Betty White, the poor neglected race car

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HRH
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Betty White, the poor neglected race car

#1

Post by HRH » Wed May 10, 2017 8:16 pm

So I think I'll start a build thread to get me motivated. I got Betty White running on 4-30-16. And ever since, she's been running pig-rich. Swapped in an L28ET from an '83 280zx, minus all the air bleed stuff. And I've fiddled with the AFM to the ends of the earth and then let it sit for a while. And today I decided to pick it back up, assuming I could get it not-pig rich. Nope. But I did start investigating more on the internet and of course the two pieces of information I found suggested very heavily that connectors or wiring to various components were much more likely. And of course I should know that, but sometimes you get sidetracked.

Think I'll be getting out the multimeter this weekend and see if I can find a few new connectors and start diagnosing things, maybe replace a few items, test some ohms without the breakout box I'm supposed to have that probably no Nissan mechanics have anymore because who would keep such an archaic piece of shit? ;)

But if this saves me from having to spend the money for an aftermarket ECU, then bully for me!


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Re: Betty White, the poor neglected race car

#2

Post by DRIVEN » Thu May 11, 2017 4:59 am

Testing>guessing
When the only tool you have is a hammer every problem starts to look like a hippy.

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Re: Betty White, the poor neglected race car

#3

Post by flatcat19 » Thu May 11, 2017 11:00 am

Guessing is faster.

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Re: Betty White, the poor neglected race car

#4

Post by HRH » Thu May 11, 2017 5:39 pm

^says the tech, lol.

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Re: Betty White, the poor neglected race car

#5

Post by izzo » Thu May 11, 2017 11:03 pm

I like the look of it!
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Re: Betty White, the poor neglected race car

#6

Post by HRH » Sat May 13, 2017 8:58 am

Thanks! So do I! Now if I could only get the damn thing running correctly so I can drive it! Dicked around with it last night, replaced the head temp sensor connector. Still running pig rich. However, I was able to fiddle with the flapper wheel and tweak it to be stoich. It's fully one click on the sweep path too high. Adjusting the clock wheel isn't enough to suck it down. Debating trying to lower the throttle plate, but I suspect it's already as low as it will go assuming no one has ever played with it.

Also need to fiddle with the air bleed I don't have hooked up. Tried to hook it up again last night and it doesn't seem to be getting power. Really need to just do the aftermarket system. My Datsun guru was more receptive to the idea yesterday after he got over his crappy weekend, so that's good. Still, if I can get the original system to work well enough to use it for autocross I'd be quite happy.

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Re: Betty White, the poor neglected race car

#7

Post by HRH » Sat Nov 11, 2017 6:22 pm

Alright, finally procured a different system for the turbo car. Got an older Motec, made for rally racing. Completely sealed fuel controller, which should work just fine since I can use the existing non-matchbox matchbox found on the turbo z. I'll probably end up hooking up a MSD to it so I can have a rev limiter too. I'm sure it will be awhile before I get it going. Want to finish up the wagon first, then the Z car is on the list.

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Re: Betty White, the poor neglected race car

#8

Post by DRIVEN » Sat Nov 11, 2017 9:23 pm

go faster
When the only tool you have is a hammer every problem starts to look like a hippy.

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Re: Betty White, the poor neglected race car

#9

Post by HRH » Sat Nov 11, 2017 9:24 pm

Lol. I need a proper garage. Heated, with more space, and without wife Rose says over my shoulder. ;)

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Re: Betty White, the poor neglected race car

#10

Post by DRIVEN » Sat Nov 11, 2017 9:34 pm

Your garage looked decent to me. Wood stove if I recall. I understand one project at a time though.
When the only tool you have is a hammer every problem starts to look like a hippy.

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Re: Betty White, the poor neglected race car

#11

Post by HRH » Sun Nov 12, 2017 7:11 pm

It's pretty good, but the wagon just barely fits. I have about 2 feet in front of the bumper in which to work. Not enough. It's a lot better than no garage, but I really wish I would have done a summer insulation project in it also. Have to heat the wood stove up all day to get it comfortable when it really gets cold out.

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Re: Betty White, the poor neglected race car

#12

Post by wayno » Sun Nov 12, 2017 7:26 pm

Does your wood stove have a fan?
Do you have a fan blowing on it if it has no fan?
To make more room in front you can take a thick tarp or some other material and make a drape to cover the open garage door, you can then back the vehicle up a little into the drape and still have heat.
“The difference between genius and stupidly is that genius has its limits” Albert Einstein

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Re: Betty White, the poor neglected race car

#13

Post by HRH » Sun Nov 12, 2017 7:38 pm

So my Datsun guru is incorrect. It's not fully-sealed, but it could be if RTV was used. Definitely a durable unit. It's from 1990, the first ECU Motec made. :) But hey, cheap is good, and it should still function perfectly. It's 7 years newer than the L28T, right?! :D

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Re: Betty White, the poor neglected race car

#14

Post by Laecaon » Tue Nov 14, 2017 4:11 am

Motec is a solid brand. Have fun.

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Re: Betty White, the poor neglected race car

#15

Post by HRH » Sat Aug 25, 2018 8:53 pm

Ok, so I'm wiring up the MoTec 1989 period correct version. The problem is the dizzy is CAS on the L28ET. However, I did some digging and while it's serrated tooth for the drive spindle, the regular L28 drive spindle is the same length, etc. So I can use the old style with an old style distributor and a matchbox/GM efi.

The only problem there is I'm going to need to fiddle the advance curve probably, being I don't have a knock sensor with the MoTec. Still shouldn't be a problem as it has air temp sensor, head temp sensor, and map sensor and it's good for turbo. There's no way I see to run the CAS dizzy with the early screwdriver MoTec unit, but I'll do some more digging. I'm betting I'll need to wire the matchbox, then get an ignition controller box of some sort I can adjust while tuning. This is of course, assuming my 1989 aftermarket ECU works as intended. :) Sure hope so!

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Re: Betty White, the poor neglected race car

#16

Post by HRH » Wed Aug 29, 2018 7:35 pm

Image

So this is the turbo oil pickup tube, rear sump and on the passenger side of the block. Rather interesting.

Image

And hey, look at that, there's an oil pickup in the rear that should work! I think anyway. Funny the turbo the front oil pickup isn't drilled. Suppose I'll have to blow some air through there, but it looks like fitting the turbo motor in the Maxima shouldn't be too hard just using Ugly Betty's oil pan and pickup tube.

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Re: Betty White, the poor neglected race car

#17

Post by HRH » Wed Aug 29, 2018 7:39 pm

Found I'll need a new ignition module and a retard device that's boost referenced. Found both from FAST, cheaper than MSD. Still going to be another $400 to get this thing running, but at least I should be able to start tuning after that. Got the wiring harness all set up minus the ignition portion at the moment. Wired in new injector connectors and re-secured a few connections from the previous harness.

And the post image works, sweet!!

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