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-   -   1966 Corvette L72 Light Refresh (https://www.yenko.net/forum/showthread.php?t=181243)

67since67 04-15-2025 03:34 PM

Quote:

Originally Posted by Z282NV (Post 1670343)
Looking marvelous Tim. Darn snow, we escaped with just rain showers up here on the North shore of Lake Superior but with the ground still frozen it's has no where to go. Slippery as hell.

North shore??...are you in Thunderbay??

Z282NV 04-15-2025 10:50 PM

Quote:

Originally Posted by 67since67 (Post 1670351)
North shore??...are you in Thunderbay??

Yes Sir!

67since67 04-16-2025 12:14 AM

I have friends there, been there many times. The Fort William Gardens is one of my favorite old hockey barns! Do you know the Addouno family??

Sorry for the hyjack Tim...

Z282NV 04-16-2025 01:16 AM

Quote:

Originally Posted by 67since67 (Post 1670373)
I have friends there, been there many times. The Fort William Gardens is one of my favorite old hockey barns! Do you know the Addouno family??

Sorry for the hyjack Tim...

PM sent.

Yes sorry Tim for the sidetracking.

napa68 04-16-2025 02:17 AM

Quote:

Originally Posted by Z282NV (Post 1670375)
PM sent.

Yes sorry Tim for the sidetracking.

Quote:

Originally Posted by 67since67 (Post 1670373)
I have friends there, been there many times. The Fort William Gardens is one of my favorite old hockey barns! Do you know the Addouno family??

Sorry for the hyjack Tim...

No worries guys

MosportGreen66 04-16-2025 02:49 PM

Quote:

Originally Posted by napa68 (Post 1670329)
The master cylinder came back from White Post today, so I wasted no time getting that bled and installed. My goal of looking like nothing happened was achieved. I must admit, I was a bit disappointed with the experience. Originally, I was told 2-3 weeks when I shipped it in. I shipped it right away. That turned into 4-6 weeks after it arrived. Unless of course, I wanted to pay a 25% expedited fee. Given my scenario with a bad replacement M/C, the fee was the lesser of evil's. I kind of went over the edge with the $40 shipping and handling for regular ground UPS. Comparatively, it cost me $13 to ship it out there. I don't begrudge anyone of making a profit, and certainly value quality work. The experience though left me with a bit of a poor taste. I'll step off of the soap box now. Just thought I'd share........

So, I'm all set to hit the road. Naturally, I'm rewarded with a forecast containing 2-4" of snow tonight.
https://i.imgur.com/lBMKl6Wh.jpg

We had a similar experience with the master on our former '67 L36 Convertible and won't be going back to White Post because of it. Oh and our master did not work... twice.

67since67 04-16-2025 03:30 PM

As an alternative, I've received great service from Karp's Power Brake in Chino CA, both on masters and wheel cylinders.
IIRC, Karps uses stainless sleeves while WP uses brass??
WP has done one master for me that worked out well.
FWIW - Bill W

napa68 05-08-2025 07:54 PM

3 Attachment(s)
Bill S (olredalert) hooked me up with this virgin US Royal Laredo spare for the car. While the car has a good spare, now it has one that is gooder:grin:

TimG 05-08-2025 09:09 PM

That is a beauty. Laredos are the best.

67since67 05-08-2025 09:43 PM

That's a great home for a great tire!

olredalert 05-10-2025 10:53 PM

[QUOTE=olredalert;1671800]----Great! As usual on this great sight, this transaction between Tim and I went so smoothly. It was a pleasure finding a great home for this unbelievable spare. That's all I hoped for when I saw it at B. Gold. So hard to find any U.S.Royal 66 only whitewall in any condition. Can't wait to see the judges eyeballs when this spare tire is displayed!....Bill S

napa68 05-18-2025 06:02 PM

K66 T.I. Ignition Issue
 
1 Attachment(s)
Just a little update, with nothing more than a "technical experience". As I have been driving the 66 as of late, I had noticed the car had become a little more temperamental to start. I had a symptom where when the car was warm, the ignition would only fire when the switch was turned to run (as opposed to firing while cranking in the start position). That symptom increased little by little. Yesterday afternoon, I cold started the car, and the problem persisted. The ground is VERY good on the T.I. amp. Previously, I had checked my voltages as the coil, was well as looking for any resistance on the ground side of the T.I. amp. All were within spec.

I remember a while back, I had read some posts over on Corvette Forum where some of the others had complained about the same symptom, and blamed it on the brand of circuit board I installed in the T.I. amp.

