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Torch will only show lumps, you need to remove and measure with a feeler gauge. Has to be machined out. I can get you plastic one that you can push in after machining.

I grew up in PE and built a ported engine for someone's WB1 there last year. I've been in Jhb nearly 8yrs. You ride Kings Beach? Bluewater Bay?

Yes, on a Yamaha it is stainless steel piece inside of aluminuim housing, it can be machined out and replaced. Bulges can touch impeller, wearing it done and increasing the clearance which causes cavitation and loss of speed. The maximum gap between impeller and wear-ring is 0,6mm. When cranking...

WB2's are really solid skis. The weak point on all the old Yami skis is the wear-ring, check for bulges and cracks from galvanic corrosion. Where in RSA are you?

http://www.poweroad.com/productmore.aspx?ClassId=38&Unid=14 They state them as waterproof, it has a LED scale to show the charge level, just press the button to see it. I am running the 20L on my 1200

Most likely port timing is higher on the DASA, weakening the signal to carbs

20yrs ago I used to make pipes that fit to the stock manifold on the WB800, the skis pulled hard off the bottom. Be careful on skimming the stock head, didn't take much before head would flex between bolts and leak water into cylinder.

The epoxy comes loose from Alu housing, water gets in and can short parts inside, particularly a problem with salt water. You will have intermittent problems until brain dies. Lost 2 Brains like this until I figured it out. On a new brain, put waterproof grease / petroleum jelly over whole...

I have a good +16mm 1200 5-port cylinder and head. Needs rebuild, so new sleeves and pistons

Where do your Start/Stop wires run?

OEM hull is too heavy, even with cuts

20 min idle, cool down 20min varying to 1/4 throttle, cool down totally 20min varying to 1/2 throttle, cool down totally 20min varying to 3/4 throttle, cool down totally 20min varying to full throttle, cool down totally Ride it like you stole it

Sure

Message me with questions, I make my own moulds and hulls. Worked my way up from wet layup to vacuum bagging and now infusion.

Check welding holding leading edges of vanes. My maxx pump wasn't welded properly, vane leading edges started bending straight

Check midshaft seals and bearing housing to make sure you are not sucking air into pump from hull

Height and width of your Helium? Are there 2 versions on the Helium? The current one shows as a '2HE Helium' Regular XFS might scrape in on height minimum 'Scoopgrate must be full length with at least 1 bar running parallel to driveshaft', that makes the WDK hulls and Revolver R Pro Series illegal

Length minimum is 76", the Xscream website says a Helium is 74"

Length, width, height

There are rules but most hulls are illegal, I was told that there was a gentleman's agreement between riders to not protest each other