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12-26-2008, 05:47 PM
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#1 |
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Gone Wild
Join Date: Jun 2008
Posts: 192
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Custom Header
hey guys i got a little welder for christmas and i really want to make a custom header for my 290 but my friend who i bough it from says it can wreck the engine running with no muffler beacuse of the needed backpressure
is this true |
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12-26-2008, 06:17 PM
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#2 |
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Gone Wild
 Join Date: Mar 2008
Location: Rockwall, Texas (Dallas / Ft. Worth)
Posts: 7,077
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Re: Custom Header
Do it if you want to change the "look". Not much (if any) performance gains will be reached. You will HAVE TO put some sort of muffler on it - no back pressure will hurt your motor AND you will have a loss of performance.
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12-26-2008, 06:40 PM
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#3 |
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Gone Wild
Join Date: Jun 2008
Posts: 192
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Re: Custom Header
so it might hurt my motor is what your saying
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12-27-2008, 12:05 AM
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#4 |
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Not Yet Wild
Join Date: Dec 2008
Location: Boynton Beach, Fl
Posts: 66
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Re: Custom Header
pretty much
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12-27-2008, 12:20 AM
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#5 |
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Gone Wild
Join Date: Mar 2008
Location: Rockwall, Texas (Dallas / Ft. Worth)
Posts: 7,077
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Re: Custom Header
I'm saying is that there is better use of your welding time. Exhaust systems are much more complicated than "Hey - Let's take off my stock muffler and make a new one." No offense, but a 9 hp motor is a 9 hp motor! Give it a try, take and post pictures, my bet is that when all said and done, you will
put the stocker back on? Search the site, I think this topic has been discussed a few times before. |
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12-27-2008, 09:27 AM
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#6 |
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Gone Wild
Join Date: Jun 2008
Posts: 192
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Re: Custom Header
yea i searched a bit last night and ive seen people run them with out mufflers just header too me they sound way better and add a few hp and i ran it with out the muffler this morning and it felt like it took off alot better but i do not want to do it it if am going to risk damage to my valves but i have seen people do it with vanguards
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12-27-2008, 11:05 AM
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#7 |
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just leave me alone
Join Date: Aug 2008
Location: Tennessee
Posts: 5,643
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Re: Custom Header
I think running it without the mufflier is sorta like running a Vehicle with low/high tire pressure,
You will feel the change immediatly with no obvious change in tire wear. BUT eventually your tires will show the change in ablormal wear, as will the engine. Just my thoughts :)) |
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12-27-2008, 11:35 AM
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#8 | |
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Gone Wild
Join Date: Mar 2008
Location: Rockwall, Texas (Dallas / Ft. Worth)
Posts: 7,077
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Re: Custom Header
Quote:
It's your cart. Sounds like you have already answered your own questions... |
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12-27-2008, 12:33 PM
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#9 |
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Gone Wild
Join Date: Jun 2008
Posts: 192
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Re: Custom Header
well if you guys are absoultely convinced maybe i should clean out my muffler
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12-28-2008, 08:07 PM
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#10 |
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Not Yet Wild
Join Date: Dec 2008
Posts: 6
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Re: Custom Header
cut both ends of stok muffler and drill two 3/4 inch holes all the way threw and weld back sounds like a harley
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