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  #1 (permalink)  
Old May 3rd, 2002, 08:13 PM
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Noisy Crane Roller Cam?
Anybody have a noisy Crane Roller 212/206 cam in the 2100-2200 rpm range at about 45 mph cruise ? I have a Crane Roller Cam installed in a newly rebuild engine . I notice it is VERY noisy in the above range . Any RPM range above or below it sounds fine . What would cause the above condition ? Thanks.
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  #2 (permalink)  
Old May 4th, 2002, 07:18 AM
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ttt
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87 TR - PT6776S BB Turbo , 250 cu/in Stroker , Weber Racing CNC 109 Block , Champion Ported Intake , 75 lb/hr Injectors , ME-R , 62mm TB , DLS 218/218 Roller Cam ,T&D 1.65 Roller Rockers , PAC Alky Kit , Heads Race Ported & Polished by FrankG , 4" inlet pipe , TH DP , 3" TT Cat Back Exhaust , CAS V4 , Poston Headers , Walbro 340 Pump (Hot Wired) , Fully Prepped Transbraked TH400 w/ West Coast Racing Converter . BEST TIME TO DATE : 10.97et @ 128.34 mph/1.74 60 ft on pump gas & alky.

http://rides.webshots.com/album/105791401mgmznK http://www.youtube.com/watch?v=ZKochubXMl0 , http://gnttype.org/carofthemonth/arc...mdetails1.html

My TR's "Day At The Track" : http://www.youtube.com/watch?v=8JwUThcEKcA
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  #3 (permalink)  
Old May 4th, 2002, 12:16 PM
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I'm using the springs from Crane for that cam , and have stock rocker arms as well . It just seems real noisy "just at that RPM and cruise speed" .
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87 TR - PT6776S BB Turbo , 250 cu/in Stroker , Weber Racing CNC 109 Block , Champion Ported Intake , 75 lb/hr Injectors , ME-R , 62mm TB , DLS 218/218 Roller Cam ,T&D 1.65 Roller Rockers , PAC Alky Kit , Heads Race Ported & Polished by FrankG , 4" inlet pipe , TH DP , 3" TT Cat Back Exhaust , CAS V4 , Poston Headers , Walbro 340 Pump (Hot Wired) , Fully Prepped Transbraked TH400 w/ West Coast Racing Converter . BEST TIME TO DATE : 10.97et @ 128.34 mph/1.74 60 ft on pump gas & alky.

http://rides.webshots.com/album/105791401mgmznK http://www.youtube.com/watch?v=ZKochubXMl0 , http://gnttype.org/carofthemonth/arc...mdetails1.html

My TR's "Day At The Track" : http://www.youtube.com/watch?v=8JwUThcEKcA
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  #4 (permalink)  
Old May 5th, 2002, 08:40 AM
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Does it set off your knock sensor?
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Old May 5th, 2002, 10:19 AM
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yes it does set of the knock sensor . I'm getting .09-1.6 counts of knock intermittent.
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87 TR - PT6776S BB Turbo , 250 cu/in Stroker , Weber Racing CNC 109 Block , Champion Ported Intake , 75 lb/hr Injectors , ME-R , 62mm TB , DLS 218/218 Roller Cam ,T&D 1.65 Roller Rockers , PAC Alky Kit , Heads Race Ported & Polished by FrankG , 4" inlet pipe , TH DP , 3" TT Cat Back Exhaust , CAS V4 , Poston Headers , Walbro 340 Pump (Hot Wired) , Fully Prepped Transbraked TH400 w/ West Coast Racing Converter . BEST TIME TO DATE : 10.97et @ 128.34 mph/1.74 60 ft on pump gas & alky.

http://rides.webshots.com/album/105791401mgmznK http://www.youtube.com/watch?v=ZKochubXMl0 , http://gnttype.org/carofthemonth/arc...mdetails1.html

My TR's "Day At The Track" : http://www.youtube.com/watch?v=8JwUThcEKcA
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  #6 (permalink)  
Old May 5th, 2002, 12:31 PM
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did u check your preload on the cam if it is not at .030 atleast they will be noisy id say check that first also maybe a broken spring i had a set of crane springs brake in 2000 miles 2 cracked springs

george
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  #7 (permalink)  
Old May 5th, 2002, 12:49 PM
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is it visual to deternine if it's cracked spring ?
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87 TR - PT6776S BB Turbo , 250 cu/in Stroker , Weber Racing CNC 109 Block , Champion Ported Intake , 75 lb/hr Injectors , ME-R , 62mm TB , DLS 218/218 Roller Cam ,T&D 1.65 Roller Rockers , PAC Alky Kit , Heads Race Ported & Polished by FrankG , 4" inlet pipe , TH DP , 3" TT Cat Back Exhaust , CAS V4 , Poston Headers , Walbro 340 Pump (Hot Wired) , Fully Prepped Transbraked TH400 w/ West Coast Racing Converter . BEST TIME TO DATE : 10.97et @ 128.34 mph/1.74 60 ft on pump gas & alky.

http://rides.webshots.com/album/105791401mgmznK http://www.youtube.com/watch?v=ZKochubXMl0 , http://gnttype.org/carofthemonth/arc...mdetails1.html

My TR's "Day At The Track" : http://www.youtube.com/watch?v=8JwUThcEKcA
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  #8 (permalink)  
Old May 5th, 2002, 01:00 PM
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You wont keep up the pace
  
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yes you will see it plain as day

george
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  #9 (permalink)  
Old May 5th, 2002, 01:06 PM
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I'll do that . Thanks.
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87 TR - PT6776S BB Turbo , 250 cu/in Stroker , Weber Racing CNC 109 Block , Champion Ported Intake , 75 lb/hr Injectors , ME-R , 62mm TB , DLS 218/218 Roller Cam ,T&D 1.65 Roller Rockers , PAC Alky Kit , Heads Race Ported & Polished by FrankG , 4" inlet pipe , TH DP , 3" TT Cat Back Exhaust , CAS V4 , Poston Headers , Walbro 340 Pump (Hot Wired) , Fully Prepped Transbraked TH400 w/ West Coast Racing Converter . BEST TIME TO DATE : 10.97et @ 128.34 mph/1.74 60 ft on pump gas & alky.

http://rides.webshots.com/album/105791401mgmznK http://www.youtube.com/watch?v=ZKochubXMl0 , http://gnttype.org/carofthemonth/arc...mdetails1.html

My TR's "Day At The Track" : http://www.youtube.com/watch?v=8JwUThcEKcA
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  #10 (permalink)  
Old May 7th, 2002, 08:59 AM
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I also have noise. Fairly typical for the comp cam 206 setup. Using stock rockers and shafts have something to do with it. Obviously the valvetrain geometry is changed with the higher lift, duration etc.

Anyone running roller rockers out there with a flat tappet? Any noise reduction?
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