Yet another 1.6 Roller Rockers thread
Thread Starter
Race Director
Joined: Feb 2002
Posts: 11,268
Likes: 14
From: Honolulu, HI
Yet another 1.6 Roller Rockers thread
O.k. I searched the archives and found too much and not enough info.
1.) Does anyone have an opinion on which ones are best for LT-1's ??
2.) What is the price range?
3.) Pro's and Con's
Thanks. :cheers:
1.) Does anyone have an opinion on which ones are best for LT-1's ??
2.) What is the price range?
3.) Pro's and Con's
Thanks. :cheers:
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
Re: Yet another 1.6 Roller Rockers thread (vvv90)
I have been running Crane Gold 1.6 RR's for over a year now, with no problems. However, if I had it to do over, I would probably buy the Comp Pro Magnum RR's.
Thread Starter
Race Director
Joined: Feb 2002
Posts: 11,268
Likes: 14
From: Honolulu, HI
Re: Yet another 1.6 Roller Rockers thread (STL94LT1)
That seems to be what people are saying. Now if I understand it right, all I have to do is file down the drip tabs on my stock covers and plug 'n play right?
What about other details for install, guides, adjustment, etc...?
What about other details for install, guides, adjustment, etc...?
Race Director
Joined: Aug 2002
Posts: 13,356
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From: tucson AZ
St. Jude Donor '04 & '05
Re: Yet another 1.6 Roller Rockers thread (vvv90)
I just always thought that the 1.6's were just a simple addon to gain a little more cam from our stock engine's....
Was I wrong......????
tony
:confused: :thumbs:
Was I wrong......????
tony
:confused: :thumbs:
Burning Brakes
Joined: May 2002
Posts: 831
Likes: 0
From: Iowa City IA
Re: Yet another 1.6 Roller Rockers thread (vvv90)
I researched this a while ago, and i have decided to go with comp cams pro magnum. They are stronger than crane gold and other aluminum setups, while being lighter. they are around the same price as the crane gold. PS: the LT4 used rockers made by crane.
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Yet another 1.6 Roller Rockers thread (oldace84)
Well, "simple" is a relative term in this case.
Generally, when doing 1.6RRs, you should also do seals & springs and, of course, check for coil bind. You may also need to shim the springs as you verify installed height to get seat pressure desired. You should also use new machined retainers to avoid a dropped valve.
With iron heads you likely need to have the pushrod slots machined larger to avoid binding with the new geometry as the stock slots act as guides for the pushrods. And, with an '85 or early '86, you may want to use 1.6s on intake & 1.5s on exhaust to avoid rough idle.
So, doing 1.6RRs isn't quite as simple as just installing them and setting the preload.
Generally, when doing 1.6RRs, you should also do seals & springs and, of course, check for coil bind. You may also need to shim the springs as you verify installed height to get seat pressure desired. You should also use new machined retainers to avoid a dropped valve.
With iron heads you likely need to have the pushrod slots machined larger to avoid binding with the new geometry as the stock slots act as guides for the pushrods. And, with an '85 or early '86, you may want to use 1.6s on intake & 1.5s on exhaust to avoid rough idle.
So, doing 1.6RRs isn't quite as simple as just installing them and setting the preload.
