Porting a ms460

[jmssaws]

A little more compression might help

 

[MustangMike]

My 046 was 175 stock, when Bret (Smittybilt) got done with it was 205. That saw was lethargic when it went to him, and he woke it up nicely.

My 046-D cylinder was a Mahle (found it on Craigslist, the guy had replaced it with an AM), the one Al likes the porting on is a no-name.

 

[jmssaws]

These cylinders vary in timing
This one is a good one.
Gonna try something different

 

[X 66 stang347 X]

A little more compression might help

Does it seem a little low? I was expecting maybe about 185. The rings and cly looked good. Had a little wear but the cross hatch was still a little visible. I'll check with another gauge to see if it was off


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[jmssaws]

Does it seem a little low? I was expecting maybe about 185. The rings and cly looked good. Had a little wear but the cross hatch was still a little visible. I'll check with another gauge to see if it was off


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Sounds right to me

 

[jmssaws]

Ok now I got
107 123 74

 

[Redfin]

Does it seem a little low? I was expecting maybe about 185. The rings and cly looked good. Had a little wear but the cross hatch was still a little visible. I'll check with another gauge to see if it was off


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Did you replace the rings?

 

[X 66 stang347 X]

Did you replace the rings?

No I didn't. I tore it down only to port.


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[jmssaws]

Taking so little off won't gain much and even if the old rings are used it will still need a little run time to seat in.

It doesn't need anymore compression
What's the port timing

 

[X 66 stang347 X]

I didn't check the timing. I didn't raise or lower anything. But I plan on learning more about that on my 064 build and maybe go back into the 460 to check and change.


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[jmssaws]

Depends on the cylinder how well it will run

064 cylinders are fairly consistent

 

[X 66 stang347 X]

Depends on the cylinder how well it will run

064 cylinders are fairly consistent

It was scored passed fixing so I put a 660 cylinder on it.And tapped my holes to 6mm w/ Heli-coils.


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[jmssaws]

It was scored passed fixing so I put a 660 cylinder on it.And tapped my holes to 6mm w/ Heli-coils.


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A 064 cylinder will generally be stronger than a 660 cylinder.
I have a dozen or so 064 cylinders if you want one.
Pm me if you do

 

[jmssaws]

Ruffed in transfers

 

[junkman]

Those base bolt holes look odd compared to what i am used too .

 

[jmssaws]

It's at 14.5k with a 9pin

 

[RI Chevy]

Nice! That things rips. No more rust in that muffler. Lol..The owner should be very happy with the saw.

 

[MustangMike]

If she pulls 14.5 in the cut with a 9 pin, you don't need no 90 cc saws!

 

[jmssaws]

This saw adds to my belief that you don't need a high exhaust for rpm,I had it to 15.5 and still 4 stroking good,and it's got numbers I've never used or seen anybody use and has a tiny single outlet with a oem screen.
It's 104.5 125 75

 

[jmssaws]

If she pulls 14.5 in the cut with a 9 pin, you don't need no 90 cc saws!

Not in the cut.
I did see 12k on the last cut