circle crank ms660

[jmssaws]

I'm gonna run it in a minute with a standard crank just to see the difference.

It runs good but feels bound still.

 

[jmssaws]

I've been trying to go back and read the posts from late last night, I went to bed and missed some of this. Did you end up epoxying the lowers?

No its completely stock right now, nothing but machine work so far

 

[GoBigBlue1984]

So nothing has changed since the first video?

 

[jmssaws]

No

 

[jmssaws]

I only changing the crank so I know what and what isn't making a gain. One thing at a time.

 

[GoBigBlue1984]

That's a good idea

 

[jmssaws]

Here it is with a regular crank,I changed nothing other than its tuned at a still slow 14000. Still strong

 

[jmssaws]

This has me buffao'd

 

[awol]

Hmmmmmm..........interesting!

 

[jmssaws]

Hmmmmmm..........interesting!

It's tuned faster in that video but it seems a little strongerthan before. Interesting indeed

 

[Moparmyway]

This has me buffao'd

Why, it has some of the best numbers from a stock cylinder

 

[jmssaws]

Why, its one of the best numbers from a stock cylinder

Yes but it runs amazing for stock. I'm hesitant to port it. Lol

 

[jmssaws]

Did we gain velocity but loose to much volume? Do we not need the velocity?

 

[jmssaws]

Should I try 100 120 78?

98 118 80?
99 119 80?

 

[Moparmyway]

You know I like 100-120-78

 

[jmssaws]

You know I like 100-120-78

My favorite numbers too.
That's what my 066 is and it's strong but this saw will clobber it.

 

[Moparmyway]

My favorite numbers too.
That's what my 066 is and it's strong but this saw will clobber it.

Maybe I should mail you my 661 to try. I'd like to see where she lands in the pecking order

What are the stock timing numbers again ?

 

[jmssaws]

I'll have a 661 here Monday to tinker with,I'm going to put a carb on it. If I don't like it I'll remove it.

 

[smokey7]

I wonder why this set up with the 288 piston is so much better then a full ported 66? I am wondering if it has to do with rod angle?

 

[jmssaws]

I wonder why this set up with the 288 piston is so much better then a full ported 66? I am wondering if it has to do with rod angle?

The thing is that it's still stock so any piston right now would be fine,we use a 288 piston so we can go wider on the ports but nothing has been ground on yet.

The 288 piston is helping with the decent timing numbers I've got.

It's just a stock saw with extra compression right now.