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Author Topic: pd pilot jet tapping???  (Read 847 times)

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Offline seat cover man

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pd pilot jet tapping???
« on: April 20, 2014, 05:59:36 PM »
Stupid question... Can i tap my pd carbs pilot jet hole so i can just order tge screw ins? I cannot find 42s for the press in style anywhere but ontario canada. Everyone is sold out. Thanks
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71' CB750 K1

Offline bjbuchanan

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Re: pd pilot jet tapping???
« Reply #1 on: April 20, 2014, 06:45:53 PM »
You could with a bottoming tap, I wouldn't use regular because you would only actually catch a couple threads that way.

I have thought about this myself but I don't have pd's so I haven't worried too much. Some of the round tops have little inserts there that are stronger than the regular carb body. One rack I have doesn't have them, and has a stripped pilot. Just a thought, If you were to do it
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The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline raymond10078

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Re: pd pilot jet tapping???
« Reply #2 on: April 20, 2014, 06:55:00 PM »
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1978 CB750A (upgrading very, very slowly)

Past bikes - Honda: SL350, CX650C, CB900C, CB1000C, CM450A; Kawasaki: several 1972 750 H2's; Suzuki: TC90J.

Bikes I want: CX650ED, a mid-sized japanese V-twin with ABS.

Offline flybox1

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Re: pd pilot jet tapping???
« Reply #3 on: April 20, 2014, 07:46:10 PM »
Siriusconinc.com has a good selection of press ins....
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline seat cover man

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Re: pd pilot jet tapping???
« Reply #4 on: April 20, 2014, 08:16:49 PM »
Yeah thats who ive found em with but it says they are in canada and i dont know what shipping is time/money
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71' CB750 K1

Offline brewsky

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Re: pd pilot jet tapping???
« Reply #5 on: April 21, 2014, 05:02:49 AM »
Be aware the aftermarket push in slo jets may not run true to size.

See here:
http://forums.sohc4.net/index.php?topic=112370.0
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66 CA77
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78 CB750K
02 FZ1
09 GL 1800

Offline lucky

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Re: pd pilot jet tapping???
« Reply #6 on: April 21, 2014, 08:32:36 AM »
I have ordered many jets from Sirius and had no problems.
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Offline KRONUS0100

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Re: pd pilot jet tapping???
« Reply #7 on: April 21, 2014, 10:00:22 AM »
ordered float bowl gasket for a 750 from sirius.  fast shipping.  exellent product
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MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E
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