Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-07-12 08:32 PM - Post#2212568
I decided to adjust the valves on my 48 today. Ran into some interesting problems with the engine. First of all, when I lined up the distributor rotor to the #1 position, I had no timing marks visible on the flywheel. I then pulled the engine over with the fan and finally found the timing ball. The timing mark is 90 degrees off the #1 position on the distributor. I'm assuming somebody's had the engine out, and, installed the flywheel incorrectly. I ended up setting the valves using the #1 and #6 position of the distributor rotor. I also discovered that I've got three rocker arms that don't quite line up with their valve stems, and, are made a little bit differently from the rest. Suspect they're out of a later model engine. I've also got an assortment of pushrods - looks like 3 different diameters. Oh well - When I put her back together, she runs great in spite of her little issues, and, the valve gear is getting oil OK. Guess I've have to go shopping for some replacement valve gear parts so I can replace this stuff next time I open the engine up.
Regards:
Oldengineer
Edited by Oldengineer on 04-07-12 08:33 PM. Reason for edit: No reason given.
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 2-28s313233
"3rd Year" Silver Supporting Member
Posts: 500
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04-08-12 09:44 AM - Post#2212743
In response to Oldengineer
If all the dowel pins are in the crankshaft, you can not put the flywheel on out of time. Although some one may have decided it was easier to put on with out the dowel pins. We never know what has been done in the past to these old cars. But it keeps it interesting.
Cleon
1928 Chevy touring
1942 Chevy Sport coupe
1949 Chevy Sport coupe
1954 Chevy Bel Air HTP
1970 El Camino
1971 Monte Carlo |
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 bobg1951chevy
"6th Year" Silver Supporting Member
Posts: 4858
Loc: Ellijay, GA
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04-08-12 11:23 AM - Post#2212777
In response to Oldengineer
If "daves 47" sees this post, he will give you some good insight,  since he just went through all valve adjustment procedures.
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-08-12 07:28 PM - Post#2212923
In response to bobg1951chevy
Thanks guys. Someone had to reassemble the engine with the flywheel out of location. The engine runs just fine after I got her back together.
Regards:
Oldengineer
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Daves4757
Contributor
Posts: 158
Age: 60
Loc: Mpls, MN
Reg: 06-11-11
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04-09-12 08:44 AM - Post#2213066
In response to Oldengineer
Hi Bob and "Oldengineer",
Pertaining to the flywheel...it is bolted on with 4 or 5 bolts and their is only one way it will bolt up cause the bolt holes are staggered...not perfectly equally spaced apart. Trust me....I checked and rechecked mined about 6 times. As long at the motor starts up well...and gives you good power with driving, I would leave alone. The only thing I would say is that someone pulled the flywheel off and pulled the dowl pins and put her together. By having different push rods and a few rocker arms, you know some things have changed.
Thanks and Bob...thanks again!!! she starts cold in 2 to 3 turns...runs down the road...50 mph GREAT!!!
Dave
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Daves4757
Contributor
Posts: 158
Age: 60
Loc: Mpls, MN
Reg: 06-11-11
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04-09-12 08:48 AM - Post#2213068
In response to Oldengineer
Just thought of something. You are looking at the bell housing opening on the passenger side correct? Bell housing will have two circle openings. Use the one next to your starter.
Thanks
Dave
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-09-12 07:16 PM - Post#2213310
In response to Daves4757
Daves47: Yes, I was using the hole in the bell housing on the passenger side. I've also got a line on the rockers and pushrods I need to put the valvetrain back into shape. The #2 Cylinder intake valve has an incorrect rocker arm installed as well. I'll check out the hole on the opposite side and see if that lines up with the distributor rotor Ok. I can't figure out how someone managed to get the flywheel on like it is. Thanks for your help.
Regards:
Oldengineer
Edited by Oldengineer on 04-09-12 07:18 PM. Reason for edit: No reason given.
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-09-12 08:38 PM - Post#2213342
In response to Oldengineer
Dave: I just went out with a flashlight and looked. I was using the wrong hole - didn't even know the other hole was there. I even got a neighbor who's been fooling with old Chevys for a long time, and, he didn't catch my mistake either - but - his car has a 235 in it. That mystery is solved. I get the stupid award for that one.
Regards:
Oldengineer 
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Daves4757
Contributor
Posts: 158
Age: 60
Loc: Mpls, MN
Reg: 06-11-11
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04-10-12 07:27 AM - Post#2213468
In response to Oldengineer
Oldengineer,
Glad to hear. 216 and 235 both have holes on both sides. The one on the starter side is the correct one to use. It should also have a little arrow / marker on the inside of the hole.
