Author Topic: Exhaust Photo Reference Library. (Read 77505 times)

nvr2old · « **Reply #75 on:** May 03, 2012, 11:42:19 AM »

Quote from: SOHC Digger on May 02, 2012, 02:51:59 PM

I don't know who made these 2 into 1's, but if anybody has some insight, I'd be interested.

Those look like a set of Trabacas (sp?) I had a friend at the Honda dealership I worked at back in the late 70's that had those on a 550. They sounded cool, but were awful as far as a performance pipe.

Gearheadgreg · « **Reply #76 on:** May 03, 2012, 03:17:37 PM »

77-78 750F 4-2-1 Stock header, with Dunstal look alike drilled muffler.

click for larger pic

CrankyOldGuy · « **Reply #77 on:** May 03, 2012, 03:53:36 PM »

I thought I already posted these. They are Hooker Headers 4-2. I traded them away for a center stand since I purchased a new set of HM300's from DSS.

Harry O.

Edit: These pipes show up on page 3 of the link in Hino's Post No. 83 below.

Hinomaru · « **Reply #78 on:** May 03, 2012, 05:55:19 PM »

Quote from: SOHC Digger on May 02, 2012, 02:51:59 PM

I don't know who made these 2 into 1's, but if anybody has some insight, I'd be interested.

SOHC Digger, those pipes sure do look like they were made by American Motorsports. The bends coming from the exhaust ports are unique and there’s probably not too many sets that have survived.

Here’s an ad taken from my Big Bike magazine dated July 1973:

(click on image for a larger view)

SOHC Digger · « **Reply #79 on:** May 03, 2012, 07:51:11 PM »

Sweet! Thanks!

Don R · « **Reply #80 on:** May 03, 2012, 08:21:42 PM »

I had a set of those on my 73 500. they do sound good.

754 · « **Reply #81 on:** May 03, 2012, 08:33:51 PM »

THAT IS THE AD in my mind that I was thinking of, good guess eh?

Stev-o · « **Reply #82 on:** May 03, 2012, 08:47:04 PM »

Hino - do you have any info on Action Fours? I post a pic tomorrow.

Hinomaru · « **Reply #83 on:** May 03, 2012, 08:58:45 PM »

Stev-o, post up a pic and I'll check for you.

In the meantime ... Have you seen this article:

http://www.hondachopper.com/garage/articles/header_guide/page1.html

Dimitri13 · « **Reply #84 on:** May 03, 2012, 10:09:22 PM »

Quote from: ACVWguy on May 02, 2012, 02:01:01 PM

Anyone know what these babies are?

I bought them NOS off ebay last summer for $175
I can't even describe the sound they make... eargasmic...

They are a 4-2 crossover design with an integrated fiberglass baffle. They are nice and rumbley at idle, sound almost like a subaru under load and you can hear them from a mile away. And they still don't hurt my ears.

Bumping for these...

Gearheadgreg · « **Reply #85 on:** May 04, 2012, 04:10:34 AM »

Quote from: Stev-o on May 03, 2012, 08:47:04 PM

Hino - do you have any info on Action Fours? I post a pic tomorrow.

Stev-o nice headers you have, i seen your avatar while back and was thinking you had the Action 4's....I had them om my K1 and they sounded real nice...i traded my buddy for a Kerker 4-1...looking to see some pic's those are very rare.

Gearheadgreg · « **Reply #86 on:** May 04, 2012, 04:16:02 AM »

Kerker 4-1.......Muffler?? i was 16! and lane splitting on the hwy in So Ca........still alive LOL!! 1975

Stev-o · « **Reply #87 on:** May 04, 2012, 05:10:17 PM »

These are Action Fours, name is on the muffler clamp. It combines cyl 1&4 and 2&3 and has slash cut mufflers.
I like the sound, fairly quiet under 4K RPM but sound great over that.
Hino - thanks for the the info.

