little for reducing the sound. The 2to1 mufflers make those boats silent IMO and rob them of the great sound that these motors naturally make. I however am more partial to Big Block sound...see signature I bet tims sounds great with all that stainless steel in there.

In other words...remove the 2-1 muffler and that wonderful V8 sound will appear?