Question about 1985 Yamaha XJ 700 X Maxim

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I have a 1985 maxim. Is it safe to remove mufflers and ride it straight piped?

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Hi, Frddesil1 you will not hurt the engine but it may idle and run poorly because of no back pressure from the mufflers also solicit the attention of your local law enforcement, for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Yamaha XJ700N Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals
Maximum Maxim Resource for 1985 86 Yamaha 700 750 Maxim Models XJ700X and...
Tips Tricks

Posted on Jun 30, 2016

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$33.12 plus shipping. Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx I checked and Babbits has them in stock.
A “very helpful” rating for this answer? Thanks!

Posted on Jun 18, 2009

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SOURCE: I am having problems with my 1985 Maxim X 700 Idling.

you have a fuel delivery problem check idle screw adjustment air/fuel screw and idle and transfer ports

Posted on Aug 22, 2009

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SOURCE: why does the muffler make a popping sound it ...

This is what's called an oxymoron. Because with straight pipes there is no muffler! Haha. Sorta like Jumbo Shrimp.
But the cause of your popping sound is because of afterburn in the exhaust system. With no back pressure because of the straight pipes, some of your engines' combustion is happening in the exhaust. That is a super way to burn a valve BTW.

Posted on May 26, 2010

  • 1 Answer

SOURCE: How do you remove the seat from a 1985 Yamaha

I have a maxim x 750. If it's similar, then look for a seat lock on the right side (facing forwards). I thought it was the helmet lock but that is on the left side of the bike. Once you unlock the seat lock the seat pops right off.

Posted on May 31, 2011

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Exhaust question 93 silverado 5.7l 350. Singlr pipe Think its 3 inch pipe. There is no cat. On it and the muffler is cracked down the middle. Should i put a new muffler/glasspack in for performance reasons...


If you have no catalytic converter and replace the muffler with a straight pipe,, you WILL NOT BE ABLE TO HEAR YOURSELF THINK!!.. I took the converter off mine and it was SOOO loud.(have a Flowmaster dual outlet).. It WAS TOO LOUD.. I put a 28" "glasspack" inline..WHEW.. I can actually hear the radio now!!!

Flowmaster Mufflers

Jun 28, 2017 | Cars & Trucks

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DIY Replace Back Muffler / Resonator with Straight PipeSubject: DIY Replace Back...


DIY Replace Back Muffler / Resonator with Straight PipeSubject: DIY Replace Back Muffler / Resonator with Straight Pipe
Title: Increase Fuel MPG by Replacing Back Muffler

Overview:
When your back muffler fails, and or if you want a bit more gas milage, replacing the back muffler with a straight pipe seems to work fine and increase MPG. This is much cheaper than purchasing a back muffler with DIY or to have a local customer shop install a straight pipe.

Symptoms:
Back muffler failing, onion peeling and / or holes in the back muffler.

Experience Level:
Medium

Tools Needed:
Hack Saw, Ratchets, Wrenches, etc.

Time Needed:
About 1 hour:

Parts Needed:
Pipe parts from local auto store. Exhaust sealers, hangers, pipe tip (stainless)

Procedure:
Remove the back muffler by cutting the pipe before the muffler about 2 inches in front of the muffler. Replace with straight pipe components or have a shop do it. You will need some time to get it 100% right. It took me a couple of tries.

Outcome:
- Money savings in replacement.
- Slightly louder, but not much. Actually a better sound (subjective)
- 1-5 MPG gas savings, especially on open road.

Discussion:
I have done this on a 99 9-5 I4 for about 1 year now and it seems to be working fine. I am getting about 3+ MPG on the open road since this was done. It is an automatic with 140k miles solid 29-30 MPG with regular fuel on the open road. I really do not see the need for the back muffler / resonator at the present time.

I will be doing this on a 2001 V6 wagon soon. The muffler will be failing soon.

on Jan 17, 2010 | Saab 9 5 Cars & Trucks

1 Answer

Hi I have bought a 1985 700 maxim watercooled it has been sitting for appr 2 years today I took carbs out, disassembled them, cleaned them w carb cleaner and put them back in in addition to that I...


If I understand "the petcock was in prime position and it eventually quit dripping."
Prime = on
Sound like the needle rubber was hard and after a while they soften up enough to cut off the fuel.
Keep an eye on it and ride safe.
Ken

Feb 02, 2011 | 1985 Yamaha XJ 700 X Maxim

1 Answer

I want more sound from my pipes (australian specs).. how do i knock the restrictions out of the mufflers?


If you remove the baffles from your exhaust pipes the ignition timing and tuning will need attention or it will run rough.
I find it best to buy Screaming Eagle pipes or Slash Cut pipes, they have the correct resistance for backpressure but are very loud!!!!
If you wish to remove the baffles, the procedure will depend on the design of the pipes. There is usually a "pop" rivet somewhere underneath them that if you drill it out the baffles will pull out.
In the UK they fail their roadworthyness test if they have no baffles.
Loud pipes save lives, ride safe!

Nov 28, 2010 | 2000 Harley Davidson FLSTC Heritage...

1 Answer

Oil capacity?


Should be 3.5 Liters / quarts with the filter change. Put in 3 liters then top up as needed to get the level to the top of the viewing window.

To check your oil, bike should be level, on it's center stand, engine should NOT be running!

Any oil viscosity between 10w30 and 20w50 will work just fine. Smaller numbers if the weather's cooler and/or you only do short rides. Bigger numbers for hot weather and longer rides.

May 28, 2010 | 1985 Yamaha XJ 700 X Maxim

1 Answer

Yamaha wiring


Check on ebay for a shop manual or Clymer manual. owners manual won't do any good. You can usually find one ranging from 3 to 35 dollars. Also check http://www.xjbikes.com/Forums.html. It is an excellent forum for free information on anything you want to know about your XJ.

Ride Safely, Ed

Apr 07, 2010 | 1985 Yamaha XJ 700 X Maxim

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