Having nothing else to do today as a result of the weather, I thought I'd dive in. I was being a little lazy, and just reinstalled the original T.I. amp that was in the car when I received it. The car now cold started and hot starts just like it should......while cranking.

Most of the GM cars did not utilize the T.I. ignition as widely as Corvette's. Some of you though, have cars with this buggy whip ignition system. I just thought I'd post the experience for technical reference down the road for Yenko.net.

Enjoy the rest of your weekend. I myself now feel I've earned a cold beer:cool2:

napa68 06-09-2025 04:54 PM

Over the weekend of Bloomington Gold, I was able to connect with a friend of mine who made me a smoking deal on 2 gallons of lacquer. These were tinted to a verified original Nassau Blue car. Not that I plan on restoring this car, but thought it would be smart to capitalize on the opportunity. In the event I change my mind, have an ooops, or sell the car to someone who would restore it........ then it's here

https://i.imgur.com/J59Dg20h.jpg
https://i.imgur.com/2dDBr5Mh.jpg
https://i.imgur.com/pBq8zKZh.jpg

Z282NV 06-09-2025 05:05 PM

Quote:

Originally Posted by napa68 (Post 1673590)
Over the weekend of Bloomington Gold, I was able to connect with a friend of mine who made me a smoking deal on 2 gallons of lacquer. These were tinted to a verified original Nassau Blue car. Not that I plan on restoring this car, but thought it would be smart to capitalize on the opportunity. In the event I change my mind, have an ooops, or sell the car to someone who would restore it........ then it's here

You just never know if your are going to need it or not. Love the car just the way it is.

napa68 06-20-2025 08:21 PM

While waiting for a couple of new acquisitions to get delivered, I had some time to chase an item of concern on the 66. The engine had a detectable vibration above 4000 rpm. Not bad, but know it could be better. Historically, this car did have at least one clutch installed. I've had clutch / flywheel combinations that were out of balance exhibit this same trait, so I pulled the trans and clutch this week. My clutch of choice in recent years has been the McLeod Street Level Kit. They just do not chatter. I send the flywheel out to be machined and have pressure plate to be balanced together. The flywheel is the original dated unit, and had never been machined before. 2 days later, I got everything back and was pleased to find some drill marks to balance the flywheel, albeit not very much:biggthumpup:

https://i.imgur.com/zMGNjSqh.jpg
https://i.imgur.com/nleoNzSh.jpg

While waiting for the balancing act:smile:, I got all the fasteners and parts cleaned up for reassembly. This particular pressure plate required some weight. Sometimes they are neutral, others require some drilling along the flange to lighten it up. I could probably say that is just the current state of quality today.

https://i.imgur.com/QNc6AjJh.jpg
https://i.imgur.com/niVX7Ibh.jpg
https://i.imgur.com/7s0ZtnSh.jpg

I may show some bias here, but I think the 64-67 Corvette shifter is one of the best, OE or aftermarket. When these shifters are right, they just plain work. I cleaned all of the old grease out of the shifter, regreased it, and mocked it up on the trans. The OE Corvette shifter starting in 65 has and adjustment for a shorter throw. So, I adjusted everything on the bench.

https://i.imgur.com/Swp8Hx6h.jpg

I use a complete input shaft, as it gives me a bit more leverage when sneaking up in the pressure plate torque. I am of the opinion it can get a better feel for the disc alignment. The trans just drops in when I do that.

https://i.imgur.com/MRUr14Qh.jpg

My vibration is GREATLY diminished. Next, address the cooling system. The temp just continues to creep up to about 230 degrees now that we have summer temps. The radiator will need some love, so that is next on the docket.

Too Many Projects 06-20-2025 10:14 PM

And it just keeps on gettin' better...:grin: I only use an old input shaft for clutch install too. Those plastic plugs can be a PITA to get right. I have one for M22 also.
I'm trying hard to not like this car too much, like the L88 Camaro, but everytime I see that White interior with the Blue, I have to look away. :no: It's like trying to resist forbidden fruit.

olredalert 06-20-2025 11:32 PM

----Short throw when done on the bench is a really great shift! I did my 1st Corvette (66 427/425) after I read the Corvette news issue article. As a young punk I waded thru that adjustment while in the car. Back then it was way above my paygrade, but I managed and felt like the king of the world when I could actually go thru the gears cleanly!.....Bill S

napa68 10-10-2025 06:21 PM

New update on the "light refresh":grin:

I finally got the wheels installed.......
https://i.imgur.com/u2tE6lXh.jpg


More updates to come on this one:beers:

TimG 10-10-2025 09:25 PM

Stunning, just stunning.

