X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 21 Jun 2012 13:07:35 -0400 Message-ID: X-Original-Return-Path: Received: from nm1.bullet.mail.bf1.yahoo.com ([98.139.212.160] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with SMTP id 5610823 for lml@lancaironline.net; Thu, 21 Jun 2012 00:57:08 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.212.160; envelope-from=loantracy@sbcglobal.net Received: from [98.139.212.144] by nm1.bullet.mail.bf1.yahoo.com with NNFMP; 21 Jun 2012 04:56:33 -0000 Received: from [98.139.213.10] by tm1.bullet.mail.bf1.yahoo.com with NNFMP; 21 Jun 2012 04:56:33 -0000 Received: from [127.0.0.1] by smtp110.mail.bf1.yahoo.com with NNFMP; 21 Jun 2012 04:56:33 -0000 X-Yahoo-Newman-Id: 279948.39645.bm@smtp110.mail.bf1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: MehFP80VM1kTufli_n8V_4HbRIfl4ZBhLVqcvHEY..uJjZn K.Pk2E33K1AbIClOeQrlua3fKg1Yb5Pvc.s5YM6U6U4u7MF_0rqw0wamVBc1 BmMoS0CeBRtLDxjr7KDgxug4xLNmswg4LSsNkZfWRuakIarQFacLEDSqJ5zu 29A7Aj5G.weRPt7RV.wFkDA_B7_Xiv9wDdfK2rIbLrFLqdjp0QZ64dpvk172 1eYirJl7pM.ljY9IknG69niy7it8gOeTbKceVuLIxkUaGnre6EGfbpXdinKE sNqcYDsW6wD.Rek1plvb6e0nLbfkcoz9GTgoZCqt.EBgPbYLKj_OoJHZdkjf PIcJlDFbutBMTzdXZnrMz69iTqusA8upoE6KhsxJ8zygHCeeIn3zuO_8NQEA eK1UagR6gbxiL_rYGgV0PzXZ49O6a0fnleHM0X.H5pX0h9yLPk8rqGJ9Vec_ 47sqozjTzVlM03cd18O7PG0DC5bXbKIyLegL_x7FlXSheOrbP74GTRCUQ6vu 1ma.V.T6vNiePKVX3b9hg152e.6W5AYNkGhEC.zS2P.r3yBQM.1PB X-Yahoo-SMTP: LN43WayswBDMCJzZGaCEPUD2CdoSRuZ0PBcoiPUOut_8JSgD Received: from [10.0.1.19] (loantracy@99.137.239.141 with plain) by smtp110.mail.bf1.yahoo.com with SMTP; 20 Jun 2012 21:56:32 -0700 PDT From: Jeff Pelletier Mime-Version: 1.0 (Apple Message framework v1278) Content-Type: multipart/alternative; boundary="Apple-Mail=_2D8A3E09-47D8-442A-87F2-B210BA932477" Subject: Re: [LML] New TSIO 550-X break in - need suggestions X-Original-Date: Wed, 20 Jun 2012 21:56:31 -0700 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <8653ADF0-8B1B-4EF9-AC4B-E6DA00F7A37B@sbcglobal.net> X-Mailer: Apple Mail (2.1278) --Apple-Mail=_2D8A3E09-47D8-442A-87F2-B210BA932477 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Fuel pressure ia a must go check this out http://www.lancair-iv.com/tsio550Setup.htm Jeff Pelletier loantracy@sbcglobal.net On Jun 20, 2012, at 4:15 PM, Bob Rickard wrote: > IV-P non turbine Fellow Pilots: >=20 > I recently received a rebuilt TSIO-550 from Barrett Precision Aircraft = in Tulsa. Was quoted 9 weeks to overhaul, took 5 1/2 months (but that = is another story). The good news is that the motor is back in the = airplane, and looks and runs fantastic. My problem is, its running hot = inside my airplane. The bottom line is - I am looking for suggestions = on how to solve the problem described below- I have about 600 hours in = my airplane on the previous engine, have taken the GAMI course, and run = LOP cross-country almost exclusively. >=20 > Motor installed and test run. Every effort to try and install exactly = like it left - only exception is spark plug wires installed below the = air tubes (they were on top before - I don't know why the mechanic put = them underneath). No problems with Cowl off. =20 > First flight - one pattern only - Max MAP was set too low, low fuel = flow - fixed. > Next flight - 10 minutes - Cylinders 5 and 6 temps run away hot at = 38.5 MAP and 45gph. Must retard throttle to less than 25gph (25ish MAP) = to keep under control. > Third flight - after checking baffling for hours and scratching head = - same deal. Fly for 1 hour full rich at low power settings. Motor = very smooth and happy at low settings, but as soon as throttle pushed = in, cyl's 5 and 6 climb at about 1 degree per second - power always = retarded not to exceed 390 and cool down in the 350-360 range before = trying to push up power again. > Fourth flight - today - a 2.3. Takeoff WOT and full rich. Can't get = above 3000' agl before having to pull power for cal 5 and 6. Pull power = to 25gph/25 MAP/Full rich and slowly climb to 10.5k MSL. Fly there for = a while, cylinders all look great in the 340-350 range. After an hour, = try full power climb, have to stop within 1500' of climb. So then I = leveled out, and set my typical speed cruise LOP mode to try something = different - 34MAP, 2500 RPM, 18-19 gph. Motor is very happy. All EGT's = normal (actually less than previous engine by almost 100 deg), CHT's all = between 340-365. I climb with this setting to 16.5 and cruise for = another hour, no problem. Return to base, set full rich/2700 rpm, and = land normally. At retarded power settings in the pattern, motor stays = cool and happy. >=20 > So what to look at? New motor mounts make the engine sit noticeably = lower in the cowl, and we are checking the rear baffling to make sure = there is a good seal, but would that affect the front 2 cylinders (5 and = 6)? Every other indication (including the other 4 cylinder temps) are = totally normal. Any other suggestions out there to look for? =20 >=20 > Appreciate your experience >=20 >=20 > Bob Rickard >=20 --Apple-Mail=_2D8A3E09-47D8-442A-87F2-B210BA932477 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Fuel = pressure ia a must go check this = out




