Author Topic: 1972 K2 Honda CB750 Engine Guards. Hardware and Install  (Read 1693 times)

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Honda3

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1972 K2 Honda CB750 Engine Guards. Hardware and Install
« on: July 04, 2019, 04:21:22 PM »
I have the attached bars and will have them chromed. Do these bolt right on, or do i need more hardware?

As mentioned in the title, these are for a 1972 Honda CB750 K2. Im not ordering from Dave Silvers, I have no patience for an international order other than the tank and panel set thats on the way from Yamiya:



« Last Edit: July 16, 2019, 12:54:27 PM by Honda3 »

Offline BenelliSEI

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #1 on: July 04, 2019, 06:06:13 PM »
You will likely find you need longer hardware. As an alternative to chrome, my son had a rough old set sand blasted and powder coated. They turned out very nicely!

Offline Don R

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #2 on: July 04, 2019, 07:39:14 PM »
 It's likely chrome will cost what a new set goes for. And new has the longer bolts with it.
No matter how many times you paint over a shadow, it's still there.
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Offline Airborne 82nd

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #3 on: July 04, 2019, 07:51:12 PM »
It's likely chrome will cost what a new set goes for. And new has the longer bolts with it.
Yep what what he said  ;)

Honda3

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #4 on: July 05, 2019, 04:03:44 AM »
It's likely chrome will cost what a new set goes for. And new has the longer bolts with it.


Thanks for this!

Where can I get a new set? Ive looked everywhere!!

Offline the-chauffeur

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #5 on: July 05, 2019, 07:58:24 AM »

Engine bars at David Silvers.

Offline HondaMan

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #6 on: July 05, 2019, 07:27:10 PM »
Those are the same kind I have on my 750K2. The long bolt thru the engine is OK. The other 2 bolts are up to their last thread with the bars in place.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Offline disco

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #7 on: July 07, 2019, 12:21:25 AM »
Hi Benelli, that is a very nice looking K2!

I think the blacked out crash bars look better than chrome! The wheels look awesome as well!
1976 CB750 K6 Sapphire Blue
1972 CB750 K2 836 Orange Sunrise
1972 CB750 K2 Candy Red
1972 CB750 K2 Candy Gold'

Honda3

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Re: 1972 K2 Honda CB750 Engine Guard Installation
« Reply #8 on: July 16, 2019, 12:53:00 PM »
Those are the same kind I have on my 750K2. The long bolt thru the engine is OK. The other 2 bolts are up to their last thread with the bars in place.

is there anywhere locally I can find the bolts / hardware? This is the one im going to chrome. A poster here said tarazzo (or whatever you call them) engine guards are no good.



« Last Edit: July 16, 2019, 01:00:07 PM by Honda3 »

Offline Scott S

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #9 on: July 16, 2019, 01:40:41 PM »
 Just measure the existing bolts and the thickness of the flange on the  brackets.  Get bolts that much longer. Use grade 8 bolts.
 Any decent hardware store, Lowe's,  Home Depot,  etc, should have them. Probably no more than $12-15, if that much. Use the existing nuts/lock washers or new nylock nuts.

 You should be able to remove one by and take it to the store with you to check thread pitch, length, etc.
 Don't be surprised if there are two different lengths for upper and lower mounts.
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Honda3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #10 on: July 16, 2019, 01:50:33 PM »
Just measure the existing bolts and the thickness of the flange on the  brackets.  Get bolts that much longer. Use grade 8 bolts.
 Any decent hardware store, Lowe's,  Home Depot,  etc, should have them. Probably no more than $12-15, if that much. Use the existing nuts/lock washers or new nylock nuts.

 You should be able to remove one by and take it to the store with you to check thread pitch, length, etc.
 Don't be surprised if there are two different lengths for upper and lower mounts.

Thanks for this!

Offline MauiK3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #11 on: July 16, 2019, 03:34:05 PM »
Yamiya also sells a very nice set.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Honda3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #12 on: July 16, 2019, 04:02:54 PM »
Yamiya also sells a very nice set.

Im just going to chrome the ones I have. The single bar. I like the look of it. I have a similar set on my KZ650 seen below.

Just need to figure out how much longer that long engine bolt needs to be.


Offline Doobie

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You only go around once in life so it might as well be on a motorcycle.

CB550K4
CB750K2
CB750K2
CB750K6
CB750K6
CB750K7
CB750F3
CB900F2

Honda3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #14 on: July 16, 2019, 04:25:50 PM »
The Yamiya hanger bolt is 34 cm.
http://www.yamiya750.com/index.php?main_page=product_info&cPath=145&products_id=580&language=en
The other bolt is 10 x 85 mm
http://www.yamiya750.com/index.php?main_page=product_info&cPath=145&products_id=579&language=en

Thanks. I will try to find one locally. Im sure Home Depot must have one. Dont i need more bolt thread info?