Hinomaru · « **Reply #88 on:** May 04, 2012, 06:10:57 PM »

Stev-o, that’s a nice looking Action Four exhaust system you have.

Pictured below is what looks to be the same or similar system as yours. Since my Action Four catalog is undated, I would guess it dates from around the mid to later seventies. Having a price tag of $189.50 and showing 750 F model fitment provides a pretty good clue. The 4 into 2 (shown) is the only system offered in the catalog, as the rest are 4 into 1 headers.

(click on image for a larger view)

Don R · « **Reply #89 on:** May 04, 2012, 08:07:21 PM »

I thought this was a jardine, maybe not.

faux fiddy · « **Reply #90 on:** May 04, 2012, 10:31:12 PM »

Quote from: Hinomaru on November 03, 2011, 06:02:28 AM

Another pic of the CB750 RC Engineering header:

Inner cylinder paired with outer. +1

MCRider · « **Reply #91 on:** May 05, 2012, 08:02:34 AM »

Pairing the 1-4 and the 2-3, arranging them in firing order for a swirl, or making equal length headers were all tried. While the ideas may be elegant, in real life no advantage to any of these ideas was ever documented. No discernable increase in power over simply sticking the pipes in the collector as you come to them. The way the factory did it.

Don R · « **Reply #92 on:** January 02, 2013, 12:12:26 AM »

Quote from: Don R on May 04, 2012, 08:07:21 PM

I thought this was a jardine, maybe not.

Did anyone recognize these?

robnobrakes · « **Reply #93 on:** January 02, 2013, 12:23:59 AM »

The manufacturer of this exhaust remains a mystery, fitted to my recently aquired 1977 400F. Any ideas?

Bead blasted and powder coated, ready for refitting)

736cc · « **Reply #94 on:** January 02, 2013, 05:58:34 AM »

HAPPY NEW YEAR!
CB750 YOSHIMURA CAFE SOUND BITE

Harsh · « **Reply #95 on:** January 23, 2013, 02:44:42 PM »

I have searched through this thread a many others and haven't seen this what I have listed/shown anywhere. Each of the header pipes comes out of the collector and there is a removable baffle. I thought that they might be a set of Jardine's, but mine do not have the baffle that runs the full length of the megaphone. Does anyone have any ideas?

Dream750 · « **Reply #96 on:** January 24, 2013, 01:41:26 AM »

I would almost bet those are “Dick’s Cycle West” exhaust. If that’s the case, then those are quite rare as Dick’s was a short lived business who marketed his “Racer 1” line of café parts around 1973-74. The pipes in the ad look to be for a Kaw 900, but also has some features found in your Honda 750 exhaust. I would keep them until a 100% positive ID can be made.

Scott S · « **Reply #97 on:** January 31, 2013, 06:11:46 AM »

Strange exhaust on ebay. Maybe someone can snag the pics and post them here?

http://www.ebay.com/itm/HONDA-CB750-4-INTO-1-CAFE-RACER-DRAG-CUSTOM-EXHAUST-VINTAGE-RARE-CHOPPER-BOBBER-/261163186593?pt=Motorcycles_Parts_Accessories&hash=item3cce89f9a1&vxp=mtr

754 · « **Reply #98 on:** January 31, 2013, 07:12:19 AM »

Early Dunstall.

D-Rider · « **Reply #99 on:** January 31, 2013, 12:24:02 PM »

Quote from: robnobrakes on January 02, 2013, 12:23:59 AM

The manufacturer of this exhaust remains a mystery, fitted to my recently aquired 1977 400F. Any ideas?

Bead blasted and powder coated, ready for refitting)

Yoshimura - I have the same system on my 400/4 but in chrome .... well, chrome when I fitted it in the late 1970s - chrome and rust now ......

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Author Topic: Exhaust Photo Reference Library. (Read 77505 times)

Hinomaru

Hinomaru

Hinomaru