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15 days ago
Frog
Thank you for the input. I'll think I'll just leave them in place.
Forum: Corvair Center Forum
17 days ago
Frog
I'm getting ready to mount my cylinder heads to the case of my '64 500 Coupe. Both of the automatic-choke coils have a thin layer of rust on them, but they are nice and springy. With that being said, can I presume they will still function as designed, or should I buy new ones and agonize over the prospect of having to remove the old brackets? Thank you. Frog
Forum: Corvair Center Forum
2 months ago
Frog
Wagon, you are the Master. In your words: " . . . there never was a problem . . . not used to friction of a new motor and/or using too short of a lever." I re-reinstalled the pistons, torqued them, then used the proper tool--my beam-type torque wrench--on the crank bolt. Breakaway and rotation torques fell within those shown on the forum. I'm happy. Thank ALL of you for your input.
Forum: Corvair Center Forum
2 months ago
Frog
Rowin4, good to know it doesn't matter which way I rotate the engine to check torque breakaway and torque rotation; I don't know why I was concerned about that. I've meticulously checked to make sure rod-cap tops match up. Ya know, Noel, now that I've got everything untogether, I'm going recheck bearing clearances with Plastiqage. Might as well, since I'm obviously in no hurry to get this engi
Forum: Corvair Center Forum
2 months ago
Frog
rowin4, I am going to follow the advice of the much wiser than I. I've disconnected everything from the crankshaft and will check the breakaway and rotation torque on each piston as I go. I'll be doing this right after I torque down the crank bolt tight enough so that it doesn't back out on me when I turn it CCW using my breaker-bar-type tool with a beam-type torque indicator on it. I
Forum: Corvair Center Forum
2 months ago
Frog
Took three pistons to my mechanic in Tiger, Georgia; he said they all look good. Frog
Forum: Corvair Center Forum
2 months ago
Frog
J.O., Regarding your comment about installing the rings; I installed them from the top and the 3-piece oil ring set slid into the cylinders with no problem. I know, "there's no such thing as a dumb question," so here goes: Does it matter which direction I rotate the engine when I'm testing the torque? The reason I ask this is because if I have to rotate it in its operating direction of counter
Forum: Corvair Center Forum
2 months ago
Frog
J.O., I agree, something's too tight. After clamping my case together (to specs) with camshaft and crankshaft installed, I could rotate the crank using one finger. Even after installing number one cylinder and piston set to degree the cam, I could rotate the crank very easily. I had not torqued the cap nuts and did not have rings installed on the piston for the degreeing procedure. Came
Forum: Corvair Center Forum
2 months ago
Frog
Jeez. Yes, I meant bearings.
Forum: Corvair Center Forum
2 months ago
Frog
Thank you for your comments. I considered your suggestion, MattNall. I know you have years of experience on these issues, but here's what I'm thinking will happen if I bolted on the starter and pushed the button: something breaks, somewhere . . . so . . . I'm going to take J.O.'s and Don's suggestion, and break it down and start over by cleaning the crank journals and bearings, then use the as
Forum: Corvair Center Forum
2 months ago
Frog
My cylinders where well oiled when I installed the pistons, and the crank journals had a film of motor oil/STP combination on them. After installation of each piston/rod/cylinder set, I checked "ease" of turning the engine using the crankshaft pulley (no harmonic balancer). After installing set #1 and #2, I turned the whole caboodle using the crank pulley with what I thought was an excessiv
Forum: Corvair Center Forum
2 months ago
Frog
Excellent. Thank you. Frog
Forum: Corvair Center Forum
2 months ago
Frog
Jim Brandberg wrote: "I took the 1/8" punch and whacked the crankcase on each side of the split and the leak stopped right before my eyes." I would really like to see exactly WHERE you whacked the case seam with that 1/8-inch punch, and at what angle. It sounds like some great advice for the future. Thank you. Frog
Forum: Corvair Center Forum
3 months ago
Frog
Thank you, Frank. While we're on the subject of bell-housing bolts: I received last week a set of bell-housing-to-case bolts from Clark's. That's why all the questions I've been presenting. Following Clark's instructions, the two long bolts go in holes #1 and 2; two short bolts go into holes #3 and 4--none with washers. Washers on the other five bolts, though. Well, guess what? The two l
Forum: Corvair Center Forum
3 months ago
Frog
Regarding the bell-housing bolts to case, is this the general agreement, nowadays? Posted by: Wagon Master () Date: June 10, 2011 05:15AM Thread sealer on the bottom most two, anti-seize on the rest. Sealer for sure on the flywheel to crank bolts. As insurance run a SMALL bead where the crank hub meets the crank (on the circle where the key is) Does the term "thread sealer" mean a "thre
