Search found 2261 matches

by John Fenner
Thu Sep 20, 2018 4:16 pm
Forum: Aircraft Power Only
Topic: 220 gpu rpm question
Replies: 4
Views: 215

Re: 220 gpu rpm question

If you hear a whistle you have an intake leak, you state a new overhaul, I have made mistakes, you need to check intake tubes, flanges for leaks, the only thing else from what you describe is timing.
by John Fenner
Thu Sep 20, 2018 9:17 am
Forum: Aircraft Power Only
Topic: 220 gpu rpm question
Replies: 4
Views: 215

Re: 220 gpu rpm question

Sounds like it is too rich at idle and then it clears out, you may have slight intake leaks that fat idle circuits are compensating for, a bit of brake cleaner, non chlorinated of course will find the leak.
by John Fenner
Thu Sep 20, 2018 9:06 am
Forum: Aircraft Power Only
Topic: 0470 overheating and running rough
Replies: 22
Views: 803

Re: 0470 overheating and running rough

Mags do not wander unless impulse coupler springs are weak or broken.
by John Fenner
Sun Sep 16, 2018 7:57 am
Forum: Aircraft Power Only
Topic: 0470 overheating and running rough
Replies: 22
Views: 803

Re: 0470 overheating and running rough

There lies the problem, it is detonating, you need to back off timing for 1, or go run some av gas through it 2 being you noticed a difference with the plug heat change, you need the d15 plugs back in it. Connies are very temperamental with timing and detonation you will have cracked cylinder heads ...
by John Fenner
Sun Sep 16, 2018 7:49 am
Forum: Aircraft Power Only
Topic: O320 accessory housing plugs
Replies: 5
Views: 143

Re: O320 accessory housing plugs

Should be #6 an
by John Fenner
Sat Sep 15, 2018 8:30 am
Forum: Aircraft Power Only
Topic: O320 accessory housing plugs
Replies: 5
Views: 143

Re: O320 accessory housing plugs

If you are plugging the oil cooler bypass galley, does your screen housing have a vernatherm in it? If not you need the plunger, spring, and the #6an plug for it. Does that front cover have the provision to run a pickup tube? If so the gasket will suffice in sealing the pickup galley with the solid ...
by John Fenner
Sat Sep 15, 2018 8:17 am
Forum: Aircraft Power Only
Topic: 0470 overheating and running rough
Replies: 22
Views: 803

Re: 0470 overheating and running rough

Ok, you obviously have a timing issue here, pull #1 plug, get to compression stroke tdc and back up crankshaft to 22° btdc if it is a true o470 there are degree marks on bottom edge of flange to align with split line of case to determine the degrees, pull sight plugs from mags and point covers, the ...
by John Fenner
Fri Sep 14, 2018 3:38 pm
Forum: Airboat Tech
Topic: control issues
Replies: 10
Views: 443

Re: control issues

Set them to 0" toe.
by John Fenner
Thu Sep 13, 2018 12:07 pm
Forum: Aircraft Power Only
Topic: 0540 torque how to gain
Replies: 3
Views: 246

Re: 0540 torque how to gain

Stay with carb, yes on 10:1 send cam and tappets to D&S in Tampa area, tell them what you want to do, they can add advance to the cam and adjust centerline to build torque #s
by John Fenner
Thu Sep 13, 2018 12:02 pm
Forum: Airboat Tech
Topic: control issues
Replies: 10
Views: 443

Re: control issues

You need a trim tab at rear of rudder to compensate, if rudder push left, bend tab left till they track neutral vise versa.
by John Fenner
Sun Sep 09, 2018 8:00 am
Forum: Airboat Tech
Topic: poly near arcadia fl
Replies: 3
Views: 243

Re: poly near arcadia fl

There is a place in clearwater that forms sheets of uhmw 6'8" x up to 14' the name escapes my mind.
by John Fenner
Mon Sep 03, 2018 8:49 pm
Forum: Aircraft Power Only
Topic: 0470 overheating and running rough
Replies: 22
Views: 803

