Hyway 461 cylinder swap

[SixGun]

Swapped out a 461 cylinder with a new Hyway kit.
Old cylinder was perfect inside but customer failed at installing a thread insert and reemed it out badly.
I promised Randy I would do a thread so I took a bunch of pics while doing the swap .
Nothing special but everyone loves pics.

 

[angelo c]

is that a different bore for the P&C or will the jugs swap ?

 

[SixGun]

Bore measured exactly the same, I left the OEM piston.
I didn't check timing as I am in the process of moving my shop and things are crazy

 

[SixGun]

Piston before cleaning After cleaning First I carefully scraped heavy carbon from piston with a razor blade, then I use PB Blaster on a scotch bright pad to polish off the staining, Do this with the saw laying on its side so as to not get carbon into the case

 

[angelo c]

Bore measured exactly the same, I left the OEM piston.
I didn't check timing as I am in the process of moving my shop and things are crazy

lemme know if ya need a hand and a truck.

their both old and rusty, but they can fool the sharpest eye into thinking they were worth the beer.

 

[SixGun]

460 cylinder left and 461 on the right Un-ported Ported. Just some comparisons for anyone interested.

 

[SixGun]

lemme know if ya need a hand and a truck.

their both old and rusty, but they can fool the sharpest eye into thinking they were worth the beer.

Thank You for the offer!
I've been doing little by little and making OK progress so far.
I will take you up on that beer sometime though

 

[SixGun]

I I always dribble some mix oil on the bearings before assembly. The Hyway jug has a nice little radius on the bottom and the rings went in easily using the finger nail method.

 

[SixGun]

Also get some oil in the cylinder and a little grease in the intake boot

 

[SixGun]

Nubbin The nubbin in pic #1 is keeping the muffler from seating properly. Lesson learned- Trim Nubbin before installing cylinder.

 

[SixGun]

Stock Nubbin rests against muffler perfectly AM Nubbin needs to be trimmed quite a bit. Glad I didn't keep cranking the muffler screws in. I personally think that this is done on purpose because of Stihl design protection and patent type stuff.

 

[SixGun]

After trimming. Yeah I nicked the exhaust flange a little, it's OK I like to start the 2 bottom screws before tightening the muffler to the head because sometimes the muffler gets tweaked and those holes don't line up perfect.

 

[angelo c]

Did you get squish w/wo gasket ?

 

[SixGun]

OK to summarize:
The new Hyway cylinder is very nice and well built.
The plating and bevels were very nice and casting flash was minimal .
Fitment was good overall except for the nubbin.
Nubbin was an easy fix and muffler bolted up perfect after grinding.
Saw fired up on first pull and tuned well.
I am very happy with this cylinder and would definitely run one on my own saw.

 

[SixGun]

Did you get squish w/wo gasket ?

Meant to and forgot. I will check and post results

 

[SixGun]

Just checked squish with gasket and it's right at .028. Not bad at all
Checked a Stihl gasket and it was .034 so I'm gonna say negative on the gasket delete unless you cut squish or replace gasket with something super thin.

 

[Dieselshawn]

Sixgun: I did a piston and cylinder with a hyway kit for a 440 for a customer.

I gave him options of a Stihl OE kit or the Hyway for half the $$. He chose the Hyway kit. Customer was at the point of getting a new saw if he had to buy the Stihl kit.

Seems to be a decent kit as you've described.

Saw started and tuned easy. Demonstrated to customer, he was pleased and haven't heard back from him in a while. Last I was told the saw is running well.

 

[SixGun]

I'm sure I'll hear about it if there's a problem.
Seem like quality parts and HL has 461 and 661 Hyway kits now.

 

[Mastermind]

Thanks for the thread Paul.

 

[SixGun]

No problem Randy.
Hopefully soon I'll have time to do a cool build thread with some porting and stuff.