Forum: Corvair Center Forum
3 months ago
Frog
Attachment points on this setup are at the sides rather than at the top of the bell housing. I'm guessing that this mounting arrangement was made because they intend to attach the flywheel and starter later while the engine is mounted on the stand; in other words--start it. Frog
Forum: Corvair Center Forum
3 months ago
Frog
That makes sense. I visualize the weight an entire Corvair engine being supported by nothing more than the top two bolt holes of the bell housing. I shudder at that scene, but I know there have been no reported failures of the bell-housing bolt holes, or stripping of the bolts. Thank you. Frog
Forum: Corvair Center Forum
3 months ago
Frog
There's probably an obvious answer to this question: Is there one advantage over the other in attaching the engine to the engine stand by the bell housing, or by the bottom of the case? Just wondering. Frog
Forum: Corvair Center Forum
3 months ago
Frog
Saw this comment: >> Posted by: Ray W () Date: July 21, 2015 07:34PM Checked with feeler gauge between gear and washer and got .003". << ------------------------------------------------------------- Ray W was talking about the thrust washer on the camshaft. Where do I look to see the thrust washer? From underneath? I'm concerned that the camshaft end play seems to be .0
Forum: Corvair Center Forum
3 months ago
Frog
I understand that you're saying that the thrust washer's spinning or not, is not an issue. That brings me to trying to determine the end play of the camshaft. Seems I cannot detect any end play whatsoever. I'm not sure what to do. I would like the sage advice of the experts out there. Thank you. Frog
Forum: Corvair Center Forum
3 months ago
Frog
Thank you for the information. Frog
Forum: Corvair Center Forum
3 months ago
Frog
Here is a post from a couple of years ago. It is part of a topic that discuses camshaft end-play issues. "Does cam thrust washer need to be tight on the camshaft?" Posted by: Ray W () Date: July 20, 2015 07:44PM Seems like a dumb question, but I just started to put my engine back together and this looks like another needless delay if the cam needs to be returned to be put back togethe
Forum: Corvair Center Forum
3 months ago
Frog
Thank you for the empathy, Noel. You'd've thought I would've seen that there were TWO rings stuck together simply by looking halfway closely at the photograph I took. I think this is a case of "overthinking" an issue. Frog
Forum: Corvair Center Forum
3 months ago
Frog
NEVER MIND. WHAT AN IDIOT. What I thought was a ring that has overlapped ends, is actually two rings stuck together by surface tension. My seventy-four years are catching up to me. Too bad there's not an easy way to delete a post. Frog
Forum: Corvair Center Forum
3 months ago
Frog
Upon taking a closer look the image of the oil ring in the cylinder, It occurred to me that the measurement would be taken between the obvious gaps, there. I hadn't taken a measurement, yet, but the gap looks very large to me. Maybe .055" will do it. I'm on my way to take that measurement, now. Frog
Forum: Corvair Center Forum
3 months ago
Frog
Gapping and filing the two compression rings is straightforward to me; the oil-ring characteristic has thrown me. I bought a Grant ring set from Clark's (C7418A+20). The ends of the oil rings overlap and I'm trying to figure out how to measure the gap (015-.055) considering what the overlap looks like installed in the piston. Also, the rings seem rather delicate compared to the weight and f
Forum: Corvair Center Forum
3 months ago
Frog
.256" for each.
Forum: Corvair Center Forum
3 months ago
Frog
Assuming I do it correctly, each time I perform the procedure I come up with the same result: my figures don't match the published specs for my camshaft. That being said, here are the numbers: published specs are first, mine are underneath: Intake opens at 7 degrees ATDC; closes at 18 ABDC Intake opens at 7 degrees ATDC; closes at 27 ABDC Exhaust opens at 28 degrees BBDC; closes at 17 B
Forum: Corvair Center Forum
4 months ago
Frog
Closed up case and performed the "actual TDC" procedure after installing #1 and #2 cylinder/piston sets and came up with a near match to the timing mark on the oil pump/front housing. Then, I set everything up according to standing directives for intake-valve-open and -close specs; even followed along with Dave Motohead's instructional video. According to an email from Clark's and Bob Helt'
Forum: Corvair Center Forum
4 months ago
Frog
I dove into Bob Helt's The Classic Corvair, 10th Edition. On page 171 it says that a timing check is difficult on a stock cam since there are no factory specifications for the .050" tappet lift point. For estimates it refers to Table 15-1--Duration and Lift Specifications for Stock Camshafts (page 106). For my camshaft for a .050" tappet lift is says "7A-18" under "Intake Open" and "28-17B" un
Forum: Corvair Center Forum
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