PISTON PIN PLUGS.
As it turns out, Vortex have been making plugs for their 60 cc MiniRok kart engine for some years. So, if you've got an engine with a 12 mm pin, here's your chance. Approx 15 Euro each from Mondo Karts. Looks like some form of PEEK high temp material and most likely from bar stock.
Begs the question as to whether they do (or could do) a version for their (or any) KZ engine with the usual 15 mm pin. Obviously the dimensional relationship of the circlip groove to the adjacent piston skirt face would have to be maintained.
![]()
"Success is the ability to go from one failure to another with no loss of enthusiasm.”
I ordered a set of these awhile back but never did get them, so I made my own from torlon. I purchased a foot long rod and I have alot of material left-over. I designed them just like Frist's pictures and have had no problems. I used them on a KTM314 motor. Fantastic motor! It was used for GNCC racing here in the states.
Peter
Stroked 3.5mm with a clean-up bore. (72.16mm I think?) And it seems I was mistaken. The cc's only come out to 309cc's. I built a Yamaha engine to arround 314cc's or something like that.
After alot of on line research here is what I believe is the simple/cheap version of a solenoid PJ , as the idiot price original is now NLA..
The tube solenoid just needs a threaded adapter to the much cheaper and still available Mikuni standard PJ kit , and a jet or insert fitted inside the holder that is much bigger than that used in say a Lectron powerjet system.
https://www.summitracing.com/search/...power-jet-kits
https://nz.element14.com/ledex/19520...ous/dp/1331806
Here is a setup I have cobbled together from bits I had in my parts boxes - perfect for Mr Pig if he wants it.
This combined with the lever type TPS ( same as PWK style ) now available on the new Lectron carbs would be the trickest setup.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
Can we get .mov video added to allowable file posting on here ?
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
It worked for me Frits. Firefox and in the US.
Android here, working well.
Don't you look at my accountant.
He's the only one I've got.
Hi all, 1st post on here but what a thread this is, taken a while to read but have a few pages left, brilliant
Re- polini carbs, out of the box they are proper shite and the reason being is that it doesn't have a normal 2 stroke needle shroud, this makes jetting nearly impossible with wot needing bigger jets an richer needles, I have one on my lambretta and had to get the lack of shroud pressed out and a normal one pressed out
I'd get a genuine pwk 33 or 35mm
I have a pwm 38mm on my 28hp vespa polini 130 road scoot and its easy to jet and needle
I tested the Keihins back to back for the SKUSA Stock Honda classes , the PWM is easily the best.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
Strange, I've had little to do with PWM as PWK so ubiquitous esp in dirt circles where we feed a lot of parts from.
Attack of the Clones: I see Aliexpress etc offer PWM things too. Buyer beware in my opinion.
Don't you look at my accountant.
He's the only one I've got.
There are currently 26 users browsing this thread. (0 members and 26 guests)
Bookmarks