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I believe they were a dealer installed option. My 72 has them, and the overrider bars. I don’t think they compliment the lines of a Z.

You care more about the circumference than the diameter. The difference in circumference between the 83mm and the 83.25mm ring is 0.785mm. If your current gap is .53 mm with the standard ring, then an 83.25mm ring would result in a .25 mm overlap. You would have to remove that overlap and then enough more to end up with the desired gap. That said, I have no idea if using the oversized rings would actually work or not. I'm just here for the math.

When I first got my Z I went to Zcar.com. Found it to be a place full of immature people. Stubbled on CZCC and really have to say that it’s kept me motivated to keep and make this Z great . You all are keeping these old cars alive. Found the Viper problem. Swapped coil packs.....no change. Didn’t have a Noid light so I decided to just swap injectors and the problem migrated to the #3 cylinder. These injectors are less money than the Z ones. Most of the parts are inexpensive. OEM Spark plugs were $1.28 ea. Coil pack $44 (5 coils per packs per). Replaced the ignition switch and it was $45. Sent from my iPhone using Tapatalk

I wanted to give a compliment to the caliber and quality of people that are regular contributors to this forum. Seems like many other car forum just don’t have the magic this one has. I have a 20 yr old Dodge Viper that was given to me by my father before he passed away a few years ago. It sat for at least 5 years in his barn so once I got it here it needed some TLC but ran great. This week I took it out to get inspected and then went and ran it pretty hard. As I pulled in the driveway I got a Check Engine light. My OBD2 reader flagged a #2 misfire. Well, I went and posted on one of the Viper forums expecting a similar group of folks as we have here on CZCC and wow what a disappointment. Some of the folks on there are pricks, providing snarky comments that just turned me off. Won’t ever post on there again. This is why some other forum die. They don’t welcome new members and provide marginal help with excess useless comments. So, this forum is great because we have great people here and like many of you I appreciate that and glad to be part of it. Happy New Years by the way! Sent from my iPhone using Tapatalk

I can assure you that at present, A-hole behavior of any type on Zcar.com is stepped on immediately. I have no patience with it. I delete it if appropriate, and the Ban button works just fine. One of the distressing parts of online behavior is that when someone isn't face to face with you, too many people let their keyboard override their common sense. I don't put up with that well. When the IZCC list lost its original server home at Harvard, I worked with Carl Beck and found a new home for it at Texas A&M. (Maybe around 1988 or so?) I've been involved in the online presence of Z-cars for a while. I agree, IZCC was a very nice group that played well together.

ZH, I don’t disagree but people in different parts of the world have different attitudes, mostly impacted by their surroundings. Spend a day in Baltimore or Miami then go to Billings Montana . If you can’t see this difference in the population then maybe I’m crazy. Ive been to every state in the last year but 5. When you grow up in a large metro area you see the world differently than a guy who grew up on a Iowa farm. In the south people use terms like Sir and Ma’am all the time. We have a recent large influx of people here in NC from NY since COVID hit and you cannot deny they have a different attitude about driving, and general patience. So while generalizing is generally not a great idea generalizing has some merits, I wouldn’t base it on looks but on upbringing . There are good and bad people everywhere like you said. I’m talking about how people act in public. I was in Japan on a the bullet train and we were watching a video on an iPad (low volume) and the conductor came and scolded us for being “disruptive”. People there are very respectful of the people around them even in the large cities like Tokyo. Again it’s about culture and upbringing. America isn’t the same everywhere. Sent from my iPhone using Tapatalk

Considering all you could look at it this way - standard rings will be slightly larger, better, than the worn-out rings you are replacing, just because they aren't worn. So you'll get a small amount of improved sealing. With a hone the new rings will seat and seal to the new bore but with a slightly too large gap. So, you'll be basically back to where you started, but with new bearings and whatever other work you're planning. Probably valve guides and seals and other things. So, overall, you'll probably be less smoky but it will run as well or better than it did when you took it apart. When the time comes in a couple of years, if you really have only put a few thousand miles on it, you can take it apart and do the bores and pistons and just leave the work you already did. Because the old work will still be almost new. Basically, just hone it and use new standard size rings, then finish the job in a few years. Or, odds are good, it will just run so well that you don't get back to it for ten years. Trying to fit oversize rings probably won't really buy you much, is what I'm saying. Although it would be interesting to try. I don't think you said if you ever heard the engine run or used it. How bad was it?

I don't think there's a down side to a big cam in a Z. Mine is ~15mm lift and it goes like a normal engine below 4k rpm and a not so normal engine above. No 'driveability' problems anywhere. You wont get the full benefit without exhaust, carb, head etc improvements but it won't hurt.

This is a nice forum - reminds me of the IZCC email list way back when.

Yes, speedway supply places in the US have splined hollow bars, it's such a simple and effective solution, plus there is the option of various size bars. Twin caliper brakes have advantages except for (unsprung) weight?

They're all in your basement Wild Bill.