There are a few different ways people have told people over the years how to adjust rocker arms / lifters.
If you were getting lifter noise and after you adjusted them, the noise went away but runs rough, I would say you have them adjusted to tight.
I have a '59 235 motor with hydrauic lifters in my '47. I adjusted lifters after the motor was running and I have no noise....great power....and starts right up.
Please let me know if you need any other help. I would be happy to help in any way I can!!
Thanks
Dave
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-10-12 08:13 PM - Post#2213753
In response to Daves4757
Dave: When I slowed the idle speed down to normal, I was hearing one lifter tapping pretty loud. I set all of them to the high limit (.008 & .015), and, now I've got nice even clicking on all 12 valves and the engine runs great. Yeah, I found the little pointer OK. I really appreciate your help.
Regards:
Oldengineer
Edited by Oldengineer on 04-10-12 08:21 PM. Reason for edit: No reason given.
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 Keith_Knox
Moderator and "10th Year" Silver Supporting Member
Posts: 2721
Age: 71
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Reg: 04-02-00
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04-10-12 09:52 PM - Post#2213782
In response to Oldengineer
Does the ball and rotor show the correct positions now?
1948 Chevy Fleetmaster Coupe Purchased 6/2010.
1996 Chevy Monte Carlo
2002 Dodge Dakota Quad Cab
2013 F150 Crew Cab |
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Daves4757
Contributor
Posts: 158
Age: 60
Loc: Mpls, MN
Reg: 06-11-11
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04-11-12 07:22 AM - Post#2213855
In response to Oldengineer
Old engineer,
Glad you got her. That is great. I had two guys on Chevy Talk that really helped me and that was Bob and Keith.
It's great when things work out!!!
Thanks
Dave
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-11-12 07:29 PM - Post#2214113
In response to Keith_Knox
Keith:
I won't know for sure until Saturday until I get a chance to check things out. Going to pick up a replacement rocker and some push rods for her as well. I want to get rid of my one goofed up rocker and push rod.
Regards:
Oldengineer 
Edited by Oldengineer on 04-11-12 07:46 PM. Reason for edit: No reason given.
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-11-12 07:45 PM - Post#2214119
In response to Daves4757
Dave:
Thanks a ton for your help. I'd still be looking in the wrong hole! 
Regards:
Oldengineer
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Keith_Knox
Moderator and "10th Year" Silver Supporting Member
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04-11-12 10:41 PM - Post#2214167
In response to Oldengineer
A suggestion. Do one at time. If something happens you will know which one was changed.
1948 Chevy Fleetmaster Coupe Purchased 6/2010.
1996 Chevy Monte Carlo
2002 Dodge Dakota Quad Cab
2013 F150 Crew Cab |
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Daves4757
Contributor
Posts: 158
Age: 60
Loc: Mpls, MN
Reg: 06-11-11
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04-12-12 06:43 AM - Post#2214241
In response to Oldengineer
You are welcome!
Dave
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bobg1951chevy
"6th Year" Silver Supporting Member
Posts: 4858
Loc: Ellijay, GA
Reg: 02-18-08
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04-12-12 07:24 PM - Post#2214474
In response to Daves4757
Hi Bob and "Oldengineer",
Pertaining to the flywheel...it is bolted on with 4 or 5 bolts and their is only one way it will bolt up cause the bolt holes are staggered...not perfectly equally spaced apart. Trust me....I checked and rechecked mined about 6 times. As long at the motor starts up well...and gives you good power with driving, I would leave alone. The only thing I would say is that someone pulled the flywheel off and pulled the dowl pins and put her together. By having different push rods and a few rocker arms, you know some things have changed.
Thanks and Bob...thanks again!!! she starts cold in 2 to 3 turns...runs down the road...50 mph GREAT!!!
Dave
So good to hear the good news, Dave.
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bobg1951chevy
"6th Year" Silver Supporting Member
Posts: 4858
Loc: Ellijay, GA
Reg: 02-18-08
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04-12-12 07:28 PM - Post#2214476
In response to Keith_Knox
Does the ball and rotor show the correct positions now?
Paint the "ball" on the flywheel with a dab of white paint. So much easier to see with these old peepers.
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-12-12 07:51 PM - Post#2214486
In response to Keith_Knox
Keith:
One question - do I need to remove the push rod cover to change out a pushrod?? or - can I just drop it in while I've got the valve gear off??
Regards:
Oldengineer
Edited by Oldengineer on 04-12-12 07:52 PM. Reason for edit: No reason given.
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Keith_Knox
Moderator and "10th Year" Silver Supporting Member
Posts: 2721
Age: 71
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04-15-12 10:14 AM - Post#2215353
In response to Oldengineer
Should be able to drop the pushrod straight down. Then test by jacking the engine over to make sure the pushrod moves up and down.
