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> BUILD-OFF CHALLENGE: Tygaboy's '75 LS3, It seemed a good idea at the time...
Andyrew
post Apr 2 2022, 11:36 AM
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Love the convenience changes!! Finishing touches are just lovely!
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roundtwo
post Apr 2 2022, 12:57 PM
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Holy smokes- I go away for a week and you’ve gone full bumper and rear trunk lid plus a couple dozen other custom fabs. It’s even looking 914ish again. Well done.
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tygaboy
post Apr 2 2022, 05:47 PM
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A buddy calls and says, "Your car is in Grassroots Motorsports". I say, "Right, I'm posting the build there..."
"No" he says, "I mean in the magazine."
Must have been a slow news month but I'll take it! RacerBenz and I got a call out in this month's issue...
I'm getting the feeling I know where the work "PRESSure" comes from! (IMG:style_emoticons/default/av-943.gif)


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tygaboy
post Apr 2 2022, 06:04 PM
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Back to 914-related stuff: Today, Robert @buddyv , Mike @Mikey63 and Mark @markhoward headed over to the monthly gathering at EASY in Emeryville. Almost unbelievably, Robert said he wanted to ride with me. Heck, I didn't even sleep well, thinking about the drive, I mean, we had to cross a 5.5 mile long bridge! TWICE! This was the litmus test drive for me: farthest distance, starting in the dark, weekend traffic.
(IMG:style_emoticons/default/wacko.gif)
I'm SOOOO pleased to report that the car performed flawlessly! Outside air temp was in the mid 40s when we left. The seat heaters again proved themselves and I actually ended up turning mine from Hi to Low. Not to say that my wife would have loved it but considering I have no carpet, a totally naked targa roof, no targa-to-window seals and only an 18 ga sheet metal panel between the engine and interior, it really wasn't bad.
Robert and I chatted the whole way and, well, it works!
The car attracted a fair bit of attention with the expected range of reactions:
Walk right by with barely a glance to wanting a full rundown of all the mods. Mostly it was "I bet this thing goes pretty good." You, Sir, are correct! (IMG:style_emoticons/default/shades.gif)

In summary, it was the best of days. Hanging with my good buddies doing car stuff and home in time for lunch with my wife. I'm one lucky guy.
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Cairo94507
post Apr 3 2022, 07:01 AM
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@tygaboy - Kudos to you Chris. What an excellent day in your 914 with the drive to EASY and with Robert riding shotgun. Also, getting published with the Benz is so very cool- you deserve all of the praise and it really speaks well of your fabrication skills. I can tell WCR is going to be a great drive and trip. (IMG:style_emoticons/default/beerchug.gif)
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Andyrew
post Apr 3 2022, 07:16 PM
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Awesome!! Magazine coverage AND a great drive!!!
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tygaboy
post Apr 4 2022, 12:20 PM
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So I have about 1000 miles on this thing and am getting a feel for usability.
One thing that really stands out is that it needs taller gears. While the stock Boxster gearing is great for spirited back road driving, at 70 mph it's spinning about 3000 RPM. Way too busy when I'm on the freeway. So... (and I'm sure this will be a big surprise) I'm going all in on my transmission mods: I ordered an Albins 3.0 ring & pinion.
This will be installed at the same time the LSD goes in and should make a world of difference in both comfort and fuel economy. Yes, I do care about that, too.
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tygaboy
post Apr 4 2022, 05:07 PM
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Today's Out & About was a lunch date with my lovely wife! She said the seats were really comfy so I'm taking that as a win.
As we were backing out of this parking spot, she looked UNDER the truck to check for traffic.
I'll overstate the obvious and say:

"You really want to be careful when you're driving these little cars!"


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tygaboy
post Apr 6 2022, 01:34 PM
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The Albins ring & pinion arrived one day after being ordered and is now being shipped out for cryo and REM Superfinish treatment. OOOOOOH! Shiny.... Obviously not a ring & pinion but this is the result of the work. (IMG:style_emoticons/default/wub.gif)
There are proven benefits to this and if you really want to geek out, here's a link to the place that's doing the work. There are a bunch of papers on all sorts of interesting stuff related to these processes.
My primary reasons for doing it are that it all but eliminates the run-in period and associated risks and is proven to measurably reduce parasitic losses in the trans, improving both RWP and coast down numbers.

Worth it? Overkill? Stupid? I'll let you know! (IMG:style_emoticons/default/laugh.gif)

https://www.cryogenicsuperfinish.com/processes/

The trans is then headed to CMS in AZ where this ring & pinion and an LSD will be installed. The trans will also receive a general going over and whatever needs refreshing will get it.


