A few motor mods for Kelly's Falcon

[wallaka]

I agree with that. The stock oiling system is pretty good. I think all that needs to be done really is a bit of chamfering, and smoothing out the passage between the block and head like described in the Handbook. I did that when building my engine. Though, it's no monster like yours...!

 

[Does10s]

....Though, it's no monster like yours...!

Monster?....not quite! It's just turbo'd.
Later,
Will

 

[Gene Fiore]

Hey Will,

Which cam are you running now in Kelley's motor?

 

[eeyore]

Will,

You said that you are running solid lifters, does that work with the Yella Terra rockers? I had thought that they were oiled from the lifters.

 

[drag-200stang]

Will,

Just because in person, as both you and Mustang geezer know, I'm a chatty kathy, I'm a little more shy on the internet.

What does the top of your new piston look like that gave the better burn pattern?

As you know, the 200 uses the same cam and I run the same 250 oil pump with the high volume 427 georotor with absolutely no issues. Just lock tight on the cam sprocket and rev it a lot higher.

Ak Miller always said the 250 had a chain whipping problem and that the 5/8" chain worked better than the 1".

Did the powdered metal crank gear tooth break off and then jam or break the chain?

This may sound crazy but maybe you need run a larger volume oil pump to dampen the harmonics of whipping back and forth. Is your oil pump drive shaft in good condition?

I believe your crank damper is liquid filled. Maybe it just doesn't work for what you're doing. Maybe some SFI rubber ones that could be modified to fit, would work better.

Some of the 250s timing chain covers have a rubbing block, maybe a custom made nylon shoe would prevent some of the chain whip.

I don't think stronger parts will help. You have to stop the harmonics of the crank and cam from whipping themselves to death.

That's why I think a gear drive and tightly tie the two together would work better or a belt drive that would absorb some of the harmonics. Didn't Ford performance at a one time offer a wet belt for the 302 that could be adapted?

FTF engine is similar in nature as far harmonics go. What's he using?

How's that for chatty?

 

[Does10s]

You said that you are running solid lifters, does that work with the Yella Terra rockers? I had thought that they were oiled from the lifters.

Eeyore,
Yes we're running solid lifters and the Yella Terra rocker arms. And Yes you're correct in that they need to be oiled via the pushrods. The lifters we're using are from ClassicInlines and are for the FE motor. They have the oiling hole in them.

What does the top of your new piston look like that gave the better burn pattern?

Drag-200,
It's nothing special! Just a much deeper and larger (in diameter) dish along with the piston is only .025" down in the hole vs. the old design at .100" And along with a thinner copper gasket seems to push the air/fuel mix into the center more.

Did the powdered metal crank gear tooth break off and then jam or break the chain?

A tooth did break off, very clean break too, but I don't know if it happened before or after the chain break. Also after the tear down, I haven't found the "complete" tooth yet. It has to be in the pan somewhere! It couldn't get passed the oil pick-up screen.

FTF engine is similar in nature as far harmonics go. What's he using?

As I remember the 300 uses gears....no chain. I have a Pete Jackson gear drive setup for the 302 that I'm going to see if I can get it to work. A Jesel belt drive would be WAY cool, but they aren't cheap and we still would need to custom build....everything! So we'll see.

Later,
Will

 

[wsa111]

Will Said

Yes we're running solid lifters and the Yella Terra rocker arms. And Yes you're correct in that they need to be oiled via the pushrods. The lifters we're using are from ClassicInlines and are for the FE motor. They have the oiling hole in them

Will unless the 250" is different than the 200" other than a different length pushrod, when using the yella-terra rockers on a 200" the oiling lifter is from a 302 or a 351 engine which is .150" taller than the stock lifter.

These oil through SBF replacement lifters fit all 170/200/250ci engines with solid lifter camshafts. However they are only required when using Yella Terra Full Roller Rockers (see Rocker Arms-From Mikes web site.

My choice is a solid lifter from comp cams which has a .012" oiling orifice in the lifter face for better camshaft lubrication if you are using high spring rates. The oiling hole is for solid lifters only.

The part # is a 817-12 . Bill

 

[Does10s]

Bill,
I just order them up from Mike and they show up at my front door!
Later,
Will