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Author Topic: Hepolite pistons in a CB72  (Read 4250 times)

Online Bryanj

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Re: Hepolite pistons in a CB72
« Reply #15 on: January 27, 2018, 01:08:23 AM »
Ash, used to have a glaze buster very like the "Flap Wheels" you can buy, works fine
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Offline AshimotoK0

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Re: Hepolite pistons in a CB72
« Reply #16 on: January 27, 2018, 12:48:00 PM »
I am thinking it may be best to get a rebore done and new +0.25 or +0.5 pistons. If there hadn't been a bit of a ridge that would have swayed me against reboring  but from what I have leaned on here 2 thou clearance between piston and bore is excessive on a Honda engine. At least I can fit Honda pistons now if I can find them.
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“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Orcade-Ian

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Re: Hepolite pistons in a CB72
« Reply #17 on: January 27, 2018, 05:03:56 PM »
Ash,
This is the glazebuster I use and I can lend it to you if you decided to go with the new std pistons you already have - other than a few gaskets and some time, what is there to lose?

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Ian
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Offline Tomb

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Re: Hepolite pistons in a CB72
« Reply #18 on: January 27, 2018, 05:23:57 PM »
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Tom
'73 CB550 with CB500 engine café racer
'62 CB77 Sprinter
'70 CD175
'78 CB550 with sidecar
'80 Z50R
And a load of old Yamaha 1100's

Offline AshimotoK0

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Re: Hepolite pistons in a CB72
« Reply #19 on: January 27, 2018, 07:44:01 PM »
Cheers Ian .. I have one of those already but it's at work somewhere ... seemed very fierce last time I tried it though ...I think it's a Kennedy one.  A very kind soul has offered me NOS +0.25 pistons and rings, so still undecided.
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“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Orcade-Ian

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Re: Hepolite pistons in a CB72
« Reply #20 on: January 27, 2018, 07:48:01 PM »
That’s Ok Ash,
Glad you now have more choices!

Ian
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Offline Tomb

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Re: Hepolite pistons in a CB72
« Reply #21 on: January 28, 2018, 11:26:34 AM »
Quote from: AshimotoK0 on January 27, 2018, 07:44:01 PM
seemed very fierce last time I tried it though

Best used in a battery drill at very slow speed with paraffin or WD40, and moved in and out lots for the criss cross pattern. And as Orcadian Ian says, will take nothing off when measured unless used for a LOOOONG time.
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Tom
'73 CB550 with CB500 engine café racer
'62 CB77 Sprinter
'70 CD175
'78 CB550 with sidecar
'80 Z50R
And a load of old Yamaha 1100's

Offline Ashdowner

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Re: Hepolite pistons in a CB72
« Reply #22 on: February 09, 2018, 02:42:04 PM »
Hepolite used to make pistons and rimgs for just about every bike you can think of UK and Jap.
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CB550K3, CB550K1, Yamaha Midnight Star, and CA77 in 2473 pieces (at the last count)

Offline AshimotoK0

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Re: Hepolite pistons in a CB72
« Reply #23 on: February 09, 2018, 03:27:00 PM »
Decided to go for a rebore and some kind man on FB is giving me a set of NOS pistons & rings for free ..he has choice of +.25 or +.50

Thanks for all of the advice though..next up is finding out about the barrels I have for the Bomber and any slight rust I will tackle as you have all suggested. They have been srored without pistons so hopefully I will find a decent set among my bits. Already have a set of NOS std pistons and rings so..fingers crossed ...
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“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.
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