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post #1 of 2 (permalink) Old 09-25-03, 03:50 AM Thread Starter
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Urgent: Cam Timing

Hi, I have a stage 3 crow kit, On sat i am going to do the cam timing. The kit included a cam timing gear and when i first put it in i was told to use the same timing as std.

To set the timing, using a dial indicator, where do I put it? Does it have to go on the crank shaft? This is what crow told me to do, "The cam timing we would put a dial indicator on the inlet rocker arm
directly over the valve and set the lift to .065" to .070" at TDC".

Is this rite? Please help. I have the specs, do i have to refer to them?

---------------------------CROW COMPUTER CARD----------------------------
| PART NUMBER 2222549ohc L/C 115 Date 1-FEB-03 |
| Cam type: Asysmetrical profile Read in Head CUSTOM GRIND |
| ----------------------------------------------------------------------|
| Advance Ground on Cam: 1 Lobe separation: 115 |
| .075 VALVE TIMING ( Measured at the valve with no lash ) |
| Inlet opens: -9 BTDC Closes: 39 ABDC .075 Duration: 210 |
| Exhaust Opens: 36 BBDC Closes: -16 ATDC .075 Duration: 200 |
| Inlet opens: 20 BTDC Closes: 68 ABDC ADV Duration: 268 |
| Exhaust Opens: 66 BBDC Closes: 14 ATDC ADV Duration: 260 |
| Inlet lobe lift at TDC on the over lap:.063 |
| ----------------------------------------------------------------------|
| Valve lift Inlet: .5300 Inlet Rocker Ratio: 1.00 |
| Valve lift Exhaust: .5000 Exhaust Rocker Ratio: 1.00 |
| Valve Lash Inlet:%0.000 Valve Lash Exhaust: %0.000

Please help!!!!

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post #2 of 2 (permalink) Old 09-29-03, 03:49 AM
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Join Date: Jun 2001
Location: Western Australia
Posts: 865
Re: Urgent: Cam Timing

I know this reply is a bit late but anyway - my JMM cam came with lovely detailed printed instructions (including pictures). Unfortunately I've since lost them - or I'd send or fax 'em thru for you - maybe one of the other guys here with a JMM cam might step forward and shoot you thru a copy of their instructions?

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