Re: 0470 overheating and running rough

Non chlorinated brakeclean spray will find your leak.
by John Fenner
Mon Sep 03, 2018 8:41 pm
Forum: Aircraft Power Only
Topic: 220 GPU Weak Oil cooler line pressure
Replies: 11
Views: 460

Re: 220 GPU Weak Oil cooler line pressure

The cubic inch is 470 on a 220 and they are the ground power version of the o470-11/13 E185/225 due to user friendly parts as in valvetrain, pistons etc. Zero relation to a 540 lycoming.
by John Fenner
Mon Sep 03, 2018 9:26 am
Forum: Aircraft Power Only
Topic: 220 GPU Weak Oil cooler line pressure
Replies: 11
Views: 460

Re: 220 GPU Weak Oil cooler line pressure

I overhauled a Holley 500 and have a manifold to send him, to rid the zenith, should wake it up.
by John Fenner
Mon Sep 03, 2018 8:19 am
Forum: Aircraft Power Only
Topic: 220 GPU Weak Oil cooler line pressure
Replies: 11
Views: 460

Re: 220 GPU Weak Oil cooler line pressure

Check your inbox
by John Fenner
Sun Sep 02, 2018 11:34 am
Forum: Aircraft Power Only
Topic: 0470 overheating and running rough
Replies: 22
Views: 803

Re: 0470 overheating and running rough

Make sure lean and rich lever is at full rich, make sure fuel tank vent is clear of obstructions.
by John Fenner
Sun Sep 02, 2018 9:27 am
Forum: Airboat Talk
Topic: Starter Question?
Replies: 7
Views: 365

Re: Starter Question?

It does look good, if kicking back while starting, the pins that the impulse mag fly weights dog into are worn and it is not retarding to start correctly, likely a mag issue, and not a starter or mount.
by John Fenner
Sun Sep 02, 2018 9:22 am
Forum: Aircraft Power Only
Topic: 220 won't idle ?
Replies: 6
Views: 236

Re: 220 won't idle ?

Check the pcv port plug, if rubber cap, they split over time, suck air and idle circuit can't keep up.
by John Fenner
Sun Sep 02, 2018 9:15 am
Forum: Aircraft Power Only
Topic: 0470 overheating and running rough
Replies: 22
Views: 803

Re: 0470 overheating and running rough

Sounds like a lean condition to me, d 18 is all you need, d21 for oil burners in bottom plug holes. What carb?
by John Fenner
Fri Aug 31, 2018 12:23 pm
Forum: Airboat Talk
Topic: Starter Question?
Replies: 7
Views: 365

Re: Starter Question?

Post a pic of the pinion and ring gear relationship.
by John Fenner
Tue Aug 28, 2018 11:45 am
Forum: Airboat Talk
Topic: 0470 PERFORMANCE HELP??
Replies: 19
Views: 2146

Re: 0470 PERFORMANCE HELP??

Search for ly-con. They are the performance gurus.
by John Fenner
Tue Aug 28, 2018 11:35 am
Forum: Airboat Tech
Topic: E-185 a lot of blow by out of puke tube what to do?
Replies: 2
Views: 310

Re: E-185 a lot of blow by out of puke tube what to do?

Sounds like ring lands are worn out.
by John Fenner
Fri Aug 10, 2018 11:01 am
Forum: Airboat Tech
Topic: Power loss
Replies: 10
Views: 601

Re: Power loss

Put some av gas in it and see if it still does it.
by John Fenner
Thu Aug 09, 2018 1:52 pm
Forum: Aircraft Power Only
Topic: Starters
Replies: 14
Views: 811

Re: Starters

If the brush cages were cad or zinc plated, they would last forever.
by John Fenner
Thu Aug 09, 2018 12:19 pm
Forum: Aircraft Power Only
Topic: Starters
Replies: 14
Views: 811

Re: Starters

The nippondenso units have to use the steel backing plate to avoid the ears from breaking if it is the 1.8 the 2.0 and 2.1 they have solid ears, also the vents need to be plugged and not allow rain to fall into them, plus if brush holding cage is not coated to prevent rust, the brushes will stick an...

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