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MP .030 over pistons #2251651
02/11/17 03:26 PM
02/11/17 03:26 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline OP
Not enough dumb comments...yet
Mr.Yuck  Offline OP
Not enough dumb comments...yet

Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Are these pistons any good? Going in a stock stroke 440 w/ Aluminum heads mild roller cam and 6psi of boost...

pistons


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Re: MP .030 over pistons [Re: Mr.Yuck] #2251835
02/11/17 09:30 PM
02/11/17 09:30 PM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
R

Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
I'm assuming they are cast. Not sure if that amt of boost would make them a bad choice or not. I think alot would depend if you kept it from pinging but I am just thinking out loud & here is a BTT for ya. EDIT OE cast pistons are very tough. we've beat em to death & no failures (normally aspirated tho).

Last edited by RapidRobert; 02/12/17 12:26 AM.

live every 24 hour block of time like it's your last day on earth
Re: MP .030 over pistons [Re: RapidRobert] #2251919
02/11/17 11:31 PM
02/11/17 11:31 PM
Joined: Feb 2003
Posts: 8,020
Pangaea
B5 Bee Offline
master
B5 Bee  Offline
master

Joined: Feb 2003
Posts: 8,020
Pangaea
RR is right, MP catalog shows P4529429 as cast.

Re: MP .030 over pistons [Re: Mr.Yuck] #2252243
02/12/17 02:05 PM
02/12/17 02:05 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline OP
Not enough dumb comments...yet
Mr.Yuck  Offline OP
Not enough dumb comments...yet

Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Thanks guys, thought as much. I did a very mild S/C'd 440 years ago w/ cast pistons, was ok until I didn't turn on the auxiliary fuel pump, burned up #3 TWICE. This build will be forged for sure.

Re: MP .030 over pistons [Re: Mr.Yuck] #2252289
02/12/17 03:06 PM
02/12/17 03:06 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
master

Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
They are made by SilvoLite and are very good cast pistons.


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: MP .030 over pistons [Re: Mr.Yuck] #2252607
02/12/17 10:24 PM
02/12/17 10:24 PM
Joined: Jan 2003
Posts: 1,022
Andrews,In. U.S.of A.
6
67_Satellite Offline
super stock
67_Satellite  Offline
super stock
6

Joined: Jan 2003
Posts: 1,022
Andrews,In. U.S.of A.
I have a set in my 383 and have had no problems. Part #P4529425.They are cast but have a lot of meat in them. I ran 15 lbs. of boost on them for 6 summers without failure I even melted a wastegate reference line and accidently ran 21lbs. on them until the head gasket blew.I replaced the gasket and drove it the rest of the year.

Re: MP .030 over pistons [Re: 67_Satellite] #2253790
02/14/17 11:51 PM
02/14/17 11:51 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline OP
Not enough dumb comments...yet
Mr.Yuck  Offline OP
Not enough dumb comments...yet

Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Originally Posted By 67_Satellite
I have a set in my 383 and have had no problems. Part #P4529425.They are cast but have a lot of meat in them. I ran 15 lbs. of boost on them for 6 summers without failure I even melted a wastegate reference line and accidently ran 21lbs. on them until the head gasket blew.I replaced the gasket and drove it the rest of the year.


wow impressive...







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