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Author Topic: PISTONS (970cc? 1000cc?)  (Read 60866 times)

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Offline Big Jay

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PISTONS (970cc? 1000cc?)
« on: October 22, 2008, 08:40:15 PM »
Now that we have made the connecting rods the strongest part in the CB750 engine, it is time to talk pistons.

What are people interested in, 970 or 1000cc or both.

Give me some idea?

Jay
« Last Edit: October 30, 2008, 07:31:52 AM by SteveD CB500F »
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: PISTONS
« Reply #1 on: October 22, 2008, 08:52:05 PM »
Jay,

1000 just sounds better than 970 to me.

I know the 970 gives you the option to go 1 size larger just by boring without any major undertakings such as building new cylinders (but thats only if you need to) for a second time. But since I'm only fulfilling an older guy's fantasy and I'm not doing hard core drag racing or putting 50,000 miles on one of these big engines it's not likely I'm going to need to go up in size.

Jerry

PS Mods - Looks like another sticky to go with the Rods sticky

PPS - Jay, I hope you are doing both, having fun reliving something that was important to you and making a few bucks - THANKS!! It's good to have you back.
« Last Edit: October 22, 2008, 08:55:19 PM by Jerry Griffin aka Rxman »
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Offline 754

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Re: PISTONS
« Reply #2 on: October 22, 2008, 09:59:46 PM »
I could use either, have a loose 970 cc barrel right now, and I have sleeves to make a fresh 970  (or use my pistons).

I think for the sleeving work & expense, it is nice to have an overbore option.

Will you be selling pistons seperate (less sleeves), and will there be 2 compression ratio choices.. like 10.5 and 12 ?
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Offline Big Jay

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Re: PISTONS
« Reply #3 on: October 22, 2008, 10:31:52 PM »
Will be selling with or without sleeves, and parts only or ready to install block assemblies ( customers block )

Jay
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sohc4

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Re: PISTONS
« Reply #4 on: October 23, 2008, 12:21:32 AM »
I'd prefer 1000cc - I have two 70mm blocks around which could use an oversize, one a stock block and one Japauto VX1000 - regardless they called it 1000, it is still 'only' 970cc.

Cheers,
Axl
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Offline voxonda

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Re: PISTONS
« Reply #5 on: October 23, 2008, 01:30:16 AM »
Quote from: sohc4 on October 23, 2008, 12:21:32 AM
I'd prefer 1000cc - I have two 70mm blocks around which could use an oversize, one a stock block and one Japauto VX1000 - regardless they called it 1000, it is still 'only' 970cc.

Cheers,
Axl

Hi Axl, think they did that to intimidate the opposition. ;D ;D

cheers, Rob
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Offline MRieck

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Re: PISTONS
« Reply #6 on: October 23, 2008, 04:32:02 AM »
 You are talking a 71mm bore for the 1000 right?
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Offline KB02

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Re: PISTONS
« Reply #7 on: October 23, 2008, 05:06:37 AM »
I like the odd ball numbers, so I'd vote for 970cc. But 1000 seem nice, too....  ;D
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Offline voxonda

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Re: PISTONS
« Reply #8 on: October 23, 2008, 05:14:09 AM »
JAPAUTO  ??? ???, make it 970 for me please! ;D ;D

Thanks Big J.

Cheers, rob
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Offline Soos

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Re: PISTONS
« Reply #9 on: October 23, 2008, 06:04:40 AM »
Ape never ceases to amaze me!

If wishes were money... i'd buy 10 sets or so!


Keep up the good work!


l8r
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sohc4

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Re: PISTONS
« Reply #10 on: October 23, 2008, 06:23:45 AM »
Quote from: voxonda on October 23, 2008, 01:30:16 AM
Quote from: sohc4 on October 23, 2008, 12:21:32 AM
I'd prefer 1000cc - I have two 70mm blocks around which could use an oversize, one a stock block and one Japauto VX1000 - regardless they called it 1000, it is still 'only' 970cc.

Cheers,
Axl

Hi Axl, think they did that to intimidate the opposition. ;D ;D

cheers, Rob
Rob,

confuse, I would rather say - the block was called the VX1000, on the sidecovers they had '950' emblems, and in fact it was a 970  ;D ;D ;D

Cheers,
Axl
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Offline MRieck

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Re: PISTONS
« Reply #11 on: October 23, 2008, 06:40:02 AM »
 Also...will a nice multilayer headgasket be available and possibly a .010 viton coated base gasket be available.
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Offline Big Jay

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Re: PISTONS
« Reply #12 on: October 23, 2008, 01:41:37 PM »
Quote from: MRieck on October 23, 2008, 06:40:02 AM
Also...will a nice multilayer headgasket be available and possibly a .010 viton coated base gasket be available.

