Author Topic: Custom made F2/3 pistons from chamber mold  (Read 1657 times)

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Offline dragracer

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Custom made F2/3 pistons from chamber mold
« on: June 14, 2016, 03:10:38 PM »
Does anyone have a picture of their custom made pistons from an F2/3 head chamber mold?? If so, can you please post the picture here along with specs on the piston - bore size and compression.

Thanks a bunch.

Offline slikwilli420

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Re: Custom made F2/3 pistons from chamber mold
« Reply #1 on: June 14, 2016, 03:17:24 PM »
I am newly interested in this as well. Not much in the way of high comp stock bore pistons. Maybe a 12.5:1 in 1mm overbore.
All you gotta do is do what you gotta do.

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Offline rklystron

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Re: Custom made F2/3 pistons from chamber mold
« Reply #2 on: June 14, 2016, 03:28:01 PM »
Did something like that a few years ago on a CB750F2. Posted a quick video on what I did. This may help.
1970 CB750 K0 (Bought in 73)
1972 XL250 (Bought new in 72)
1973 ST90 (Free)
1975 XL250 (Free)
1975 Rickman CR750
1982 CBX1000 Pro-link
1975 CB750 DRAG BIKE
1977 Custom Built CB750 Sturgis Bike (GL front end).
1977 CB750 F2 (Big Resto)
1977 CB750A (Auction Buy)
1978 CB750 K8 (My San Francisco ride)
1984 VFR750 (Bought New)

Offline bwaller

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Re: Custom made F2/3 pistons from chamber mold
« Reply #3 on: June 14, 2016, 04:01:58 PM »
slikwilli420, these Wiseco's are available in 62mm. Well check with them, not sure about for the F2/3

http://www.m3racing.com/graphics/parts/62mm_piston_kit.jpg

Offline slikwilli420

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Re: Custom made F2/3 pistons from chamber mold
« Reply #4 on: June 14, 2016, 04:56:01 PM »
Thanks Brent!
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline dragracer

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Re: Custom made F2/3 pistons from chamber mold
« Reply #5 on: June 14, 2016, 06:31:00 PM »
Did something like that a few years ago on a CB750F2. Posted a quick video on what I did. This may help.

Can you tell us what compression ratio the finished pistons were advertised by Arias????

Offline rklystron

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Re: Custom made F2/3 pistons from chamber mold
« Reply #6 on: June 15, 2016, 03:56:12 AM »
If I recall correctly ARIS did not give a advertised CR. These where about 12:1.
1970 CB750 K0 (Bought in 73)
1972 XL250 (Bought new in 72)
1973 ST90 (Free)
1975 XL250 (Free)
1975 Rickman CR750
1982 CBX1000 Pro-link
1975 CB750 DRAG BIKE
1977 Custom Built CB750 Sturgis Bike (GL front end).
1977 CB750 F2 (Big Resto)
1977 CB750A (Auction Buy)
1978 CB750 K8 (My San Francisco ride)
1984 VFR750 (Bought New)