Snopczynski

Yeah, when I had stock carbs in my old JD Racing bike, I ran a 390 main jet in it (but it was mixed at 40:1). If it is popping, it is lean (assuming youe electrical is in order). Do a plug chop if you cant read the plugs.

you can run about 6 degrees of timing and 130 psi compression on 92 octane fuel.

Whats the compression?

20cc dome is more than safe, that will put you around 155psi. Thats ok on 93 octane. Just make sure you verify it with a compression test. If you absolutely want to remain safe, just make sure its no more than 165 psi compression.

Ummmm, noooooo! Tim the owner of cascade is a long time aquintance of mine. He is a very honest and straight shooting guy. One tell tale sign of this is the fact that cascade has been around since the early 90's. He told me they quit selling the hush kit about 4-5 years ago after several stroker motors bit the dust when it was installed on the bike. He also told me he would make silencers for this guys bike for $425, or send me the materials and cans to do it myself for $270 (cause the bike has cut T3's on it). I talked to the tech KID at toomey also. I could tell he hasn't been in the tech dept all that long. When I asked him about the hush kit on a stroker motor, he didn't sound 100% sure of his answer. He also used phrases like, "I haven't heard that", and "not to my knowledge". So, best bet is to ask here and see if anyone has used a hush kit on a stroker.

Anyone heard of the toomey hush kit causing a stroker motor, or adverse effects on a stroker motor when put on? I got a guy who wants to get one, but the owner of cascade told me they thought those hush kits were responsible for blowing up some mini strokers they had built.

The Banshee is a YFZ. :biggrin: I love being a smart ass.

I should email him a picture of mine and let him know I only have $3500 invested.

Ok, you got kind of weird thing going here. Inherently the cubs will lose bottom end power when bolted on, but gain a huge amount of top end power. So the way I see it, is your kind of screwed here. You bolt on the cubs and run cpi's, you have a top end rocket thats not trail or dirt happy at all. Or, if you port the bike for bottom end, then the cpi is not an optimal pipe to run with it. See, what I am trying to convey here.

most of the time those cubs wont make any bottom end unless they are ported for it. So, chances are if its ported to be a top end motor, it isn't going to matter what pipes you bolt on it, it wont make a lot of bottom end power. We just went through the same thing with my friends dad's motor. For some reason he though bolting on a set of pt low-mid pipes was gonna fix it all. In the end, the motor had to be resleeved and reported for more botttom end power.

6 point box end wrench.

Are you planning to ride this thing mostly on dirt?

What size tires and what gearing? Possibly try a richer main jet, if that yields no results than richen up the needle. Thats assuming the gearing isn't too tall.

Is it ported? Stroker?

let me get this straight, you rebuilt only one cylinder! Is it the same bore size? Same piston? Same base gaskets? The compression is going to be one of the basics you need to check. Its always spark, fuel, air, and mechanical integrity that you need for an engine to run properly.

Ummmm, well you should sort of figure it out before you put it on. If its going on a ported bike or a stock bike, a 38mm carb is gonna be in my opinion too big. You also need to jet it first, strokers will usually run a little leaner than a ported bike.

Pat's small engine link

whats the compression in both cylinders?

The crankensteins and the triples dont do too well with vibration.

I like everything about mine, dont dislike anything. What carb did you get for it?

Cascade makes a super hush silencer for the pt mid pipes.

The carb slides seem to be the latest trend with everyone.

Which engines are they??? 587, 657, 717, 787, 951? The rotax top ends that the crankensteins use are ski doo top ends. They inherently make more hp than a seadoo does. I personally think using a set of seadoo cylinders is a huge waste of time and money. A 580 ski doo engine makes 110hp, a 587 seadoo makes like 60hp. Its not just as simple as getting the cylinders. You got to machine and weld the cases, then cut and graft the intakes on the cylinders.

Rotax bikes dont run a tranny, they use the cvt clutch that comes on the sled motor.

pwk 28mm, or mikuni tm 28mm.