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> WTB: VALVE GUIDE CUTTER, EMPI HI- Performance single spring
rfinegan
post Jun 10 2026, 11:36 PM
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Looking for a valve guide boss cutter for 914 heads with 8/9 mm pilots to cut the valve guide boss for the Porsche 914 -4 2.0 l heads. MY springs are tight on bosses and need a little timing to fit

Buy rent or borrow most likely one time use
-Robert
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zig-n-zag
post Jun 12 2026, 06:17 PM
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The valve guide boss cutter is available at GeneBerg.com.

They also have the 9mm pilot so you’re able to cut the exhaust guide boss

On the type 4 head as well.
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Jack Standz
post Jun 12 2026, 11:40 PM
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+1 on the Gene Berg tool.

We have one and it worked just fine, but IIRC both valves were 8mm on the head it got used on.
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saigon71
post Jun 13 2026, 04:56 AM
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I just went through this.

If interested, the SCAT 20011 single hi-rev valve springs have a slightly larger inside diameter (.930) and fit without any trimming of the giude boss.

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rfinegan
post Jun 13 2026, 05:50 AM
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correct springs and H/W and not t1 springs may be cheeper that retooling
I have the empi/jbugs 4045 single high rev I got from PMB
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