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Dion
post Apr 6 2022, 06:59 PM
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Congrats on the magazine article! (IMG:style_emoticons/default/beerchug.gif)

That cryo process is certainly state of the art. Amazing tech.
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bkrantz
post Apr 6 2022, 08:03 PM
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Wow, talk about machine parts porn! (IMG:style_emoticons/default/w00t.gif)
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AZBanks
post Apr 6 2022, 08:43 PM
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The cryo place is in my general neighborhood. Time for a field trip.
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roundtwo
post Apr 6 2022, 10:15 PM
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To absolute zero and beyond!!!!!
Why doesn't this surprise me Chris? Always something beyond cool going on into your builds.
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mgp4591
post Apr 7 2022, 02:06 AM
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QUOTE(tygaboy @ Apr 6 2022, 01:34 PM) *

The Albins ring & pinion arrived one day after being ordered and is now being shipped out for cryo and REM Superfinish treatment. OOOOOOH! Shiny.... Obviously not a ring & pinion but this is the result of the work. (IMG:style_emoticons/default/wub.gif)
There are proven benefits to this and if you really want to geek out, here's a link to the place that's doing the work. There are a bunch of papers on all sorts of interesting stuff related to these processes.
My primary reasons for doing it are that it all but eliminates the run-in period and associated risks and is proven to measurably reduce parasitic losses in the trans, improving both RWP and coast down numbers.

Worth it? Overkill? Stupid? I'll let you know! (IMG:style_emoticons/default/laugh.gif)

https://www.cryogenicsuperfinish.com/processes/

The trans is then headed to CMS in AZ where this ring & pinion and an LSD will be installed. The trans will also receive a general going over and whatever needs refreshing will get it.

That's the sexiest crank I've ever seen...spin that sucka to the moon!
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tygaboy
post Apr 8 2022, 04:51 PM
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OK, this may qualify as the "absolute least action" picture. Why? Because that there is my new ring & pinon in the cryo chamber!
See what I did there? Really, cold, like downwards of -300, so not a lot of moving = not much action... OK, sorry.
Anyway, here are some general geek-out benefits to the cryo process:
-Increased abrasion and wear resistance
-Increased fatigue life
-Increased ductility
-Reduced residual stresses
-Mild increase in tensile strength
-A change in vibration characteristics

Specifically for gears:
-50% extra pitting resistance
-5% more load carrying capacity
-40 to 60 degrees higher tempering temperature
-treated gears operate cooler in friction action
-3-4 times increased life of racing gears, including drag racing applications


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AZBanks
post Apr 9 2022, 02:09 AM
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QUOTE(tygaboy @ Apr 8 2022, 03:51 PM) *

OK, this may qualify as the "absolute least action" picture. Why? Because that there is my new ring & pinon in the cryo chamber!
See what I did there? Really, cold, like downwards of -300, so not a lot of moving = not much action... OK, sorry.
Anyway, here are some general geek-out benefits to the cryo process:
-Increased abrasion and wear resistance
-Increased fatigue life
-Increased ductility
-Reduced residual stresses
-Mild increase in tensile strength
-A change in vibration characteristics

Specifically for gears:
-50% extra pitting resistance
-5% more load carrying capacity
-40 to 60 degrees higher tempering temperature
-treated gears operate cooler in friction action
-3-4 times increased life of racing gears, including drag racing applications



That is so cool!
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Cairo94507
post Apr 9 2022, 06:10 AM
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Learn something new every day; that is certainly a very cool finish. (IMG:style_emoticons/default/beerchug.gif)
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tygaboy
post Apr 11 2022, 03:53 PM
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Step 1: Modify stuff
Step 2: Drive a couple hundred miles
Step 3: Take it apart to do something else
Step 4: Repeat!
(IMG:style_emoticons/default/happy11.gif)

Here we go again. Trans is out and on it's way to get the new ring & pinion and LSD installed. I'll pull the engine tomorrow and go to work on finalizing everything in the engine compartment area. I have a little bit more metal work and wiring to do.
Once that's done, I'm going to spray heat/sound control on the back of the fire wall then paint this area.
The goal is that everything under the trunk and engine lid will be done for WCR.
Wish me luck!


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Superhawk996
post Apr 11 2022, 04:07 PM
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QUOTE(tygaboy @ Apr 4 2022, 02:20 PM) *

70 mph it's spinning about 3000 RPM. Way too busy when I'm on the freeway.


(IMG:style_emoticons/default/av-943.gif) Good thing you never had a 1st Gen Miata.

Was more like 3000 RPM at 60 mph on the freeway in top gear.

As always I can't keep up with your posts -- great work on the magazine coverage and getting some real world seat time with the 914!
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Cairo94507
post Apr 12 2022, 09:24 AM
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@tygaboy - Have you selected a color? (IMG:style_emoticons/default/beerchug.gif)
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