I took a look at their engine guards. No way Im paying $240 for them. Just going to have mine re-chromed.

Offline Doobie

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #15 on: July 16, 2019, 05:16:46 PM »

Thanks. I will try to find one locally. Im sure Home Depot must have one. Dont i need more bolt thread info?
[/quote]

Doubtful that you'll find either bolt at HD, especially a 10 mm x 320 mm bolt. You could have a steel rod cut to length and thread the ends.
You only go around once in life so it might as well be on a motorcycle.

CB550K4
CB750K2
CB750K2
CB750K6
CB750K6
CB750K7
CB750F3
CB900F2

Honda3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #16 on: July 16, 2019, 05:38:35 PM »

Thanks. I will try to find one locally. Im sure Home Depot must have one. Dont i need more bolt thread info?

Doubtful that you'll find either bolt at HD, especially a 10 mm x 320 mm bolt. You could have a steel rod cut to length and thread the ends.
[/quote]

Funny you should mention: with five bikes and numerous opportunities for headaches, Im not putting engine guards on at all. Its too much hassle for me and I just spent a lot of money on my 1982 CB900F and my KZ650, not to mention nearly $1,500 on the Yamiya tank and side covers and emblems, fuel caps, etc.

So no more engine guards, though I sure someone will stumble across this thread and find the info useful.

Offline Scott S

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #17 on: July 16, 2019, 06:01:57 PM »

Thanks. I will try to find one locally. Im sure Home Depot must have one. Dont i need more bolt thread info?

Doubtful that you'll find either bolt at HD, especially a 10 mm x 320 mm bolt. You could have a steel rod cut to length and thread the ends.
[/quote]

 The 550's use the shorter individual bolts to mount the crash bars, that's why I suggested a hardware store.
 I wasn't aware the 750 used a 12.6" long bolt as one of the hangers.
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Honda3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #18 on: July 17, 2019, 02:46:48 AM »

Thanks. I will try to find one locally. Im sure Home Depot must have one. Dont i need more bolt thread info?

Doubtful that you'll find either bolt at HD, especially a 10 mm x 320 mm bolt. You could have a steel rod cut to length and thread the ends.

 The 550's use the shorter individual bolts to mount the crash bars, that's why I suggested a hardware store.
 I wasn't aware the 750 used a 12.6" long bolt as one of the hangers.
[/quote]

Im not putting engine guards on at all. Its too much hassle for me and I just spent a lot of money on my 1982 CB900F and my KZ650, not to mention nearly $1,500 on the Yamiya tank and side covers and emblems, fuel caps, etc.

So no more engine guards, though I sure someone will stumble across this thread and find the info useful.

Offline Doobie

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #19 on: July 17, 2019, 03:10:06 AM »
Quote

So no more engine guards, though I sure someone will stumble across this thread and find the info useful.

This topic has been discussed several times here. Search is your friend.
« Last Edit: July 17, 2019, 07:37:32 AM by Doobie »
You only go around once in life so it might as well be on a motorcycle.

CB550K4
CB750K2
CB750K2
CB750K6
CB750K6
CB750K7
CB750F3
CB900F2

Honda3

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #20 on: July 17, 2019, 03:14:24 AM »
[

So no more engine guards, though I sure someone will stumble across this thread and find the info useful.
[/quote]

This topic has been discussed several times here. Search is your friend.
[/quote]

Thanks!! Im going to keep the bike clean with no guards. I think it looks better and like i said, im not going to search around for bolts. Im pleased in my decision. Thanks for your help.

Offline pjlogue

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Re: 1972 K2 Honda CB750 Engine Guards. Hardware and Install
« Reply #21 on: July 18, 2019, 01:56:38 AM »
The Yamiya hanger bolt is 34 cm.
http://www.yamiya750.com/index.php?main_page=product_info&cPath=145&products_id=580&language=en
The other bolt is 10 x 85 mm
http://www.yamiya750.com/index.php?main_page=product_info&cPath=145&products_id=579&language=en

Thanks. I will try to find one locally. Im sure Home Depot must have one. Dont i need more bolt thread info?

I took a look at their engine guards. No way Im paying $240 for them. Just going to have mine re-chromed.

You may be shocked, depending on where you live, at the price to re-chrome.  It isn't cheap.  The overhead for plating shops is very high now and that gets passed onto the customer.

-P.