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Post by certimafied on Sept 17, 2015 11:23:58 GMT -5
Crackheads always have the best deals . Isn't it funny how the smell of gear oil takes over your whole work area?
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Post by indkid87 on Sept 17, 2015 19:33:07 GMT -5
Yeah, unfortunately the razor blades and short straws weren't fun to clean out of the car. 90w is not a fun smell, it's worse when you pull the motor since it constantly leaks out the driveshaft hole and gets everywhere. It appears that the pinion is inseparable from the shaft. I even borescoped down the oil passage to see if there was a seam somewhere. Also, there was a ton of gunk in the oil passage. It will definitely need to be cleaned out on the replacement shaft and is important to watch out for if anyone else gets in this deep. There is a washer in the top side of the pinion that appears to be pressed on. It must be heated and than slipped over the shaft.
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Post by Armageddous on Sept 17, 2015 23:03:22 GMT -5
Surely you could use the entire shaft and just match the gears?
Terry
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Post by indkid87 on Sept 18, 2015 9:23:24 GMT -5
Yep, I think Matt was hoping to just swap the pinions
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Post by Armageddous on Sept 18, 2015 10:59:41 GMT -5
Dang matt and his lazyness.
Terry
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Post by madmatt on Sept 18, 2015 17:03:14 GMT -5
Dang matt and his lazyness. Terry I know, I know... Actually there was 2 evil plans... one lazy one, swap pinions on a known good gear set, verses swapping and shimming gears... but the other was MUWAAA HAA HAAA.... However, I think it's silly. knocking yet another tooth outa that pinion and finding a bigger ring gear. I would love to run 14" wheels, as it would free up a huge assortment of used (and new if I ever had the cash) rally rubber. Golfs typically run 14's and there's lots of those. "back in the day" there was Swifts and Justys and even some Sentra's I think on 13's. As such getting 13" rally rubber was no problem. Now, not so many options in North America, and I ain't shipping tires from You'rrre-up. So that option would mean splining the shaft... finding a ring gear or making one, making a pinion to fit splines. Not a likely scenario. And, now seeing that pinion, it's pretty tiny, There's already chunks outa Dave's, I'm not sure it could go smalla and hold up to the massive powa Either I'll live with the drop in final drive if I go to 14's or forget about it and continue on 13's, errrr whatever. I just wanted pics
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Post by indkid87 on Sept 18, 2015 17:46:40 GMT -5
The missing chunks are due to the aforementioned Crack head knocking a hole in the case and running it without oil for who knows how long...
I'm with you on wanting to run rally tires and 14's. I'm thinking some body mods will need to be done as well to accomplish that.
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Post by gearheadeh on Sept 18, 2015 21:08:23 GMT -5
Matt, Why are you worrying about the rim size? it is the actual diameter of the tire that has to clear the closest point ... ... ..which is the front lower most part of the rear wheel well opening. Im rocking a 15 inch rim-- this is the rim and tire mounted on a Vivio, it is dark but I will post a pic of the same rim and tire mounted on my first gen tomorrow.
