Author Topic: going from 4 into 2 exhaust to 4 into 1  (Read 597 times)

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Offline JDrider

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going from 4 into 2 exhaust to 4 into 1
« on: January 30, 2023, 10:52:06 AM »
I have pretty old, beat up 4 into 2 exhaust on my stock 1975 CB550k1.
I was looking to buy the Delkevic 4into1 exhaust.
I have stock air box.
Is there any reason I shouldn't do this?
I cant really afford the 4 into 4.
Will I need to make any changes, or regret this decision?
Thanks,
JD
1975 CB550K1

Offline rocket johnny

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #1 on: January 30, 2023, 11:20:55 AM »
i'd say go for it !    you may have to re jet for the new exhaust

Offline Shtonecb500

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #2 on: January 30, 2023, 01:03:01 PM »
do it.
73/74'' CB500/550 resto-mod - sold
75' 750f 91' cbr f2 swap cafe - mock up
74' 750 chopper hardtail - complete - sold
74' CB750/836kit - Black mix & match - daily rider - always tweaking
71' cb500 K0 survivor - complete
71' K1 - CANDY GOLD/BROWN Winton kit - in process

Offline beemerbum

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #3 on: January 30, 2023, 01:33:38 PM »
+1 on the Delkevic. The entire system weighed less than just one of the nasty rusted out stock exhausts on my 750. Without any changes in jetting, the bike runs great. You will not regret

Offline JDrider

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #4 on: January 30, 2023, 01:40:16 PM »
Thanks everyone!
JD
1975 CB550K1

Offline cb550papi

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #5 on: January 30, 2023, 04:06:29 PM »
I bought just the Delkevic header and I run a 18" quiet core muffler I got from Lossa Engineering (looks exactly like the a Cone Engineering).  Could not be more happy with that decision, sounds amazing and obviously saves a TON of weight.  I just don't really care for the look of the delkevic mufflers.  Whole setup was under $400
1976 CB550k
1972 CL350

Online RAFster122s

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #6 on: January 30, 2023, 08:53:48 PM »
Consider the
Hindle from Ripple Rock Racers, many consider it a better 4 into 1 system than the Delkevic.
David- back in the desert SW!

Offline JDrider

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #7 on: January 31, 2023, 03:42:01 AM »
Consider the
Hindle from Ripple Rock Racers, many consider it a better 4 into 1 system than the Delkevic.

You can’t use the center stand and it’s twice as much.
JD
1975 CB550K1

Offline MauiK3

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #8 on: January 31, 2023, 06:49:42 AM »
If I were to ever switch from no number 4-4 I think the Delkevik would be it, looks clean.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Stev-o

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #9 on: January 31, 2023, 01:14:52 PM »
+1 on the Delkevic.

+1 on Delkevic...I have their 3 into 3 on my '74 Kawasaki H2 750...



https://delkevic.com/full-chrome-exhaust-system-to-fit-h2-b-c-1974-1975/
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline 70CB750

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #10 on: January 31, 2023, 03:33:36 PM »
Another one for Delkevic.  I have 4 - 1 on the CB900, love it. 
Prokop
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Offline Mark K

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Re: going from 4 into 2 exhaust to 4 into 1
« Reply #11 on: February 01, 2023, 07:57:28 PM »
I bought the Delkevic 4 into 1, it's next on my list to install on my '73 750.

Dino put one on his 750

Current bikes
'73 Honda CB750K3 (current project), '19 Kawasaki KLX 140G, '72 Honda CL70K3, '70 Honda SL350 (next project)

Former bikes
'74 Yamaha 60, '72 Maico 250, '74 Kawasaki 250 S1, '82 Kawasaki KZ550, '84 Honda VF700F Interceptor, '99 HD FLSTS Heritage Springer, '97 HD FLHTCUI Ultra Classic '05 HD FLHT Electraglide, '9? Buell Lightning, '03 FLHTCUI Ultra Classic,'14 Honda CRF250L