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> BUILD-OFF CHALLENGE: Tygaboy's '75 LS3, It seemed a good idea at the time...
tygaboy
post Oct 17 2016, 10:56 AM
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Hi World!
Let the games begin! (IMG:style_emoticons/default/piratenanner.gif)
As the title says, it's a '75 that's getting an LS3 (Cracker's "old" motor - thanks Tony!) and Boxster 6 speed.
Also planned is zippidy doo-dah 911 front suspension with Boxster calipers all around. The rear suspension is getting 911 ebrakes, Tangerine Racing raised pickups and shock towers.
I have plans to stiffen the chassis with a partial cage.

Doesn't that sound like a great plan? I think so, too!

BACKGROUND:
I got this as a roller that was purported to be "dry and accident free". And it was!
Except for all the rust and the place where it was hit. Yeah, yeah... But it's all good. The seller and I worked everything out. (IMG:style_emoticons/default/beerchug.gif)

But our little 914s are full of surprises and isn't that half the fun? So, first up is rust repair time! (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/welder.gif) (IMG:style_emoticons/default/welder.gif)

Let's begin with some pics of what I started with. Wish me luck! Wait, forget the luck, wish me SKILL!!!


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mgp4591
post Mar 4 2022, 11:09 PM
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Amazing as usual...and I actually am rewiring my car. But I'm jealous...jealous YOU'RE not rewiring my car! (IMG:style_emoticons/default/lol-2.gif)
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tygaboy
post Mar 5 2022, 02:17 PM
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This is the first of the sensor branches to be completed and I couldn't resist a quick test fit to see how it's going to look. One thing to be more aware of next time is to do better at hiding the DR 25 labelling on the underside of the run. I tried but, just like Agent 86, I "missed it by THAT much!" Ah, well.
I'm a bit on the fence about the labeling. It's certainly looks the business and shouts "MotorSport", but it's not like I don't know what plugs in where! (IMG:style_emoticons/default/laugh.gif)

Anyway, with a bit of focused effort, I should be ready to try and fire it in a few days. It'll be good to get this thing back on the road! (IMG:style_emoticons/default/driving.gif)


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djway
post Mar 5 2022, 10:35 PM
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I don't know about your brand but the stuff I used could be wiped off, but I don't recall which chemical was required at the moment.
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mgp4591
post Mar 6 2022, 01:50 AM
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QUOTE(tygaboy @ Mar 5 2022, 01:17 PM) *

This is the first of the sensor branches to be completed and I couldn't resist a quick test fit to see how it's going to look. One thing to be more aware of next time is to do better at hiding the DR 25 labelling on the underside of the run. I tried but, just like Agent 86, I "missed it by THAT much!" Ah, well.
I'm a bit on the fence about the labeling. It's certainly looks the business and shouts "MotorSport", but it's not like I don't know what plugs in where! (IMG:style_emoticons/default/laugh.gif)

Anyway, with a bit of focused effort, I should be ready to try and fire it in a few days. It'll be good to get this thing back on the road! (IMG:style_emoticons/default/driving.gif)

As 99 would say, Don't worry Max...you'll get it next time!
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Shivers
post Mar 6 2022, 04:01 AM
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Too cool for school
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Dion
post Mar 6 2022, 07:49 AM
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Looks good to me. Seeing manufacturing labels or branding is fine. I don’t know, seems more purpose built is my interpretation. Hope to see it fired up soon.
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jd74914
post Mar 6 2022, 08:44 AM
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QUOTE(djway @ Mar 5 2022, 11:35 PM) *

I don't know about your brand but the stuff I used could be wiped off, but I don't recall which chemical was required at the moment.