MJV1953 10-11-2025 03:29 AM

Love the knock offs!

napa68 10-11-2025 04:47 PM

No project is ever really finished.....right?

I put on over 400 miles on the 66 this year. It's a wonderful driving car and I can just look at it for hours. But, I had mentioned I was chasing a vibration in the engine. It improved with the clutch installation / balancing but still was not right. I know someone was in the engine prior to my ownership. I do not want to run the risk of hurting the engine in any way. So in the name of doing things right, out it comes. I spoke with my engine builder early this week, and he can get on it right away.

https://i.imgur.com/t8KD5L4h.jpg
https://i.imgur.com/GWDPK9wh.jpg
https://i.imgur.com/7hkXk1Xh.jpg
https://i.imgur.com/KifEwfLh.jpg
https://i.imgur.com/r4vNUuKh.jpg

I must admit the oil and filter look good, as do the plugs. In fact, they may be a bit on the lean side. That's easy to fix. Another plus it is not chewing any oil
https://i.imgur.com/kihySdXh.jpg

The transmission is quiet and upshifts / downshifts just as it should. I am shipping it to the fellow who has been doing my T10's for me. He's going to take a look inside, check it over and check the shafts any twist, runout and reseal.
https://i.imgur.com/X9pISAGh.jpg

I'm going to pop the tin off the engine and see what I can see. Having the car apart like this will allow me to take another kick at the can for cleaning. Updates to follow

scuncio 10-11-2025 05:45 PM

Man, bummer but you'll be able to sleep better at night having gone through it.

Is AMS doing this one too?

napa68 10-11-2025 05:52 PM

Quote:

Originally Posted by scuncio (Post 1680964)
Man, bummer but you'll be able to sleep better at night having gone through it.

Is AMS doing this one too?

Going to AMS. Steve has slowed down in recent years. Luckily, I'm still on the list of people who he will do work for.

67since67 10-11-2025 05:53 PM

Can't leave anything alone, can you Tim?! :shocked:

Guessing you got on this just this morning?? You're having too much fun!!

scuncio 10-11-2025 05:53 PM

Gotcha, yes, he has been in business a long time. I doubt he remembers, but just for the heck of it, please tell him the 350 he built for Paul Nausieda's black 1977 Caprice coupe (he also installed the engine into the car for my dad) is still running great. That install must have been 1992-3 timeframe.

napa68 10-11-2025 06:10 PM

Quote:

Originally Posted by 67since67 (Post 1680966)
Can't leave anything alone, can you Tim?! :shocked:

Guessing you got on this just this morning?? You're having too much fun!!

Yesterday and today. My Dad stopped by to help pull the hood and provide an extra set of hands pulling it. I asked him if he wanted a beer at 10am when we were done.....he declined:smile: I'll catch up with him this afternoon;)

napa68 10-11-2025 06:29 PM

While waiting transport to show up and get the yellow 67 coupe, I popped the pan off to take a little look around. The bright side, all the rods look to be standard issue L72 units, properly stamped when rebuilt along with a forged crank. The block looks to not have suffered any trauma previously. The cam looks nice as well. The pistons in this were indeed changed to forged TRW's (L2300F's). That yields a 10.2:1 compression ratio with these heads. After careful inspection of all the pistons, the engine is currently at .060. Not quite the news I was looking for, but it is what it is. On the bright side, if it does need to be bored.......070 pistons are readily available as are .100's. When AMS did the L88 for me, he told me an early 427 can safely go to .125 over.

The crank is a 6223 casting which looks to be a 396 or later 427 unit. Some internet sleuthing has allowed me the opinion it takes a little more work to get the 6223 crank balanced properly with the additional weight of the 427 pistons. That is all uneducated speculation on my part.

https://i.imgur.com/MVgGuKgh.jpg
https://i.imgur.com/FmsUPkDh.jpg
https://i.imgur.com/mBBvcIKh.jpg

Tuna Joe 10-11-2025 06:45 PM

Curious what are your plans for the engine compartment? Just clean?
Or clean and paint?
I’m at the same point in my 68’ L89. Engine is out and want to do something to the engine compartment, but want to minimize the mission creep.

scuncio 10-11-2025 06:49 PM

I have built two 427s with 6223 cranks and neither required anything dramatic to balance.

napa68 10-11-2025 06:50 PM

Quote:

Originally Posted by Tuna Joe (Post 1680975)
Curious what are your plans for the engine compartment? Just clean?
Or clean and paint?
I’m at the same point in my 68’ L89. Engine is out and want to do something to the engine compartment, but want to minimize the mission creep.

