Built 302 engine valves? - Mustang Evolution

Go Back   Mustang Evolution > Ford Mustang | Wrenching, Care and General Topics > General Mustang Discussion



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 03-22-2010, 09:30 AM   #1
Registered Member
Regular
 
Join Date: Aug 2009
Posts: 44
Built 302 engine valves?

Okay, I got a 66 mustang with a built 302, I know this isn't the engine that was originally in it, but this car was made for the drag. My question is, I had to replaced my valve cover gaskets, since they were leaking, and Iv'e been hearing my valves ticking lately. So I figured I'd go ahead and attempt to adjust them. This engine has aftermarket parts all in it, It got some sort of aftermarket cam, it's got a lope sound to it. I dunno what kind. I believe it to be a solid lift cam though, since the valves are adjustable. It's got a hex type screw in the rocker arm, and a nut on the outerside. My question is, I was just screwing around a little with the rocker arms, I attempted to adjust the no 3 intake and exhaust valve by tightening it. Man, did I make a mistake, I tryed to start it, and it would turn over, but it would never start. So I keep messing with the valves on that cylinder, and still no luck, and once I had the carb on fire from messing with the valves. So Im trying to figure out how to get the car back to running now? It wont run or nothing, and it acted like it wanted to kick back a little, while I was starting. How can I adjust these valves for the car to run? I dont have any specs whatsoever on the cam. Maybe yall could give me like what number on the feeler gauge to adjust them to or what? Please help. UPDATE: Not too long ago, I adjusted the the no 3 intake and exhaust valves to 0.018 on the feeler gauge, and it started up and ran fine. So I thought I had it right, but then after about 10 mins of running I heard the valve that I adjusted im guessing it started chattering really loud, and felt like it was losing some of the power. But im guessing I dont have them the no 3 valves adjusted right. Can some one please tell me how they normally adjust a built engine with an aftermarket cam like what number for the feeler gauge? It would help a lot. I noticed that on this engine the valves have to be adjusted right, or it will not run at all. Serious answers please.
derrik is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-22-2010, 09:44 AM   #2
Registered Member
Regular
 
Join Date: Aug 2009
Posts: 40
Built 302 engine valves?

I also hope you didn't bend a valve. There is a way to check that,though. With the rocker arms loosened up completely, you can connect a leakdown gauge in the spark plug hole. Air pressure will pressurize the cylinder and if the valve is bent, that cylinder will not hold pressure.

On to the real problem. Without knowing for sure that these are solid lifters, this may be tough. Assuming they are, a safe valve lash setting is about .025" with the engine cold. It will run at this lash setting.

Pick a rocker arm to start with. With some help, or a remote starter button on your solenoid, press down on the rocker arm on the pushrod end with your finger. Bump the engine over until you feel that the lifter is all the way down in it's hole. It will go down and stay there until the cam lobe rotates back around. This is the base circle of the cam and has no lift. This is where valve lash is set.

Adjust the rocker with the .025" feeler gauge between the rocker and the valve tip. Tighten the lock nut and feel for some drag on the feeler gauge. No drag at all is too loose. Do this procedure on all the valves and you are set. Tip: mark each rocker as you are done with it with a permanent marker. This way you will know which ones are done.

Hope this helps.
rosswald is offline   Reply With Quote
Old 03-22-2010, 09:50 AM   #3
Registered Member
Regular
 
Join Date: Aug 2009
Posts: 41
Built 302 engine valves?

you probably got the valves too tight. try backing them off some and see if it starts. if it backfires then probably the push rods are bent.
eoghan is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-22-2010, 10:17 AM   #4
Registered Member
Regular
 
Join Date: Aug 2009
Posts: 29
Built 302 engine valves?

My friend says that you probably bent the valve, to check - take out the valve and roll the valve stem over glass, if it wobbles, it's bent. If that is the case you'll need to replace it (and if you find that this is your problem, e-mail me and i will get you in touch w/ my bud and he can help you with what all you need to do)
aescleah29 is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > Ford Mustang | Wrenching, Care and General Topics > General Mustang Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


» Like Us On Facebook



01:53 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.