Author: "dan carley" <dfcpac@...> Time: Sat Sep 13, 2003 9:20 am PDT Link
i've just changed engine from a 0320-e2d 150 hp to a 160 hp engine.
all four clyinders are running a little lean. i used the old carb.
from the 150 hp engine. do you have to rejet the carb for the higher
compression cylinders? is there a way of adjusting the carb to run
richer?
thanks
danny
Author: "mahlon_r" <mahlon_russell@...> Time: Sat Sep 13, 2003 4:45 pm PDT Link
Hi Dan,
Assuming you have a 10-5009,10-5009n,10-5135 or a 10-5219 you are
fine with either a 150HP or 160 HP engine. If you don't have one of
them, let me know what carb you have and I will double check and make
sure it will run OK on a 160HP for you. Almost all O-320 carbs will
work and are approved for both 150HO and 160HP out of the box.
Normally, these carbs will produce a EGT spread of approx. 75 to 100
degrees at low altitude from full rich to peak egt. If you have above
a 50-degree spread at 1000 to 1500 above sea level you should be OK.
The easiest way to make it richer is to make sure the float level is
set correctly. If that is OK blow out all the jets first before
trying to enlarge one drill size. Sometimes making the jets bigger
will cause erratic operation at some power settings and I really
wouldn't recommend doing it.
Good Luck,
Mahlon
--- In RV-4@yahoogroups.com, "dan carley" <dfcpac@a...> wrote:
> i've just changed engine from a 0320-e2d 150 hp to a 160 hp engine.
> all four clyinders are running a little lean. i used the old carb.
> from the 150 hp engine. do you have to rejet the carb for the
higher
> compression cylinders? is there a way of adjusting the carb to run
> richer?
>
> thanks
> danny
Author: dfcpac@... Time: Sun Sep 14, 2003 5:38 am PDT Link
hi mahlon,
thanks for the quick responce. i'm just a little afraid of doing damage to a
new engine. i'll check on the carb number tomorrow and let you know which one
it is.
some people say that a new engine will run hotter while breakin in. i put a
cht on each of the cylinders, 1 reads 310, 2 reads 240, 3 reads 390 4 reads
370. when i pull the nose up for a good rate of climb. number 3 goes to about
425. that worries me a bit. all four cylinders are burning the plugs a litlle too
lean. does the engine have to break in? i'm also using mineral oil.
sorry to be the pest but it really bothers me.
thanks
danny
[Non-text portions of this message have been removed]
Author: Tim <tlc_2@...> Time: Sun Sep 14, 2003 5:38 am PDT Link
Does the up'ed compression to 160hp mean no longer Mogas option??
Tim
dan carley wrote:
> i've just changed engine from a 0320-e2d 150 hp to a 160 hp engine.
> all four clyinders are running a little lean. i used the old carb.
> from the 150 hp engine. do you have to rejet the carb for the higher
> compression cylinders? is there a way of adjusting the carb to run
> richer?
>
> thanks
> danny
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[Non-text portions of this message have been removed]
Author: "mahlon_r" <mahlon_russell@...> Time: Sun Sep 14, 2003 6:28 pm PDT Link
You should be able to use MO gas with 160 HP. Compression ratios of
up to 8.5:1 (which the 160HP O-320 is) seem to be ok with 91 octane
mogas and above.
Good Luck,
Mahlon
--- In RV-4@yahoogroups.com, Tim <tlc_2@t...> wrote:
> Does the up'ed compression to 160hp mean no longer Mogas option??
>
> Tim
>
> dan carley wrote:
>
> > i've just changed engine from a 0320-e2d 150 hp to a 160 hp
engine.
> > all four clyinders are running a little lean. i used the old
carb.
> > from the 150 hp engine. do you have to rejet the carb for the
higher
> > compression cylinders? is there a way of adjusting the carb to run
> > richer?
> >
> > thanks
> > danny
> > Yahoo! Groups Sponsor
> ADVERTISEMENT
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Service.
