914 turbo rpm.

by Richard Pingert in General Tech Discussion 9 years ago

Morning Roger have a issue with rpm getting to 5800 with an airmasterpropeller constant speed when I push throttle to 100% I get 35 in,, of manifold and approx 5000rpm then full 115% get 39 to 40" of manifold at 53to 5400 rpm in fine pitch
This just started after a month of no flying all was working great before?.
Any thoughts on this issue
Regards Rick Pingert

Re: 914 turbo rpm.

by Roger Lee » 9 years ago

Roger Lee

131 5.38k 5.44k

Hi Richard,

I may have to defer this more towards Rob. He is better at 914 troubleshooting. He deals with them all the time.
Two things.
Is the waste gate functioning properly and is the turbo clean and adjusted?

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Report
Re: 914 turbo rpm.

by Richard Pingert » 9 years ago

Richard Pingert

5 8 0

Yes have it. Set up and adjust to the book instructions ! Have reset the bowl support pins the floats were rubbing and now am getting the proper rpm

Report
Re: 914 turbo rpm.

by Rob Seaton » 9 years ago

Rob Seaton

3 1.32k 251

Hi Rick,
If you had to bend the float bowl pins then is sounds like the nut was over tightened causing the bowl to bend. The torque is only 49 in lbs.
see attached.
Rob

floatbowlovertorque2.pdf (You do not have access to download this file.)

Report
Re: 914 turbo rpm.

by Richard Pingert » 9 years ago

Richard Pingert

5 8 0

Thanks Rob I straighten the pins level and retorqued to 49" inch lbs and did the trick alls working well thanks Rob
Regards Rick

Report

You do not have permissions to reply to this topic.

Title	Category	Replies
RPM 914turbo	912 / 914 Technical Questions	3
914 TCU Computer What Connectors?	912 / 914 Technical Questions	1
914 Fluctuating pressures	912 / 914 Technical Questions	5
Turbo charger Lag	912 / 914 Technical Questions	3
914 doesn't go above 4500RPMs! Help needed!	912 / 914 Technical Questions	10