ST 3250 problem
09-09-2002 | 05:01 PM
#1
Thread Starter
Member
My Feedback: (5)
Joined: Jan 2002
Posts: 46
Likes: 0
Received 0 Likes
on
0 Posts
From: Littleton, CO
ST 3250 problem
I was just told by a very ST knowledgeable engine guy that ALL 3250 engines have a problem with the piston ring not having sufficient end gap thus causing overheating, flameout and deadsticks. Fix is to remove ring and grind off about .040
Can you comment on this before I put my new P51 in the air.
Regards, Dick L.
Can you comment on this before I put my new P51 in the air.
Regards, Dick L.
09-09-2002 | 05:08 PM
#2
My Feedback: (11)
ST 3250 problem
Dick,
Some of the very early SuperTigre S3250 engines had a problem where the piston had been made with the wrong aluminum alloy. This caused the piston to expand too much when the engine warmed up. SuperTigre caught this problem after the first production run. Later runs had the correct piston.
There never was a problem with the piston rings, and all of the engines that had the wrong pistong didn't have problems. Only the ones that had pistons on the large side of the production tolerances.
Just break in your engine as recommended, and you should be fine.
We hope you find this information helpful. Should you have any further questions or concerns, please do not hesitate to contact us at this email address. (Please be sure to copy all previous emails into any future questions.)
DID YOU KNOW that our web pages now all contain FAQs? (Frequently asked questions) Please drop by and take a look! We hope you'll find the information helpful and valuable to you.
Sincerely,
Bill Baxter, Manager
Hobby Services
1610 Interstate Dr.
Champaign, IL 61822
USA
Phone: 217 398-0007
Fax: 217 398-7721
Email: [email protected]
Web: http://www.bestrc.com
Some of the very early SuperTigre S3250 engines had a problem where the piston had been made with the wrong aluminum alloy. This caused the piston to expand too much when the engine warmed up. SuperTigre caught this problem after the first production run. Later runs had the correct piston.
There never was a problem with the piston rings, and all of the engines that had the wrong pistong didn't have problems. Only the ones that had pistons on the large side of the production tolerances.
Just break in your engine as recommended, and you should be fine.
We hope you find this information helpful. Should you have any further questions or concerns, please do not hesitate to contact us at this email address. (Please be sure to copy all previous emails into any future questions.)
DID YOU KNOW that our web pages now all contain FAQs? (Frequently asked questions) Please drop by and take a look! We hope you'll find the information helpful and valuable to you.
Sincerely,
Bill Baxter, Manager
Hobby Services
1610 Interstate Dr.
Champaign, IL 61822
USA
Phone: 217 398-0007
Fax: 217 398-7721
Email: [email protected]
Web: http://www.bestrc.com
