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> Rebuiding Inside-out
bkrantz
post Jul 13 2022, 08:00 PM
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That looks better.


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bkrantz
post Jul 13 2022, 08:05 PM
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Every 914 needs a toolkit onboard, right? I have long been a fan of voodoo, at least the kind that seems to prevent any incidents I am prepared for. I grabbed some old tools and some new ones, and a tool bag that was sitting on a shelf. This includes wrenches, pliers, screw drivers, sockets (including a 19mm deep socket and breaker bar for lug bolts), and a few other things.


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bkrantz
post Jul 13 2022, 08:07 PM
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Good spot for the tool bag on the right side of the spare tire. I also stocked the usual clutch and throttle cables, plus another small bag with electrical spares.


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bkrantz
post Jul 16 2022, 08:31 PM
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Some bling: new window cranks. The originals were a bit chewed up. I know the early cranks are not correct, but they are more shiny.


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bkrantz
post Jul 16 2022, 08:32 PM
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I like it.


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bkrantz
post Jul 16 2022, 08:33 PM
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Left side too. The bit of shiny metal matches the rest of the interior.


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Puebloswatcop
post Jul 17 2022, 05:11 AM
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Shiny is good. I think I like them better than the black ones anyway.
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FlacaProductions
post Jul 17 2022, 08:47 AM
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I recently put the same cranks on for the same reasons....
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bkrantz
post Jul 17 2022, 06:35 PM
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No 914 work today, but I can't resist noting over 200,000 views. (IMG:style_emoticons/default/cheer.gif)
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bkrantz
post Jul 18 2022, 08:45 PM
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Getting ready to haul the 914 to the big city, and do some dyno tuning. First, I drove to the corner gas station, and put several gallons in the tank. Good news: the gas gauge seems to work. Bad news: the speedo and odo do not.

Then I picked up a rental trailer, and got the 914 loaded and tied down.


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bkrantz
post Jul 18 2022, 08:46 PM
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Then for fun, and to get the rig off the street, I practiced my backing up skills.


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Puebloswatcop
post Jul 19 2022, 01:18 PM
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The good thing is the Speedometer and Odmeter are not electrical, so it narrows the problem down to mechanical issues, question is which end of the cable or is it the cable itself.

Can't wait to see how the Dyno tests go
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930cabman
post Jul 19 2022, 01:29 PM
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The speedo in my 1975 works when I can get her over 40 mph, must be something sticking somewhere. I simply give the dial a tap to get it going when my speed is under 30.

I think of it as my '70's version of a touch screen.
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NARP74
post Jul 19 2022, 01:43 PM
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Looks great. Which big city?
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bkrantz
post Jul 19 2022, 08:28 PM
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QUOTE(NARP74 @ Jul 19 2022, 01:43 PM) *

Looks great. Which big city?


Longmont, which I guess is not too big. But I consider it part of greater Denver.
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bkrantz
post Jul 20 2022, 08:41 PM
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At 5250 Perfomance in Longmont, CO. Nice shop with lots of EFI tuning experience.


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bkrantz
post Jul 20 2022, 08:42 PM
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Here's their Mustang dyno.


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bkrantz
post Jul 20 2022, 08:44 PM
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And the 914 strapped down. Mike was not too worried about controlling all the awesome 2 liter horsepower.


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bkrantz
post Jul 20 2022, 08:45 PM
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The core of the dyno: electromagnetic brakes, with computer control.


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bkrantz
post Jul 20 2022, 08:57 PM
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A quick review of the day. Once home and after reviewing all the files, I will post more.

The initial checks went well, and the car started and ran (no surprise to me, but Mike said he is often skeptical of people who show up with cars that will not start).

Then we had a problem with the throttle sensor (TPS) reading. At first we thought the sensor was bad, then the leads were reversed, and then a software problem. Finally we figured out that the bad reading "might" be due to cross-talk with the crank position sensor. We rewired that, and got a reasonable TPS reading.

Mike then went through his complete tuning process, starting with the fuel table, then the spark (advance) table, and then tip-in enrichment and a few other drivability tweaks.

I was not after "max" horsepower, and my goal with the engine mods (bump to 2056 cc, compression about 8.8:1, new EFI and ignition) was 120 hp. At the end of the day we saw consistent peak hp of 113 at the wheels (corrected for the altitude. Assuming a 10% loss through the transaxle, half-shafts, and hubs, that means 125 hp at the crank. Yay!

Note that the curve data below 2500 is not "real", based on the settings for this pull.

I did not have time to drive the car (I was late to help my uber-gardener wife pick up plants at two area nurseries, so that will have to wait until we get home.


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