Today, on this episode of 394xp....

[Lightning Performance]

As requested.

A 13/64" drill bit fits in the hole. It does look a tad bigger than the plastic and roll pin setup....ugh

OEM cases. Nice Matt

 

[Mattyo]

maybe I'm wrong, I dunno. i'll eventually get out to the shed and get my parts pile and see if the plastic vent piece fits. if not, i don't see the harm in putting in a piece of fuel line and roll pin.

 

[Mattyo]

OEM cases. Nice Matt

got the head from Reilly, he says its a copsey ported top end... so now i'm way $$$ deep in this thing. gonna be 1k in parts to build it, but it'll be quite fresh when its done. the head says #223 psi....

 

[Mattyo]

the 2018 ipl says 503668404 ... which is the old one, anyone find a newer IPL?

 

[Mattyo]

@Onan18 sent me this info

old 394 vent tube 501839302
current 395 tube 503668404 .... this is the number from the above post

Thanks Joe

 

[Mattyo]

Btw... @redlight066

Thanks for pointing this out. I wouldn't have figured this out ....until after a lot of screaming. Thanks again

 

[redlight066]

Swedish solution. Lol

 

[srcarr52]

Swedish solution. Lol
View attachment 224047

So it's a thicker tube than the old one?

 

[Mattyo]

sure looks like it. i don't have the old one handy but I'll try to get one, I think they are same as 262xp. pretty sure I have one of those. if not maybe I'll dig into one of my already built units

 

[redlight066]

OK so here’s where were at. The new hose assembly actually feeds thru the case as an interference fit with the same size pin installed on the hose. This is different than the old style because the pin is the interference fit to the case.

 

[redlight066]

Pics didn’t load in order, but you get the idea

 

[redlight066]

Now with that being said the plastic tube is incredibly rigid. List price is $6.99 for the part. I’ll pay that in lieu of trying to jam that pin into the hose with some heat and HOPE I don’t *f-word it up. As seen through the refurbishing of the plastics, I have some patience for a project. This is a simple fix and I’m not going to fight something this small to save a dollar.

 

[qurotro]

I don't really understand this vent.. When cutting with clutch facing up, all bar oil would come out if there's pressure inside .

 

[Mattyo]

The oil tank is under negative pressure though...because theoiler is pulling oil out....creating a vacuum.

 

[redlight066]

Determined to pull the cord today. I got up early this morning and got the case together, seals installed and rechecked timing. I took .045 off the base earlier this week and set the squish to .022 today.
The numbers:
In 79
Tr 124
Ex 103

 

[redlight066]

 

[redlight066]

Before anyone I asks, I keep an old drill bit wrapped in cloth to spin some scotch bright and do a final polish on the cylinder. The bit poked out of the rag and kissed the combustion chamber. No harm done anywhere else. I raised both the transfers and exhaust back to where the original KS engineers had it set. Let’s see how it does there.

 

[Mattyo]

Looks good to me!

 

[Mkinslow]

Before anyone I asks, I keep an old drill bit wrapped in cloth to spin some scotch bright and do a final polish on the cylinder. The bit poked out of the rag and kissed the combustion chamber. No harm done anywhere else. I raised both the transfers and exhaust back to where the original KS engineers had it set. Let’s see how it does there.

Does it add BTU's

Sent from my SM-G892A using Tapatalk

 

[redlight066]

I didn’t take as many pictures as I’d like to. Had a handful of things to tidy up during final assembly. The decomp was bent just enough for it to leak like a sieve. One of the starter Pawls was tweaked a bit. Replaced those as well as the ignition coil wire.