2 Strokes Down Under

CCR depends on the engine and intended use.

Why on earth would a two stroke need crankcase compression you only need crankcase ............decompression/vaccum/pressure drop by a rising piston. With a large volume it's harder to alter the pressure by any great amount.

If you look inside the most powerful 2 stroke engines ever made , the pistons have no coatings. Coating on the crown will PROMOTE detonation and the coating on the skirt seems to wear off after an hour. Aprilia Corse DLC coated pistons and it lost hp due to not retaining any oil. In essence great se...

(posted in the wrong section copied here) Turbo Cranks. Every year that shit idea gets dragged out for another whip around the www Pyramid reed cages More Yank bullshit Truly shit products the creme de la creme is the plastic levers I got for my trusty TS125 back in the 70's Unbreakable the advert s...

OK I'll kick it off. Turbo Cranks. Every year that shit idea gets dragged out for another whip around the www Pyramid reed cages More Yank bullshit Truly shit products the creme de la creme is the plastic levers I got for my trusty TS125 backin the 70's Unbreakable the advert said that should have r...

well bring forth the discussion, the only good one I can think of is a good collection of things that are complete bullshit and old wives tales that get bandied around year after year.

Next is a shitlist of truly shit products that we got sucked in/almost sucked in by the hype.

What ever the coating is it never lasts for long. My beloved Dellorto's use annodised and chromed slides

I'll be there from friday come and say g'day Jeff

JonW wrote:These were the biggest of the Tygas I could find Lozza, are these the ones you mean?

http://tyga-performance.com/site/produc ... ts_id=2993

Thats them. Like carbon pushie frames they are actualy stiffer but absorb the bumps better.

Case temps are about 80*C. I've had far less failures with poly cages than steel. The rivet heads fall off first.

High case comp only works on old engines with 2 transfers , 4 or more lower case comp works better. When the engine breathes better the pipe can do the work, the more volume in the case the more the pipe has to draw on. Lowest is 1.28:1 on an RSA Aprilia. Recently lowered the CCR on a race bike that...

Thanks for your reply Lozza; it'll be interesting to see how EngMod2T assesses the current port layout (which is basically all Blair) and also what is left to be gained. I may start a thread showing its assessment of the current and proposed layouts. Internal stingers cost hp an effective silencer ...

Hi John Great you read the Pit Lane forum where I manage to squeeze some great info from Frits and Jan I have been putting that into practice for the last 6 or 7 years and it works. One area you haven't addressed is blowdown time/area which defines the output of the engine. Not inlet transfer or exh...

E-go were great when they first started then it all went south in a friggin hurry. I booked a box to be picked up was on the porch for a week , only when they delivered something else did they pick the original item up. You can talk to them and they fudged their way out of damage to an item even tho...

Lozza I think Jon means the pv bore has gone oval in some cases. I just bought a set of barrels that have been welded & re-machined,seems to be a nice job done but as Jools said it would be a bear of a job to get right in setup. But if you guys doing a bulk buy/job lot Im guessing a jig of sort...