Might anyone be of help in my search for a decent pipe for my 79 KTM 250MC restoration. The factory original pipe that came on the bike has numerous patches and dents that may not make it a good canidate for repair. I've had correspondence with the fella at Circle F about their pipe, which is a beautiful work of art, and may go that route if no other oppurtunity presents itself.
Bob,
What is the going rate for the Circle F pipe for a 1979-80 250 KTM? Do you have their contact information as well? I might be interested in getting one for my 1980, which uses the same pipe. I have 2 of the 1979-80 250 pipes, but both are dented up in the headpipe area, and I need both unless I get one of Circle F's Thanks, Mike
Michael R. Winter
1974 250 Harescrambler
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM
Michael,
Here is the web site for Circle F. Kevin is a great guy.
http://www.circlefexhaust.com/
Ron Carbaugh
Mike,
Kevin with Circle F quoted me $230.00 for pipe with silencer + shipping, which in my case is $30.00. Ask him to email to you the pictures he has on this pipe. It is a work of craftsmanship. Let me know what you think, maybe we can get a little discount for a group order.
Bob,
I sent them an email early this morning requesting price and availability for an exhaust pipe and silencer for my 1980 250 KTM and also my 1977 250 MC5 Penton, but haven't heard back yet. That sounds like a good deal including the silencer, as I haven't found a silencer for either of my 1979-80 pipes yet and I have been looking for 2 years for the correct one.
Michael R. Winter
1974 250 Harescrambler
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM
I asked Bob Seymour to send me the photo's he had received from Circle-F in Houston and agreed to upload them. Without further delay....
Phil
(http://home.comcast.net/~nstringer100/images/ktmpipe1.jpg)
(http://home.comcast.net/~nstringer100/images/ktmpipe2.jpg)
(http://home.comcast.net/~nstringer100/images/ktmpipe3.jpg)
That looks great, is it available now?
Dennis Jones
Kevin says the lead time is 4 weeks and since the bike pictured is a late 1980 or 1981 small fin engine, there is some question as to whether the 1979-early 1980 250 large fin engines have enough clearance without trimming some fins. Kevin was going to check on a bike to test it on and if I go this route, I have offered to send a 1979-80 stock pipe for comparison if Kevin could use it for referrence.
Michael R. Winter
1974 250 Harescrambler
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM
AHHHH-mazing, how the Penton Network worx, blind faith, in some other immortal words, thanks for the a-mazing grace! Pipe dreams? Something that we always wanted...[^]...tkxs again Tom Brosius
This is a really great resource to have. My '81 250 split the pipe in the fat part of the chamber within weeks of purchase (new.) Fortunately, KTM came through with a new one, but I've always worried about it since. One less vintage worry!
i have some 250 79/80 pipes in top shape( ideal for resto projects) on stock, also a brandnew one. if interests are around, write to
[email protected]The remade pipe looks very good,and would surly bring some more power,,but for resto projects seems oversigned.there is nothing like a original pipe! just my 50 cent on that.....
Dr.2stroke
Just FYI, I e-mailed Kevin with an inquiry re: a replacement pipe with a spark-arrested silencer for my '75 250 and he responded that while he doesn't currently produce such an animal, he likely would be in the "near future". Perhaps a few more similar inquiries from the group would inspire him. ;)
Keithuu
Keithuu,
Tom Brosius sent me Pics of the pipes that Andy at Ace pipes makes for the earlier models. His contact information is on the Suppliers page.
As another note: I was told that a 1978 250 MC5 torque pipe can be made to fit my 77 MC5 250 so, I am interested in buying a 78 250 pipe and have a 78 400 pipe for sale or trade. It has a large dent and some smaller ones in the headpipe area, but could be repaired. The pipe is good and solid otherwise.
[email protected]Michael R. Winter
1974 250 Harescrambler
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM
Michael,
A 79 or 80 pipe will also work on your MC5. I have a 79 pipe on my 77 GS6, the front mount bolted right up and it is easy to fabricate a new rear mount. The bad part is these pipes are very hard find and don't seem to hold up as well as CMF framed pipes did.The Circle F pipe pictured in this thread is a copy of those pipes. This pipe should also work on your MC5, it sounds like they are checking to see if it will clear the taller head fins.
Dennis Jones
That would be great, because if Kevin finds out it will clear the larger finned engines, I will buy one of these pipes and use it on the 77 MC5 frame. I took my lower end to Gary Ellis yesterday to assemble when he has the time, and I'm using the large fin early 1980 cylinder/head configuration and 1979 cases for this engine. Next thing on the agenda will be a Lectron carb for this setup. Thanks for the input!
Michael R. Winter
1974 250 Harescrambler
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM
Michael,
I have a couple of '79 heads that were cut down to allow a later pipe to fit. Let me know if you want to try one of them and I'll give it to Gary this weekend. GO PENTON!
Dave
For the application that I am building this engine for I need all of the cooling fins I can get; I know this isn't the typical Penton bike, but I'm building my 77 MC5 250 project into a drag bike for bracket racing. Consistent engine temperature is the key to success in bracket racing and the early 1980 KTM 250 engine with hopefully one of Kevins pipes and a 38mm Lectron carb may just be the ticket. I have enough other trail/MX bikes for now, and on this particular project I am in the experimental stage, and with the 2" longer swingarm that Bob Seymour is sending me and the 38mm Marzocchi forks that I can lower the gound clearance with I should have fun with it to say the least. I chose the 77 Penton because being the last year Penton, I want to get the Penton name out there in an area where no one would expect to see it.
Michael R. Winter
1974 250 Harescrambler
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM
I test fitted the 79-81 250 torque pipe, and my 1978 MC5 250 pipe on the 77 MC5 Project bike today. Both of them will fit the 77 MC5 chassis and exhaust flange with an minor alteration to the front frame mounting tab on the 1979-81 pipe, and the addition of a mid section exhaust pipe mounting tab on either pipe. I think the later version is the way to go because of the removeable silencer for the bikes primary racing purpose. I haven't heard anything from Kevin about whether the Circle F pipe he designed will clear the larger engine fins, but if it does, that means it should fit the 77 MC5 250 bikes as well. I will eventually go that route once all of the details are worked out and the bike is completely together and ready to race. Mike
Michael R. Winter
1974 250 Harescrambler
1975 250 HS Project
1977 250 MC5 Project
1978 250 MX6
1979 250 KTM Project
1980 250 MX KTM