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Which one's heavier? Historically, the forged pistons have been heavier.

It's definitely better but the tool is like $30 and hard to find. I would have bought one a long time ago, but denniskirk didn't have any in stock (that's when I found a flat bar for free and it has worked well for me). The way I see it, you get two chances with each stock coupler, and you...

You don't need a coupler tool, just use a flat bar between the teeth of the coupler.

I bought a tool from Randy @ Watcon, it was an old shaft that he cut to about 6" long on the spline end, and he welded a T onto the non-splined end... You can hold the T in a vice and turn the coupler with a long flat bar. That's what I do anyway.

I like my Slippery gloves better, unfortunatley I lost one of them... I think my mx gloves are Fox brand, they let more water in than the Slippery's do.

Luke, that looks really nice. I was worried when you first posted :bigeyes: Nice job on getting a 701 too.

How are you balancing it? Or are you just trying to copy someone else's?

I would try a rubber mallet or a standard hammer on a piece of wood (so you make a nice flat surface). Yes, just where it rubs. Might want to wear earplugs when you're banging on it.

Aluminum is really soft, you don't want it rubbing against anything (even Hydroturf).

Dent it, or grind the reinforcing down where it rubs.

If you're measuring the bore and stroke in centimeters, just do: Bore X Bore X stroke X 1.57 Very easy to remember.

The slim line won't cut it for bigger HP engines, 13/16 would almost be too low for a stock 701.

: It's a whole A/M hull. Looks sharp :biggthumpup:

Riva sells Yamaha flat tops now.

The V-Force II are about $260 and the Rad valves are around $310. IMO most people would have a hard time telling the difference between them, but I'd guess the V-Force work slightly better at low RPM's (soft reed setting) and the Rad's flow slightly more.

Sudcoo are OEM equivalent, so are ART pistons. One of the nice things about cast is since they use a smaller bore, if you mess your engine up you might be able to get away with a hone and same size Weisco pistons. Just my opinion.

$600 for a used B pipe? Now I have seen it all :bigeyes:

Freestyle porting can be whatever you want it to be :biggthumpup:

A good running one? Like the powervalves work and everything? Hard to say, most of the used one I've seen were blown up. If it looks reasonable it's probably a good deal. Anything under $1,500 for a good running longblock is a good deal IMHO.

I sold a core motor for $450 on Ebay last month, and I've never seen one cheaper.