ATV Drag Racer Forums banner
1 - 18 of 18 Posts

·
Registered
Joined
·
246 Posts
Discussion Starter · #1 ·
Debating on ditching the smaller motor build to go ahead and do my 10mil

I have a 10mil 120 rod crank with the 18mm wrist pin

I know that the standard 72mm blaster pistons wont work but I was wondering if 72mm 250r pistons would work?

Any ideas

there isnt a part number on calvin's website
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #2 ·
Looks like an air cooled 250r piston in 72mm might work but will prob have to run a thick base gasket to make up for the 120 rod.

72mm x 64.4 stroke but I cant find the rod length right off the bat to do some math

or even a 72mm liquid cooled piston would be better what are they polaris pistons
 

·
Registered
Joined
·
250 Posts
QUOTE (Chugger @ Mar 26 2009, 08:09 AM) index.php?act=findpost&pid=35821Looks like an air cooled 250r piston in 72mm might work but will prob have to run a thick base gasket to make up for the 120 rod.

72mm x 64.4 stroke but I cant find the rod length right off the bat to do some math

or even a 72mm liquid cooled piston would be better what are they polaris pistons

Seems like you would need to know the deck height also, do they have the same style intake windows in them, pin size?
 

·
Registered
Joined
·
1,061 Posts
I have a set of pistons out of a 72 super cub with a 120 rod crank... I am gonna run the 115 rod crank so If you want them I could sell um to ya... they have about 50 passes on um....
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #5 ·
QUOTE (Rumbleshee @ Mar 26 2009, 11:24 AM) index.php?act=findpost&pid=35822Seems like you would need to know the deck height also, do they have the same style intake windows in them, pin size?

Windows should be the same as cub just a bigger bore pin size needs to be 18mm
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #6 ·
QUOTE (badassbanshee479 @ Mar 26 2009, 11:48 AM) index.php?act=findpost&pid=35828I have a set of pistons out of a 72 super cub with a 120 rod crank... I am gonna run the 115 rod crank so If you want them I could sell um to ya... they have about 50 passes on um....

pm me a price also whats the wrist pin size?
are the wiseco's or what
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #9 ·
QUOTE (badassbanshee479 @ Mar 26 2009, 02:56 PM) index.php?act=findpost&pid=35845they are wisecos, big pin. I beleive they are 18mm I will double check them tonight....

I am concerned with the deck height as well.

badass what did you have them in what size super cub?
 

·
Registered
Joined
·
1,061 Posts
they were in a 72.00mm super cub with a 10 mill 120 rod crank. I was told it used a .020 base gasket and had around .045 squish....

I just bought this top end off of planet sand.... titan racing set it up the first time.
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #11 ·
QUOTE (badassbanshee479 @ Mar 27 2009, 11:20 AM) index.php?act=findpost&pid=35941they were in a 72.00mm super cub with a 10 mill 120 rod crank. I was told it used a .020 base gasket and had around .045 squish....

I just bought this top end off of planet sand.... titan racing set it up the first time.

Nice can you pm the wiseco part number I just wanna check the availability. I will buy yours but if its gonna be the only set I will be able to get I will go another route. But if its a easy to get piston I will buy them.
 

·
Registered
Joined
·
1,061 Posts
I have the part number writen down for ya.....

I ended up getting a steal on a 120 rod crank so I am gonna run my pistons......

I will pm ya the part number though.
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #14 ·
QUOTE (badassbanshee479 @ Mar 31 2009, 07:19 AM) index.php?act=findpost&pid=36393I have the part number writen down for ya.....

I ended up getting a steal on a 120 rod crank so I am gonna run my pistons......

I will pm ya the part number though.

I got a steal too thats why I got the 120 rod as well but it just harder to find pistons.
yea shoot me the pm so I can get a set ordered.
thanks again
chris
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #16 ·
QUOTE (badassbanshee479 @ Mar 31 2009, 08:27 PM) index.php?act=findpost&pid=36508part number on the piston is


10387m
72.00mm

there is also 6774I on there as well.... hope this helps.

None of those numbers work are there any other numbers on it?
 

·
Registered
Joined
·
246 Posts
Discussion Starter · #18 ·
QUOTE (Backcountry @ Apr 2 2009, 02:37 PM) index.php?act=findpost&pid=3673710387M07200 is the part number. They are custom pistons, they arent off the shelf OEM pistons. Should be available thru Titan, McCoys, Trinity....

thank you man I appreciate it
 
1 - 18 of 18 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top