Anyone running a CHAIN-LESS gear drive?
Thread Starter
Team Owner
Joined: Feb 1999
Posts: 34,455
Likes: 665
From: Republic of Texas
Anyone running a CHAIN-LESS gear drive?
I need to buy a timing gear and chain for the BB. I was thinking about a double roller, but thought to maybe run a Acu-drive system. Anyone running one? Is it good to 7,000rpms? Here's a pic.
Safety Car
Joined: Apr 2001
Posts: 4,795
Likes: 1
From: Regina Saskatchewan, Canada.
Re: Anyone running a CHAIN-LESS gear drive? (Corey 68)
They have their purpose which is to have extremely accurate cam timing but the whine they produce get's tiresome just like running open headers.
Advanced
Joined: May 2002
Posts: 84
Likes: 0
From: Gulf Coast MS
Re: Anyone running a CHAIN-LESS gear drive? (Corey 68)
I agree. I bought the "noisey "one and it is really getting on my nerves. first chance I get its coming out. Never taken mine to 7000 so don't know about that . :chevy
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Anyone running a CHAIN-LESS gear drive? (Corey 68)
I ran a peter Jackson gear drive , the noisy one and it does get on your nerves but I am old and things like noise bother me. Funny I'm also deaf but I can hear annoying rattles. :)
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Burning Brakes
Joined: Nov 2000
Posts: 1,126
Likes: 145
Re: Anyone running a CHAIN-LESS gear drive? (MikeC)
As I understand it, the valvetrain, springs and all, will vobrate in sympathy witht he vibrations transmitted from the crank.
This can lead to things such as valve float at certain enharmonic RPMs andincreased wear on valvetrain components.
Someone know knows this subject better than I can chime in now.
This can lead to things such as valve float at certain enharmonic RPMs andincreased wear on valvetrain components.
Someone know knows this subject better than I can chime in now.
Drifting
Joined: Oct 2000
Posts: 1,825
Likes: 56
From: Shawano WI
Re: Anyone running a CHAIN-LESS gear drive? (Kevin Mason)
A geardrive will transmit harmonics from the crank to the valvetrain. This will cause flucuations in the timing at certain RPM's. It won't affect the springs or the valve or cause the valves to float. Engines that use a non-dampened gear drive will on occasion show more wear in the pushrod tips. None of these situations are a enough to cause problems on a street motor. Unless you need a gear drive (roller cam with very stiff spings) you are better off with a double roller chain or a belt drive. Unless you really like the noise.
Melting Slicks
Joined: Mar 2002
Posts: 2,313
Likes: 0
From: The cure for the blues is eight cylinders roaring
Re: Anyone running a CHAIN-LESS gear drive? (Maurice)
I like mine I usualy get two comments.
Do you have a blower under that hood!
or
I think your power stearing is going out. :rolleyes:
Do you have a blower under that hood!
or
I think your power stearing is going out. :rolleyes:
Melting Slicks
Joined: Mar 2002
Posts: 2,313
Likes: 0
From: The cure for the blues is eight cylinders roaring
Re: Anyone running a CHAIN-LESS gear drive? (Fevre)
Sorry Fevre but a blower is not somthing I want sticking out of my hood and its not in my budget. :)
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Re: Anyone running a CHAIN-LESS gear drive? (Intimidator454)
My girlfriend and I went to our local car show and a Chevelle went by with gear drive and she chimed up " I think he's low on oil!!" :rolleyes: :lol: :lol:
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Re: Anyone running a CHAIN-LESS gear drive? (73-454)
Why, GM built 50 million V8's and the chains work perfect. So why mess with success
I would never consider one of them gear drives!!
:cheers:
Olivier
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: Anyone running a CHAIN-LESS gear drive? (Corey 68)
I'm into Sprint car racing. Years ago gear drives were a no no. Now every one has them in 360 ci. class sprinters. They run a light weight 3 gear unit as opposed to your pictured 4 gear. they have no problems running a Mag ignition and the fuel pump & power steering off the back end of billet roller cams.
I have the Crane billet roller setup with my solid roller cam. I just want to here the music of clicking valves. On cruise nights you can hear the gear drives coming down the street.
I have the Crane billet roller setup with my solid roller cam. I just want to here the music of clicking valves. On cruise nights you can hear the gear drives coming down the street.
