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Trouble Getting Temperature over 200 Deg with Offset Smoker

 
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smokerries



Joined: 17 Jun 2013
Posts: 4

PostPosted: Jun 18 2013    Post subject: Trouble Getting Temperature over 200 Deg with Offset Smoker Reply with quote

I just bought an Oklahoma Joes Loghorn Smoker from Lowe's and am having trouble getting my temps up to even 200 deg. I have done some of the mod's such as the convection plate, exhaust duct elbow, installed two temp gauges at the cooking grate level. I have had to open the intake air damper door to get more air and helps a little. What would be some causes of not being able to get my temp up? I have been using hardwood lump charcoal such as from Big Green Egg. Is it an air flow issue? Could the convection plate thickness be a cause of stealing too much heat? I know this isn't a higher end smoker but my old really cheap Charbroil offset smoker had no problem getting to 300 deg if I wanted to and I could control it at 225-250 all day. Any suggestions? Help?
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k.a.m.
BBQ Mega Star


Joined: 12 Dec 2007
Posts: 26019
Location: Southeast Texas.

PostPosted: Jun 18 2013    Post subject: Reply with quote

Welcome to the ring smokerries, looking forward to seeing some pics of your cooks. Smile
Is the convection plate a Horizon?
Does your cooking chamber door leak?
If the chamber door seals good then take the exhaust elbow off and use it for something else because it is not needed. Then fire the cooker off and see if it will breathe.
Not knowing what type plate you have makes it hard to comment on it.
I hope this helps. Very Happy
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ICDEDTURKES
BBQ Fan


Joined: 23 Jun 2011
Posts: 123

PostPosted: Jun 18 2013    Post subject: Reply with quote

1. Feed it wood
2. When I used charcoal in my char griller offset I cheated to get it to temp especially in our cold spring and fall.. I used a small desk fan blowing in the intake to get the temp up quickly.
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Ntrouble



Joined: 27 May 2013
Posts: 8

PostPosted: Jun 18 2013    Post subject: Reply with quote

I am betting your doors leak a lot more than you think they do. Go buy some black RVT silicon caulk at the auto parts store. Put caulk around the flange and put car wax on the opposing steel. Be sure to leave the wax on thick, that will keep from caulking the doors shut. I saw a 100 degree improvement when I did this.
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smokerries



Joined: 17 Jun 2013
Posts: 4

PostPosted: Jun 18 2013    Post subject: Reply with quote

I know my doors leak especially the firebox top lid. Will the black RTV handle the firebox temps? I looked at the pit calculators and it seems my Chimney needs to be extended another 8 inches and my firebox air intake is too small. I figured this just by looking at it and I have been running with the intake door open to get more air. I was curious about the opening from the firebox to the cook chamber. It seems high to me. It was actually slightly above the cooking grate. This was another reason I put in the convection plate. I built the convection plate myself following the look of the Horizon plate.

P.S. I'm a newbie to this forum. How can I include images in my post?
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k.a.m.
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Joined: 12 Dec 2007
Posts: 26019
Location: Southeast Texas.

PostPosted: Jun 19 2013    Post subject: Reply with quote

smokerries, here is a link to how I fixed my son-in-laws OK Joe.
The RTV is not a good choice for the firebox.
http://www.thesmokering.com/forum/viewtopic.php?t=31210
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necron 99
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Joined: 04 Aug 2007
Posts: 2594
Location: San Antonio, TX

PostPosted: Jun 19 2013    Post subject: Reply with quote

I recommend a 1" to 2" gap between the diffuser / convection plate and the firebox opening, based on me using a Horizon convection plate in my 16" Brinkmann Stillwater offset.
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smokerries



Joined: 17 Jun 2013
Posts: 4

PostPosted: Jun 19 2013    Post subject: Reply with quote

k.a.m. It seems they make the firebox different than they used to. As in two pieces with a much smaller air intake. Looks like I need to do some major rework. It's a shame to have to do this on a new smoker. Here are some pics of the smoker and mods. Any suggestions appreciated.

[img]http://farm8.static.flickr.com/7326/9079268643_fece0ea729_s.jpg


[img]http://farm8.static.flickr.com/7423/9079238199_5484bedb1f_s.jpg

[img]http://farm4.static.flickr.com/3733/9081456586_ae842027c1_s.jpg

[img]http://farm6.static.flickr.com/5539/9081451028_bacd3a942d_s.jpg

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smokerries



Joined: 17 Jun 2013
Posts: 4

PostPosted: Jun 19 2013    Post subject: Reply with quote

Still trying to get my pics posted....Trying again.

http://www.flickr.com/photos/creativei/9079268643/in/set-72157634206135400

http://www.flickr.com/photos/creativei/9079238199/in/set-72157634206135400/

http://www.flickr.com/photos/creativei/9081456586/in/set-72157634206135400/

http://www.flickr.com/photos/creativei/9079231893/in/set-72157634206135400/

http://www.flickr.com/photos/creativei/9081452354/in/set-72157634206135400/

http://www.flickr.com/photos/creativei/9081452354/in/set-72157634206135400/
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