1948 Chevy Fleetmaster Coupe Purchased 6/2010.
1996 Chevy Monte Carlo
2002 Dodge Dakota Quad Cab
2013 F150 Crew Cab |
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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04-17-12 09:24 PM - Post#2216389
In response to Keith_Knox
Keith: Thanks - I'll try that one night this week.
Regards:
Oldengineer
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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05-06-12 11:40 AM - Post#2223124
In response to Oldengineer
I changed out the bent pushrods last night and gave both the holes in the tops of the rockers and the valve stems a good dose of PV Blaster as well. I set the clearances loose, and, started her up. Eveything looks ok, and she ran fine. The one question I have is her lubrication up top. I appear to have good oil flow through the rocker shafts, with plenty dripping out of the rockers, some coming out of the little holes on top, and,some coming out of the return tube. My question is - how does this engine lube its valve stems - it didn't seem like any of the oil was getting to them. My other question is - since the shop manual doesn't really say - When I put the valve gear back together, I put the oil holes on the two rocker shafts that line up with the rocker arms pointing toward the bottom. Is that correct?? Just wanted to make sure before I reset the valves to final clearance and button eveything up.
Regards:
Oldengineer
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2-28s313233
"3rd Year" Silver Supporting Member
Posts: 500
Age: 76
Loc: DFW Texas
Reg: 02-24-05
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05-07-12 04:46 AM - Post#2223334
In response to Oldengineer
Yes, the oil holes in the shafts are on the bottom.If I remember correctly. The holes for the bolts that go through the shaft. are slightly differnt size on each side. So the bolts will only go in with the oil holes facing down.
Cleon
1928 Chevy touring
1942 Chevy Sport coupe
1949 Chevy Sport coupe
1954 Chevy Bel Air HTP
1970 El Camino
1971 Monte Carlo |
|
Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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05-07-12 06:45 PM - Post#2223587
In response to 2-28s313233
Thanks for the confirmation. Thought I had everything back together OK. I also found an article on line about how this engine oils its valvegear and mine seems to be doing its thing correctly.
Regards:
Oldengineer
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bobg1951chevy
"6th Year" Silver Supporting Member
Posts: 4858
Loc: Ellijay, GA
Reg: 02-18-08
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05-09-12 06:53 PM - Post#2224314
In response to Oldengineer
Do you know why you had bent pushrods ?
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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05-09-12 09:04 PM - Post#2224364
In response to bobg1951chevy
I think so. When I pulled the valve cover off a few weeks back, I discovered that I had 3 rocker arms that the geometry was incorrect. They were barely catching the valve stems enough to work the valves and didn't match the others in the engine. I also noticed the bent pushrod. I managed to score a complete set of valve gear and 12 correct pushrods for a 216. I took my valvegear off and replaced the 3 incorrect rockers. Then,when I pulled the bent pushrod out, it was larger in diameter than the others and hollow in the center. I suspect it was out of a hyd. lifter car. Anyway, last weekend I got eveything back together with the replacement pushrod in. I set the valves cold to loose clearance, gave all the valve stems and rocker arm oil holes a shot of PV Blaster, and cranked the engine up. She's oiling herself properly up top, and, ran great. Now, I've got the get her up to temperature and set the valves to the correct clearance. She seems to be happy now.
Regards:
Oldengineer
Edited by Oldengineer on 05-09-12 09:08 PM. Reason for edit: No reason given.
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bobg1951chevy
"6th Year" Silver Supporting Member
Posts: 4858
Loc: Ellijay, GA
Reg: 02-18-08
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05-10-12 09:38 PM - Post#2224683
In response to Oldengineer
Good
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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05-11-12 07:45 PM - Post#2225001
In response to bobg1951chevy
Thanks Bob. Tomorrow is set the valves day. I also put a fresh set of ignition wires and sparkplugs in.
Regards:
Oldengineer
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Oldengineer
Contributor
Posts: 391
Loc: Cross Lanes, WV
Reg: 08-16-10
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05-12-12 07:45 PM - Post#2225281
In response to Oldengineer
I warmed her up good, and, set her valves. She's purring like a kitten with nice even clicking noises on all valves. Engine is now all back together.
Regards:
Oldengineer
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Keith_Knox
Moderator and "10th Year" Silver Supporting Member
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05-12-12 09:42 PM - Post#2225305
In response to Oldengineer
Good to hear.
1948 Chevy Fleetmaster Coupe Purchased 6/2010.
1996 Chevy Monte Carlo
2002 Dodge Dakota Quad Cab
2013 F150 Crew Cab |
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