> [Non-text portions of this message have been removed]
Author: dfcpac@... Time: Sun Sep 14, 2003 6:28 pm PDT Link
tim,
yes not mogas for 8.5 to 1 compression. i wasn't running mogas don't like it.
dan
[Non-text portions of this message have been removed]
Author: dfcpac@... Time: Sun Sep 14, 2003 6:28 pm PDT Link
hi mahlon,
i removed the carb today. i did find the four screws that hold the carb
together, 2 of them were only finger tight. could that be the problem. it is a
10-5009 series 4spa carb, everything else looked clean and floats looked close by
eye where they should be.
regards
danny
[Non-text portions of this message have been removed]
Author: "mahlon_r" <mahlon_russell@...> Time: Sun Sep 14, 2003 6:28 pm PDT Link
Hi Dan,
The temps don't seem to out of line for new cylinders. Although the
240 on number two seems to cool! Maybe a product of your baffle
system? If you asked me for target cruise cht'S I would say 350 to
375 F so you aren't very far off the mark especially with new rings
which will normally cause higher cht's for 5 or so hours. For normal
operation cruise CHT below 400 is fine, with 350 to 375 optimum, and
climb below 450F is OK. I would try to keep it cooler for break in,
shallow out the climbs for the time being to keep the climb cht's
down. I will email you the break in instructions we supply with our
engine overhauls tomorrow, at home now and don't have a copy on this
computer. You might find them helpful. Also you might take a look at
an article I wrote on engine break in on my company's web site
http://www.matituck.com under tech advice. It explains what is going
on during break in and helps understand why you should avoid high
temps if you can.
Mineral oil shouldn't effect the cht's one way or the other.
Good Luck,
Mahlon
--- In RV-4@yahoogroups.com, dfcpac@a... wrote:
> hi mahlon,
> thanks for the quick responce. i'm just a little afraid of doing
damage to a
> new engine. i'll check on the carb number tomorrow and let you know
which one
> it is.
>
> some people say that a new engine will run hotter while breakin in.
i put a
> cht on each of the cylinders, 1 reads 310, 2 reads 240, 3 reads 390
4 reads
> 370. when i pull the nose up for a good rate of climb. number 3
goes to about
> 425. that worries me a bit. all four cylinders are burning the
plugs a litlle too
> lean. does the engine have to break in? i'm also using mineral oil.
>
> sorry to be the pest but it really bothers me.
> thanks
> danny
> [Non-text portions of this message have been removed]
Author: dfcpac@... Time: Mon Sep 15, 2003 5:21 am PDT Link
mahlon,
i typed 250 but it's 350 on the cht sorry. are you located by matituck. i'm
on long island. going over to matituck tomorrow for gasket set.
thanks
again
danny
[Non-text portions of this message have been removed]
Author: "Rob Ray" <smokyray@...> Time: Mon Sep 15, 2003 8:43 am PDT Link
Danny;
Put 100 hours on it, then let me know what it's doing. Trust me,
with almost 2000 hours of banner towing, those numbers are fine.
Cruise climb, don't go lean of peak EGT, check your baffling, run
mineral oil and just FLY IT.
When your oil temp stays at 240 and your CHT's average 450 all day,
then you have the temps Lycomings will tolerate in a work
environment.
RR
--- In RV-4@yahoogroups.com, dfcpac@a... wrote:
> hi mahlon,
> thanks for the quick responce. i'm just a little afraid of doing
damage to a
> new engine. i'll check on the carb number tomorrow and let you
know which one
> it is.
>
> some people say that a new engine will run hotter while breakin
in. i put a
> cht on each of the cylinders, 1 reads 310, 2 reads 240, 3 reads
390 4 reads
> 370. when i pull the nose up for a good rate of climb. number 3
goes to about
> 425. that worries me a bit. all four cylinders are burning the
plugs a litlle too
> lean. does the engine have to break in? i'm also using mineral
oil.
>
> sorry to be the pest but it really bothers me.
> thanks
> danny
> [Non-text portions of this message have been removed]
Author: "Rob Ray" <smokyray@...> Time: Mon Sep 15, 2003 8:44 am PDT Link
We mixed mogas 50/50 with AVgas for the 180HP Lycoming in our Scout
towplanes with good results and clean plugs....
RR
--- In RV-4@yahoogroups.com, dfcpac@a... wrote:
> tim,
> yes not mogas for 8.5 to 1 compression. i wasn't running mogas
don't like it.
>
> dan
> [Non-text portions of this message have been removed]
Author: Tim <tlc_2@...> Time: Mon Sep 15, 2003 6:16 pm PDT Link
Remember the 100LL fuel truck driver stating some years back, yep 4
times more lead than 80/87 and the call it low lead for the
Environmentalists ;-)
Tim
Rob Ray wrote:
> We mixed mogas 50/50 with AVgas for the 180HP Lycoming in our Scout
> towplanes with good results and clean plugs....
>
> RR
> --- In RV-4@yahoogroups.com, dfcpac@a... wrote:
> > tim,
> > yes not mogas for 8.5 to 1 compression. i wasn't running mogas
> don't like it.
> >
> > dan
> > [Non-text portions of this message have been removed]
> Yahoo! Groups Sponsor
ADVERTISEMENT
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