Just clean. If I start painting anything it will stick out like a sore thumb. I have some methods I have gone about handling the engine paint, so it is not so obvious. And then to your point, the next thing you know the frame is out from underneath it and the body is in the paint booth.

Tuna Joe 10-11-2025 07:24 PM

Quote:

Originally Posted by napa68 (Post 1680977)
Just clean. If I start painting anything it will stick out like a sore thumb. I have some methods I have gone about handling the engine paint, so it is not so obvious. And then to your point, the next thing you know the frame is out from underneath it and the body is in the paint booth.

Thank you Tim!
I don’t post much, but I sure learn a bunch from your posts. So thank you.
Also, love that trans stand. Did you make it?

napa68 10-11-2025 07:34 PM

Quote:

Originally Posted by Tuna Joe (Post 1680979)
Thank you Tim!
I don’t post much, but I sure learn a bunch from your posts. So thank you.
Also, love that trans stand. Did you make it?

I bought a couple of those off of eBay years ago. They came from Roush Fenway Racing. Extra handy!

luzl78 10-11-2025 10:48 PM

the engine will hum once its balanced and blueprinted.

SupremeDeluxe 10-11-2025 11:32 PM

As we discussed, totally sucks about the engine vibration, but at least you have someone you can TRUST to build it correctly. These days you can't seem to achieve a good outcome regardless of how much money you part with.

I was leaning on the 63 a little harder than usual today, and thinking how I have no idea what's inside of it. Clearly it was rebuilt at some point (and the balance is perfect), but it's still technically a mystery. Now you will KNOW what is inside and can drive without fear.

RPOLS3 10-13-2025 05:22 PM

Quote:

Originally Posted by napa68 (Post 1680977)
the next thing you know the frame is out from underneath it and the body is in the paint booth.

:hmmm::hmmm::hmmm: can I now heckle back at you buddy?

Old cars are great.........until they're not.

napa68 10-13-2025 05:30 PM

Quote:

Originally Posted by RPOLS3 (Post 1681073)
:hmmm::hmmm::hmmm: can I now heckle back at you buddy?

Old cars are great.........until they're not.

I suspect I have that coming:hmmm:

napa68 10-13-2025 05:36 PM

The inside continue to look good.....

https://i.imgur.com/9k0IS36h.jpg
https://i.imgur.com/ZAgQF6ah.jpg

I'd say the valve seals and guides are doing their job. This is consistent among all of the ports
https://i.imgur.com/hybIKtnh.jpg
https://i.imgur.com/Ne5BVWqh.jpg

I find the intake manifold date interesting among all of the other casting dates
https://i.imgur.com/ng4mFz3h.jpg
https://i.imgur.com/Qi5GroHh.jpg
https://i.imgur.com/D3tkzlHh.jpg
https://i.imgur.com/RTSmjZRh.jpg

Too Many Projects 10-13-2025 06:47 PM

Quote:

Originally Posted by RPOLS3 (Post 1681073)
:hmmm::hmmm::hmmm: can I now heckle back at you buddy?


https://s3.amazonaws.com/emoticon.ac...vKFMuewJX0E%3D... You go, Jake... :laugh:

RPOLS3 10-13-2025 07:05 PM

Quote:

Originally Posted by napa68 (Post 1681074)
I suspect I have that coming:hmmm:

In all seriousness this will be another amazing car when you are done - taking it to another level as you always do. Much of what I've done on the 409 was inspired by they way you go about things. Can't wait to talk about this build with you over a beer at MCACN. :beers:

napa68 10-21-2025 06:00 PM

Just working on tedious little things today. I'm headed out tomorrow for 5 days, so I'm not getting into anything too serious.

The spark plug barrels were corroded, along with some fasteners. I continue to experiment with the heated ultrasonic cleaner and Evaporust, in addition to Purple Power. I'm thinking I am going to get a couple more larger units. One for Purple Power and one for Evaporust.

https://i.imgur.com/izY2vFdh.jpg
https://i.imgur.com/iMSKBsxh.jpg

I pulled the original starter apart just to inspect and clean. Everything looked awesome inside with the exception of the washer on the commutator end. No biggie, I've got one on the way.

https://i.imgur.com/1vxnfqph.jpg
https://i.imgur.com/snKUti3h.jpg
https://i.imgur.com/1H9p87Fh.jpg


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