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ys91 engine help - 1/13/2003 10:57:16 AM   
reefguy


 

Posts: 20
Joined: 1/10/2003
From: palmdale, CA, USA
Status: offline 		hello, i just bought a used heli with ys f-91ac, does anyone have this particular engine or know the engine very well?
       Post #: 1

ys91 engine help - 1/13/2003 7:43:59 PM   
w8ye



Posts: 17490
Joined: 12/11/2001
From: Taylortown, OH, USA
Status: online 		There's a lot said abvout them on the web. Do a search on google. There tuning and set-up tips there too.

Jim

_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....

Club Saito Member #7
Original AMA #31261

(in reply to reefguy)
       Post #: 2

ys91 - 1/13/2003 11:16:40 PM   
reefguy


 

Posts: 20
Joined: 1/10/2003
From: palmdale, CA, USA
Status: offline 		w8, oh i did find the setup, tuning etc.. my question was, this engine needs air chamber, rear of cyclinder(outside), but the previous owner did not have one he lost when he took it off for the muffler somehow damaged he did not say, if looking at it from the rear the right side where muff goes it added a priece of metal like the engine material itself, no holes for the air chamber on the right side, he jb weld on it look cleans but, i rather have it weld with no jb weld compound in the air chamber compartant since it feeds into the same carb unit. do you know if or what kind of weld can be done to the air chamber to the mounting part of engine?

(in reply to reefguy)
       Post #: 3

Say - 1/14/2003 1:11:13 AM   
Hobbsy



Posts: 10683
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: online 		I hope the guy who sold it to you wasn't a friend, because it sounds like you've been had.

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to reefguy)
       Post #: 4

ys91 engine help - 1/14/2003 1:19:47 AM   
w8ye



Posts: 17490
Joined: 12/11/2001
From: Taylortown, OH, USA
Status: online 		You need to remove the prop and slip a new Y - S engine in it's place and use the one you have for a weight to hold your parts on your model until the glue dries.

Good luck,

Jim

_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....

Club Saito Member #7
Original AMA #31261

(in reply to reefguy)
       Post #: 5

ys91 engine help - 1/14/2003 3:27:52 AM   
JWN



Posts: 4909
Joined: 3/26/2002
From: Florence, TX, USA
Status: offline 		Or, contact Dave Shadel at YS Performance and arrange to send the engine back to him for service.

John

(in reply to reefguy)
       Post #: 6

ys 91 - 1/14/2003 5:08:01 AM   
reefguy


 

Posts: 20
Joined: 1/10/2003
From: palmdale, CA, USA
Status: offline 		thanks for your insight guys...

(in reply to reefguy)
       Post #: 7

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