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Author Topic: 13 HP Predator 420cc on norwood  (Read 908 times)

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Offline tmrayner

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13 HP Predator 420cc on norwood
« on: August 23, 2021, 01:39:11 PM »
I replaced the original B&S 8hp with the HF 420cc engine.  The exhaust blows right on the upright.  Anyone else out there use this engine and replace the muffler?  It also limits my vertical travel.



 

 

Offline Crusarius

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Re: 13 HP Predator 420cc on norwood
« Reply #1 on: August 23, 2021, 02:25:54 PM »
This was my fix to bad exhaust routing. The way mine was the exhaust pointed directly in my face. I got the pipe from JCWhitney. Think it was $13. It slipped on right over the exhaust outlet then I just hose clamped the spark arrestor on the other end. Was surprising how much quieter it made the engine. I did add the mount tab to stop it from walking off.

Only answer I would have for lost height is to see what you can do to reconfigure the area it is interfering.



 

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Re: 13 HP Predator 420cc on norwood
« Reply #2 on: August 23, 2021, 02:27:40 PM »
oops. guess I should have taken a closer look at the pictures before responding.

Looks like you could add an extension off the head and move the exhaust out. Definitely need to have good bracing though.

Offline tmrayner

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Re: 13 HP Predator 420cc on norwood
« Reply #3 on: August 23, 2021, 03:27:30 PM »
Crusarius,

Where did that muffler come from?  Do you have a picture from the other side?

Offline Crusarius

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Re: 13 HP Predator 420cc on norwood
« Reply #4 on: August 23, 2021, 03:34:42 PM »
Stock muffler on the 670cc V-twin

I don;t think I have pics from the other side.

Offline mike_belben

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Re: 13 HP Predator 420cc on norwood
« Reply #5 on: August 23, 2021, 11:34:11 PM »
Make a deflector from some tin and sheetmetal screw it over the exh screen
Isaiah 63:10

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Re: 13 HP Predator 420cc on norwood
« Reply #6 on: August 24, 2021, 09:25:54 AM »
Make a deflector from some tin and sheetmetal screw it over the exh screen
That same honda  engine that motor is a copy of has a deflector shield screwed onto the muffler guard. It can be rotated in any direction. That 2$ honda deflector should bolt right up.
I am a true TREE HUGGER, if I didnt I would fall out!  chet the RETIRED arborist

Offline Slingshot

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Re: 13 HP Predator 420cc on norwood
« Reply #7 on: August 24, 2021, 08:52:28 PM »
  
    I put one of those engines on a Wood-Mizer LT-10 a few years ago and added some pipe fittings to give more clearance for head travel. I made a bracket to bolt onto the exhaust manifold and another to bolt onto the muffler with a hole to insert a pipe nipple and welded the nipple to the bracket. From there I could insert whatever pipe fittings I needed to position the muffler where I needed it to be.



 



 



 



 


Offline tmrayner

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Re: 13 HP Predator 420cc on norwood
« Reply #8 on: November 22, 2021, 09:27:02 PM »
Make a deflector from some tin and sheetmetal screw it over the exh screen
That same honda  engine that motor is a copy of has a deflector shield screwed onto the muffler guard. It can be rotated in any direction. That 2$ honda deflector should bolt right up.
The honda deflector was just the magic I was looking for.  The HF motor does not have the threaded holes so I had to weld it on.  Thanks for the great tip

Offline GARose

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Re: 13 HP Predator 420cc on norwood
« Reply #9 on: November 23, 2021, 07:13:23 PM »
This was my fix to bad exhaust routing. The way mine was the exhaust pointed directly in my face. I got the pipe from JCWhitney. Think it was $13. It slipped on right over the exhaust outlet then I just hose clamped the spark arrestor on the other end. Was surprising how much quieter it made the engine. I did add the mount tab to stop it from walking off.

Only answer I would have for lost height is to see what you can do to reconfigure the area it is interfering.


(Image hidden from quote, click to view.)

Bad exhaust routing you make it sound like predator did that on purpose maybe they should put a warning sticker on the engineif for sawmill use the exhaust is routed bad 

Offline Crusarius

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Re: 13 HP Predator 420cc on norwood
« Reply #10 on: November 23, 2021, 09:01:38 PM »
Wow, who are you and what did I do to you? Yes, I said bad exhaust routing. I never said it was the engines issues. Bad exhaust routing was the way I mounted the engine, I repeat "THE WAY I MOUNTED THE ENGINE"

So I don't know where you come from or who you are, but with only 4 posts I recommend shutting your mouth learning from some of the other great people on this forum and don't just come in and criticize unless you actually have some creative feedback.

Have a good day.


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