jb92563
Joined: 23 Mar 2007
Posts: 314
Location: Southern California
|
 Posted: Tue May 13, 2008 6:17 am Post subject: Damm CHT temps giving me fits |
 |
|
Last weekend it tried fiddling with the Cuyuna UL-202 again
to see about CHT.
Previously the Fan side cylinder was running too hot ~425 where the limit is 400, but the other cylinder was only around 360.
I am using a 310 jet in the 32mm Mikuni
I rotated the carb as one guy suggested and
interestingly now both CHT were about equal and both
got to 435 and climbing when I shut them down to idle
to cool.
Also the EGT went to 1265 so it was over spec by 15 as well.
I could only get 5950 Rpm, where I should get ~6200 static.
I suspect I may have too much prop.
Its 50" x? It is a Ritz prop.
I decided to pull the engine and will give it a
pressure test to see if the seals are OK.
In the mean time I brought out the Cuyuna 430 and am
prepping it to go in the UL-202's place for now.
They are Identical to the UL-202 except for the 7lbs
extra weight and a single 28mm carb.
If it works out I may go to dual carbs for more power.
I hear some were getting near 40 hp from a dual carb
430.
I'll compare it with the other engines performance to see how it compares.
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kolb-List |
|
_________________
Ray
Kolb UltraStar (Cuyuna UL-202)
Moni MotorGlider
Schreder HP-11 Glider
Grob 109 Motorglider
Do Not Archive |
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
