slamn sammy

Good Q? I don't know? I rounded both ends and tapered the end on the lifter end. The push rods I made are hard and short. Will find out in time if it will work?

SrTelemaster150

Just watch the valve lash for a while. Since the ends weren't precisely machined to the original spec, there will probably be some initial "seating" as the part contact points between the tappets & rockers seat them selves in. If valve lash continues to increase after an hour or more run time, there might be an issue W/proper hardness.

If you ever dismantle the valve train, make sure you mark the pushrods to assure they get back into the right location.

Cougar429

My Feedback: (3)

From personal experience Allen wrenches are not hardened that much. Still may be enough for your app as there should be no side loads. You should be able to determine their wear properties easily enough by regularly checking cold lash. If opening up they are likely suffering.

If that is the case it would be prudent to also check the socket in the rocker arm. Not so much angular change on the cam followers. A lot more between the pushrod and rockers and likely where you would see it most. Hopefully any wear would be exclusive to the pushrods and not the more expensive arms.

Prelubing everything before firing it up would help a lot as you would then not be dependent on waiting for fuel mix to reach that point.

SrTelemaster150

GOOGLE SAI6539. They are available from e-bay, Amazon, etc.

FA-80 uses the same pushrods as the FA-65, they are readily available.

$3.71 from Advantage Hobby

http://www.advantagehobby.com/26670/...shrodsG-JRS-2/

FNQFLYER

charley, yes rolled threads in aluminium, very common in older aircraft such as Viscounts and Electras. (L188) Used as a stress relief medium and if not done can lead to catastrophes like a/c crashes. My girlfriend died in a Viscount crash (hostie) as a result of that plus incorrectly installed bushes for the wing attach bolts. I have only noted this on a few Saitos and that may have been done by some one other than Saito but I can assure you that I always use the tools I have had manufactured by a tool maker to do that to most engines I overhaul and that it not limited to Saitos.

FNQFLYER

Old fart, smart ar#e, I saw that comment.

the pope

You could use piano wire . I think the biggest problem would be if they were cut to length using a dremmel cut of wheel and the wire gets red hot . Keep it cool and it would probably be ok . Cheers the pope

Rudolph Hart

Here's me thinking that was the start of a good mafia story popey..

SrTelemaster150

Why go to all that when the parts can be bought for less an $4?

the pope

Thats why I wrote what I wrote !!!!!!!!!!!!!!! I could have gone on and on about converting it to ignition but that wouldnt have helped anyone unless you have insomnia !!!!!!!!!!!!!!!!!!!!!

the pope

Why bother with all that when the original parts can be had for $4 ?????????????

Cougar429

My Feedback: (3)

Too bad "Junkyard Wars" went off the air. Looks like we could have generated some serious ideas here.

the pope

Hey there O.F. sometimes I wouldnt mind being fitted with the ol cement shoes

slamn sammy

Thats all good thinking. Think i,m just going to order the right push rods to be safe.thanks for the web site ther Sr. I set the lash at .02 But! If i can get the right part, thats the wright way to go to b safe.

acdii

I would like to know how to roll threads on a nut. I know how threads are rolled on a bolt. The wire is put between two cutters and rolled between them, but how is it done for a nut?

Charley

My Feedback: (2)

I wonder if he meant knurled threads.

CR

FNQFLYER

Pratt &Whitney made the tool that is easily copied copied by a competent machinist / tool maker. Fortunately I had access to the later along with suitable material (Fokker F28 screw jacks) I really wish I was good ennough to do it for myself. For reference I can and do make the odd knurling tool

Rudolph Hart

Sammy i see your grammer and syntax(a word for co-hesion:0 to us hillbillys)is getting better,have you purchased a new keyboard?

Popey sometimes things can get a bit loaded up and you feel sad,crank a saito up and get a good whiff of methanol and 50% nitro up the left nostril mate

slamn sammy

LOL, No. Just sometimes l get lucky. LOL, I do live in Arkansas! And my wife is not my sister................ She,s my cousin! LOL (NOT)

Charley

My Feedback: (2)

I suspected it was knurled threads. I remembered from back when I was rebuilding automotive engines that there was a method for reclaiming iron valve guides by running a knurling tool through them. Then there was the practice of knurling the thrust faces of piston skirts in order to get a tighter fit in the bores. I never had any of that done because I didn't know how long those fixes would last.

CR

Hobbsy

My Feedback: (102)

CR, I never did that to any engine I rebuilt either, logic says that the knurled surface, the contact surface area in particular would be reduced/compromised leading to accelerated wear and oil consumption.

SrTelemaster150

Knurling the valve guide, (spiral) then reaming to spec is a common and accepted practice. Knurling piston skirts is a cheap fix that isn't generally acceptable unless there may be parts availability problems such as antique and/or rare engines.

blw

My Feedback: (3)

Sometimes you use what you have. If the Allen wrench works, then hats off to you. I'm still waiting for the Pope man to tell us where he was for 2 weeks. If you are getting down, talk to somebody. Do something crazy to get out of whatever tailspin you are experiencing.

OF- I remember when the Viscount was a lawn dart. That brings back memories. Kind of around the exploding DC-7s if I remember right.

slamn sammy

LOL! I grew up next door to Love Field airport in Dallas Texas whan they where still flying Dc-3's. We where setting on top of the house one day (boys and trees) and a DC-3 took off and one engine started popping and quit. Thank God it was the left enging (taking off from left to right and it did a wing over and ........ Well it was a mess! Not good for the pore folks on board. lt rained melted aluminum like paper for about 45Mins. l remember when we got the 707,s in. MAN, What a noise!!! Every 1 1/2 mins, 24-7. When we moved out the house was leaning to the right. Junk was falling out of the sky all the time. Then DFW came in and bought our grandpaw's farm and that was the end of fried chicken and watemelon on Sundays after church. MAN, the good old days!

Charley

My Feedback: (2)

The best thing about Love Field was that some of the most beautiful women in the world passed through there before they opened DFW.

Hay, do you remember when the city of Dallas tried to compel Southwest Airlines to move from Love Field to DFW?

CR