the victa form hell

[mattbrown98]

rite i have some photos and a couple crappy videos of the victa that i have modified for my gokart any tips or advise are apreciated

cheers matt

 

[ak99]

Looking good!

Is that a tobacco or shoe polish tin made into an air filter box?
I like it, something different and reinforces the DIY theme.

Are you going to run a clutch or will it be direct drive?
( I noticed the sprocket on the crank)

One tip, those zip starters don't last long without the decompressor fitted. I made a nipple from a 1/4" bolt with a hole drilled through from end to end, then drilled a hole in the inlet manifold, tapped a thread and fitted the bolt with Loctite. The decompressor tube is connected to it - works fine.

Another way: A friend of mine adapted a Honda starter to fit the Victa, used the Honda cup in place of the Victa one and bolted the Honda starter onto the Victa cowling.

 

[mattbrown98]

taboco tin filter box it is with a foam insert haha it looks pree neat hopfully it gets enough air

i am running direct drive so its just doing to be push star haha i like it better without the shroud its got a 020 thou oversized piston i discovered the other day when i went to put a new bore that i had modded on it but it wouldnt fit the top of the piston had 020 just lightly engraved on it

no decomp on this beast haha just easier to bun a spark plug in it thanks for the tip by the way might help future applications haha

cheers matt

 

[mattbrown98]

here is the link to the video on youtube my mate waved his hand infront of the camera to annoy me but the sound is there
sounds better in person though

http://www.youtube.com/watch?v=r_xGfUnqEC8

cheers matt

 

[OzFab]

Dude, that sounds awesome, good work

 

[ak99]

Ahh, that sweet sound of a Victa...

Well done!

 

[sideways]

ahh, that sweet sound of a victa...

WAT DID YOU SAY?!

 

[ak99]

 

[mattbrown98]

haha thanks guys i apreciate your comments more work to be done yet haha when it runs it has a patch werr it revs real hard but sounds like its leaning out.

i might do a run and check the plug but what colour should it be ?

might get a set of jewlers drills that go up in 0.05mm steps and re jet the carb got theree spares so im not to worried bout fluffing it up haha.

cheers matt

 

[mattbrown98]

some photos of the new exhaust for the engine we cut down an old expasion chamber cause it didnt sound good so we turned it in to a megaphone made a flange to bolt it on to the block works good as

 

[mattbrown98]

link to the new video guys with the mega phone exhausthttps://www.youtube.com/watch?v=dc0mT1BnNdo

 

[mattbrown98]

havent been on for a while the crank case halves leak need to be lapped with some wet and dry brought a tacko for it sits on 5500 rpm wit the origonal ignition havnt been modding it lately been caught up working on my car

 

[DMCdesign]

DOOD, THATS AWESOME!

love the sound after the expansion chamber was bolted on....

now, how about a turbocharger?

 

[Desertduler]

Cool,
A two cycle engine benefits in a big way by using the correct tuned piped designed for the particular port timing and port shapes and length of the exhaust port.If one of you guys would bolt up a degree wheel to one of those engines and measure the exhaust and transfer port duration and exhaust port shape and exhaust port length I would print you out what those little engines need as far as a pipe goes to get a ton of more power out of those engines.
The wrong pipe configuration can burn the engine down and not produce the maximum output of what the engine is capable of making.
Here is a sample of a pipe and the correct configuration that it needs to produce a wide power band with one gear ratio and this is a two stroke utility engine.

 

[mattbrown98]

cheers the reverse cone works good for now will get my hands on a degree wheel i know most of the formulas reading the 2 stroke tuners hand book cant wait to get it on my kart

 

[mattbrown98]

DOOD, THATS AWESOME!

love the sound after the expansion chamber was bolted on....

now, how about a turbocharger?

haha turbo charger nahh hook it up to an air bottel straight through the carby wit a reg hold it a 10 psi of boost lol

 

[jman231994]

Thats a pretty sweet sounding victa. Let me know how you go/went rejetting the carb if you do it. One thing I found with the g3 carby is you can bypass the stupid gear part of it by putting in the main shaft off I think a briggs and stratton carb (5hp or so, whatever doesnt have the stupid tank and carb in one thing). The shaft fits nicely and lets you control it without worrying about the gears slipping or anything.

And also, it doesnt seem to lose a lot of performance with the decompressor in and disconnected. A friend and I bodged together a victa powered ride on frame/trike go kart death trap thing one weekend and just left the decompressor there cause it made it heaps easier to roll start it. Amazingly it still started easily, and my friend even said that after it sitting there for 3 months or so it still fired straight up at a light jog as soon as he pulled it out of the shed

 

[ak99]

If you don't have any luck with modifying the G3 carb, grab a PZ27 from ebay.

I used this carb on my 160, you will need to make a manifold which can be easy if you have a friend with a lathe

Carb was about $37 with free postage. It comes with a pod filter which is terrible. I bought a Uni Filter from the local bike shop for $25 - works very well and is washable.

 

[mattbrown98]

i got the g3 sorted wit a direct shaft one of the first things i did havnt been working on it lately my car has been taking up 99% of my time so very little progress has been made

 

[mattbrown98]

pulled the engine apart the other day lapped bothe crank case halves so there wer no gaps and re assembled with some aviation grade liguid gasket paste have started making the new ignition system to try and coax a few thousand more revs outof the old victa if i get it running good i will get a flywheel machiened for it