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Re: Noob build

Posted: 13 Mar 2017 15:19
by Tank510
Who did the second diagram that's wrong? I've never seen that before.[/quote]

Page 17 of your how-to thread. I missed it when I initially compared the two. ... ng/page-17

Re: Noob build

Posted: 13 Mar 2017 15:23
by Tank510
icehouse wrote:
Tank510 wrote:So after a week of painful head scratching it FINALLY RUNS! Only for five seconds, then it dies, but that'll be dealt with later. A couple of problems I had:

1. Engine came without Ignition module - didn't realize it and when I sourced one I had spark.
2. Wiring diagram I used had the ECU BUP and ECU LSS ports backwards.
3. Forgot to terminate the starter wire to the ECU

Everything else went well. I bought a fuel pressure gauge to put in permanently and depending on what is causing it to die after 5 seconds I'll just get to spend more money. I'm thinking bad idle air control or fuel pressure. ...

Below are the two reference diagrams for the KA24 CanAm Box, you can see the mixup.


CANAM box wiring diagram.jpg

Incorrect (ECU BUP and ECU LSS are switched):

KA simplified.jpg

Next up is to fix the idle, then do an exhaust which will be a huge job, finish the last brake line, bolt up drive and half shafts until I can finally get onto permanent wiring and interior work :)

Who did the second diagram that's wrong? I've never seen that before.

See above

Re: Noob build

Posted: 04 Apr 2017 15:14
by Tank510
As luck would have it the new ECU didn't show up till the day I left on vacation. It was probably better that way since the engine still only runs for 5 sec unless the MAF is disconnected or I rev the piss out of it. Made the decision to keep going, just rewire the mess at the front of the motor and then see if it does it once I've done that.

Also, was doing some research on the headers. It's clear that the 4-2-1 is much better for midrange so I'll bite the bullet and spend some time cutting it again and tucking it closer to the body.

On the bright side I found an alternative to replacing the stock heater valve. Not only was my valve push rod broken but the chord was also done. So, the best alternative was to find a 5/8" electric solenoid valve and put it in its place. I'll mount a switch behind the heater controls such that when Heat is selected the switch is pushed in. Similar to a door switch. Cost of the solenoid was $12. Cost of a 620 Valve was $120, new chord unavailable. All it took was two small welds to make it mount in the correct spot, one has to be careful not to make it too hot or the plastic on the solenoid starts to melt.

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Next up was the battery mount. This will go in the trunk next to the sub box. I didn't want to spend the $300 on an optima battery plus the mount, so I bought this one instead for $190 and a $50 uncoated mount. The top was just too tight and didn't have the right step, a bit of work and now it's good. Will powder coat it eventually. To put it in the trunk I'm going to get some square tube, weld square washers to it and weld the tube to the trunk floor in order to elevate the tray. Otherwise it would sit all cockeyed in the back...

Unfortunately I am gone from the shop for two weeks so that'll be it for now.

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Re: Noob build

Posted: 24 Apr 2017 13:16
by Tank510
Well this weekend was good, the car now runs for more than 5 seconds after I got a different MAF. I used the MAF out of my neighbors old Auto 240SX, car runs and doesn't bog out after 5 sec. I plug my old MAF into his car, it runs fine. Now mine won't idle properly so it appears I might have a vacuum leak somewhere or something else is wrong.

Also, I got a nice oil leak at the crank seal that comes on only when the motor is warm. That will be a fun one to address.

Otherwise it was counterproductive, my friends bachelor party cut out most of the weekend. I did finish up the actuator for the heater valve solenoid, now I just need to run power to the switch and the solenoid will open when I push the lever to the far right. It's not as good as the stock valve since there is no incremental increase in flow, it's either on or off, but with parts being unavailable it's the best I could muster.

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Re: Noob build

Posted: 01 May 2017 11:28
by Tank510
Well, it was time to do the exhaust. So I ended up deciding to ditch the cheap eBay pipe and bought a magnaflow 5" straight through muffler and a 3.5" tip. This should sound nice with the resonator that I kept from the original kit. I did the rear section first, tried to get as close to the U-joint next to the diff as possible without hitting it. There's about a 1/4" clearance there. I didn't factor in the rear tire at first so that mistake cost me a few hours, but it's all welded up and in now. Now I'm modifying the header since it hangs too low, then it'll finally run with full exhaust.

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Re: Noob build

Posted: 16 Jul 2017 12:47
by Tank510
Well it's been a while, life got in the way. New job, still gotta move and bought a 240 project. But the 510 will be done first, no flipping back and forth. Assembled her a bit for transport, got it running decently well but sounds like a vacuum leak and bad timing so it sputters. Good enough to load on a trailer though...

Bled brakes & clutch, one brake line in the back failed, otherwise all good. Once I get settled into the new shop I'll dig into it some more, do some wiring etc.

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Re: Noob build

Posted: 16 Jul 2017 16:26
by two_68_510s
Must be cool to even drive it up and down the ally, good going.