Recent content by Red97

Any idea what the 7310 is limited to?

My current race lineup 3ci, slow echo stroker currently on nitro 4ci, poulan pro 415 5ci, currently dolmar 7910 6ci 2100xp Unlimited, 3120

+1 on the 361 What rules?

Working on finding some more power from this little critter.

Red line is clone g660 ported hyway full timing advance/most powerful pull. Blue line is iron sleeve, first pulls, stock timing on my late ms660. I'm thinking some advance may wake it up.

If anyone wants to watch this cylinder build. Engine noise/ Dyno pulls at the end.

All installed and ready to make some pulls. Did notice my oiler worm was broken.

Cost is about rhe same either way I would imagine. A ton of time into these. And some cylinders/blocks won't take a sleeve without cracking. Macs are bad about that from what I have heard.

Few chips along the way.

Thank you It is a purchased sleeve blank. They have them in various sizes. They grind fairly well. A double cut burr really does well. Easier and smoother than aluminum really. Very smooth just a bit slower.

Yeh, was pretty disappointed. Good thing I decided to build a 2nd saw vs running that one. Never would have known.

Me being the stubborn fool I can be decided I am going to fix this problem.... Plating can't chip if it doesn't have any.. So I bore it 56mm and spin up an iron sleeve approx 2mm wall thickness. Sleeve installed, bored and honed. Port heights installed And all finished. Chamber work...

So.... we all know by now porting 98% of aftmarket cylinders is a waste of time. (Cheap chrome white box cylinders port the best, but still have issue) Little back story. Have an event coming up that is racing clone saws 660/372.... Cool, they also have firewood classes 55,65,85cc So I got...

Here was a fun one. Little 44mm p55 cylinder.

Poulan pro 425