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Variation of the stealth 1 cam?

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Old Sep 16, 2004 | 07:14 AM
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Default Variation of the stealth 1 cam?

I picked up a used Lunati Cam that I think is very close to the stealth1 cam or a variation of the B1/T1 cam

the specs are:
adv duration: 283/283
duration @50 221/221
lift 258/258
LSA 116
The markings on the cam are RRS1-221/221-B 116

Anyone know if the ramp rates are the same as the stealth 1 or B1 or if there is a way to tell how much advance is ground in?

Is there web site to get the rest of the specs on the cam using the serial#?

I already e-mailed Lunati but it cam back as a invalid address

Thanks

Last edited by MSGHUFF; Sep 16, 2004 at 07:23 AM.
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Old Sep 16, 2004 | 08:03 AM
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MTI stealth1 220/220, 581/.581 115 lsa straight up XE-R Comp grind
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Old Sep 16, 2004 | 08:48 AM
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Originally Posted by PREDATOR-Z
MTI stealth1 220/220, 581/.581 115 lsa straight up XE-R Comp grind
Thanks for the reply, any Idea what your advertised dur is?
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Old Sep 16, 2004 | 10:18 AM
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You mean advance duration?
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Old Sep 16, 2004 | 10:33 AM
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Originally Posted by PREDATOR-Z
You mean advance duration?
Advertised duration is seat-to-seat timing. ...duration at 0.001" if you will.
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Old Sep 16, 2004 | 11:03 AM
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Originally Posted by narcszm
Advertised duration is seat-to-seat timing. ...duration at 0.001" if you will.
Exactly, I want to know so I can calculate the ramp rate and compare it to the cam I got
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Old Sep 16, 2004 | 07:31 PM
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You have the answer to your question in the first post. The advertised duration is 283/283. Comp measures their advertised duration at .006; I assume Lunati uses the same, but do not know for sure.

Those are slooow ramps if the 283 is at .006. A 222 @.05 XE ramp is 275* and the XE-R lobe would be 271*
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Old Sep 16, 2004 | 10:06 PM
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To calculate ramp rate:
(DUR@.006)-(DUR@.050)=ramp rate

49< is an XE-R ramp rate or similar
53> is an XE ramp rate or similar

That 222 you mention has a rate of 62 which isn't even an XE, so yeap very slow rates.
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Old Sep 17, 2004 | 06:44 AM
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Originally Posted by Ragtop 99
You have the answer to your question in the first post. The advertised duration is 283/283. Comp measures their advertised duration at .006; I assume Lunati uses the same, but do not know for sure.

Those are slooow ramps if the 283 is at .006. A 222 @.05 XE ramp is 275* and the XE-R lobe would be 271*

I was trying to get the ramp rates for the stealth cam i know mine
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Old Sep 18, 2004 | 09:55 AM
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Stealth I .006 tappet lift, int: 269, exh: 269
Stealth II .006 tappet lift, int: 273, exh:269

Both have ramp rate of 49 and YES they are XE-R lobes
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