Search found 209 matches

by krazymatt
Wed May 22, 2019 9:17 pm
Forum: Airboat Talk
Topic: Building a 70k airboat
Replies: 36
Views: 2387

Re: Building a 70k airboat

What I'm trying to understand is if you go out and have a super nice, super fancy, super expensive spit shined Airboat then what use is it to you other than to show off for once you spend that kind of money on an Airboat your hardly going to put it in the water and if you do your going to be scared...
by krazymatt
Sat Jan 12, 2019 12:02 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Depending on which manual u are looking at there are some descrepcancies...
by krazymatt
Sat Jan 12, 2019 12:00 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

I meant to write 3- 1/2" ports. 2 returns to the sump and one pressure port from the pump. The2 that return to the sump are just threaded ports that dump directly back into the the sump.
by krazymatt
Thu Jan 10, 2019 10:17 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Yes. there’s an oil port that runs from acc housing to the sump. I’ll look at a 360 I’ve got apart to see if that exists on a 4cyl. The wrong acc housing or wrong gasket could cover that hole. Crazymatt, can you get us more pics of your front case? And where your cooler lines are connected. That ac...
by krazymatt
Tue Jan 08, 2019 1:19 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

for the time being i think i am going to put the original heavier spring back in and add some lucas oil stabilzer to the oil to try to thicken it up someuntil i get some time to pull the jugs. this may let me ride a little longer before having to stop to let it cool down. im just worried with the li...
by krazymatt
Tue Jan 08, 2019 10:15 am
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

Re: timing mags/ snapping the impulse coupling

Just a question. Does that 435 have a vernatherm or the spring and plunger? Problems with either will cause hot oil. Lack of flow to the cooler etc. I’m sure you’ve shot the pan to check that the gauge is telling the truth. no vernatherm, uses spring and plunger. i put pressure gauge in cooler line...
by krazymatt
Wed Jan 02, 2019 9:48 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

i put a lighter spring in there have not tried it yet, going to change oil and run it, but im having some suspicions and i dont want to run it and starve the bearings of oil by redirecting the reduced amount they maybe getting to the oil cooler.... might need to pull the 3 jugs on the right side and...
by krazymatt
Wed Jan 02, 2019 9:40 am
Forum: Aircraft Power Only
Topic: Lycoming 0435
Replies: 14
Views: 4553

Re: Lycoming 0435

black betty wrote:Looking for some cylinders for an 0435. Anybody body know where I can get some


Try Justin Ficken in Apopka. (JT540 on here) he has alot of parts for these motors...
by krazymatt
Sun Dec 30, 2018 6:53 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Ran the boat today went from Florence all way to halfway lake before it hit 230. Oil leak is fixed but oil is still heating up. Oil pressure is good. Going to try lighter spring in the oil cooler valve and see what happens and put fresh oil in it
by krazymatt
Sat Dec 29, 2018 4:41 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

The motor should be tight! The motor doesn't have more than 10 hrs of tach time since being overhauled. Crank was cleaned up to standard within tolerances, rods were overhauled and fresh grind cam and lifters from d&s Camshafts. All 6 cylinders were overhauled by mark at don George's shop. New r...
by krazymatt
Sat Dec 29, 2018 1:15 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Again this motor does not use a vernatherm / temperature to open and close the valve to the oil cooler. It has a spring loaded bypass valve for the oil cooler and then also has an auxiliary oil pressure relief valve in the block. The spring in both valves is the same (p/n 65703) It says it opens at ...
by krazymatt
Sat Dec 29, 2018 12:24 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Update on what has been done and I have found. I lowered my timing to 22 btdc as suggested to try by gmac. I put 2 ball valves and a pressure gauge inline with my oil cooler so I could moniter the pressure and also cut off flow to the cooler and crack the other ball valve to see flow through the cir...
by krazymatt
Sun Dec 23, 2018 11:16 am
Forum: Airboat Talk
Topic: Lookin For 18mm spark plug helicoil
Replies: 4
Views: 335