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Post by madmatt on Sept 19, 2015 2:47:18 GMT -5
It's not the rim I'm worried about... It's the available tires, their size, and their effect on gearing. I can smash the body out, that doesn't worry me, in fact when I rebuilt the rear wheel wheels I did open them up about an inch already. My issue is this gearing thing. The lower the gearing, the more torque, the faster I can get going again in any one gear, and the lower the drop in RPM between shifts. And while it now makes more power, it's still no torque monster, so keeping the revs up helps. If you go to the last decent stage before we blew at Pines last year, (where I'm still timid about the reving motor, that was no use, it blew anyway...) the fist 3 4 mins is no problem, 2-3 gear stuff. But at about 3:50 we move to a fast flowing part of the stage, Even though it revs to 6000... I don't like to spend a lot of time up there, so let's say I shift at 5000 in 3rd, I'm falling to nearly 3000 in 4th with my current first gen transmission, the step up to the 2nd gen will make it nearly 3400, and then the ultimate 2wd 4th gear would make it a usable 3500 or something. www.youtube.com/watch?v=pS81j9avq-INow... if this new oil pump saves motors... it won't be such an issue, as I won't mind reving higher, and everything gets better the faster you spin the motor. The standard 14" golf tire is a 175/65/14 or 185/65/14, with the 185's probably more common (available used), vs my tiny 165/65/13's which are already big and heavy. At the nice 6000 rpm 3-4 shift, here's the speed diff. 69.71 mph on 185/65/14 68.19 mph on 175/65/14 63.7 mph on 165/65/13 Anyway, it's all fun to think about Edit... if you go all the way to 9:05 in that, you can hear when the bearing starts knocking... just as we cross the "Iron Bridge" Edit # 2... did the math below
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Post by madmatt on Sept 19, 2015 4:01:56 GMT -5
Ultimate Rally transmission for the Justy This is for 165/65/13's... 5.2 final, fist gen 4wd box, Gear mph@5500 match mph@6500 match 1 21.97 3000 25 3500 2 39.81 3700 47 4400 3 59.35 3700 70 4400 4 87.52 4000 103 5400 5 106.94 126 5.285 final, send gen 4wd box 1 21.62 3000 25 3600 2 39.17 3700 46 4400 3 58.39 3900 69 4600 4 83.62 4700 98 5500 5 98.36 116 5.285 final, send gen 4wd box, 2wd gear set 1 21.62 3000 25 3600 2 39.17 3700 46 4400 3 58.39 4000 69 4700 4 80.67 4500 95 5400 5 98.36 116
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Post by madmatt on Sept 19, 2015 4:06:07 GMT -5
So really my problem is the 1st Gen 4wd box! But we can see the difference the 2wd 4th gear would make for the 3-4 shift. It makes the drop to 5th worse, as it remains the same ratio in the 2wd box. kcswimrac, you build it and let me know how it goes But you're running a turbo now right? That will probably do more then the gear box change If I have the time, I'll do that table above for larger tires... but that was too much math for me and I used an online gearing calculator!
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Tuolumne Kid
Never underestimate the power of the N00B
Posts: 45
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Post by Tuolumne Kid on Sept 23, 2015 15:54:02 GMT -5
Man your Rally Justy is very cool. I am new here, and not a mechanic at all. I wish I could do what you guys do I will definitely ask you guys questions.
Thanks for the photos
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Post by indkid87 on Oct 2, 2015 15:45:21 GMT -5
Welcome to the justy world. My mechanical knowledge was limited when I first got my car too. Justy's are pretty good cars to cut your teeth on since they are so simple. So, I may have another rallyx car lined up. I want to keep it a little quiet until I get it mobile, but here's a little teaser.
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Post by madmatt on Oct 2, 2015 17:10:57 GMT -5
Bass-tarrrr-d!!!!
oh tell it makes magnificent woot woot turbo noises!!!
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Post by indkid87 on Oct 2, 2015 17:30:25 GMT -5
Nope, wrong era of rally history. It might make 3 cylinder, 2 stroke noises though.
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Post by bizarro on Oct 3, 2015 3:35:20 GMT -5
My brain just popped....
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Post by madmatt on Oct 3, 2015 9:57:09 GMT -5
Wait... The only "rally-esque" 3 cylinder 2 stoke I know of is, well of course. But that's an Audi badge.... If you have 96 2 stoke... I'm personally gonna come over and make you feel like this. and steal it.
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Post by indkid87 on Oct 3, 2015 10:28:16 GMT -5
Correct era, wrong car.
It wasn't an Audi badge yet.
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Post by madmatt on Oct 3, 2015 10:37:04 GMT -5
A DKW? ?
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Post by indkid87 on Oct 3, 2015 11:08:54 GMT -5
Bingo!
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