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Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15.
Home away from home
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2002/3/22 14:50
From St. Louis, MO USA
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These springs are made to go 9000-9500 rpm.

To raise the rpms, we first added a larger oil pump. Next we found that 9000 rpm would require worked rods with better rod bolts (or at least new rod bolts all of the time). When we switched to aftermarket rods we could go to 9500-10,000.

Next we found the valve train weaknesses. Make sure to replace the rocker threads with steel inserts. By using rocker tower studs; or going to 10mm bolts, 10,000 was fine with the A12 (9200-9400 with the A14 and A15).

These springs will safely go 8500 rpm forever, 9200 rpm for a few seasons.

Posted on: 2009/12/3 2:24
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Subject Poster Date
     Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. pjz 2009/11/29 15:42
       Re: Race pistons, rods, cams, oil cooler pjz 2009/11/29 15:48
       Re: Race pistons, rods, cams for A12/13/14/15. pjz 2009/11/29 15:57
         Re: Race pistons, rods, cams for A12/13/14/15. Dundee1000 2009/11/29 23:22
       Re: Race pistons, rods, cams for A12/13/14/15. pjz 2009/11/29 23:52
         Re: Race pistons, rods, cams for A12/13/14/15. dattoman_1000 2009/11/30 2:16
       Re: Race pistons, rods, cams for A12/13/14/15. floss 2009/12/2 0:12
       Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. pjz 2009/12/2 3:33
         Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. lamb_daiquiri 2009/12/3 1:42
       Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. pjz 2009/12/3 2:24
         Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. LittleFireyOne 2009/12/3 2:54
       Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. dattosans 2009/12/3 9:58
         Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. LittleFireyOne 2009/12/3 10:33
       Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. pjz 2009/12/3 19:38
       Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. pjz 2009/12/3 21:54




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