WWRC conveting a WWRC 20cc profile muffler to fit a DLE30

WWRC conveting a WWRC 20cc profile muffler to fit a DLE30

PostPosted: Wed Jan 23, 2013 1:08 pm

Customers have told me that the have done it before.

Here is a tutorial on just how easy it is.

First, stock DLE 30 muffler and WWRC 20cc profile muffler.

DLE 30;
Weight 2.0 oz
Down tube ID .71875 (18.22mm)
Down Tube length 1.5 inches
Chamber size best estimate based on outside dimensions
4.97 cu/in

WWRC 20cc Profile style muffler;
Weight 2.1 oz
Down tube ID .8125 (20.64mm)
Down Tube length 2.75 inches
Chamber size best estimate based on outside dimensions
6.96 cu/in

On the chamber size I took my best measure and subtracted 2.4mm from each end to account for wall thickness. Actual chamber size will be slightly smaller due to the internal bolt guides but both look equal so whatever they are would be nearly equally deducted with the WW muffler having bolt guides about a 1/4 inch longer internally.

So it is my opinion that the WWRC 20cc profile muffler is not smaller than the DLE 30 but actually slightly larger.

Now on to the modification.
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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Wed Jan 23, 2013 1:10 pm

So now, I did not have a DLE 30 handy but do have a muffler for one. The technique can be used and port checked against the actual cylinder head for a perfect match.

I got a piece of thick paper, this one being card stock that I had laying around and ran a Popsicle stick over it to outline the port opening on the DLE 30 muffler along with the bolt holes while holding the cardboard steady...

Once I can see the outline of the bolt holes and the port opening I take the card stock paper off of the muffler, lay it flat and cut out the bolt holes with an xacto knife. Once cleanly cut, put it back on the DLE 30 muffler and verify that they are good to go.

I had a couple of bolts laying around that fit slipped them in to hold the template in place and then took my xacto and trimmed the template to perfectly match the DL30 muffler. When done, I could now transfer it over to the WW20 profile muffler and see where I need to do the light work with the dremel.

On the 20cc muffler I had to elongate the bolt holes about 1mm each as the 30cc bolt pattern is wider by that much. Also the exhaust port on the 30cc is about 1mm wider in length (close to to the bolt holes) so I lightly trimmed that area and put a slight bevel on it so the exhaust would flow. This trimming is near the bolt guides but did not touch them.

Verify with the template, take a little at a time being sure not to let the cutting drill bit out of the hole or it will walk against the face of the muffler mount... dont want that.

Thats it, ready to mount...
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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Wed Jan 23, 2013 1:27 pm

BTW the WWRC 20cc muffler can be found here

http://wrongwayshopping.com/

I have also added a 20cc standard inverted muffler for those who need this orientation.
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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Fri Oct 28, 2016 10:09 am

That link no longer works:
http://www.wrongwayrc.com/index.php?rou ... uct_id=139

I was going to use the VVRC 20cc profile muffler on my OMP fusion 30ccc conversion project but WWRC model looks bigger and more suited for the 30. Has anyone had experience with doing this?
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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Fri Oct 28, 2016 7:44 pm

The WWRC muffler is the ticket for the 20cc motors and I bet will work well on the 30cc. The outlet tube of the WWRC muffler is bigger than others and therefore in my own opinion helps the power!
Anyone got any Cardens for sale???? I need another one!

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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Fri Oct 28, 2016 10:02 pm

I bought a WWRC profile muffler a few years ago for a 30cc engine. Richard mentioned I would probably have to enlarge the inlet to match the engine exhaust. He was right. Funny thing though, the profile muffler had a larger inlet than the muffler that came with the engine. I also had to hog out the holes a bit to fit the wider spacing of the 30cc engine mounting bolt holes. The muffler modifications were not difficult at all.

I currently have the muffler on an OS-22. It's a little louder and has a bit more power than with the standard muffler that comes with the OS.
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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Fri Oct 28, 2016 10:08 pm

OS22 and a WWRC muffler is a BA combo!
Anyone got any Cardens for sale???? I need another one!

Crappy Cut Kits your #1 source for kits cut crappily

B&E Graphix-> www.BandEGraphix.com
Planewrappers-> www.planewrappers.com
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Re: WWRC conveting a WWRC 20cc profile muffler to fit a DLE3

PostPosted: Sat Oct 29, 2016 7:25 am

cool I have other WWRC items to order anyway. The DLE this is going on had the piston installed backwards from the factory. No wonder the owner said it never ran good! I have to break out the porting tools to repair the cylinder so opening up the muffler is NBD.
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