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1 Anonymous Users
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Re: Race pistons, rods, cams, dual springs, retainers.... for A12/13/14/15. |
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Home away from home 
Joined: 2002/3/22 14:50
From St. Louis, MO USA
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Registered Users
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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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