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Author Topic: Will CB650Z exhaust fit CB650SC?  (Read 1579 times)

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lewiszman

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Will CB650Z exhaust fit CB650SC?
« on: October 17, 2013, 11:27:35 AM »
Good morning everyone,

I have been considering purchasing a Bassani exhaust system from one of the other members on this forum.

The exhaust was purchased for the CB650Z. I have a 79 CB650 chassy with an 82 CB650SC engine. I'm not too worried about the chassy as I can make that work if need be - but my question is - Will an exhaust from a CB650Z fit the head of an 82 CB650SC?

Thanks,
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Offline Bankerdanny

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #1 on: October 17, 2013, 11:39:40 AM »
Did the port spacing on the SOHC 650's change over time? If its a SOHC4 650 exhaust it should fit the engine fine. Whether it fits on the frame is a different question.
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Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

lewiszman

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #2 on: October 17, 2013, 11:43:16 AM »
Quote from: Bankerdanny on October 17, 2013, 11:39:40 AM
Did the port spacing on the SOHC 650's change over time? If its a SOHC4 650 exhaust it should fit the engine fine. Whether it fits on the frame is a different question.

Hi Bankerdanny,

That's a good question. I was hoping someone could shed some light on that question too...
I've read about differences between cb550 cb650 and cb750 but not much material or info on differences between cb650z and cb650sc models specifically
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Offline Bankerdanny

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #3 on: October 17, 2013, 12:14:08 PM »
What year was the exhaust for? I know you say the Z, which is not a model sold in the US, but it appears that model was sold at the same time as the versions sold in the US. I would bet (but can't say for sure) that all SOHC4 650 engines have the same basic head.
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"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

lewiszman

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #4 on: October 17, 2013, 12:23:33 PM »
Quote from: Bankerdanny on October 17, 2013, 12:14:08 PM
What year was the exhaust for? I know you say the Z, which is not a model sold in the US, but it appears that model was sold at the same time as the versions sold in the US. I would bet (but can't say for sure) that all SOHC4 650 engines have the same basic head.

According the this page here: http://www.myhonda650.com/cb650history.htm
A CB650Z was manufactured between Jan 79 and Dec 79. It also mentions briefly there MIGHT be changes among the 650 heads.

The exhaust I'm looking at is listed as 79-82 but doesnt specify whether it is for the standard or custom models
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Offline Bankerdanny

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #5 on: October 17, 2013, 12:46:50 PM »
Based on the article it seems like the changes might have been on the intake side only to accommodate the change in carb styles.

Not a lot of 650 owners around, so you may not get the info you need and the only option might be to take a flyer on the exhaust and see how it works.
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"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline trueblue

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #6 on: October 18, 2013, 04:39:49 AM »
The port spacing on the exhaust side is the same on the Z as the SC.  The intake changed.  The exhaust off the Z will fit the chassis of the SC. You need to modify the brackets at the rear a little.  The exhaust off the SC won't fit the Z the side stand fouls on the LH pipe.  I have both in my shed and had a weekend a while ago where I had nothing better to do than see if I could fit the 4-4 onto the Z ;D.
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1979 CB650Z
Nothing can be idiot proofed, the world keeps producing better idiots.
Electronic Guages for your SOHC 4

lewiszman

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #7 on: October 18, 2013, 08:21:44 AM »
Quote from: trueblue on October 18, 2013, 04:39:49 AM
The port spacing on the exhaust side is the same on the Z as the SC.  The intake changed.  The exhaust off the Z will fit the chassis of the SC. You need to modify the brackets at the rear a little.  The exhaust off the SC won't fit the Z the side stand fouls on the LH pipe.  I have both in my shed and had a weekend a while ago where I had nothing better to do than see if I could fit the 4-4 onto the Z ;D.

Just what I was looking for! Thank you very much! A+! Gold star! See me after class! ;P
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Offline trueblue

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #8 on: October 19, 2013, 02:46:41 AM »
Quote from: lewiszman on October 18, 2013, 08:21:44 AM
Quote from: trueblue on October 18, 2013, 04:39:49 AM
The port spacing on the exhaust side is the same on the Z as the SC.  The intake changed.  The exhaust off the Z will fit the chassis of the SC. You need to modify the brackets at the rear a little.  The exhaust off the SC won't fit the Z the side stand fouls on the LH pipe.  I have both in my shed and had a weekend a while ago where I had nothing better to do than see if I could fit the 4-4 onto the Z ;D.

Just what I was looking for! Thank you very much! A+! Gold star! See me after class! ;P

Do I get a cookie? ;D
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1979 CB650Z
Nothing can be idiot proofed, the world keeps producing better idiots.
Electronic Guages for your SOHC 4

lewiszman

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Re: Will CB650Z exhaust fit CB650SC?
« Reply #9 on: November 01, 2013, 03:34:09 PM »
Thought I'd report back my findings. I purchased the exhaust and it fits the bike fine. The only issue (a minor one) is that the headers rub on the oil filter housing as I have an oil cooler installed on mine. The oil cooler plate protrudes the housing out about an inch. The bottom of the outside fins are what's rubbing so I think I'm going to grind away a little bit of material to prevent further contact.

Here is a picture, and it is a Bassani race exhaust...

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