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K600 two into one exhaust

Old 09-02-2013, 02:51 PM
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The Ghost
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Default K600 two into one exhaust

Hi All,
Changed the exhaust over to a two into one. I made it up out of a couple of deep V headers into a 1" header and pipe.
First run with 2 into 1 exhaust. Forget to turn on the shaft oiler and then the flotation came loose, I adj the trim tabs after the last run as it was too flighty and went too far and now was pushing the bow. The engine was pulling just as hard with the single pipe as with then it had twin pipes. I am still tuning the engine getting 17800 out of it at the moment, once I get the hull trimmed out again I will start with the engine tune again.

Cheers
http://www.youtube.com/watch?v=_ZPRmSxcX8A
Old 09-04-2013, 12:06 AM
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rcguy1411
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Looked and sounded good
Old 09-08-2013, 09:04 AM
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qdemon
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I really like the concept of the 2 into one, but listening to the video I would estimate that to be well over 100db at 10Meters, unfortunately our noise regs over here in the UK do not permit anything over 80db at 10Mtrs to many lakes lost to loud pipes.
would have helped a lot with my recent k600 apache build.

Bob.
Old 09-12-2013, 07:22 PM
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hendocap
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Do you have some Pics of building the exhaust, I might try to do the same.
Old 09-12-2013, 07:39 PM
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Originally Posted by hendocap View Post
Do you have some Pics of building the exhaust, I might try to do the same.
These are the only photos I have when building the exhaust. If you are going to do one I would use leak-proof exhaust flanges as the ones I used began to leak after about 45 mins of run time. I am in the process of replacing the exhaust flanges but will require cutting of the header.

Cheers
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Old 09-12-2013, 08:38 PM
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Originally Posted by The Ghost View Post
These are the only photos I have when building the exhaust. If you are going to do one I would use leak-proof exhaust flanges as the ones I used began to leak after about 45 mins of run time. I am in the process of replacing the exhaust flanges but will require cutting of the header.

Cheers
Thanks for the heads up , I have a set of no-leak flanges on the motor right now but I had to grind them to get them to fit side by side. I was thinking of changing them to the ones you have but I will think about it more when I get closer to doing it. Mine will be going in a Cat so I will need drop it about an inch. Thinking about doing a few of them them all at the same time and selling them to help some people out. Thanks for the Pics , I seen them on Jim's boat dock but its down right now and was itchin to get started.
Old 09-12-2013, 08:40 PM
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hendocap
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Which pipe are you using ? also how about heat , has the header turn blue right away ?
Old 09-12-2013, 09:26 PM
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Originally Posted by hendocap View Post
Thanks for the heads up , I have a set of no-leak flanges on the motor right now but I had to grind them to get them to fit side by side. I was thinking of changing them to the ones you have but I will think about it more when I get closer to doing it. Mine will be going in a Cat so I will need drop it about an inch. Thinking about doing a few of them them all at the same time and selling them to help some people out. Thanks for the Pics , I seen them on Jim's boat dock but its down right now and was itchin to get started.
The problem with making the up is the outlet pipe angle, this is dependent on the angle of engine installation angle.

Cheers
Old 09-12-2013, 09:31 PM
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Originally Posted by hendocap View Post
Which pipe are you using ? also how about heat , has the header turn blue right away ?
The header has turned a straw colour, the inlet into the pipe has turned blue, and the outlet on the pipe has turned blue. It has a smaller outlet than most pipes. I am going to work on it, may just make up a short muffled pipe as I am not into racing. The pipe I am using at the moment is a CC Racing "Monster" 1" IS Steel Pipe.

