zKars

And the big day has arrived. Dyno tuning completed. Big thank you to Jimmy Bailey and all the crew at VEX that made this day worthwhile.

Ok, things make more sense now. I pulled my little collection of speedo pinions, and found out what's what. The pinions are all the same diameter. What does vary, is the tooth count (we know that) and the ANGLE of the teeth across the gear. Fewer teeth, lower angle (compared to rotation axis). Pictures below show what I'm talking about. And, sigh, I found one of the plastic output shaft gears in my stash... Yellow 3.9, blue 3.7, white 3.54. And finally the answer to initial question, using the white 19 tooth 3.90 gear, 20 output shaft turns = 6.25 pinion turns. Now I have my VSS conversion.

Well someone in 2017 did a pretty well designed study on 10 of these new fangled high ZDDP oils intended for old classic cars such as ours. I know we have discussed this in the past, don't remember if we referenced this study before. My apologies if so. Results were surprising to the author. Hopefully it will shed light on the current "hype" on this topic and perhaps result in fewer scarred cams and rockers around these parts. https://onedrive.live.com/?authkey=!AHKKfKJ3E11RU1E&cid=FD59A041A3808BD5&id=FD59A041A3808BD5!1416&parId=FD59A041A3808BD5!207&o=OneUp Note: This contribution originally posted by a well known Z owner, Chickenman, on the510realm. http://www.the510realm.com/viewtopic.php?f=30&t=31832

Yes, the actual plastic hooks are 71 ish through 78. Go in the same place as the round chrome buttons. Not sure of the change over date, but no later than Jan 71 point. I suspect you can actually put a coat or hanger on the hooks and have them stay there, where as the buttons, well, not the way I drive....

Only 77-78 windows work. The entire window, regulator and guide tracks are different for these years than earlier ones. I have a couple of spares if worst comes to worst if you can't find any closer.

A fellow on FB (Mark Shep) just posted a quick article about how he replace his choke cable sheath and core wire. He showed poictures of what he had done and he gave us the URL of the company he found that supplied the wire and sheath. Just had a quick look, seems that have quite a bit of inventory. Should be useful to use in the future. http://www.controlcables.com/ He measured the stock sheath and told them what he needed and they set him up, so we don't have specific part numbers but now we have another vendor to somehow remember.

Oh that's amazing! How did I not think of that? (One track mind, that's how...) Thanks for that! Makes it a bit trickier to compute accurately with a worm. I don't think it matters how may turns of the screw the gear is made from, its got to do with the spacing or tooth angle or something too hard to compute or measure. Guess I'll have to do the work and turn a tranny and count tail shaft vs speedo rotations. Not like I don't have a few trannies laying around... Now if I can just remember what color gear I put in my tranny.... white I think.

I like the fuel pressure transducer. Great safety addition. BTW, I have been appropriately chastized and have updated my thread. Thanks for reminding me.

Waiting for someone to comment on the distributor cap.... Had problems in three areas. 1. Ignition noise (COP) killing the USB communication with the car running. Solved with better lower noise COP's (Audi R8 coil packs). 2. The fancy onesix Industries distributor replacement that gives you a combo crank and cam angle sensor could not provide a stable signal that HAltech could trigger on reliably. At this moment with very little trouble shooting I'm pretty sure it's a combo of noise and improper reluctor gaps. I've gone to a better system of a Hall sensors and missing tooth wheel on the crank and a single hall sensor in the dizzy to give me cam position. I running full secquential. I didn't like having crank angle on the dizzy shaft anyway. There is play in that there shaft..... 3. My in-ability to tighten fasteners properly. Loose electrical connections especially. SIgh....

I am a bad boy. Have not updated this thread for far too long. Shame shame. I'm nearing the end of the voyage. It has been frought with problems, big surprise, but the car is now running well enough to get it to my friends shop for a dyno tune next week. Plan on taking it to Vancouver for their All Japanese show on the 25th. You'll have to be satisfied with a few pictures for now.

