gs1000 cam degrees

[wildeye]

has any one degreed the stock cam in a 79 gs1000. if so what are the stock degrees and what degree's you set to , did you get better top end ,mid or bottom end ,??

 

[GregT]

Std lobe centres would appear to be 110/110 nominal. Where you reset them to is very much personal preference based on what you want out of it...

The search function should bring up more.

 

[wildeye]

like to get more bottom and mid range , but I did search and could not find any thing on the 79 1000

 

[TeamDar]

Set them both at 105 for low to mid range power.

 

[tfb]

I've read that retarding the timing of the intake cam by 2 degrees will give you more bottom-end stomp.

 

[wildeye]

hey guys thanks for info so far , if any one had more input be nice to hear ,

 

[Guest]

If it was my motor I would be putting the cams at 104 intake and 106 exhaust for bottom end to mid range. I never run the same intake and exhaust cam lobe centers. Make sure you check your valve to piston clearance. It should be fine with stock parts but I always like to check. It is to easy not to check.
Whoever posted 110 on both must like to sing his motor up to the 10,000 plus range or he just grabbed the generic numbers from a aftermarket cam web site. 110 lobe centers will have the bike building its peek power at about 10,000 rpm. 104/106 will give you gobs of bottom end power with the peek power going to about 8,500 rpm

 

[jimb12]

I've read that retarding the timing of the intake cam by 2 degrees will give you more bottom-end stomp.

I would say this is the opposite of what happens, as later intake timing tends to help at higher rpm not lower.

 

[tfb]

Thanks jimb12... but by 'retarding' the intake cam, I think it is meant that the intake timing is in fact made *earlier* and not later.
So you are correct: later (or 'advanced') intake cam timing will help at higher rpm, whereas earlier (or 'retarded') intake timing will help at lower rpm. Hence, more bottom-end stomp.

 

[TeamDar]

Advancing the intake cam is opening the valve sooner. Retarding the intake cam opens the valve later. Period...

 

[Guest]

Advancing the intake cam is opening the valve sooner. Retarding the intake cam opens the valve later. Period...

Maybe because tfb is from Australia the motors spin backwards over there like the toilets do. Lol.

 

[jimb12]

Thanks jimb12... but by 'retarding' the intake cam, I think it is meant that the intake timing is in fact made *earlier* and not later.
So you are correct: later (or 'advanced') intake cam timing will help at higher rpm, whereas earlier (or 'retarded') intake timing will help at lower rpm. Hence, more bottom-end stomp.

You have your terms backwards. Retarding means that the valve events happen later, and advancing means the valve events occur earlier.

 

[tfb]

Thanks all for pointing that out.