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Luckly those engines are not making enough heat energy to actually do some damage. Another Aussie good stuff Gold Coast here

I don't think the firing order has much to do with it as it's a twin. It may make a difference on a triple. But yeah your right on the crankshaft being the same. Or close to it. The early ones used to be hollow in the back. That was a great stock class cheat to help them get the jump lol

Yes it was done for the b1 and gp. Not needed on the standups. This is pretty much the engine I have going into my fx1. A 760 with stock 44s. Some compression . 61x electrics and enhancer. V force reeds and a protec pipe

The issue with the 760 electrics is it runs one rear cylinder retarded it does this via one of the lumps on the flywheel being retarded. You can machine the small lump of and then index the other lumps in a mill and run a zeeltronic I have done this. It's still a heavy flywheel. You can then...

Did I mention capacity somewhere. I'm not sure where I did that

38s on a limited b-pipe with high compression. Great throttle response. Big carbs , dry pipe big power

The transfers on them are a lot better. They have a decent loop in them which stops the gases having to do massive direction change. A really good cylinder will have an increasing curve like a snail shell. This means as the gases speed up they have less of an arc to negotiate. There just isn't...

Nah your close on it. I believe a lot of people get confused between low down power and throttle response.

All the cool kids run the yamaha platform. I hope you got my email

Dont you know race engines have no bottom end power Scottie

But leaving black lines from the exit of one corner to the entry of the next is great fun

We are in total aggreense ? is that a word. I have long said that big bores are a waste of time on the 62t platform due to it reducing the transfers which are already a weak area in this platform. Stroker is a much better option, when you clock up the angles that the stock yamaha and alot of...

Lets keep things in perspective here shall we. this is not a snowmobile forum and not many two stroke jetskis are running turbos that i know of The comment was about the 62t based engines Tim. Of course twins are capable of 200 just not the 118 bore centres we have with the 62t based platform...

I doubt if any of the big bore twin cylidners are making 200hp, the laws of physics gets in the way. I would not be suprised to see some of the triples above the 200hp mark. Tim would you be building the yamaha pipe to have the out let forward or backwards. The blaster is better backwards and...

I emailed you regarding a pipe. I am from australia and would love to get one of your pipes for my blaster. http://www.pwctoday.com/showthread.php?t=418776

fair enough, I have not seen them other than this pic. Im interested and may have a look at running some in the next build I do. I know they run them in alot of motorbikes now

they look like a wiseco,

Poor man pays twice

And that answer your question as to if it was bent before or after you turned it upsdie down on the bench. You didnt cause the issue

if it was bent it is plausible the flywheel is also not running true. If it was out of true then it will run closer to a pickup on one side and advance the timing. But it really looks like a hydrolock. Can you post a pic of the bore wear please