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Peter_Plade
Samba Member
Joined: January 09, 2005
Posts: 551
Location: Denmark
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pig-pen
Samba Member
Joined: December 04, 2012
Posts: 570
Location: United Kingdom
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 Posted: Fri Jun 06, 2014 8:40 am Post subject: |
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| when did they become available? I would like some. |
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GTV
Samba Member
Joined: March 27, 2004
Posts: 2084
Location: Si'ahl
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| Posted: Fri Jun 06, 2014 1:53 pm Post subject: |
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About time!!
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EMPI Power Rules! |
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58Blue
Samba Member
Joined: June 30, 2010
Posts: 114
Location: Ontario, Canada
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Mr. Motorhead
Mad Scientist
Joined: January 06, 2004
Posts: 717
Location: Practitioner of 36hp alchemy
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| Posted: Fri Jun 06, 2014 5:06 pm Post subject: |
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I've been waiting to actually get them before I put them up on the site, should be sometime soon. There were a few available and that may be where some places that are listing them got some sets. And no, these are not the same as the 356 80mm P/C set.
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"All limitations are self imposed."
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Peter_Plade
Samba Member
Joined: January 09, 2005
Posts: 551
Location: Denmark
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Kjell Roar
Samba Member
Joined: December 08, 2008
Posts: 1326
Location: Norway
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Alstrup
Samba Member
Joined: July 12, 2007
Posts: 7212
Location: Videbaek Denmark
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| Posted: Sat Jun 07, 2014 9:29 am Post subject: |
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| Kjell Roar wrote: |
Seems like a better idea than try to modify my 83mm 40hp set...
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Depends on wheter you want to work a little or not to get the extra 80 cc 
That said, the 80 mm solution is not a bad idea as it does leave a more sturdy cylinderwall.
I had a set of 83 mm 356 Biral cylinders modified to accept the 30 hp bolt pattern this spring. They were a PITA to get right.
T |
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tobiasax
Samba Member
Joined: May 07, 2004
Posts: 202
Location: Sweden
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| Posted: Sat Jun 07, 2014 11:39 am Post subject: |
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Wow! A game changer…
Anyone got the measures on the skirts? Are they long enough if one wants to use spacers for a stroker crank?
1397cc with a WW crank... |
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pig-pen
Samba Member
Joined: December 04, 2012
Posts: 570
Location: United Kingdom
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| Posted: Sat Jun 07, 2014 12:00 pm Post subject: |
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| I think the point is no one has seen a set yet... or am I wrong. But they are on their way... |
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Peter_Plade
Samba Member
Joined: January 09, 2005
Posts: 551
Location: Denmark
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| Posted: Sat Jun 07, 2014 12:15 pm Post subject: |
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| tobiasax wrote: |
Wow! A game changer…
Anyone got the measures on the skirts? Are they long enough if one wants to use spacers for a stroker crank?
1397cc with a WW crank... |
Why do you think the skirts would be shorter?
I'm planing on buying a set and use them it with my stroker crank.
If there isn't anybody with any experience on these, then we all will have to make our own, and then get back to this thread in a year or two 
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Alstrup
Samba Member
Joined: July 12, 2007
Posts: 7212
Location: Videbaek Denmark
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| Posted: Sat Jun 07, 2014 12:35 pm Post subject: |
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| Peter_Plade wrote: |
If there isn't anybody with any experience on these, then we all will have to make our own, and then get back to this thread in a year or two |
I think that´s where we´re heading Peter.
T |
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tobiasax
Samba Member
Joined: May 07, 2004
Posts: 202
Location: Sweden
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| Posted: Sat Jun 07, 2014 2:38 pm Post subject: |
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| Peter_Plade wrote: |
Why do you think the skirts would be shorter?
I'm planing on buying a set and use them it with my stroker crank.
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30/36 hp pistons came in two versions. One with short, and one with long (pre -57), cylinder skirts. I don't know how important it is, but if spacing for a 74 mm stroker the longer ones will give better support.
Another thing I am curios about is how important the wall thickness is. The hole in the case is 81.8 mm which give a 0.9 mm wall thickness with 80 mm cylinders. It might be OK, but it feels a bit thin. |
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dave1
Samba Member
Joined: September 12, 2003
Posts: 478
Location: United Kingdom, London
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| Posted: Sat Jun 07, 2014 5:15 pm Post subject: 80mm pistons |
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Guys will these go with a pepco charger or will this be to much for a standard 30hp engine?
Are these available to purchase? I'd appreciate your comments
cheers
Dave |
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txoval
Samba Member
Joined: January 23, 2004
Posts: 3552
Location: The Woodlands, TX
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| Posted: Sat Jun 07, 2014 6:00 pm Post subject: Re: 80mm pistons |
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These are brand new, not much experience from anyone yet. Follow the link above, appears John at aircooled.net is selling them
| dave1 wrote: |
Guys will these go with a pepco charger or will this be to much for a standard 30hp engine?
Are these available to purchase? I'd appreciate your comments
cheers
Dave |
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Peter_Plade
Samba Member
Joined: January 09, 2005
Posts: 551
Location: Denmark
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| Posted: Sat Jun 07, 2014 10:53 pm Post subject: |
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| tobiasax wrote: |
| Peter_Plade wrote: |
Why do you think the skirts would be shorter?
I'm planing on buying a set and use them it with my stroker crank.
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30/36 hp pistons came in two versions. One with short, and one with long (pre -57), cylinder skirts. I don't know how important it is, but if spacing for a 74 mm stroker the longer ones will give better support.
Another thing I am curios about is how important the wall thickness is. The hole in the case is 81.8 mm which give a 0.9 mm wall thickness with 80 mm cylinders. It might be OK, but it feels a bit thin. |
Thanks I never noticed that, must only have had my hands on pre 57 cylinders, will go and check if I have some that are different in skirt length.
My first question also involved the wall thickness, as I'm also a bit worried if the cylinders will get to much heat and then turn oval instead of round?
I agree with you that 0,9 on the skirt sounds a bit thin.
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tobiasax
Samba Member
Joined: May 07, 2004
Posts: 202
Location: Sweden
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| Posted: Sun Jun 08, 2014 11:21 am Post subject: |
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| Peter_Plade wrote: |
Thanks I never noticed that, must only have had my hands on pre 57 cylinders, will go and check if I have some that are different in skirt length.
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Here is a pic of early/late 30/36 hp cylinders (for a 69,5 mm crank I think the shorter would be sufficient, but with 74 mm I would go for the longer ones):
http://lowlightkaizen.blogspot.se/2014/05/pre-july-1957-cylinders-good-for.html
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Peter_Plade
Samba Member
Joined: January 09, 2005
Posts: 551
Location: Denmark
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| Posted: Sun Jun 08, 2014 11:30 am Post subject: |
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I checked my stash and found some cylinders with different skirt length.
The long skirts are 32mm and the short ones are 24mm, I'm using 4mm cylinder shims so I don't think the skirt length will be a problem.
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Bengt H
Samba Member
Joined: September 11, 2005
Posts: 332
Location: Sweden
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| Posted: Sun Jun 08, 2014 1:12 pm Post subject: |
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80mm is a very good idea but the "slip in" with 0,9 is way to thin in my world, I have originals with cracs in this area... it must be very thin in the top end also  |
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tobiasax
Samba Member
Joined: May 07, 2004
Posts: 202
Location: Sweden
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| Posted: Sun Jun 08, 2014 10:14 pm Post subject: |
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By the way: Is this a real product or a "test balloon"?
I remember back in the 80's some of the "innovative" VW aftermarket suppliers sometimes advertised products that did not exist just to check if there was a market interest...
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