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MustangMike

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More intake, a lot more, only change.


Nice!!! Two of the 3 big bores I got just seem to need base gasket delete and lowered intake, but the 3rd cylinder needed a lot more work.

On Cyl #3 the transfers were higher, initial #s were 102, 117.5, 63.5. It is now 97.5, 117, 77.5.

I got #2 and #3 running strong, but need to go further with the intake on #1. I moved it to 72.5, but it is still lethargic.

Did you have any carb problems?
 

Fruecrue

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Nice!!! Two of the 3 big bores I got just seem to need base gasket delete and lowered intake, but the 3rd cylinder needed a lot more work.

On Cyl #3 the transfers were higher, initial #s were 102, 117.5, 63.5. It is now 97.5, 117, 77.5.

I got #2 and #3 running strong, but need to go further with the intake on #1. I moved it to 72.5, but it is still lethargic.

Did you have any carb problems?
I Don’t F with China carbs, rattlesnakes or condoms.
I’m running a walbro HD-16L
 

MustangMike

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I Don’t F with China carbs, rattlesnakes or condoms.
I’m running a walbro HD-16L

I knew you were smarter than me … wise move!!!

Any problems with the choke working, or did you also replace the control lever?

I actually had good luck with the ones that came on the 660s, and some other AM ones I got, but the ones with these kits seem real finicky.

I put an AM one on an 044, and a Tree guy has been using it every day for about a year, no complaints.

I guess there are winners and losers with them.
 

Fruecrue

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I knew you were smarter than me … wise move!!!

Any problems with the choke working, or did you also replace the control lever?

I actually had good luck with the ones that came on the 660s, and some other AM ones I got, but the ones with these kits seem real finicky.

I put an AM one on an 044, and a Tree guy has been using it every day for about a year, no complaints.

I guess there are winners and losers with them.
No problems with the master control lever or choke, as long as you are very intentional with your actions. It is definitely not as smooth and care free as OEM.
 

MustangMike

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I put OEM carbs on 2 of em, one the choke just would not work. The other seemed to work (but stiff) until I needed to use it, then it just would not come on.

AM carbs back on both, seeing if I can work out problems with tune.

The OEM control lever is arched where it hits the choke, these are straight line. If I use an OEM, I may build it up a bit with PL Premium and file an arch into it.
 

MustangMike

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More intake, a lot more, only change.


Real nice improvement. Two questions:

1) did #2 vid still have base gasket?

2) where did your intake end up?

I've been shooting for 78 on mine, but I still need to re do #1 (only went from 64 to 72.5, and it is still kinda lethargic).

The squish on these seems to vary more than with the Cross 660 cylinders. Mine (w/o base gasket) were .030, .018 and .024.
 

Fruecrue

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Real nice improvement. Two questions:

1) did #2 vid still have base gasket?

2) where did your intake end up?

I've been shooting for 78 on mine, but I still need to re do #1 (only went from 64 to 72.5, and it is still kinda lethargic).

The squish on these seems to vary more than with the Cross 660 cylinders. Mine (w/o base gasket) were .030, .018 and .024.
Base gasket is in the saw in both videos, just easier when I plan to go back in.
Squish was .016” without.
I’m at 82 intake in the second video.
 
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