What's on your bench?

[WillG]

Mower deck fun...not...used the shop vac to clean off the top so I could see how bad the rot is...it's pretty bad. Gonna bandaid and patch to get me through the mowing season while I look for a replacement deck. Spindles are fine. Idler pulleys are fine as well. Hopefully a patch job, secure the baffle and lift bracket with some angle iron, some paint and a new belt will make her last just a little longer.

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[RI Chevy]

It'll buff right out Will...[emoji1787]

 

[Xr650jkallen]

Got the little 80 tore down, got to clean everything up and then it's all new bearings and seals. Should be good for another 30 years.

 

[Stevetheboatguy]

second time the guy has been in with a wheel mounted like this.



Steven

 

[RI Chevy]

Yikes. He needs bearing buddy caps. Lol

 

[huskihl]

View attachment 246630

second time the guy has been in with a wheel mounted like this.



Steven

Lol. But they look like Nylock nuts...

 

[JTV10]

Had too put a carb kit and general cleaning.

Never worked on one of these before. Nice strong runner when i was done

 

[av8or3]

Highlight of my Sat morning. Saving this very hard to get HS6 after the bellcrank broke off the throttle shaft while I was wrenching it from the saw. That never happened before. It had been kinda repaired before and I finished it off. Anyway, tried some new silver solder we have at work and it stuck, good. Hopefully it will last.

 

[av8or3]

She’s coming along.

 

[Maintenance Chief]

Piston replacement success.
And the original.

 

[merc_man]

Doing a few small thing to the 066. Cant wait for the filter to come in so i can try it.

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[av8or3]

Should run. Chain is soaking.
it’s a purdy little saw.

 

[MustangMike]

Delivered this bench to my Daughter today. It is Red Oak, very stout (even though it needed some work) and will live outdoors with it's Spar Urethane coating. Everything is half round (bench + legs) and it has some character!

 

[MustangMike]

Had 6 unused OEM jugs on my bench today, did some crude measurements, and concluded the following:

Compared a 066 from a round top decomp saw (I ran it briefly on an Asian 660) to a 660 jug. The 066 jug is Stihl and the 660 is Mahle.

The 066 jug had squish of .020 w/o a BG and is 3 + 5/32 deep. The 660 jug is 3 + 3/16 deep, so it will likely have excess squish unless I hit it with a belt sander (Ha, Ha).

The port #s were very close on both jugs (except that I lowered the intake on the 066 a bit), but there is a noticeable difference in the transfers. The 066 jug transfers are smoother, and the lower transfer is wider. That and the tighter squish should make it run better. Both jugs have a lot of room to widen both the Ex and In ports, and I plan to do that before re using one of them.

I plan to put the OEM 066 jug on my OEM 066 saw, and transfer the Cross P+C to my Asian saw. (FYI, this is the saw in the HL Supply video for the Cross 660 jug). I will also port the Cross jug during the transfer.

 

[MustangMike]

I also checked a 046-D Mahle jug, a 460 Mahle jug, a 440 Stihl jug, and a 044 (12 mm straight fin) Stihl jug.

I compared them to a New West BB jug that I had previously checked with a degree wheel. The #s for the NW BB were Ex 100, Tr 120 and In 66.

All 5 jugs have a total depth of 2 + 27/32, so all should have squish of approx. .020 (but I will check each one).

The NW Ex is 31/32 from the squish band. The 044 is a bit higher at 15/16 while the other 3 were all a bit lower at 1", so those 3 should have an Ex numerically a little above 100.

The 440 and 044 seemed to have the Tr at the same height as the NW BB, but the 046-D was a hair higher and the 460 was a hair lower.

Even though the piston pin spacing on the 12 mm 044 is wide, the intake port is noticeably more narrow than the 440 intake port (Stihl widened the intake ports at some point in time resulting in increase Hp ratings). They can both still go wider, and the low hanging fruit (IMO) is to lower the intakes some.

I still have 2 unbuilt Asian 440 kits and plan to use the 440 jug on one of them (with a Meteor piston) and either the 046-D or 460 jug on the other with an OEM piston (I purchased a few of them). Will be interesting to see if I can get them to run better than the NW BB jugs. The upper transfers on the NW jugs are not as wide as the OEM jugs. This could be hurting performance.

 

[MustangMike]

So on all these builds I plan to widen the Ex and lower and widen the Intakes.

Where I get unsure of myself is the transfers. Many of my strongest running saws have bridge ports, but some builders say they are not needed if the transfer ports are done right. The 066 jug has such nice looking transfers I may just try leaving them out on that jug. It ran pretty well the way it was on the Asian platform, and I'm sure the mods to the Ex and In will improve it further.

I'm considering widening the lower transfers on the other jugs to put a little more pressure on the uppers, but that would also increase case capacity, which may not be a good thing.

Comments from anyone with more experience would be appreciated. This will be my first time seriously modding OEM jugs, and I don't want to blow it!

Thanks.

 

[Moparmyway]

 

[MustangMike]

Thanks for the pic Kevin, just wish there was a "before" pic also to get a better perspective of the amount you changed it.

 

[merc_man]

My 271 is on the bench getting some outside spikes. Cant wait to try it out this fall. Hard staring at a new saw all summer and not using it. Havnt even fired it up yet.

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[Mastermind]

Thanks for the pic Kevin, just wish there was a "before" pic also to get a better perspective of the amount you changed it.

Most of the time not nearly as much material removable is needed as most folks think. It's more often a matter of removing material in just the right place, and at times adding some is more helpful.