Two stroke theory question

[brian kirby]

Clark, I would prefer to run the 175 top end but I need a piston and the 82-83 175 pistons do no exist anywhere so I am stuck running it as a 125. One possibility is the 175 top end seized on the previous owner, but the cylinder is fine and even the piston is only scuffed. It is possible I could salvage the piston and have it coated somewhere like Swaintech.

I'm not expecting a lot out of the 125, just something I can work with. After riding that MC5 400 in the woods last year I might actually enjoy a ''slow'' bike.

Brian

[SouthRider]

Brian - have you called Stahl's Husqvarna?
aka Forest Stahl
1700 South Nebo Rd. Yorktown, IN 47396. Phone: 765-284-7653

He has no website, and only works by money order. But I have gotten unobtanium from him in the past. I think he must have dozens if not hundreds of parts bikes & motors to scavenge from, plus a large NOS inventory.

I have also emailed Phillip @ Husqvarna-Parts.com - he has been an invaluable resource for me, and is a lot more reliable than some of the other suppliers (he treats it like a business). Will let you know if he comes up with anything.

By the way - what size is the piston?

[tomale]

I have never personally used swaincoat but I have a couple of friends that are Master Mechanics that have used their coating for years and they really like it... works good

Thom Green,Still crazy after all these years!
76' 250 MC5 (orginal owner)
74'250 hare scrambler (project)
74' 1/2 440 maico
78' 440 maico
72' cr125 Husky (project)
74' TM125 suzuki
93' RMx 250 suzuki

[brian kirby]

Clark, I have already contacted Larry Stahl, Forests Son, and every other one of the usual Husky specialists, there are no 82-83 175 pistons anywhere. My Uncle called John Lefever who keeps a database of piston part numbers, he gave him the piston I need and Lefever said "I dont have one, and in all the time I have been doing vintage Husky stuff, no one has ever asked for that piston." They only had the 175 kit in 82 and the 175 bike in 83 but they hardly sold any of either. The standard size piston for the 175 is 64.75.

Brian

[Bob Bean]

Brian,

Do you know if the older 175 piston would work ?
I will check with my dad and see if he had any for his old 175.

Also, there is a guy that will make pistons for any bike.

Tony Williams had him make some for his 75 KX 400 after trying
to find some for years.

Bob

1986 ISDE Italy
1987 ISDE Poland
1989 ISDE Germany

1973 Jackpiner 175
1974 Penton 250 Harescrambler
1976 Husky 250CR
1985 Husky 400WRX
1985 Husky 400WR

[brian kirby]

Bob, the piston for the 72-74 175 kit is the same with no reed window in it, the '76 175 has a totally different bore and stroke so it wont work.

Brian

[gooddirt]

Try LA Sleeve , they have new and old inventory .

Would my 1979 125 cr husky have a slot on the intake side of piston no one knows for sure who I have talked to.

[brian kirby]

Yes, your '79 should have a oval whole in the intake side. All of the Husky 125 pistons are basically the same from 76-up, with the 82-83 having two holes instead of one, but otherwise are the same.

How does your '79 CR run? There is a compete, but in separate auctions, '79 CR 125 top end including reed valve on eBay I am considering.

Brian

[gooddirt]

The pistons on E- bay as of now show up to 76-78 have a reed slot and a 79 piston kit E-bay #360334179046 that sold did not have one;  I asked the seller if it had a slot he said no.  The piston in my 79 is not sloted anywhere but someone could have run the wrong one? The bike ran good a few times up the street but the motoplat dumped.

[Bob Bean]

Brian,
  Dad dropped off 3 box's of old husky parts at the shop late today. I will try and go thru them tomorrow and see what is in there.
I saw a bunch of 360-390 Auto parts and a few bigger pistons,
but had to leave before checking the other box's.

Bob

1986 ISDE Italy
1987 ISDE Poland
1989 ISDE Germany

1973 Jackpiner 175
1974 Penton 250 Harescrambler
1976 Husky 250CR
1985 Husky 400WRX
1985 Husky 400WR

[SouthRider]

You know - Stan Beni's last Husky was a mid 70's 175 for Gary Woodling. I don't know if he used a piston for that project, or if Stan had any in his stock.

Does anyone know where Stan's parts stock ended up? Does his family still have it? I seem to remember that some of the Vinduro group were helping the family to get bikes to their rightful owners after Stan passed.

[Bob Bean]

Brian,
No luck. No 175 pistons in the boxs. Several big bores and a couple 250's.  

 What is the wristpin diam. ?

I know KTM has a 200 piston that is 65mm ?

Perhaps change bore size to use a piston from another brand ?

I will also check with Tony W. and get the contact info for the guy that makes custom pistons for you.

Bob

1986 ISDE Italy
1987 ISDE Poland
1989 ISDE Germany

1973 Jackpiner 175
1974 Penton 250 Harescrambler
1976 Husky 250CR
1985 Husky 400WRX
1985 Husky 400WR

[brian kirby]

Clark, the 76 Husky 175 piston wont work, its a 62x54 bore and stroke, the 82-83 is 64.75x52.

Bob, the wrist pin is 15mm just like all Penton/Sach/KTM 125s up to now, unfortunately the KTM 200 went up to a 16mm pin. The Yamaha RT180 piston looks like it would work too, but it is also a 16mm pin.

Brian

[Bob Bean]

Brian,

The company that makes custom pistons is called Diamond pistons.  Tony is at work and didnt have the number for them, but can get it tonight.

The only thing is, you have to get 4 pistons made....
They will make them in 2 sizes.

They run about $100 each.


I ran into a company that made custom pistons 1 at a time last fall.
I think they were about $150 each.  
It was on either Vinduro or Husky Cafe I think...?
I tried a quick search but didnt find the link yet.
Darn work, keeps interfering ! <G>

Bob


1986 ISDE Italy
1987 ISDE Poland
1989 ISDE Germany

1973 Jackpiner 175
1974 Penton 250 Harescrambler
1976 Husky 250CR
1985 Husky 400WRX
1985 Husky 400WR

[Speedy]

quote:Originally posted by brian kirby

Clark, the 76 Husky 175 piston wont work, its a 62x54 bore and stroke, the 82-83 is 64.75x52.

Bob, the wrist pin is 15mm just like all Penton/Sach/KTM 125s up to now, unfortunately the KTM 200 went up to a 16mm pin. The Yamaha RT180 piston looks like it would work too, but it is also a 16mm pin.

Brian

Hello Brian.
A friend of mine used to be the Canadian Husky Importer for years.He sponsord a ISDT team on Huskys.We needed 3 differend class categories and he chosed one bike a 125.
For almost a year,even with help from the factory they tried to get the 125 Husky running good enough to make it trough the ISDT.They finally quit trying and took a big bore instett.
They kept trying to finish the 125 anyway,but finally he gave up and never ordered any 125 cc Husky,s.The once he had sold had more trouble than a human could stand for.I remember that in a few cases he had to take the bikes back and there was trouble with Husky Sweden because of this models.