Author Topic: CB750 SOHC Gasket sets  (Read 268 times)

Offline martin_uk

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CB750 SOHC Gasket sets
« on: October 02, 2026, 10:43:08 AM »
I am helping a friend with his bike, which had oil burning and top end leaks.

As it has been a while since I rebuilt mine and suppliers change, it would be useful to get some current recommendations.

I see there are a number of suppliers of top end sets and am interested in member's experience.

Which is the most comprehensive set, to include cam carrier pucks, cylinder stud seal tubes, cylinder sleeve o rings, exhaust rings and valve seals?

Is it worth buying a genuine Honda head gasket seperately?

Advice and recommendations on value for money and quality appreciated.
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
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Offline Martin6

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Re: CB750 SOHC Gasket sets
« Reply #1 on: October 02, 2026, 05:07:22 PM »
2 years / 4,000 miles ago, I bought a full gasket set from David Silver. So far so good.

Offline Skoti

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Re: CB750 SOHC Gasket sets
« Reply #2 on: October 02, 2026, 05:50:03 PM »
Was lucky to get a genuine Honda top set from a dealer in Germany, but paid a painful 200 Euro.
That was 10 years/36,000 miles ago, Seems worth it now.

At that time all the genuine gaskets and O rings were available separately from DS/CMSNL but worked out more expensive.

I didn't fancy having to do the job twice and felt safer with genuine stuff.

Good luck
Skoti


Motorcycling is Life, anything B4 or after is just waiting...

1976 Honda CB750F1

Offline Spitfire

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Re: CB750 SOHC Gasket sets
« Reply #3 on: October 03, 2026, 09:31:43 AM »
I have always used genuine Honda head gaskets, I paid a hefty price for the CB750F2 head gasket that I bought but in the long run it is worth it.

Cheers

Dennis
1976 CB750F

1977 CB750F2 In bits

1964 BSA A65R In bits

Offline martin_uk

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Re: CB750 SOHC Gasket sets
« Reply #4 on: October 03, 2026, 12:05:03 PM »
Appreciate comments.

I see DS do 2 options on pattern gasket sets one at £55plus vat and another (Vesrah) at £95 plus vat.

Unfortunately, it is not clear what the full contents are. ???
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz

Offline Bryanj

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Re: CB750 SOHC Gasket sets
« Reply #5 on: October 03, 2026, 12:21:04 PM »
Way back when Vesrah was always the go to decent set

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: CB750 SOHC Gasket sets
« Reply #6 on: October 03, 2026, 01:19:52 PM »
We've used lots the Vesrah kits, always good quality and to be honest, £95.00 isn't that much really in the great scheme of things, I get less than ¾ of a tank of Diesel for that 🤣🤣🤣
LINK TO MY EBAY PAGE. As many of you know already, I give discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Bryanj

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Re: CB750 SOHC Gasket sets
« Reply #7 on: October 03, 2026, 03:17:05 PM »
Think about the trucks deliveringbthe bits, 450 litre tank average 8mpg so 3-400 litres a day

Offline martin_uk

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Re: CB750 SOHC Gasket sets
« Reply #8 on: October 04, 2026, 01:43:56 PM »
We've used lots the Vesrah kits, always good quality and to be honest, £95.00 isn't that much really in the great scheme of things, I get less than ¾ of a tank of Diesel for that 🤣🤣🤣

Thanks Julie and Bryan
Sounds like Vesrah is best bet.


Do you know whether they include pucks and valve seals?
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz

Offline martin_uk

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Re: CB750 SOHC Gasket sets
« Reply #9 on: October 04, 2026, 01:46:38 PM »
Think about the trucks deliveringbthe bits, 450 litre tank average 8mpg so 3-400 litres a day

Its over £2 per litre for diesel down my way and works out at £9+  per gallon   :o
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz

Offline martin_uk

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Re: CB750 SOHC Gasket sets
« Reply #10 on: October 04, 2026, 02:14:14 PM »
I did a bit more searching and found a US site listing contents of Vesrah VG-157  :)

Looks like excludes pucks

Includes:

