I've been tinkering the past few days. Today I drove around again, and recorded a little bit of driving as a data log. This shows being in second gear and opening the throttle about half way. It made a little boost, but also was going sideways a bit, it does seem to have a traction problem! for reference, baro pressure is about 85 kPa, so 104 is about 20 kPa or 3 Psi boost. More mundane things, I've been working on setting up a different dash display on the little screen, and setting warning and caution limits on several parameters. Lots of stuff it can do, lots to learn to make it do what I want. And I got the rear hatch lock to work, that took an hour or two! but didn't cost anything. Now I can close and lock it. Although everything in back is exposed to view. I have my tool box in a plastic bin to hide it. I might make a little storage area where the back seat was, to cover up some stuff.
Hey @squirrel Hey Jim, purely in keeping with the mode of being "CHEEP/CHEAP" in regard to keeping prying eyes out of the rear section where stuff is stored, consider this. It's easy to get 4' X 8' sections of thicker grade cardboard from a variety of places. The best places are the places that sell 4'X8' sections of plexiglass, they always have those size sections of thicker grade cardboard, which are used to keep sheets of Plexiglass separated from one another, and they always ( MOSTLY ) throw it away after the customer purchases a sheet of plexiglass. That has been my experience. Make the templates of the sizes of the windows, traced out onto the cardboard. Simple sections of the elements of Velcro which can be fitted to the cardboard window covers and the matching contact points in the interior of the cabin. When not in use, the card board window covers will lay flat for easy storage. When parked at places over night, the cardboard window covers, especially when painted black or just left plain as stock cardboard, will at least help to keep prying eyes from looking into the locked spaces. Just a thought to consider. I was never a fan of tinted windows. Thanks from Dennis.
Between Target AFR and actual, there is a bit more work. Gotta be safe! The fuel pressure changed a bit, is it boost referenced? It didn't move much. If that's adjustable, it will help keep the AFR curve aligned with boost. You can spot the wheel spin on the RPM trace. Either you are super on feeling that and lifting, or it wiggled the car and you when it happened. BTW, good naming on the file, I do that too. Makes it easy to figure out revisions.
That's a neat idea, but more effort than I want. I think I'll be OK just being able to hide a few things. I've never had any problems on my many trips in old cars, but I do try to be careful about not leaving valuable stuff exposed, and also trying to find a half decent neighborhood to stay. heh...that's the default file name by the system! Kind of like the file names on photos on Android phones. But the tune file, I save as something like jim tune 20250523c.terx so I can keep track of it. Like you would. Yeah, watching traction on the data log is fun. I also ordered a speedometer signal adapter, so maybe I'll be able to get wheel speed to show up there also. I'd have to wire the input, but it has a parameter name already for it.
It would be useful! The FP and boost might be a lot different in numbers on the graph, I'm just spitballing. You are already a lot deeper in this stuff than me! Just the peanut galley asking dumb questions! As for the cardboard, cut to fit like a tonneau, but cover the top in trash/debris. It will look like the back half is just junk! EDIT: others have thought so too. https://packaged-media.redd.it/a56q...00&s=17abf7158a71fa7371646a98aa1f4ee6dcd4d334
I'll bet! curios to see what you work up to deal with this. Light foot, traction control, big sticky's?? Jim, though I'm not a fan of it, would (limo) tint, or a wood-grain wrap be an option for the rear glass? (a Woody Jeep!) Diggin' this build...
On speed, did the 2WD axle come with wheel speed sensors? That would help log wheelies and traction (F:R). Stuff for future Jim, but something to consider.
I like being able to see out, so I'm not going to tint or cover the windows. I just need a little room to put stuff that doesn't want to be seen. For traction, I guess I need to alter the wheelbase, after all. I'd been thinking about what it would take, but it's a lot of work. the fuel pressure regulator is the stock truck unit, so it's referenced to manifold vacuum/boost. It seems to follow pretty well. I have a warning display set up on the little computer dash now, so it will turn yellow if it drops below 50, and red below 45. The only thing I really care about is that the fuel pump is keeping up with demand, when it really needs to. Which is exactly when you can't be watching gauges.
yeah, makes mine look normal! I saw it in real life, too. I think that's me by the trash can, in the yellow shirt.
In today's world, of how stuff gets messed with, I would be a bit more concerned with having all of that wonderful, cool engineering and parts fully exposed out in the open! All it takes is one hoodlum, to fuck with the flapper cap and introduce into it, something that wants to destroy the turbo! ( sand, marbles, nails, rocks, ) It might be prudent to weld a couple of tangs with holes for a simple padlock to secure the Flapper cap at night time, that is "CHEEP" peace of mind when "CHEEP" isn't in eyesight at night time! Because there isn't any hood or special custom ( made by squirrel ) ugly, thoroughly removable hood to cover it up! But I totally get the idea of all of that engine compartment left totally open, its part of the very cool absurdity of this amazing build!
Built a roll bar today. The roof rack came in handy yesterday to take the main hoop tube to the bender.
thinking of hauling 180 miles up to the friday night drags at Firebird (phoenix). Gates open at 5:30. It's quarter to two right now, haven't packed anything yet.
Yeah. First ruin didn't go very well, shut off about when I hit 2nd. I think I figured out what happened, changed a setting, will try again.
Outstanding R/T! And not at all shabby considering all the bugs you have to shake out of it/ fine tune, etc.
http://wallaceracing.com/etcalc.php Plugging in 116 MPH =11.42 Plugging in 1.84 sixty foot = 13.20 @100 Plugging in 7.37 eighth = 11.68 @ 113 I'd say it's got potential! EDIT, my mistake I had the bold figure wrong.
I need to figure out how the "two step" rev limiter works, and get it to spool up while staged, so it will launch with boost, that will make a big difference in 60 foot time, and knock several tenths off the ET. But that also means it has to hook up on the starting line, and that might need more tire than it has now. Also stall speed and other things come into play. Basically, it's launching "lazy" right now. Lots to learn and test yet, but it's on the way.
The Jalopy Journal
