I figured it was time to rip my Laguna apart. It’s a Piston Port Derbi with Metra Crank, Gila, Tm24, and Weekends Pipe. It gets the job done, was able to top it out close to 70 but it ran out of gear. Running 24×24 right now (stock is 19×31), kinda hard to get more gear on it. 26 on the front is possible though, but I figured I would rip it apart and see how much better I could make it this time around.
Super clean even burning cost on the piston, wiped right off. I swear by Lucas Oil, stuff is great.
Had to take out the motor to get the cylinder off since the fins are so large. Everything looks great in there, so I wiped out the porting tools and went to town.
One thing I noticed was the reeds were wearing a bit odd, since one side of the reeds are able to breathe better they were much weaker then the other side. I made end up adding a plate to raise them up a bit, but for now I just swapped them around for more even wear.
I cut the intake down a bit too since it was a little on the long side. Looks much nicer now.
Still looks like its missing something. What could it be…..
There we go, that was it. Much better now.
Set it to 32 Degrees, and its even more of a rocket out the hole. With points I had around 28 degrees, anything less the bike would not even move. Now with lighter weight on the crank and a few more degrees of timing it is even more of a monster. On our 1/8 mile strip I was able to hit 56 and was still pulling hard. Had to slow down very early too since I have no brakes. I think that’s our new record.