     Jeff Pelletier
loantracy@sbcglobal.net

On Jun 20, 2012, at 4:15 PM, Bob Rickard wrote:

IV-P non turbine Fellow = Pilots:

I recently received a rebuilt TSIO-550 from = Barrett Precision Aircraft in Tulsa.  Was quoted 9 weeks to = overhaul, took 5 1/2 months (but that is another story).  The good = news is that the motor is back in the airplane, and looks and runs = fantastic.  My problem is, its running hot inside my airplane. =  The bottom line is - I am looking for suggestions on how to solve = the problem described below- I have about 600 hours in my airplane on = the previous engine, have taken the GAMI course, and run LOP = cross-country almost exclusively.

Motor = installed and test run.  Every effort to try and install exactly = like it left - only exception is spark plug wires installed below the = air tubes (they were on top before - I don't know why the mechanic put = them underneath). No problems with Cowl off.  
First = flight - one pattern only - Max MAP was set too low, low fuel flow - = fixed.
Next flight - 10 minutes - Cylinders 5 and 6 temps run = away hot at 38.5 MAP and 45gph.  Must retard throttle to less than = 25gph (25ish MAP) to keep under control.
Third flight  - = after checking baffling for hours and scratching head - same deal. =  Fly for 1 hour full rich at low power settings.  Motor very = smooth and happy at low settings, but as soon as throttle pushed in, = cyl's 5 and 6 climb at about 1 degree per second - power always retarded = not to exceed 390 and cool down in the 350-360 range before trying to = push up power again.
Fourth flight - today - a 2.3. =  Takeoff WOT and full rich.  Can't get above 3000' agl before = having to pull power for cal 5 and 6.  Pull power to 25gph/25 = MAP/Full rich and slowly climb to 10.5k MSL.  Fly there for a = while, cylinders all look great in the 340-350 range.  After an = hour, try full power climb, have to stop within 1500' of climb.  So = then I leveled out, and set my typical speed cruise LOP mode to try = something different - 34MAP, 2500 RPM, 18-19 gph.  Motor is very = happy.  All EGT's normal (actually less than previous engine by = almost 100 deg), CHT's all between 340-365.  I climb with this = setting to 16.5 and cruise for another hour, no problem.  Return to = base, set full rich/2700 rpm, and land normally.  At retarded power = settings in the pattern, motor stays cool and = happy.

So what to look at?  New motor = mounts make the engine sit noticeably lower in the cowl, and we are = checking the rear baffling to make sure there is a good seal, but would = that affect the front 2 cylinders (5 and 6)?  Every other = indication (including the other 4 cylinder temps) are totally normal. =  Any other suggestions out there to look for? =  

Appreciate your = experience


Bob = Rickard


= --Apple-Mail=_2D8A3E09-47D8-442A-87F2-B210BA932477--