stuck on a pushrod
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 207
From: SoCal
Yes, the lifter should push the rod up after you push it down. When it's pressurized with oil, it will give a lot less; it has to push open the valve. With the correct length rod, as you bolt down the rocker arm, the gap should be completely taken up about 3/4 turn before the bolt is completely torqued down. When the bolt is torqued down, the parts should have some pressure on them.
I guess it's too late to measure the length of the Chevy valve stem, to compare to the stock Ford version? If the difference is too much, it might be necessary to change the rocker position to get the tips to line up, and then get the right length push rods to match. But that's going to be difficult with non-adjustable studs.
I guess it's too late to measure the length of the Chevy valve stem, to compare to the stock Ford version? If the difference is too much, it might be necessary to change the rocker position to get the tips to line up, and then get the right length push rods to match. But that's going to be difficult with non-adjustable studs.
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 199
Likes: 0
From: oklahoma
Yes, the lifter should push the rod up after you push it down. When it's pressurized with oil, it will give a lot less; it has to push open the valve. With the correct length rod, as you bolt down the rocker arm, the gap should be completely taken up about 3/4 turn before the bolt is completely torqued down. When the bolt is torqued down, the parts should have some pressure on them.
I guess it's too late to measure the length of the Chevy valve stem, to compare to the stock Ford version? If the difference is too much, it might be necessary to change the rocker position to get the tips to line up, and then get the right length push rods to match. But that's going to be difficult with non-adjustable studs.
I guess it's too late to measure the length of the Chevy valve stem, to compare to the stock Ford version? If the difference is too much, it might be necessary to change the rocker position to get the tips to line up, and then get the right length push rods to match. But that's going to be difficult with non-adjustable studs.
Should I just tear it down to the lifters, and make sure they are all pumped up and then start over? Some of them seem pumped up but others don't. Is there a place to get push rods at any length? On Jeggs web site for a ford 302 all I can find are the two sizes that I have already mentioned. Because thats all I have found I assume it has to be one of those sizes.
Thanks for all the help. Sorry if I'm a little slow this is my first build. I just don't want to be the guy that starts his motor the first time and everything breaks from not being put together right.
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 207
From: SoCal
Like I said, when you're checking the cold lash, you turn down the bolt until all the gap is taken up, and then you should be able to turn another 3/4 to 1 turn to torque it down. Any more, and the pushrods are probably too long, any less, they're probably a little too short. The lifters don't really need to be pumped up for that check; you will be pushing against their internal springs, and that should be fine.
I'm sorry that I'm only guessing here, based on my own experiences. I wish I could be more helpful.
I'm sorry that I'm only guessing here, based on my own experiences. I wish I could be more helpful.
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 199
Likes: 0
From: oklahoma
Had to swallow my pride. I caught a local engine builder in his garage last night. I stopped and asked him about my problem, turns out I have some kind of screw down rockers not non adjustable like I thought. He also gave me instructions on how to use the checker and exactly how many turns past zero lash. Supposed to take the checker back today so he can measure for me, I think he is gonna order the rods for me too.
I have know about this guy for some time, he is also the mayor of our little town. We have a chilli cook off here every year and he gives away one of his motors to the lucky winner of a drawing where you purchase the tickets to be drawn.
Just want to give thanks to him I'm not sure if he is a member of this forum or not but to John Barrett of John Barrett's Hot Rod Engines thanks for the help.
To all the guys on this forum thanks for your help as well, you may not think so but you guys helped alot.
I have know about this guy for some time, he is also the mayor of our little town. We have a chilli cook off here every year and he gives away one of his motors to the lucky winner of a drawing where you purchase the tickets to be drawn.
Just want to give thanks to him I'm not sure if he is a member of this forum or not but to John Barrett of John Barrett's Hot Rod Engines thanks for the help.
To all the guys on this forum thanks for your help as well, you may not think so but you guys helped alot.
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 199
Likes: 0
From: oklahoma
got the rods measured, they ended up being 6.950. Just got them in the motor today. That was the last major issue with finishing the motor. Now got to get the ignition wired, tranny lines ran, radiator installed ect. ect.
If anyone knows how to upload a video on here please let me know, I would like to post a video of the start up. Even if it goes bad I will still post it.
There are a few holes in the block that I'm not sure if they are supposed to be sealed off or not. Will get some pics of them and post asap.
If anyone knows how to upload a video on here please let me know, I would like to post a video of the start up. Even if it goes bad I will still post it.
There are a few holes in the block that I'm not sure if they are supposed to be sealed off or not. Will get some pics of them and post asap.
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 207
From: SoCal
If you can't figure out how to post videos here (I never did), post them on youtube and post a link here.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Thread
Thread Starter
Forum
Replies
Last Post
spikinfool05
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
6
Feb 17, 2014 08:22 AM
400944
Performance & General Engine Building
9
Oct 6, 2009 09:13 AM
bigdan1979f-250
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
4
Oct 19, 2006 10:53 AM
