My chop chop

Hi im from Oz and this is my 2 stroke Schwinn in progress... I've done the usual mods including a severe dose of heavy porting.

I got bored so I polished the engine covers to a mirror finish - I reckon this looks much better than the same crappy slotted cnc covers that everybody has.... I also did a little porting and port-matching with the inlet manifold...

I've ordered a aftermarket cnc head as well as a 4 litre fuel tank that should arrive very soon... I'm gonna give the head a skim to raise the compression slightly just to give it shooting match a little more oomph... let's see what happens aye... lol

Check it out

 

[Chop-chop]

The new cnc head has arrived and I'm considering pulling the engine down again to port-match the top and bottom halves of the transfer ports properly.... and perhaps at the same time getting the piston down to my mates shop that does ceramic coating and get the piston coated ...

 

[Chop-chop]

The new head installed

 

[Chainlube]

The new head installed

What's happening with your intake manifold? Looks like it's upside down. For the float to operate properly the carb should be level as possible.

 

[DAMIEN1307]

What's happening with your intake manifold? Looks like it's upside down. For the float to operate properly the carb should be level as possible.

YEP...At that extreme angle, its either going to be running way too rich or flood out completely...Remember, its a gravity feed fuel system, not a fuel pump system...the angle matters...DAMIEN

 

[Chop-chop]

What's happening with your intake manifold? Looks like it's upside down. For the float to operate properly the carb should be level as possible.

No the manifold is not upside down, I cut the kinked section off to improve the intake path. I have already checked the float operation when I originally did this and it functions fine. Having said that, this is all making way for a new reed setup that's on it's way so it's no big deal

 

[Chop-chop]

Got a couple tensioners to play with.
I don't like the way these are setup so I'm gonna see if they can be improved.

I've got a pretty neat unit of a CNC clutch plate from RDM on it's way in the post. I've got a ceramic clutch plate sitting in the back shed that originally came out of my 600+ whp Skyline from when I upgraded to a twin plate setup - as there's still plenty of 'meat' left, I'm going to drill the rivets out to disassemble it and use the ceramic lining material to make my own clutch plates for the 2-stroke. I'm planning to source a (much) stronger main clutch spring to suit... perhaps looking at various valve springs out of car engines.

This all seems to be a bit of a over-kill for a ported 2 stroke, but keep in mind it's driven by a relatively small 20" wheel and I'm running a 32 tooth at the rear for top end speed and i do sometimes feel a little slip during take-off and that irritates the sh*t outta me lol... I've also got a even smaller 30 tooth sitting here I have yet to test out.... but I'm not doing that until I do the clutch. I love my top end and there's a price to pay for everything we love

 

[Chop-chop]

Got one of these on it's way....

 

[Chop-chop]

Just finished fitting the spring-loaded chain tensioner at the engine and it runs so much smoother as it's reduced a lot of the chain lashing at higher rpm

 

[Chop-chop]

I fitted a thicker 1.5mm base gasket a couple of weeks ago during reassembly after porting and port-matching the jug to improve timing for better bottom-end torque, but as this would've increased cylinder volume and hence reduced compression, to compensate - I'd just made a thinner 0.5mm head gasket (on the left) compared to the stock 1.0mm on the right. Will be installing it tomorrow to see how she'd go....