Search found 1131 matches

by GMAC 76
Sat Sep 22, 2018 10:18 am
Forum: Aircraft Power Only
Topic: MA-4SPA 10-3678-32 Parts Diagram/List
Replies: 13
Views: 877

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

there is usually a list of the contents on the kits ...I have found the aircraft kits have a lot of parts in them that airboaters don't necessarily use like safety clips etc that are required by the faa for an aircraft carb....as far as the shafts wearing out usually the bushings wear before the sha...
by GMAC 76
Fri Sep 21, 2018 9:47 pm
Forum: Aircraft Power Only
Topic: O320 160hp over heating and running rough
Replies: 4
Views: 545

Re: O320 160hp over heating and running rough

is it the right carb with the right jet nozzle?...if its running rough it may just be a mag, plug or wire problem....try a mag drop test at 1800rpm and see if ya got an ign problem...might be a busted impulse spring or carbon track or etc.
by GMAC 76
Tue Sep 18, 2018 10:02 am
Forum: Aircraft Power Only
Topic: MA-4SPA 10-3678-32 Parts Diagram/List
Replies: 13
Views: 877

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

I have the marvel schebler overhaul page for that carb ...it has the parts and part numbers....I will take a pic and send it to ya....I also have about all the parts for those carbs in stock...sorry they are not more clear I have a cheap camera and I must shake a little...lol
by GMAC 76
Thu Sep 06, 2018 11:33 pm
Forum: Aircraft Power Only
Topic: MA-6 AA 10-4401-1 parts
Replies: 2
Views: 328

Re: MA-6 AA 10-4401-1 parts

I have all those parts in my shop....or I can give ya the part numbers and a vendor to call
by GMAC 76
Sat Sep 01, 2018 9:27 pm
Forum: Aircraft Power Only
Topic: 220 won't idle ?
Replies: 19
Views: 1569

Re: 220 won't idle ?

MESSAGE SENT
by GMAC 76
Fri Aug 10, 2018 11:11 am
Forum: Airboat Tech
Topic: Power loss
Replies: 10
Views: 1064

Re: Power loss

250RPM is a big mag drop....sounds like its time for a little tlc
by GMAC 76
Wed Aug 08, 2018 6:40 pm
Forum: Airboat Tech
Topic: Power loss
Replies: 10
Views: 1064

Re: Power loss

what rpm are you checking the mag drop......might have a coil going south ...the longer it runs the hotter it gets the worse it sparks...let it cool its ok till it gets hot again
by GMAC 76
Thu Jun 14, 2018 2:47 pm
Forum: Aircraft Power Only
Topic: Best way to dry/clean wet mags?
Replies: 5
Views: 598

Re: Best way to dry/clean wet mags?

don't see why not.....just make sure its clean and dry before ya fire it up
by GMAC 76
Thu Jun 14, 2018 2:22 pm
Forum: Aircraft Power Only
Topic: Best way to dry/clean wet mags?
Replies: 5
Views: 598

Re: Best way to dry/clean wet mags?

you can take the plug wire cap off and the points cover just below it off without disturbing the timing...just fyi you have 2 different series mags there one is a 20 the other a 200.both bendix...its not a problem just wanted ya to know they will look different when ya pull the cover off....ya might...
by GMAC 76
Sun Jun 10, 2018 10:02 am
Forum: Aircraft Power Only
Topic: Bendix magneto internal timming
Replies: 6
Views: 736

Re: Bendix magneto internal timming

X2....KRAZYMATT......both mags on the 435 are left hand rotation.....I have never seen a dist gear marked "with impulse" unless these are the old old lunch box bendix mags ...most lyc engines time at 25 btdc but the old 435 times at 15
by GMAC 76
Thu Jun 07, 2018 12:25 pm
Forum: Airboat Tech
Topic: Slick bottom recipe?
Replies: 3
Views: 643

Re: Slick bottom recipe?

