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<  Performance issues  ~  Big bore questions

pedro750
Posted: Mon Jan 16, 2006 10:23 pm Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
Hi at everybody!
I'm working on a 750 and I received a bigbore kit (cilynder and pistons 66.5mm) from HAINDST. I've never seen this pistons, anyone konw it?
Please help, probably I need new rings and I don't know wher I can find them.

Best regards at all
Pedro
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Satanic Mechanic
Posted: Tue Jan 17, 2006 7:15 pm Reply with quote
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Joined: 04 Sep 2005 Posts: 309 Location: Munich, Germany
Hi Pedro,

welcome to the forum! If I'm not completely wrong, these are Henry Abe pistons. I do have a spec sheet for those somewhere, just give me a few days and I'll dig it up for you.

P.S. Like your signature! Cool
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pedro750
Posted: Tue Jan 17, 2006 10:57 pm Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
Thank you very much!!!
If you whant tomorrow I can do some pictures of the kit, so you can see what is it.

About you, do you think that this year are you coming at our Italian meeting?

Best regards
pedro
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pedro750
Posted: Wed Jan 18, 2006 10:19 am Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
Here you are kit's pictures:







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pedro750
Posted: Thu Jan 19, 2006 7:59 am Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
Errata corrige, piston's bore is 67mm.
I checked and honda cbr600 (F and RR) yamaha R6 suzuki 600 have this bore. Do you think that I can use ring set of some of this bike?
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Satanic Mechanic
Posted: Thu Jan 19, 2006 7:48 pm Reply with quote
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Oh yes, I recognize these pistons - these are Henry Abe's. They are cast, a bit heavy, but otherwise ok, they have been widely used in the '70s and '80s. The valve pockets are not too deep - depending on your cam, you will probably have to make them a bit deeper. I will dig out the spec sheet I have from Henry Abe and post it here.

As to the rings, you will have to check if they have the same height than the original ones. Maybe you are lucky...

I will really try to make it to the Honda4Fest this year! Last year I have been on my way to Ceriglio, but soon after Munich, my front tire died and I had to hobble back, unfortunately.
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Satanic Mechanic
Posted: Thu Jan 19, 2006 7:56 pm Reply with quote
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Argh - I only have the spec sheet as .pdf file, which I cannot post here (reminds me that I wanted to upgrade the forum to allow for attachments Rolling Eyes ).

I'll email them to you instead Wink
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pedro750
Posted: Fri Jan 20, 2006 9:01 am Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
Satanic Mechanic wrote:
Oh yes, I recognize these pistons - these are Henry Abe's. They are cast, a bit heavy, but otherwise ok, they have been widely used in the '70s and '80s. The valve pockets are not too deep - depending on your cam, you will probably have to make them a bit deeper. I will dig out the spec sheet I have from Henry Abe and post it here.


Perfect, you are great!

Satanic Mechanic wrote:
As to the rings, you will have to check if they have the same height than the original ones. Maybe you are lucky...


Now I start the rings search and I'll post the results. I hope to be lucky me too Wink


Satanic Mechanic wrote:
I will really try to make it to the Honda4Fest this year! Last year I have been on my way to Ceriglio, but soon after Munich, my front tire died and I had to hobble back, unfortunately.


YOU HAVE TO DO Honda4Fest this year!!! I'm so sorry for the last year, I hope that this year your front tire will be good. So if you whant-can you can come one or two day on Iseo lake, so, on friday morning we will start all together (there will be here some my four German friends) and go to Cereglio.
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Satanic Mechanic
Posted: Mon Jan 23, 2006 2:38 pm Reply with quote
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Quote:
YOU HAVE TO DO Honda4Fest this year!!! I'm so sorry for the last year, I hope that this year your front tire will be good. So if you whant-can you can come one or two day on Iseo lake, so, on friday morning we will start all together (there will be here some my four German friends) and go to Cereglio.
That's an excellent idea! Is there a date yet for Honda4Fest 2006?
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pedro750
Posted: Mon Jan 23, 2006 9:44 pm Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
I'll post it as soon as possible!
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pedro750
Posted: Thu Jan 26, 2006 9:51 pm Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
Satanic Mechanic wrote:
Is there a date yet for Honda4Fest 2006?


Here you are: 19-21/05/06.
Other thing, I cheked 67mm rings and there's the Honda cb360 twin with this size. Do you konw where I can find this parts?
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Satanic Mechanic
Posted: Fri Jan 27, 2006 7:07 pm Reply with quote
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Perfect date!

as for the piston rings, I would first try the usual suspects, like www.davidsilverspares.co.uk and www.cmsnl.com
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pedro750
Posted: Tue Jan 31, 2006 1:49 pm Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
No news about rings... Crying or Very sad Crying or Very sad Crying or Very sad
I don't know where I can find them.
Honda cb360 twin's parts are imppossible to find, probably Kawasaki z1 900 (oversize +1mm) are good, but the bigest problem is to find datas about them ( I need to know the Thickness.
Mai piston Thickness are:
first ring: 1.5mm
second ring: 1.5mm
Third (oil): 2.8mm
So if you have some idea or you knoe some solutions...
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pedro750
Posted: Thu Feb 02, 2006 2:23 pm Reply with quote
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Joined: 16 Jan 2006 Posts: 48 Location: Italy
I'VE FOUND THEM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
So, Axl, look at this link: www.gandini.it
Very good.
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Ron
Posted: Thu Feb 02, 2006 8:10 pm Reply with quote
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Joined: 15 Sep 2005 Posts: 30 Location: Indianapolis
pedro750 wrote:
I'VE FOUND THEM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
So, Axl, look at this link: www.gandini.it
Very good.


That's some good browsing! I looked around stateside but found nothing in the short time I spent. Congrats! It always feels good to find parts, almost as good as riding.
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