Lookin For 18mm spark plug helicoil

Anyone know where I could find 18mm spark plug helicoil near cocoa/ Merritt island/ titusville? Was adjusting the mags n the damn insert came out when I pulled #1 plug! :twisted:
by krazymatt
Thu Nov 08, 2018 1:34 pm
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

Re: timing mags/ snapping the impulse coupling

thank you all again for the input. been so busy lately havent had time to get to the river to screw with it! first i will try as it is and take my ir gun and see what the cylinder temps are and also temp in and out of the oil cooler. then possibly try lowering the timing on the mags.
by krazymatt
Mon Nov 05, 2018 4:20 pm
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

Re: timing mags/ snapping the impulse coupling

Carb is a 4-5 model number 10-2518. After a search here you posted about this carb in the past. See this post: viewtopic.php?t=69713

Do you think it's possible this carb isn't enough for my setup now.
by krazymatt
Mon Nov 05, 2018 11:53 am
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

Re: timing mags/ snapping the impulse coupling

if it run a go-480 without heating up then I would bet it is all right for your 435.....I was just thinking that there are several 4-5 carbs that would bolt right up but would not be enough for the 435 but if ya got a number that will tell ya what engine that carb is for and then there will be no q...
by krazymatt
Mon Nov 05, 2018 10:21 am
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

Re: timing mags/ snapping the impulse coupling

I have found that when ya start frankeinsting engines with different cyls, cams, compression ratios, carburetors etc that a slight retard in timing helps in several ways...I have my modified 0-360 set at 22 degress btdc and it preforms much better,runs cooler and starts better than at 25 degrees......
by krazymatt
Fri Nov 02, 2018 10:11 am
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

Re: timing mags/ snapping the impulse coupling

Turn it same as you would a straight drive, the dog will engage the pin and stop the shaft, the coupler will turn till it ramps the dog out of pin and snap through. You can turn it backwards to line up e-gap for the timing mark in the window. hmmm, the coupling on mine isnt like a regular one with ...
by krazymatt
Thu Nov 01, 2018 10:16 am
Forum: Aircraft Power Only
Topic: timing mags/ snapping the impulse coupling
Replies: 19
Views: 1238

timing mags/ snapping the impulse coupling

can someone explain to me the procedure to "snapping" the impulse couling before setting the mags? i understand the timing procedure with normal str8 couplings. just want to make sure my mags are set correctly. both my mags have impulse couplers and set them both the same way so the buzz b...
by krazymatt
Sun Oct 28, 2018 10:54 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Going to try to get it to the river this week. Will try the Lucas, I did run it in the past as the old rings and bearings, and crank were worn slap out and it did help some with the oil pressure. Also gonna try to remember the IR temp gun.
by krazymatt
Sun Oct 28, 2018 10:49 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Is the h2ad 320 oil screen housing different than the regular one? I have a 150 hp o320 and I've looked at the oil screen, oil screen housing, vernathem, oil filter adapter and it doesn't look like any of it will work on my motor.
by krazymatt
Sun Oct 28, 2018 10:48 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Thanks for the replies. Bump was just to bring the post back up hoping for more input. (Bring. Up. My. Post.) This motor is a dinosaur and not a lot of people familiar with it. What would happen if I removed the relief valve assembly? Would it then just circuilate through the cooler and not the rest...
by krazymatt
Fri Oct 26, 2018 3:00 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

bump
by krazymatt
Sat Oct 13, 2018 1:29 pm
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

Re: O435 oil temperature / relief valve

Not very familiar with the oil system on that engine, if you have an infrared thermometer, good place to start. Ya me either, it doesn't have a veneratherm valve or adjustable relief valve. I do know you can adjust the pressure by shimming the spring with washers. (There are no washers in it right ...
by krazymatt
Sat Oct 13, 2018 9:58 am
Forum: Aircraft Power Only
Topic: O435 oil temperature / relief valve
Replies: 38
Views: 1542

O435 oil temperature / relief valve

Can someone explain to me how the oil relief valve cooler bypass operates on o435. I'm wondering about the main relief valve that is also the oil cooler bypass located on the sump. My boat gets hot after about 30 minutes of riding (2100 rpm) temperature rises to around 220 so I pull over and drink a...

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