Ea 82 screwed up timing

[breaffyaviation]

Is there any way to time the camshafts on an 82 when you have no flywheel or bellhousing timing marks to start with.I converted the engine for aircraft,threw away the bellhousing,made a light weight flywheel,mounted this on my crankshaft pulley, fitted my starter on the front of the engine,Suzuki alternator,holly carb etc and everything worked fine until I bust my timing belt driving sprocket.Now I'm screwed.There are no soobs that I know of near me,Otherwise I could line up the flywheel on a similar car with the marks and see where the camshaft marks finish up .A chisel mark on my crank would do for future reference.Any ideas anybody?I have run out.Any help appreciated.

Jude

[MudisFun]

Look at the valves... Each cam only has 1 rotation per 2 engine rotations. Line up the second cyl, crank dot up, 1st cam dot up. Next crank dot up, 1st cam dot down, 2nd cam dot up. Watching the valves should give you an idea for the disty. Once the engine holds a fire then ear the timing down to a nice hum. I think you are only asking for location marks but all I can do is say that you no longer have any chance of using the flywheel but you should still be able to get her to run.

[torxxx]

you are running an EA82 in an airplane? You got balls of steel man. thats crazy.. keep an eye on those timing belts..

[breaffyaviation]

We got nothing around for 500 miles but big flat empty cornfields.

 

Jude

[Skip]

breaffy

I am going to assume you would know how to set the cam shafts (one dot up one dot down)

 

if you had the orig. flywheel on and set at the middle mark of the three belt timing marks

 

this obviously also sets the distributor if you have not removed it.

 

so how to find this crankshaft position.

 

Simple Subaru elegance really,

 

this crankshaft position is the position where

all four pistons are sitting half way in their travel.

 

Read all at the same point in their respective cylinder.

 

A thin probe inserted through the spark plug hole can be used to measure piston location,

bring #1 up and over TDC and then measure until #2 and #1 are at equal points.

 

Remember the two pistons on each side move in tandem.

 

Hope this helps.

Good luck, please post pictures of your plane.

It's not a gyro is it?

[breaffyaviation]

Thanks to all for the help.Problem solved and running better than ever.Thanks in particular to Mudisfun and Skip for solving the problem and Moosans who supplied the bits.I will post some pictures as soon as I figure out how to do it.Skip wanted some info on the plane,Its basically an Avid A model (similar to a Cub) that someone abandoned,with a lot of work to be finished.I'm copying other peoples and largely making up the rest since plans or parts are not available.More later.

Again thanks to all.

Jude