Cheers
Old 09-13-2013, 01:40 PM
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I'm going to go 1" also and run my CC Power master . Its has an internal stinger so not sure how it gonna work, gonna get another pipe with external and see the difference
Old 09-13-2013, 05:12 PM
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And this will be available for sale when? LOL. looks awesome
Old 09-13-2013, 06:17 PM
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Originally Posted by ByronRC View Post
And this will be available for sale when? LOL. looks awesome
If all works as planned soon, I will start my own thread when that happens. Plan on making 2 different styles.
Old 10-03-2013, 05:31 PM
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Hi All,
After a mix-up at the post office, I got the exhaust flanges today. I had to machine 2.5mm of one end of both flanges to fit the twin, also had to reposition the ign coil. Am of to Wagga for the week end to see my daughter, so no more until next week.

Cheers
Old 10-05-2013, 08:58 AM
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I am very proud that my concept is being tested now on the other side of the Pond. Thanx a lot for believing.........

Just one info: I think that a single pipe is too small. I'd recommend a bigger pipe plus water injection to keep the temps down. Look for a pipe for a 35cc engine..... on Jim's I have described everything.
Old 10-07-2013, 12:39 PM
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Originally Posted by The Ghost View Post
If you are going to do one I would use leak-proof exhaust flanges
as the ones I used began to leak after about 45 mins of run time.
I am in the process of replacing the exhaust flanges but will require cutting of the header.

Hello 'Ghost' (could not find your real name)

There's no need to cut your manifolds to dis-assemble the flanges. (to weld other type flanges on)

Find some-one that can mill -0,3mm the inside faces of those four-bolt 'wet'-flanges ,
so the o-rings will have a tighter fit ... that's alll .. been there .. done that.
Old 10-07-2013, 05:20 PM
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Hi All,
Got the header fixed, now to think about the pipe, will have to work on it.

Cheers
Old 10-26-2013, 02:26 AM
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Very cool setup indeed. I would be curious to see if using a pipe for a 50cc make any difference in performance. It sure sounded nice and smooth. It looked in the video like you drove the boat up to yourself while standing in the water with bare feet. That's scary stuff, especially with a twin.
Old 10-26-2013, 08:19 AM
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"We" have made a similar set-up for Martin Eastwood (Waveridermoulding) ,
and test it with a normal 26cc mufflered exhaust (as can be found on eBay).
As these 'clones' are already my design , re-design for higher volume is not so hard to do.

As normal forum-behaviour is "only talking about" ... this will be a real life try and error attempt.

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Old 11-14-2013, 09:58 PM
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Hi All,
Got an exhaust from a 47cc pocket bike. only cost $17, will use the pipe part(11" long, 2.5" dia) that has a larger volume than our normal pipes. Just have to make up the inlet and outlet parts. My TIG died so will have to go back to the mig or oxy gear.

Cheers
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Old 11-14-2013, 11:55 PM
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You should speak to Hendrick about pipes and what can be done to change the volume.The one were using (his design used by the Chinese) he thinks can be changed internally to have larger volume.Once this one has been tested which wont be for a while we will see if that's needed ,the guys not looking for optimum performance but well see.Intention was for me to use this header but a customer bent my arm for his twin Apache I just built for him.Hes actually using the s520 not the k600 but heres the setup sat in his new hull I built in carbon Kevlar,ive also shortened the pipe to remove the straight piece near the cooling part as per Hendricks recommendations,well see how it works lol.
Mart
cant load pics will try again later
Old 11-18-2013, 04:32 AM
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Heres a few pics of his setup and of it sat in the boat,once its all fitted and ready for testing ill get him to send me some more pics and let you know how it performs but remember hes using the s520 not the k600 i just used the k600 to give an idea of how it fits in the boat.In the third pic you can see how much material was removed from the pipe near the cooling part,basiclly the 1 1/2" straight part was cut off and the cooling part tig welded back on by a friend who did a great job.Customer is also considering making his own on board electric start system for this build.
Mart
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Last edited by martno1fan; 11-19-2013 at 07:36 AM.
Old 11-19-2013, 07:20 AM
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Thought you might like this also,heres his s520 with his home made onboard elec strarter setup.Ill post some details later but all parts were made on his lathe.
Mart
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Last edited by martno1fan; 11-19-2013 at 07:37 AM.

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