We can make that happen.

Jay
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Metalhead

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Re: PISTONS
« Reply #13 on: October 23, 2008, 02:56:40 PM »
JAY,
I got the rods, now I need some big pistons.

Jeff if you see this in time our BBQ and
machine gun shoot is saturday call me.
Wayne
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Offline Terry in Australia

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Re: PISTONS
« Reply #14 on: October 24, 2008, 04:02:48 PM »
How about 1060cc Jay? I need a set of rings for my pistons, ha ha! ;D
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Offline MRieck

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Re: PISTONS
« Reply #15 on: October 24, 2008, 06:12:58 PM »
Quote from: Terry in Australia on October 24, 2008, 04:02:48 PM
How about 1060cc Jay? I need a set of rings for my pistons, ha ha! ;D
Over 7,000 posts :o.....you got to much say in anything bro. ;)
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Offline Terry in Australia

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Re: PISTONS
« Reply #16 on: October 24, 2008, 10:53:22 PM »
Quote from: MRieck on October 24, 2008, 06:12:58 PM
Quote from: Terry in Australia on October 24, 2008, 04:02:48 PM
How about 1060cc Jay? I need a set of rings for my pistons, ha ha! ;D
Over 7,000 posts :o.....you got to much say in anything bro. ;)

Yeah, but this is such a great site Mike, almost every thread interests me! ;D
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So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Big Jay

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Re: PISTONS
« Reply #17 on: October 24, 2008, 11:01:48 PM »
Quote from: Terry in Australia on October 24, 2008, 04:02:48 PM
How about 1060cc Jay? I need a set of rings for my pistons, ha ha! ;D

You need a set of 73mm rings for an old 1060 (1055) kit?  Try a set of fourth over rings from the original Honda GL1000 Goldwing.

Jay
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Offline Terry in Australia

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Re: PISTONS
« Reply #18 on: October 25, 2008, 01:25:33 AM »
Quote from: Big Jay on October 24, 2008, 11:01:48 PM
Quote from: Terry in Australia on October 24, 2008, 04:02:48 PM
How about 1060cc Jay? I need a set of rings for my pistons, ha ha! ;D

You need a set of 73mm rings for an old 1060 (1055) kit?  Try a set of fourth over rings from the original Honda GL1000 Goldwing.

Jay

Hey thanks Jay! Cheers, Terry. ;D
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I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline MRieck

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Re: PISTONS
« Reply #19 on: October 27, 2008, 05:08:37 AM »
Quote from: Big Jay on October 22, 2008, 08:40:15 PM
Now that we have made the connecting rods the strongest part in the CB750 engine, it is time to talk pistons.

What are people interested in, 970 or 1000cc or both.

Give me some idea?

Jay
Bump and I 'd take a set of 1000 pistons.
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Offline MRieck

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Re: PISTONS
« Reply #20 on: October 27, 2008, 06:38:29 PM »
bump. I'll take History for 1000.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: PISTONS
« Reply #21 on: October 27, 2008, 07:46:14 PM »
Mike,

You're trying to break 100hp, huh?! 98 just isn't good enough for you, huh?!  ;D  ;)

We still need to get the sticky for the rods swapped out for the pistons.
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Offline MRieck

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Re: PISTONS
« Reply #22 on: October 28, 2008, 05:22:35 PM »
Quote from: Jerry Griffin aka Rxman on October 27, 2008, 07:46:14 PM
Mike,

You're trying to break 100hp, huh?! 98 just isn't good enough for you, huh?!  ;D  ;)

We still need to get the sticky for the rods swapped out for the pistons.
Steve....can you make this happen?
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Offline Big Jay

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Re: PISTONS
« Reply #23 on: October 29, 2008, 05:17:15 PM »
Has anyone figured out how to contact a mod yet and get this thing stickied. I need to start getting solid numbers because this piston thing will be a go.

Jay
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Offline Sam Green Racing

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Re: PISTONS
« Reply #24 on: October 29, 2008, 08:00:44 PM »
I've PMed Steve in case Bob don't see the request.

What about  the CR of these pistons, it was asked ?

Sam.  ;)
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