Me neither, hence the reason I recommend talking to Hoos or Hugh's. I have a Hoos crank waiting for me to get my butt in gear and I really like Gary. He's a great guy and gives great service.
XS cranks are far from rare, if you need a fresh crank core at rebuild time it's not hard or expensive to find one. A crank scissoring or spreading won't be at your convenience. I had a stock 650 go from running great to a crank end wobbling like a drunk on a bender, on a normal back road ride in 20 miles time. Since it was a stock motor a low mile barn find motor went in it's place in several hours labor.
My thoughts exactly!
I guess it depends how hard you run them. Lotsa' folks out there that know more than I do. The late Dick Russell's engine was 700cc with a Shell cam from Hoos Racing and a lot of Cylinder head work done to it. Dick told me that he had that bike up to 118 MPH and still had throttle left and could outrun 750's. One thing that I'll recommend to you is bite the bullet and put Carrillo rod's in it if you're gonna' be running it hard.
Rode that bike a couple times, nice runner. Motor had lots of pep.
Lucky you! I'm kinda' going that route on my tracker project, minus the high dollar head work (maybe later). I still may go 750, but I'm not sure it's worth the extra $$$. I'll consult Gary Hoos before I pull that trigger.
What is the journal size and overall length? And is it possible to adapt it to pressure oiling, or is it splash grooves oiling only? I have a friend who is with Morel which is a division of Carillo who makes H-beams for about every thing., I have a set of 6.7 for an FE with a 2.2,journal with the correct fillet radius for the FE. All it would take is the correct length and wrist pin and grooving the scuppers to carry oil. With the roller bearings do they have dowels or are they press fit? Would the 533 design work better?
My big question with that kit is who makes the pistons? With Hoos' 700 kit it's JE, a company I've dealt with and have had no issues. Not to denigrate anyone's product, but in the 80's, I switched piston brands on my Formula Vee with disasterous results (hole's in pistons). I'll look into 650Central's kit and see who manufactures the pistons. Thanks.
I'm the wrong person to ask. I can assemble an engine, but I'm not an "engine builder". Hopefully one of our more engine tech savvy members will chime in and be of help to you. I will give you one piece of advice though, be patient. A job well planned is half finished before you start.
Also check out 650 central on the 750 kit. Heidens was not shipping stateside awhile back. Also, I would give strong consideration to Hoos Racing. It's less expensive to keep it a 360, that's not to say there's anything wrong with a rephase either. Hoos also rephases. Check out his website. You are wise to let a full time engine guy take on a job of this magnitude. You can't beat a man at his own trade.I like the suggestions here, 10 years ago I would have tackled this but I think that the case at least needs to go to Hugh’s to be lightened and balanced at 277/83 with 750 ccs and maybe even the block. Is the Hieden block good? They claim adequate cooling for a 750 from deeper thickness and fins. At 9.25:1 with a rephrase XS2 duplicate grind, it should have the grunt. Maybe we’ll get a sidecar so my son or wife can run me around,
