Author Topic: 750 F muffler project  (Read 1887 times)

0 Members and 1 Guest are viewing this topic.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
750 F muffler project
« on: November 13, 2009, 03:12:00 PM »
 Are there many of us that could use a 750F muffler? I have 3 honda stock F headers all in good to like new condition but not 1 muffler. I plan to make one for my bike if it works out maybe more. Anyone else have an F exhaust but need a silencer? I'm thinking stainless steel.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline CB750F2

  • Hot Shot
  • ***
  • Posts: 645
  • Pat's first Honda 750 F2
Re: 750 F muffler project
« Reply #1 on: November 14, 2009, 04:10:28 AM »
I have two 78 F2 bikes. The header and muffler on both bikes are OEM and I also have one spare OEM header. The complete system on one bike has seen better days so I am on the lockout for a good used system. I like the original because it is quiet but at the same time feels/sounds powerful. I am mildly interested in what you are wanting to do but because of the distance between our two countries I don't think it would be viable for me - freight woul be the killer. I guess I am  really replying to get your post bumped to the front. Good luck, I will keep watching. pat
Regards
Pat from Australia

Offline BeSeeingYou

  • Old Timer
  • ******
  • Posts: 3,913
Re: 750 F muffler project
« Reply #2 on: November 14, 2009, 11:07:56 AM »
I would be interested to see what you come up with.  My stock muffler is in fine shape but unless I find a decent spare it would be nice to take it off and put it one the shelf to preserve it for later.

Offline KRONUS0100

  • MAD MATT THE MANIAC
  • Expert
  • ****
  • Posts: 1,216
Re: 750 F muffler project
« Reply #3 on: November 15, 2009, 08:12:28 AM »
my 76 cb750f runs a 28 inch long by 2 1/2 inch diameter thrush glasspack...slid right on factory f header.
MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
Re: 750 F muffler project
« Reply #4 on: November 15, 2009, 10:37:03 AM »
So far I have the 3 1/2" slash cut stainless pipe on and it really looks good. The stainless hanger is made, it needs tigged on. I'm going to hang it from the rear peg bracket instead of the stock bracket. I have found a temporary baffle and am looking at some options for more permanant ones. It sounds awesome without the baffle but too loud for any long distance riding. I need to do some carb work dang it, off to the shop. D.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
Re: 750 F muffler project
« Reply #5 on: November 15, 2009, 07:03:30 PM »
The carbs are OK now, I hope. The bracket is welded on and the muffler is mounted. I will try to post a pic monday. I should have a test baffle next week.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

cycleman

  • Guest
Re: 750 F muffler project
« Reply #6 on: November 17, 2009, 05:58:00 AM »
Looking forward to seeing pictures.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
Re: 750 F muffler project
« Reply #7 on: November 17, 2009, 09:14:16 AM »
The carbs got me behind, They are better but not quite right yet. I did get in a test ride between rain showers. The temporary glue can baffle works but does not sound very good. I am going to order a baffle for a sidemount car header. The question is what is the best connection at the collector, for now I removed the stock gasket and just slipped it on. I may be able to expand the end, split it and use the factory gasket and clamp.  Not everyone has these stock parts though.  Now where did I leave that camera?
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
Re: 750 F muffler project
« Reply #8 on: November 17, 2009, 10:08:01 AM »
            this is with the bracket welded the joint slipped over and the temp. baffle.

The pipe looks gold in the picture, it must be the flash.
« Last Edit: November 17, 2009, 10:09:44 AM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

76supersport750F

  • Guest
Re: 750 F muffler project
« Reply #9 on: November 17, 2009, 11:05:31 AM »
Hello

My 76 750F muffler has holes in the bottom.

I seen that there were Suppertrap slipons 21/2 dia mufflers with disc to add.

The cost is around 300 but I am not sure on what they would sound like or run like.

I like the stock it fits the bike and sounds quiet and good.

Let me know what you come up with.



Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
Re: 750 F muffler project
« Reply #10 on: November 17, 2009, 11:21:49 AM »
 Thanks, that reminds me, I need an 1/8" drain hole in case rain water gets in or vapor condenses in the pipe. I am shopping for a better price on materials but so far I haven't improved on this one. It should be a good deal less than that price.
« Last Edit: November 17, 2009, 11:25:10 AM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
  • *******
  • Posts: 14,935
  • Bought her new 4/75
Re: 750 F muffler project
« Reply #11 on: November 17, 2009, 09:35:38 PM »
Don,

If you're doing stainless a drain hole may not be necessary. Wouldn't be a bad idea however. My 91 Acura Legend still has the original complete stainless exhaust.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,223
  • Saver of unloved motorcycles.
Re: 750 F muffler project
« Reply #12 on: November 17, 2009, 10:13:09 PM »
I was thinking of protecting the head pipes and baffles with the drain. Just finiky sometimes. The baffles may be here by the end of the week.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.