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At Monterey I got judged down 2 points for each exhaust manifold center bolts because they had washers on them. I read in the 56-57 Judging reference that the washers were included. What's up with that.
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Re: 57 Exhaust Manifold bolt washers
Ed -
Only the end pairs of exhaust manifold bolts use the thick washers; it's not shown in the A.I.M., as they were installed at Flint Engine. The JG indicates that the french locks and washers are used only on the end bolt pairs (it also indicates that lock washers were used on the center bolts, which is incorrect - no washers of any kind were used under the center pair of bolts). -
Re: 57 Exhaust Manifold bolt washers
Ed,
4th Edition of the '56-'57 Judging Guide, Section 12. pg 52 says:"the manifold bolts use tab locks and washers on the front and rear bolt set (not on the center bolts)." Regards,Comment
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AND
The french lock tabs were NRVER bent over on radio delete Corvettes!
Dale.Comment
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Re: AND - Dale
Dale,
Your comment no doubt comes from your extensive knowledge, I have no doubt. It would be your mistake to take my question to you as a challange.
That said, it seems strange that radio delete french locks were not bent. And I would ask why? During line assembly those '56-'57 Corvettes equipped with radio's would reguire the two per side little right angle hangers off manifold bolts for the s.s. shield surrounding the spark plugs. Those with radio delete apparently did not need nor have these hangers installed. The next process (it seems) would have been to install and torque the exhaust to cylinder case bolts. On the line, after these were installed the french locks were bent over on the radio equipped cars and not on the radio delete cars? How much sense does this make? Could it be that you saw an original radio delete Corvette who's assembler left his station for an early lunch or weekend? Regards,Comment
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Re: AND - Dale
The engines came from Flint with exhaust manifolds installed but lock tabs un-bent.
The Dress Line at St. Louis was responsible for adding radio equipment to the engine. It was cost effective to eliminate the step requiring "un-bending" of french locks in order to install shielding hangers.
For radio equipped Corvettes the tabs were bent over after hangers were installed and on delete cars no attention was given in this area.
I wasn't there to see this operation. I'm relying on information from those who were.
Dale.Comment
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Re: 57 Exhaust Manifold bolt washers
Jim,
This has been a source of confusion for me on my 56 - the thick washers are used in addition to the right angle bracket for shielding? Since the bracket is about the same thickness as a washer, is the bracket used instead of a washer? My AIM is very hard to decipher on this issue. Thanks SteveComment
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Re: 57 Exhaust Manifold bolt washers
So, from all that I have read, and since my 57 is a radio delete car, the lock washers are located on the two end bolts, in front of the french locks, and the two outboard french lock end tabs are left open and not bent over. Correct me if I am wrong, or too thick to decipher all of the info I have read. Thanks again for the tech info. I got a 96.6 at Monterey and I am kicking myself for all of the little dings that could have been corrected prior to the judging. The big ones were a quartz clock, non-spiral chocks, and oh I forgot to say that the right front corner was smashed when the car came off the trailer. Thats another story.Comment
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Re: 57 Exhaust Manifold bolt washers-Ed
Ed,
You wrote: >
I am not intending to be picky, I would like to claify your wording.
The thick washers on the end bolts are not lock washers, just thick (in section) special washers. The locking of the bolt so that it cannot spin is achieved by the french locks. The french locks are installed closest to the head of the bolt. Dale stated his belief as to why radio delete french locks were not bent. This may be so. Possibly assembly inspectiors didn't care. I believe more research of original '56/'57 radio delete cars needs to be done (on more thing on my to-do list). Congratulations on your 99.6!
Your quartz clock presented an interest situation which I have since given thought to. Most likely it was noticed during Operations and a deductiom was made. I noticed it during the Interior judging and noted it in Section 10, Under Instrument Panel. I can't remember if my partner and I just noted this (the printed circut in the clock could be seen) or did make a deduction. This could have been a case where you may have received two deductions for the clock. I don't think we Interior Judges were in error do whatever we ultimately did (noted or deduction). However, I do revisit afterward these more unorthodox situations in my mind. Regards,Comment
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Re: 57 Exhaust Manifold bolt washers-Ed P.S.
Ed,
For whatever reason the part of my previous post which contained "you wrote" did not copy. I was referring to: "Lock wshers are located on the end bolts in front of the french locks." Regards,Comment
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Re: 57 Exhaust Manifold bolt washers
Steve,
I believe the exhaust bolts were removed and reinstalled in the following sequence of pieces. Closest to the bolt head was the french lock, next came the right angle hanger (on radio equipped cars), last the thick washer. Regards,Comment
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Thanks Much Jim *NM*
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