RVG8tor
Well Known Member
I am looking for some advice. I only have 7 hours on my new engine and plane but I am starting to see what might be issues. From the start my CHTs have never gone above 380 and that is only on #4, it helps that the OAT is 38-43. The odd thing is #1 and #3 run 335 while #2 runs 350 and #4 360ish. I would have thought #2 would run cooler than #3 and #4.
As for #3, I have a washer that holds the rear baffle out a bit and I put foil tape over the lower half of the heat muff port. I covered the heat muff port some since I read that choking the flow will help gain some heat, for now i fell like I have inadequate heat but that is another matter.
So since the left side of my engine runs warmer CHTs would I be correct in assuming I must have some sort of baffle leak on that side. I do have the larger 8432R Oil Cooler so perhaps that is robbing too much air? I did RTV the upper and lower slots of the cooler to make sure the air goes through the cooler. The Oil Temp stays rock solid at 180 unless I climb and then it will go up to 220ish. I am grounded due to the weather so I thought I would look for potential fixes.
Too early to tell on the beak-in but in 7 hours I have used less than a quart, just over half to my uncalibrated eye on the dip stick.
So should I keep flying and try to balance the temps after say 25-50 hours? I basically climb shallow (110-120 kts) then cruise 75-80 % for as long as I can which due to weather has only been an hour each flight I would like to get these flights up to say 2 hours or more. Of course at 14 GPH that is about the limit.
I have not been leaning at all, not really sure when one should start that on a new engine, everyone just says run it hard. I have one guy that thinks I should do nothing but cruise hard for 50 hours, no stalls, slow flight or touch and goes, the only reduction is for a very shallow decent for one pattern and landing.
Thanks for the advice. Oh, EGT runs 1300 or less on takeoff and in cruise. my #1 is off a bit from the others but I think I might have messed up its location compared to the others since it sits in the curve of the #1 exhaust. I was putting them 2" below the exhaust pipe flange. The other EGTs are within a few degrees of one another.
As for #3, I have a washer that holds the rear baffle out a bit and I put foil tape over the lower half of the heat muff port. I covered the heat muff port some since I read that choking the flow will help gain some heat, for now i fell like I have inadequate heat but that is another matter.
So since the left side of my engine runs warmer CHTs would I be correct in assuming I must have some sort of baffle leak on that side. I do have the larger 8432R Oil Cooler so perhaps that is robbing too much air? I did RTV the upper and lower slots of the cooler to make sure the air goes through the cooler. The Oil Temp stays rock solid at 180 unless I climb and then it will go up to 220ish. I am grounded due to the weather so I thought I would look for potential fixes.
Too early to tell on the beak-in but in 7 hours I have used less than a quart, just over half to my uncalibrated eye on the dip stick.
So should I keep flying and try to balance the temps after say 25-50 hours? I basically climb shallow (110-120 kts) then cruise 75-80 % for as long as I can which due to weather has only been an hour each flight I would like to get these flights up to say 2 hours or more. Of course at 14 GPH that is about the limit.
I have not been leaning at all, not really sure when one should start that on a new engine, everyone just says run it hard. I have one guy that thinks I should do nothing but cruise hard for 50 hours, no stalls, slow flight or touch and goes, the only reduction is for a very shallow decent for one pattern and landing.
Thanks for the advice. Oh, EGT runs 1300 or less on takeoff and in cruise. my #1 is off a bit from the others but I think I might have messed up its location compared to the others since it sits in the curve of the #1 exhaust. I was putting them 2" below the exhaust pipe flange. The other EGTs are within a few degrees of one another.