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i6 rocker ratios.maybe cheap mod? 

 

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 Post subject: i6 rocker ratios.maybe cheap mod?
Posted: Wed Jul 19, 2006 6:44 pm 
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I was just investigating cams on Crow Cams website and noticed that the rocker ratios are different from 89-98 i6 to 98-02.
The ratios are as follows: 89-98=2:1 ratio
98-02=1.8:1 ratio

When they advertise these things is the first number ie the 2 or the 1.8, the cam end or the pushrod end.

Now just thinking out loud does it then follow (if the first number is the cam side) that you will be able to get more lift in an early i6 from a standard cam simply by changing the rocker gear to the later rockers?

Cheap mod or not? :?

 

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Posted: Wed Jul 19, 2006 6:55 pm 
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not.

the early ones have the higher ratio, you'd theoretically benefit from putting 2:1 rockers on an AU, but the cams are different anyway, so its not possible.

 

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Posted: Wed Jul 19, 2006 7:01 pm 
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Yeah thought so but was just musing out loud. Never know when you stumble across simple things like that :lol:

 

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 Post subject: Re: i6 rocker ratios.maybe cheap mod?
Posted: Wed Jul 19, 2006 7:04 pm 
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xhute0 wrote:
When they advertise these things is the first number ie the 2 or the 1.8, the cam end or the pushrod end.


Overhead cam engines, no pushrods. cam pushes on rocker arm, fitted with hydrolic lash adjuster which pushes on valve or something like that.

 

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Posted: Wed Jul 19, 2006 7:10 pm 
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Sorry mate that was a typo. Didn't notice till you pointed it out meant cam end or valve end :lol:

 

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Posted: Wed Jul 19, 2006 7:22 pm 
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xhute0 wrote:
Sorry mate that was a typo. Didn't notice till you pointed it out meant cam end or valve end :lol:


It's cool I knew what you ment I'm just bored s**t this evening!

 

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Posted: Wed Jul 19, 2006 7:23 pm 
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Yeah know teh feeling. Ive been home from work since 8.30 this morning crook. I must've looked like s**t cos the boss told me to go home! And he never does that :lol:

 

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