I did a lot of looking and couldn't find anything M27x1.0 $60 seams really cheap to me when you look at the time it takes, the material and the fact that an M27x1.0 tap starts at about $50 up to $150 I found a piece of 1 1/2" steel hex stock 12" long that would cost about $50 to my door. Could only get 8 nuts or so out of that. You couldn't get me to machine one for $60 Not trying to be argumentative but these one off parts are really expensive to make.

It's been a long time since I've been up that way. Beautiful area but not close to anything Blown budget or not, I probably wouldn't pursue this path. It's pretty cheap to have a block machined. The piston rings are a wash either way but you would need new pistons. You need new bearings any way, so it doesn't add a lot of cost to just go ahead and redo the lower end right. If you try to do what you are suggesting you will end up paying twice to do basically the same work

I dunno. That orange paint, with the black wheels, looks like a Halloween jelly bean.

Finally received my digital to analogue tachometer converter. The Haltech sends a digital signal that needs to be converted into the old school coil signal for the tach to work properly. Pretty simple solution using one of these converters made by Gene. He’s on eBay and sells cool little gadgets like this for a reasonable price. https://www.ebay.ca/itm/142171581596

Me too! All my responses were search the the archives. They'd type more crap scolding me than a simple answer to my question. That's what brought me to classiczcars.com and I've been wrapped in with kindness ever since. Why waste time typing hateful responses to search myself instead of simply saying the firing order, 153624?

It looks like it might have had floor repairs, but what caught my eye was "unrestored" in the description of the car. You can clearly see overspray and paint flaking around the door jamb tag. Given what we have seen from "Beverly Hills" lately, I hope people look for another car.

Totally agree Granny. My thought is if you don’t like the post or can’t provide an appropriate comment then move on. Nobody is forcing you to respond. People say things behind a keyboard they would never say to you in person and it’s one of the problems with social media. Social media works on people like Wonder Women’s magic rope. Who you are is unveiled, where in the real world you might get a tooth knocked out for the comment, on the computer you can be the jerk you really are without real consequences. I hate to say this but as I get older I generally dislike the general population, I see more self absorbed, inconsiderate humans (worst are under 30). I see it the most when I’m at the airport traveling for my job. I get to do a lot of people watching and boy or boy are there some really losers out there. People are living in an alternate universe. You really see a difference around the country and the world . Worst people reside in the Southern CA, Las Vegas, (Vegas absolute worst followed by LA) areas who are a close second are NJ and NY. The south is pretty good and the mid-west are the best and most considerate. Europeans are less in your face and generally more considerate and less “me first”. You won’t see idiots in a European airport in their pajamas with slippers, blabbering out-loud on their phones so everyone can hear their conversation on speaker. I have a 10 day European work trip starting in Paris next month. Hopefully I’ll have my vaccine by then! All my older family members and wife already got it. Sent from my iPhone using Tapatalk

I was just about to say that😄 You're right, the juvenile snipping that goes on in many other forums can get awfully tiresome and that is one of the great things about this forum. It's our little corner of the internet where you can let your guard down. The #7 cylinder on my truck throws a misfire code at least once a year and I know it has eaten another coil, I keep a new coil on the shelf all the time for when it happens. No idea why it's only #7, the threads are clean, all the plug wires fairly new.

Assuming your threads are ok on your old nut, you can also just make a thin shim washer to put between it and the spacer behind it to move the place where the peen gap in the shaft lines up with the nut sleeve in a fresh spot when the nut torques up.

maxima vinegar soup

This reminds me a bit of this cartoon I used to watch as a kid called phineas and ferb were they would build crazy stuff and everybody asked "aren't you to jung to build (insert something crazy)?" and they would just reply with "yes..... yes we are" and continue building. As a Kid I never really spend much money on anything since the age of 5 to save up to someday buy a cool car. I also got some finencial help from my parents because they didnt want me to ride a motorcycle. And about the car yes it WAS really bad, lots of rust, bad suspension all around, bad wiring and so on...... Right now all of the structural rust has ben fixed the car has a complete new floor pan welded in by welder/chassis builder for free by trading him spare porsche 914 parts 😀 I can weld so I will repair the rest of the rust myself. I removed all of the suspension (A-arms, Struts, sway bar, steering, brakes) even the differential and tank everything got new bushings and all off the surface rust painstakingly removed so that I could paint all of it, while at It the underbody also got painted/undercoated. Aswell as the new bushings I also installed kyb gas struts because the old ones were not good. I also removed all of the rubber seals, all of the glass, all bodypanels, interior to restore. The dash was cracked so i used filler and lots of sanding to repair it all of the gauge glasses were so crappy that you couldn't see the gauges I removet them and polished until they were clear again. So I basically tore down the car to the bare chassis in a small garage with no lift so working with a jack and jack stands. "have you thaught this through?" well I think I am doing pretty ell for a 16 year old with a limided budget. This is no half a$$ed restoration! I already have all of the restored suspension, brakes, steering and differential installed, the car is getting ready for paint and removing the engine block (cylinder head and everything else is already removed). A restoration doesent have to be horrendously expensive if you do all of the work yourself and spend your money smart! I will upload a few pictures of the car so that you get an idea.

https://zcardepot.com/products/door-panel-card-set-black-240z-1970-73-new?_pos=2&_sid=fa947020c&_ss=r