Search found 1142 matches

by GMAC 76
Wed Nov 06, 2019 9:49 am
Forum: Aircraft Power Only
Topic: Hard to start in Cold weather (30*)
Replies: 13
Views: 574

Re: Hard to start in Cold weather (30*)

try this sequence to start the engine cold....it is what I did to start mine when I lived in Nebraska.....turn on fuel pump to fill carb....slowly pump the throttle pedal 2 times....hold the pedal down after the second pump....with mags OFF turn engine over several revolutions....return pedal to idl...
by GMAC 76
Tue Oct 15, 2019 10:03 am
Forum: Aircraft Power Only
Topic: 0480 backfire upon deceleration
Replies: 6
Views: 1365

Re: 0480 backfire upon deceleration

friend of mine had that issue on his GO-480 and it was an intake leak
by GMAC 76
Fri Oct 04, 2019 4:35 pm
Forum: Aircraft Power Only
Topic: Lycoming 0360 idles but won’t run above idle
Replies: 18
Views: 890

Re: Lycoming 0360 idles but won’t run above idle

that is great!!!....thank you
by GMAC 76
Thu Oct 03, 2019 9:07 am
Forum: Aircraft Power Only
Topic: ma5 carb lean out cable
Replies: 9
Views: 575

Re: ma5 carb lean out cable

if you have the tall lean/rich lever that swings in near the top of the carb they actually make a return spring for it that bolts right on the carb
by GMAC 76
Tue Oct 01, 2019 12:00 pm
Forum: Aircraft Power Only
Topic: Lycoming 0360 idles but won’t run above idle
Replies: 18
Views: 890

Re: Lycoming 0360 idles but won’t run above idle

you can never have enough good spare parts for these engines....I have a pretty good inventory of aircraft carb parts and Bendix mag parts so if ya ever need something just let me know....got everything shipped est del date is thurs the 3rd...good luck
by GMAC 76
Tue Oct 01, 2019 11:37 am
Forum: Aircraft Power Only
Topic: Lycoming 0360 idles but won’t run above idle
Replies: 18
Views: 890

Re: Lycoming 0360 idles but won’t run above idle

looks like ya need a bowl gasket too....I will send ya 2 floats and a bowl gasket if ya pay for the shipping....you are right about the 3878 carb the other carb of choice for the 360 engine is the 10-4164 -1...….ya just never know what your gonna find in and on our airboat engines....all the #187 th...
by GMAC 76
Tue Oct 01, 2019 9:07 am
Forum: Aircraft Power Only
Topic: Lycoming 0360 idles but won’t run above idle
Replies: 18
Views: 890

Re: Lycoming 0360 idles but won’t run above idle

I don't have an inlet screen but give me your address and I will send ya a float and for your information that carb is off a 165hp franklin engine and may be just a little short on performance for the 360 unless someone put in the 360 atomizer nozzle/jet....is your float silver, brass or solid black...
by GMAC 76
Mon Sep 30, 2019 9:17 am
Forum: Aircraft Power Only
Topic: Lycoming 0360 idles but won’t run above idle
Replies: 18
Views: 890

Re: Lycoming 0360 idles but won’t run above idle

that tells me that if you pump the gas and it helps that it is giving the engine fuel thru the accelerator pump but not thru the main jet/nozzle....the idle jet runs the engine to about 1000rpm then the engine draws fuel from the main jet and if it wont run above 1000rpm without pumping the gas peda...
by GMAC 76
Sun Sep 29, 2019 9:40 pm
Forum: Aircraft Power Only
Topic: Lycoming 0360 idles but won’t run above idle
Replies: 18
Views: 890

Re: Lycoming 0360 idles but won’t run above idle

kind of sounds like the main jet/nozzle is clogged...….when the engine starts to stumble and die what happens if you pump the gas pedal?
by GMAC 76
Fri Sep 27, 2019 3:41 pm
Forum: Aircraft Power Only
Topic: Nose Seal Replacement Lycoming 0320
Replies: 14
Views: 2830

Re: Nose Seal Replacement Lycoming 0320

just get the number off the old seal and match it up with the new one
by GMAC 76
Sun Aug 18, 2019 10:24 am
Forum: Aircraft Power Only
Topic: Electamotive Ignition
Replies: 1
Views: 1218

Re: Electamotive Ignition

I always thought the one big advantage to the electronic ignitions was the timing advanced as the engine needed it.....if they tell ya not to use it and have a fixed timing at 25 degrees wouldn't ya just have an expensive glorified magneto ignition ?
by GMAC 76
Fri Aug 09, 2019 9:01 pm
Forum: Aircraft Power Only
Topic: O320 vacuum pad cover
Replies: 1
Views: 1074

