Today's Message Index:
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1. 11:28 AM - What Temps should I see? (Patricia Kirkpatrick)
2. 12:53 PM - Re: What Temps should I see? (Scott Trejo)
3. 10:54 PM - Re: What Temps should I see? (Brock)
Message 1
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| Subject: | What Temps should I see? |
Gentlemen (and Ladies too)
I just had a newly overhauled O-360 installed on my tiger, along with a JPI
EDM-900 analyzer. My issue is that I have no reference data to tell how hot
my engine is running. I am aware that Tigers have a reputation for running
hot, but my old panel only had an EGT gage. Specifically, what CHTs for
cyls 3 & 4 should I expect to see on a newly overhauled ( and thus tight)
engine during climb and also during cruise? Also, what temps should I
expect to see on those same cylinders during climbs and during cruise after
the engine is broken in and using detergent oil? I understand climb speeds
and ambient temps affect the situation to some extent, but some ballpark
figures would be nice for a reference.
Ken Kirkpatrick
N28546
Message 2
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| Subject: | Re: What Temps should I see? |
Ken, I have a 1977 AA5B with JPI CHT/EGT monitor. My engine has less then 3
00hrs TSOH and during the summer I see 425 in cruise and 440 during climb. I
use a cruise climb at 110kts. CHT's have always been really hot. My baff
ling is really good also. I just installed a new Lopresti nose bowl but ha
ven't flown it yet. I will post results soon.
Scott Trejo
N499GT
Sent from my iPhone
On Jun 22, 2013, at 1:27 PM, "Patricia Kirkpatrick" <thornytoo1@hughes.net> w
rote:
> Gentlemen (and Ladies too)
>
> I just had a newly overhauled O-360 installed on my tiger, along with a JP
I EDM-900 analyzer. My issue is that I have no reference data to tell how h
ot my engine is running. I am aware that Tigers have a reputation for runni
ng hot, but my old panel only had an EGT gage. Specifically, what CHTs for c
yls 3 & 4 should I expect to see on a newly overhauled ( and thus tight) eng
ine during climb and also during cruise? Also, what temps should I expect t
o see on those same cylinders during climbs and during cruise after the engi
ne is broken in and using detergent oil? I understand climb speeds and ambi
ent temps affect the situation to some extent, but some ballpark figures wou
ld be nice for a reference.
>
> Ken Kirkpatrick
> N28546
>
>
>
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Message 3
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| Subject: | Re: What Temps should I see? |
Ken,
My tiger has about 600 hours smoh and I have edm-830. I have worked reall
y hard to get my baffling very consistent between cylinders. During fast cru
ise, WOT leaned to 2700rpm (luckily my engine runs about 75 degrees LOP very
well) anywhere from 5500 to 8500ft 135-136kts TAS; I see anywhere from 390-
410 on cyls 2,3, and 4 depending on OAT. They also have EGT spread less the
n 20. Number 1 is my oddball, CHT generally runs about 50 cooler than the o
thers, and EGT is around 100 cooler. It is my first cylinder to start missin
g while leaning.
Brock
Sent from my iPad
On Jun 22, 2013, at 1:27 PM, "Patricia Kirkpatrick" <thornytoo1@hughes.net> w
rote:
> Gentlemen (and Ladies too)
>
> I just had a newly overhauled O-360 installed on my tiger, along with a JP
I EDM-900 analyzer. My issue is that I have no reference data to tell how h
ot my engine is running. I am aware that Tigers have a reputation for runni
ng hot, but my old panel only had an EGT gage. Specifically, what CHTs for c
yls 3 & 4 should I expect to see on a newly overhauled ( and thus tight) eng
ine during climb and also during cruise? Also, what temps should I expect t
o see on those same cylinders during climbs and during cruise after the engi
ne is broken in and using detergent oil? I understand climb speeds and ambi
ent temps affect the situation to some extent, but some ballpark figures wou
ld be nice for a reference.
>
> Ken Kirkpatrick
> N28546
>
>
>
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