Port work

[joehylton1980]

I'm thinkin of buyin a cheap engine an trying to smooth ports an do on has anyone tried to do this there selves an had any decent results ??

 

[DougStar]

Please go here and introduce yourself https://www.largescaleforums.com/forums/introduce-yourself/

 

[Seandonato73]

Yes, and no,no,no,no then finally yes. It's an art form you figure out as you go. There are several good articles about porting principals of a loop scavenged 2 stroke. Google and read them.
You'll mess more up then succeed on at first so don't get discouraged. Get a degree wheel, your going to need it for timing numbers.
Learn to measure squish, shoot for .020" or so. Can go down a little tighter but I'd not reccomend if your new to the game.
Don't Freeport your exhaust. (Kevin will be along to tell you the opposite, don't mind him)
Make sure to chamfer your port edges so you don't catch a ring, and don't go too wide on your ports so you don't catch a ring.
There's a lot you can do, but if you want to see if your modifications did any thing positive (or negative) do one thing. The put it together and run it. Either it will be faster or slower. A dyno would be best, but the same engine in the same car set up, timed trials will be telling enough. Copper gaskets are your friend for this type if work.
Keep track of your numbers so you know where you started and where you ended up. No point in doing it, if you can't go back and see where you came from.
Lots of videos of guys porting chainsaws on youboob. They are actually easier to port then these little things as you have larger cylinders to work with.
Oh be prepared to eat a few dremel wands up, no point in buying a foredom if you don't like what your doing or fail at it.
Best of luck.

 

[joehylton1980]

Cheers mate like I say I'm thinkin of giving it a go lol better start readin up on the matter lol

 

[Seandonato73]

It's fun, I enjoy it when I have the time to do it. Just be prepared that you will screw some top ends up before getting it right and your all cherry.

 

[joehylton1980]

Had a dbxl last year an I thought get the big brother an I hear the five t is much better

 

[Seandonato73]

Yes way better, night and day. Had a dbxl for years before I built a 5ive t.

 

[KevTrem]

Where in the world are you based?
I ask as I have a number of dead 29cc King Motor heads your welcome to have to practice on and butcher.

 

[joehylton1980]

I'm in the UK mate

 

[KevTrem]

I'm in the UK mate

Snap, where abouts fella?
just seen your in Birmingham

 

[joehylton1980]

Oh sorted lol I'm in small heath but I'm in Bromsgrove alot I pick the car up next week do u think it's a Rovan ??

 

[KevTrem]

yeah its the lt360 by the looks of it.

https://www.rcmodelz.co.uk/rc-cars/...-cars/rovan-lt360-red-36cc-wlt-4wd-truck.html