Re: O320 vacuum pad cover

my 360 has had the long studs removed and a 1/4" thick plate with a gasket and four 1/4 x20 bolts to hold it in place
by GMAC 76
Fri Aug 09, 2019 8:57 pm
Forum: Aircraft Power Only
Topic: MA-4SPA 10-3678-32 Parts Diagram/List
Replies: 13
Views: 2342

Re: MA-4SPA 10-3678-32 Parts Diagram/List

sounds good...ill take care of it for ya
by GMAC 76
Fri Aug 09, 2019 8:55 pm
Forum: Aircraft Power Only
Topic: Bench checking magnetos
Replies: 2
Views: 1144

Re: Bench checking magnetos

those are 1200 series mags and should spark big time by hand no drill needed if they are right....I run them on my 200 and they are really hot when they are setup right but they are a different animal to setup than the 20/200 series mags.....send them with the carb and ill get'em right for ya...you ...
by GMAC 76
Fri Aug 09, 2019 6:25 pm
Forum: Aircraft Power Only
Topic: MA-4SPA 10-3678-32 Parts Diagram/List
Replies: 13
Views: 2342

Re: MA-4SPA 10-3678-32 Parts Diagram/List

hell yes man send it to me and I will take care of it and send it back to ya with the parts that ya don't need or are wrong...….some float numbers have been superseded by new numbers not a big deal ….take about a day...….greg mccloud 4 Henderson rd lake placid fl 33852
by GMAC 76
Fri Aug 02, 2019 9:59 am
Forum: Aircraft Power Only
Topic: GTSIO 220/520 intake/carb question
Replies: 10
Views: 1803

Re: GTSIO 220/520 intake/carb question

my neighbor has a 220/520 engine (not gtsio cyls) and has the 500 holley carb and it runs perfect and is easy to tune...it has the log intake with an inverted "Y" with the carb right out in front of the mags
by GMAC 76
Tue Jul 23, 2019 9:50 pm
Forum: Aircraft Power Only
Topic: Different spark patterns
Replies: 5
Views: 1231

Re: Different spark patterns

slick is a brand name not a type of mag...impulse is a mag that retards the timing to fire the engine.....shower of sparks is used in place of the impulse coupling assembly......I remember waaay back when an impulse mag was refered to as a Bendix and a straight or non impulse mag was referred to as ...
by GMAC 76
Sat Jul 20, 2019 6:35 pm
Forum: Airboat Tech
Topic: Circle h hulls Information
Replies: 8
Views: 2517

Re: Circle h hulls Information

if that is the Circle H hulls from Alabama my buddy has a 12 footer with poly and it is a really good hull, runs fine no hop no trim tab ...but it is not cut down and has a DD carmotor on it though
by GMAC 76
Wed Jul 10, 2019 11:22 am
Forum: Aircraft Power Only
Topic: switching from magnetos to electronic ignition?
Replies: 6
Views: 1637

Re: switching from magnetos to electronic ignition?

IMO.....when this kind of thing happens.....sell your mags and wires put a pacemaker ignition on it and never look back
by GMAC 76
Fri Jul 05, 2019 9:11 pm
Forum: Aircraft Power Only
Topic: 0-360 Hesitation
Replies: 4
Views: 1734

Re: 0-360 Hesitation

if ya got a problem and ya think it is the carb and I rebuilt it ….send it back and I will see what I can do to figure out what is wrong and make it right.... no problem
by GMAC 76
Tue Jul 02, 2019 10:43 pm
Forum: Aircraft Power Only
Topic: Mag timing for 87 octane
Replies: 15
Views: 1862

Re: Mag timing for 87 octane

what carb are you running.....10-???? on the id tag
by GMAC 76
Tue Jul 02, 2019 9:16 pm
Forum: Aircraft Power Only
Topic: Mag timing for 87 octane
Replies: 15
Views: 1862

Re: Mag timing for 87 octane

if the problem is when the engine is hot or at wot it may be a coil issue
by GMAC 76
Sun Jun 02, 2019 5:14 pm
Forum: Aircraft Power Only
Topic: Lycoming 0290 help
Replies: 4
Views: 977

Re: Lycoming 0290 help

the 290...125hp stock uses an MA-3SPA carb ….I believe the biggest engine to use that carb is the C-145 Continental but I don't see a lot of improvement in performance with just a carb change....jmo
by GMAC 76
Thu May 09, 2019 9:21 am
Forum: Aircraft Power Only
Topic: 0-320 spark plug
Replies: 5
Views: 1062

Re: 0-320 spark plug

imo…..the new autolite #386 nickel plated....gapped at .022-.024
by GMAC 76
Fri Apr 19, 2019 5:31 pm
Forum: Airboat Talk
Topic: mag help
Replies: 2
Views: 301

Re: mag help

I work on bendix mags but i am little far away in lake placid

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