I remember some good ol boys using gel coat, hardener and graphite years ago....believe it worked pretty good too
by GMAC 76
Mon May 28, 2018 10:06 am
Forum: Aircraft Power Only
Topic: continental 0300
Replies: 3
Views: 396

Re: continental 0300

also that engine has an oil screen that filters the oil....just unscrew it from the accessory housing clean it out and put her back in...it is good to do this everytime ya change oil plus it lets ya check how the engine is wearing inside
by GMAC 76
Sun May 27, 2018 2:22 pm
Forum: Aircraft Power Only
Topic: continental 0300
Replies: 3
Views: 396

Re: continental 0300

you can get a key start starter to bolt right in where the pull starter is....probably cheaper that a conversion kit especially if you have the stock generator/alternator already...they are not real expensive and you can use the same clutch drive assembly...just need the starter and a solenoid
by GMAC 76
Fri May 18, 2018 9:39 am
Forum: Aircraft Power Only
Topic: 0320 Oil Change
Replies: 7
Views: 726

Re: 0320 Oil Change

X2 ON THE SCREEN......it will tell ya a lot about how the engine is wearing too.....add some lucas oil stabilizer to the oil change, the engine will love it
by GMAC 76
Thu May 10, 2018 8:21 am
Forum: Aircraft Power Only
Topic: Tach ?
Replies: 11
Views: 1031

Re: Tach ?

I know a lot of guys that don't run a tach.....the do however us a tach to set their prop so that wot is within safe limits ...then they know they are not over revving the engine
by GMAC 76
Thu Apr 19, 2018 11:48 am
Forum: Airboat Talk
Topic: Stupid question maybe?
Replies: 16
Views: 1847

Re: Stupid question maybe?

hey Mark, if ya need wiring harness marked and ready to install, a mag or a mag rebuilt I can help ya out...done a lot of work for guys in your area...just give me a call 863-659-1331 good luck with her!!!
by GMAC 76
Thu Apr 19, 2018 10:54 am
Forum: Aircraft Power Only
Topic: A/C engines converted to run on diesel.
Replies: 3
Views: 761

Re: A/C engines converted to run on diesel.

i would be very concerned about the aircraft cyl seperating with the compression and boost
by GMAC 76
Mon Apr 16, 2018 8:03 pm
Forum: Aircraft Power Only
Topic: lycoming 0360 top end rebuild overhaul?
Replies: 5
Views: 970

Re: lycoming 0360 top end rebuild overhaul?

Justin Ficken...Apopka......NO QUESTION
by GMAC 76
Thu Apr 12, 2018 2:34 pm
Forum: Aircraft Power Only
Topic: GPU
Replies: 3
Views: 780

Re: GPU

I would think a good way to compare hp to hp would be to compare what you have as far as prop, length ,pitch and wot rpm with a an engine with the same prop...in other words if you find a 260hp with the same prop compare all the above with your prop to see how close they are
by GMAC 76
Thu Apr 05, 2018 8:09 pm
Forum: Aircraft Power Only
Topic: 520 model ID
Replies: 10
Views: 816

Re: 520 model ID

how could it be a true io-520 and have only 250hp when the book on them shows 285 to 300hp ....my friends engine was a 250hp but it is a carbureted 540 Lycoming totally different animal... there is an engine kill lever on the io's on the servo....
by GMAC 76
Thu Apr 05, 2018 3:16 pm
Forum: Aircraft Power Only
Topic: 520 model ID
Replies: 10
Views: 816

Re: 520 model ID

imo it is alot of weight....alot of passengers for a 12' hull for real performance but hey it might do want ya want...ya got a lot of power....I had a buddy who had the same hull and setup with a 540 and it did ok.....he changed it to a single driver rear and a single passenger ...he said it was lik...
by GMAC 76
Thu Apr 05, 2018 12:27 pm
Forum: Aircraft Power Only
Topic: 520 model ID
Replies: 10
Views: 816

Re: 520 model ID

imo....with that kind of true hp on that hull with the right prop you would be very happy....especially if the rigging and all metal work were done right
by GMAC 76
Wed Apr 04, 2018 9:51 pm
Forum: Aircraft Power Only
Topic: Srnenich 72"h series prop
Replies: 4
Views: 753

Re: Srnenich 72

one of the sensenich reps told me that the orginal reason for the development of the h series was for racng and trying to compete with the warp drives when they first came out...they spooled up quick and had great top end for raccing but not much push for the hill...I dont know but im sure some one ...
by GMAC 76
Wed Apr 04, 2018 10:15 am
Forum: Aircraft Power Only
Topic: 520 model ID
Replies: 10
Views: 816

Re: 520 model ID

my papers show the io-520 a,b,d,f,j,k,l,m engines are rated at 285-300hp.......the tiso and gtiso engines are rated at 285-375 hp
by GMAC 76
Tue Apr 03, 2018 7:08 pm
Forum: Aircraft Power Only
Topic: 520 model ID
Replies: 10
Views: 816

Re: 520 model ID

cont plates are usually found in the middle on the top side of the engine case.....fyi all 520's were fuel injected

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