Valve Adjusting Screws, Doesn't seem right |
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Valve Adjusting Screws, Doesn't seem right |
Rhodes71/914 |
Dec 26 2004, 10:43 PM
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#1
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
I'm putting back together a 2L I bought this fall. I did not split the case just new rings on the pistons. Took the heads to a local VW shop the guy cleaned them up and checked out the valves and told me they looked fairly new.
So I got the heads back on the engine and adjusted the valves. On cylinder #2 (left side of pic) I had to back the adjusting screws way out to get them correct. I have never seen them like this on any type IV I have done. Should I be concerned? And why so different than the others. Attached image(s) |
scotty914 |
Dec 26 2004, 10:52 PM
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#2
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suby torque rules Group: Members Posts: 1,525 Joined: 20-July 03 From: maryland, the land of 25 year Member No.: 924 |
check the push rod, if its not seated right it can do that
also is the cam pushing the push rod or did some one put spacers under the rockers to make up for a fly cut then leave em out on one side other wise it could be bad |
Aaron Cox |
Dec 26 2004, 11:08 PM
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#3
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) good suggestions... spaced rockers, unseated pushrod, wrong pushrods etc |
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SGB |
Dec 26 2004, 11:32 PM
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#4
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
I think its gotta be the rocker arm shims missing. In fact, it almost looks like they could both be stacked under the #3 rocker.
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Rhodes71/914 |
Dec 26 2004, 11:46 PM
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#5
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
First thing I checked was that the pushrods were seated correctly in the rockers. Pushrods all went back in the same place as they came from. There were no spaces at all under the rockers.
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Aaron Cox |
Dec 26 2004, 11:56 PM
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#6
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
PS: now would be a good reason to tap the head breather boss....install a barbed fitting (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
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Rhodes71/914 |
Dec 27 2004, 12:09 AM
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#7
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
More info please I think I've heard it talked about but (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) |
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Aaron Cox |
Dec 27 2004, 12:12 AM
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#8
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
1) drill 2) Tap 3) install barbed fitting for breather hose (these are off a 49 state 75 or76???) Attached image(s) |
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Rhodes71/914 |
Dec 27 2004, 12:19 AM
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#9
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
Ok so why drill and and tap when there is already a threaded hole there? What does this do for the head, that hole goes into the exhaust valve. Yes 75 engine.
Will have to remove head to to any drilling, tapping. Maybe I will have to anyway to solve my problem. Home from college Aaron? My first year in college it was fun going home, after that it was counting the days. |
Aaron Cox |
Dec 27 2004, 12:27 AM
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#10
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
that should be a breather port..... late model heads didnt have bosses on the for the breather hose.... it doesnt look threaded in the picture (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) College: yeah, love being home.... only a third done with freshman year :(PIC (IMG:http://www.rccauto.com/ebay/boss.jpg) do THIS - head breather.... (IMG:http://www.914world.com/bbs2/uploads/post-2-1102511026.jpg) |
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Rhodes71/914 |
Dec 27 2004, 12:38 AM
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#11
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
Oops should have paid more attention to what you circled in your picture, my bad.
What size do most use and where do you run the hose, looks like a good thing to do. |
SLITS |
Dec 27 2004, 08:30 AM
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#12
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
If the machine shop reground the valves and seats, they could have sunk these two valves way deep in the seats (in other words, time for valve/seat replacement). It generally costs extra if you want the valve stem heights all the same. Just a guess............. |
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Gary |
Dec 27 2004, 08:42 AM
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#13
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Senior Member Group: Members Posts: 744 Joined: 12-January 03 From: Mount Airy, MD Member No.: 134 Region Association: MidAtlantic Region |
Dude, It ain't the seated in the rockers part that's hard to see. It's the seated in the lifters part. I just went through this after pulling my pushrods and pushrod tubes to replace the O-rings. When you insert the pushrods down into the lifters, it's tricky to know that they're actually snuggled down in that lifter. Ajust the adjusting screws all the way back into the rocker, which should loosen up the pushrod from the lifter. Jiggle the pushrod up and down until it seats home. You'll get a nice"thunk" feel. From your pictures, it looks like the lifters are shimmed about the same side to side, and if you just had the shop clean up the valves rather than a full valve job, I wouldn't suspect hte seats. Sometimes it's the easy stuff that gets you (I hope that's the case for you!). |
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Rhodes71/914 |
Dec 27 2004, 11:04 AM
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#14
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
No machining was done to the valves or seats just a check.
I am going to pull the rockers off completely and make sure they are seated correctly on the lifter, thought I did the first time. Thanks everyone I'll let ya know. |
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Rhodes71/914 |
Dec 28 2004, 01:20 AM
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#15
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Glacier Group: Members Posts: 1,374 Joined: 8-August 04 From: End of the Road, Alaska Member No.: 2,482 |
Something wasn't seated correctly. Loosened the rockers, made sure the pushrods were seated correctly and tightened it back up.
Adjustment is in line with all the other cyl. I feel much better now. Hoping to make a dent in the transplant during the holidays. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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