12329-300-020 – Breather Cover Gasket – x1
12391-300-030 – Cylinder Head Cover Gasket – x1
91302-001-020 – O-Ring 30.8mm – x8
91305-323-000 – O-Ring 5.8 x 1.9mm – x4
91309-035-000 – O-Ring 11 x 2.5mm – x2
91304-286-000 – O-Ring 61.8 x 2mm – x4
91301-300-000 – O-Ring 6 x 2.3mm – x1
12251-300-070 – Cylinder Head Gasket – x1
12191-300-030 – Cylinder Base Gasket – x1
14592-300-000 – Cam Chain Tensioner Gasket – x1
18291-254-000 – Exhaust Pipe Gasket – x4
12115-300-000 – Cylinder Stud Gasket – x8
12209-300-003 – Valve Stem Seal – x8
30372-300-300 – Points Cover Gasket – x1
11396-300-303 – Clutch Cover Gasket – x1
11397-300-303 – Alternator Cover Gasket – x1
31282-300-020 – Starter Motor Cover Gasket – x1
11395-300-040 – Transmission Cover Gasket – x1
11398-300-303 – Oil Pan Gasket – x1
15135-300-010 – Oil Pump Gasket – x1
Fits Honda:

CB750A Hondamatic – 1976-1978
CB750F Super Sport – 1975-1978
CB750K – 1974-1978

https://www.motorcyclepartssupply.com/product/vesrah-complete-gasket-set-vg-157-honda-cb750-1974-1978/

https://www.motorcyclepartssupply.com/product/vesrah-complete-gasket-set-vg-157-honda-cb750-1974-1978/

Reduced to $31.99
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz

Offline martin_uk

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Re: CB750 SOHC Gasket sets
« Reply #11 on: October 04, 2026, 02:32:48 PM »

Here is info from Vesrah site

https://catalog.vesrah.co.jp/catalog/shape/VG-157.html

OP SET    LINE NO.    O.E.M NO.    NAME OF PARTS    Q'TY
●    1    12329-300-020    BREATHER COVER GASKET    1
●    2    12391-300-030    CYLINDER HEAD COVER GASKET    1
●    3    91302-001-020    O RING 30.8    8
●    4    91305-323-000    O RING 5.8 X 1.9    4
●    5    91303-035-000    RUBBER 16 MM    2
●    6    91304-286-000    O RING 61.8 X 2    4
●    7    91301-300-000    O RING 6 X 2.3    1
●    8    12251-300-070    CYLINDER HEAD GASKET    1
●    9    12191-300-030    CYLINDER BASE GASKET    1
●    10    14592-300-000    TENSIONER HOLDER GASKET    1
●    11    18291-254-000    EXHAUST PIPE GASKET    4
●    12    12115-300-000    CYLINDER STUD BOLT PACKING    8
●    13    12209-300-003    VALVE STEM SEAL    8
   14    30372-300-300    POINT COVER GASKET    1
   15    11396-300-303    CLUTCH COVER GASKET    1
   16    11397-300-303    DYNAMO COVER GASKET    1
   17    31282-300-020    STARTER MOTOR COVER GASKET    1
   18    11395-300-040    MISSION COVER GASKET    1
   19    11398-300-303    OIL PAN GASKET    1
   20    15135-300-010    OIL PUMP GASKET    
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz

Offline martin_uk

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Re: CB750 SOHC Gasket sets
« Reply #12 on: October 04, 2026, 04:19:44 PM »
There does seem to be a variety of options, some include the pucks.

From online searches I found various brands :-

Vesrah
Athena
Hendler
Vertex
Chinese brands
1977 CB750F1
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz

Offline McCabe-Thiele (Ted)

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Re: CB750 SOHC Gasket sets
« Reply #13 on: October 04, 2026, 04:38:24 PM »
I have found the Hendler products good quality for the price, including the gasket set for my CB400NA Superdream.

I've never used Vesrah, quite a few members here recommend them so they must be good quality.

Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Bryanj

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Re: CB750 SOHC Gasket sets
« Reply #14 on: October 04, 2026, 11:10:59 PM »
91318300013, expensive genuine but pattern available, i have no idea on quality as i rarely touch 750 and most 500 sets have them in