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Help with identifying pistons, 7025p #180529 01/01/09 03:35 PM 01/01/09 03:35 PM
Joined: Nov 2003 Posts: 5,048 Atlanta Indiana D Dave Watt OP master
Dave Watt OP master D Joined: Nov 2003 Posts: 5,048 Atlanta Indiana	I've looked for information on identifying these pistons but came up empty handed. They are stamped 7025p, have a 2.050" compression height not including the dome, the dome is another .025". I've tried Speed Pro and TRW websites and couldn't find anything. I'd like to find the compression ratio of them if possible. Can anyone help or lead me to a website for information? Thanks, Dave 4915687-DSCF197950.JPG (608 downloads)

Re: Help with identifying pistons, 7025p [Re: Dave Watt] #180530 01/01/09 03:35 PM 01/01/09 03:35 PM
Joined: Nov 2003 Posts: 5,048 Atlanta Indiana D Dave Watt OP master
Dave Watt OP master D Joined: Nov 2003 Posts: 5,048 Atlanta Indiana	Top. 4915690-DSCF198050.JPG (632 downloads)

Re: Help with identifying pistons, 7025p [Re: Dave Watt] #180531 01/01/09 03:40 PM 01/01/09 03:40 PM
Joined: Jan 2003 Posts: 465 Oconomowoc, WI. C Cudahlr mopar
Cudahlr mopar C Joined: Jan 2003 Posts: 465 Oconomowoc, WI.	Speed pro? 1968 Barracuda 360/727 11.20 @ 121 mph 421 rwhp 1985 Harley Sportster Bobber 2006 Ram 2500 sport - The Cudahlr

Re: Help with identifying pistons, 7025p [Re: Dave Watt] #180532 01/01/09 03:56 PM 01/01/09 03:56 PM
Joined: Jan 2003 Posts: 1,090 The Sunny Shuswap D dodgefarmer super stock
dodgefarmer super stock D Joined: Jan 2003 Posts: 1,090 The Sunny Shuswap	Definitely speed-pro about 20 yrs. old, crossover to L2295F. If the dome is at 0.025" it's been cut down. Randy

Re: Help with identifying pistons, 7025p [Re: dodgefarmer] #180533 01/01/09 04:52 PM 01/01/09 04:52 PM
Joined: Nov 2003 Posts: 5,048 Atlanta Indiana D Dave Watt OP master
Dave Watt OP master D Joined: Nov 2003 Posts: 5,048 Atlanta Indiana	Thanks for the help. I don't think the dome has been cut down since the 7025p is still visible on top. I know they are at least from the mid '80's according to a previous owner of the car.

Re: Help with identifying pistons, 7025p [Re: Dave Watt] #180534 01/01/09 05:42 PM 01/01/09 05:42 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	.025 dome or a .250 dome? looks kinda tall for .025.

Re: Help with identifying pistons, 7025p [Re: Dave Watt] #180535 01/01/09 05:51 PM 01/01/09 05:51 PM
Joined: Jan 2003 Posts: 1,090 The Sunny Shuswap D dodgefarmer super stock
dodgefarmer super stock D Joined: Jan 2003 Posts: 1,090 The Sunny Shuswap	Looking at the pics again, I think you're right. I can see the 060 in the carbon in pic #2 and according to the specs. page in my catalog it should have a 0.125" dome which looks about right.(comparing dome ht. to ring groove thickness) Randy

Re: Help with identifying pistons, 7025p [Re: dodgefarmer] #180536 01/01/09 06:12 PM 01/01/09 06:12 PM
Joined: Nov 2003 Posts: 5,048 Atlanta Indiana D Dave Watt OP master
Dave Watt OP master D Joined: Nov 2003 Posts: 5,048 Atlanta Indiana	You're right, my fault. I said .025" dome but it is a .125" dome. 2.050" compression height plus .125" dome. Does this seem to be 12.5 to 1 like the previous owner said? Sounds like we're getting closer to identifying them. Last edited by Dave Watt; 01/01/09 06:22 PM.

Re: Help with identifying pistons, 7025p [Re: Dave Watt] #180537 01/02/09 12:42 AM 01/02/09 12:42 AM
Joined: Jan 2003 Posts: 1,090 The Sunny Shuswap D dodgefarmer super stock
dodgefarmer super stock D Joined: Jan 2003 Posts: 1,090 The Sunny Shuswap	Book says 11.9 with 85cc head. 0.022" gasket and 0.020" deck clearance. Piston also weighs 815gr. without the pin. Randy

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