Glad I had one handy. I'd want 1.5 times the diameter of the threads (M14) engaged for strength as a minimum. 21-22 mm, almost an inch. The threads are M14x1.5 LH and RH. There are vendors that have rod end solutions that might get you some more length. Techno toy tuning comes to mind.

When you're nearly 50, wrinkles are part of the package. Actually they are stock from the faxtory. You will find more if you look.

Not darn much to work with.... .

Side note, is it not interesting, how, given the number of speedo cog tooth counts there are out there for all the various diff ratio's, (yellow, blue, white, etc), that they all mesh properly with a single toothed gear on the transmission output shaft? Crazy how they made that work.... Or are all the different tooth count colored cogs different diameters as well, so the tooth spacing stays the same? The mysteries of the universe never end.

Crazy question. In a 4 or 5 speed trans, there is a plastic gear on the output shaft that drives the speedo cog. I need to know the number of teeth on that shaft gear. I've had several trannies apart in the past and recycled more of these shafts that I can remember, but never kept one! Why you ask? I have a electronic vehicle speed sensor on my 5 speed now, attached to the speedo cog output housing, and need to compute it's output frequency vs wheel speed. To get a ballpark number, I need the tooth count on the shaft gear to get the speed vs RPM data to enter into my Haltech tuning software. (I get my MPH from a GPS speedometer) If someone just happens to have a tranny apart and can count, it will save me some time at the dyno. Just to record this, I'm using a very special little dohicky made by a Toyota 4x4 offroad support company that came up with a lovely little low cost custom VSS that plugs directly onto the speedo cog housing of many Toyota's and quite conveniently many early Nissans's as well. Outputs the most perfect little 5v square wave. In case there are any others of you that are crazy enough to go DIY EFI in the future. Picture below.

A nylok style nut could also work just fine. As long as the taper of the joint is properly seated, the chances of it coming apart is pretty much 0. Remember how much work it was to get that joint apart. I have about 20 of those stock castle nuts I've saved for some darn reason, but hardly practical to mail you one...

Regarding how tight or close to "all the way in" the nut has to go, what matters is if the nut contacts the strut body top and locks it in place BEFORE the nut bottoms out. Nothing worse than a loose shock cartridge rattling around and driving you crazy. So as long as most of the threads are engaged, and the cartridge is locked in place, you're good.

Don't forget Throttle position sensor. You need the kind that gives continuously variable voltage over the throttle position rotation range, not the stock on/off style.

I think toilet sealing rings are beeswax. Cheap and plentiful. Sorry I had to stoop to a potty reference...

Careful folks. Consider carefully before changing major EFI components without having any control over the stock ECU to adjust fuel and AFM response curves to match. Larger throttle bodies without other corresponding changes will do little but reduce air velocity into the AFM. That flap that gets pushed around responds to air velocity....

I have some spray bars available. PM me or send me a note to z240@shaw.ca

Should you? No. Have I? of course. thread the nut on all the way. use a piece of hard wood to beat on, use a heavy hammer (2lb min), solid support for the strut. If you can't hit straight and hard, don't do it.

I think I have one. Can't check for a few days though. We are gallivanting around the great Canadian plains at the moment.

Just a note, the RT mount has a notch in one top corner so the bracket goes around the brake/fuel lines that come close in trans tunnel. T3's mount shows the notch. Also, as long as you don't use a GM poly mount (shown in the pic above) to hang your diff from the RT mount, rather just use a snubber above the diff to "squeeze" the diff nose against the snubber/top of RT mount, and continue to use the stock cross member to mount the diff, drive shaft angles are not altered much over stock. You use one of the Energy suspension generic stepped round snubber thingy's and cut off some of it. The snubber shown above gets cut until about 3 steps are left? The ES one I've used only have 4 steps I think and you leave 2. Which reminds me. I may have a few of these brackets (local made) laying around that I had made a while ago.... Let me know if you need one.