I’ve never tried with dr25, but >90% alcohol usually removes printed labeling on rubber. I have done it with bnc coax jacketing which is a similar robustness.
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tygaboy
post Mar 6 2022, 08:47 AM
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@djway @jd74914 - The printed labels have clear heat shrink over them to prevent any damage.
I didn't think about trying to remove the DR 25 product labeling...
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tygaboy
post Mar 6 2022, 01:55 PM
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Detailed shot: labeled, clear heat shrink, sealed with SCL. Essentially my best work so far and it'll be completely hidden once installed. What else is new? (IMG:style_emoticons/default/laugh.gif)


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tygaboy
post Mar 7 2022, 06:25 PM
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And... that's a wrap! (IMG:style_emoticons/default/laugh.gif)
Well, OK, I still have to do the boot at the connector but I'm going to wait on that until after the car runs - just in case I need to get in there to correct anything. Hey, it was my first attempt at this level of wiring so no, I'm not 100% confident I won't have any problems. Yes, I tested everything. Still...

I realized I've made quite a few changes since I last drove it. Fingers crossed everything comes together and it's a non-event come start time!

- new fuel tank
- updated filler cap
- new fuel filter/pressure regulator
- updated fuel lines to support above
- swapped in the LS3 DBW intake manifold/throttle body
- new ECU
- new engine harness
- replaced the fuse/relay panel with PMU
- updated chassis electrical harness
- custom transmission mount/support structure
- updated exhaust design
- new air box (still TBD)



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Krieger
post Mar 7 2022, 11:26 PM
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Dude, that is impressive work! (IMG:style_emoticons/default/first.gif)
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Andyrew
post Mar 8 2022, 12:08 AM
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Love it!!! Are you planning on having it ready to drive to WCR?
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tygaboy
post Mar 8 2022, 09:21 AM
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QUOTE(Andyrew @ Mar 7 2022, 10:08 PM) *

Love it!!! Are you planning on having it ready to drive to WCR?


@Andyrew - Let's see... It's early March. WCR is late July. And all I have to do is get it running and not do something like start more silly updates? (IMG:style_emoticons/default/idea.gif)

Probably not. (IMG:style_emoticons/default/av-943.gif)

Seriously though. Yes, I want to attend a WCR and actually have my 914 running/driving. So the goal is make it run well, keep after the suspension tuning/development and make progress on the interior. I won't be painted by then but should otherwise be in fighting shape.
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tygaboy
post Mar 8 2022, 09:46 AM
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QUOTE(Krieger @ Mar 7 2022, 09:26 PM) *

Dude, that is impressive work! (IMG:style_emoticons/default/first.gif)

@Krieger - Thanks Andy. Let's just hope it works! (IMG:style_emoticons/default/huh.gif)
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Cairo94507
post Mar 8 2022, 09:50 AM
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Confidence is high; I have seen your work in person. I have no doubt your car will be in the procession headed north. (IMG:style_emoticons/default/beerchug.gif)
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tygaboy
post Mar 8 2022, 05:50 PM
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What's this? I added an NPT bung to the H2O collector in prep for swapping in a Davies/Craig water pump. It modulates the pumped volume based on temp from their supposedly proprietary sensor. This should address my "over cooling in cool weather" issue.
I still need the GM sensor to get coolant temp to the ECU which then sends it over the CAN bus to the dash.


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tygaboy
post Mar 8 2022, 05:54 PM
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A picture I've taken what seems like a thousand times. I just never get tired of this view!
I really like the way the ceramic coating on the exhaust turned out.
And this version of the engine harness is even more tidy than the last. Note I didn't yet update the injector harness as I really want to get it running again first. Then I'll construct a new one with the labeling, etc.

Anyway, everything is buttoned up and ready for a remote session with the tuner.
We're targeting this Thursday. I made a lot of changes and I'm looking forward to seeing how I did. Wish me luck!


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djway
post Mar 8 2022, 11:52 PM
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Chris914n6
post Mar 9 2022, 02:18 AM
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One little issue I see.

The air temp sender is usually located in the air box which is a controlled environment. Where you have it, it is likely to heat soak at lights and run lean or get wet, cool from evaporation, and run rich.
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Andyrew
post Mar 9 2022, 07:20 AM
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QUOTE(Cairo94507 @ Mar 8 2022, 07:50 AM) *

Confidence is high; I have seen your work in person. I have no doubt your car will be in the procession headed north. (IMG:style_emoticons/default/beerchug.gif)

(IMG:style_emoticons/default/agree.gif)
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