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Search: Posts Made By: Karl Buchka
Forum: performance & modifications 10-10-2020, 02:13 AM
Replies: 76
Views: 23,292
Posted By Karl Buchka
Other than the nice, notchy shifts (from the Pro...

Other than the nice, notchy shifts (from the Pro 5.0 shifter), I hated the T5 in my 245. It whined in gear and rattled on overrun, even after a complete rebuild. If you don't mind a noisy...
Forum: projects & restorations 08-09-2020, 04:05 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Made some progress on the turbo manifolds. The...

Made some progress on the turbo manifolds. The support material has been removed and the parts have been benched to prepare them for tumbling and shot peening. The areas where support material is...
Forum: projects & restorations 07-13-2020, 03:15 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
I'm not totally sure. It's better than you might...

I'm not totally sure. It's better than you might think. Any critical surfaces get post machined anyway, so I don't worry too much about as-printed tolerances.

The torque tube we gutted ended up...
Forum: projects & restorations 07-13-2020, 02:27 AM
Replies: 416
Views: 466,372
Posted By Karl Buchka
Have I mentioned that you are a crazy person? ...

Have I mentioned that you are a crazy person?

Loving the work and the videos. You do a great job with both.

When are we starting an "idiotic forever project car" support group?
Forum: projects & restorations 06-24-2020, 08:41 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Thanks guys! The support structure is mainly...

Thanks guys!

The support structure is mainly there for thermal reasons. Plastic powder bed printers can keep the entire volume just below the melting point of the material and just add a small...
Forum: projects & restorations 06-18-2020, 02:41 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Got some additional printed parts that wouldn't...

Got some additional printed parts that wouldn't fit with the manifolds. These are turbo oil drain flanges with support brackets built in. The hole in the bracket gets tapped to 1/4-28 and holds a rod...
Forum: projects & restorations 06-07-2020, 05:01 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Exhaust manifolds just came out of the printer...

Exhaust manifolds just came out of the printer today. Total machine time was around 55 hours. They are Inconel 625 with 1mm walls, twin scroll collectors, and EGT ports.
...
Forum: projects & restorations 06-01-2020, 01:58 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Thanks, Bob! Mocked up the new driveshaft...

Thanks, Bob!

Mocked up the new driveshaft adapter today. It fits very nicely. This will let us run the standard Corvette torque tube input shaft, but with an exposed flange. The transmission will...
Forum: projects & restorations 05-30-2020, 04:48 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Red is the new purple. Just had the latest rev of...

Red is the new purple. Just had the latest rev of the Stack circuit board delivered. It's got smattering of mods and simplifications. Fewer button inputs, larger mounting holes, two layer PCB instead...
Forum: aftermarket engine management 05-28-2020, 02:32 PM
Replies: 20
Views: 7,895
Posted By Karl Buchka
These conclusions are wrong.

These conclusions are wrong.
Forum: aftermarket engine management 05-26-2020, 11:12 PM
Replies: 20
Views: 7,895
Posted By Karl Buchka
I don't see any obvious issue with a ~2.5k...

I don't see any obvious issue with a ~2.5k pullup. The input impedance of the micro is orders of magnitude higher than that. You might want to look at the code that samples the input and make sure...
Forum: aftermarket engine management 05-26-2020, 10:06 PM
Replies: 20
Views: 7,895
Posted By Karl Buchka
You should definitely put a scope on the signal...

You should definitely put a scope on the signal if you actually want to figure out what's going on. A multimeter isn't going to give you enough information.
Forum: aftermarket engine management 05-26-2020, 01:02 AM
Replies: 20
Views: 7,895
Posted By Karl Buchka
The speedo signal is an open collector output. If...

The speedo signal is an open collector output. If you don't have the stock ECU connected then the voltage should be whatever you pull it up to.
Forum: performance & modifications 05-05-2020, 09:06 PM
Replies: 8
Views: 2,608
Posted By Karl Buchka
I think they're both pretty equivalent. As far as...

I think they're both pretty equivalent. As far as I can tell, the Classic Swede one is a knockoff of my design, but get whichever one you feel more comfortable working with.

The Classic Swede...
Forum: performance & modifications 04-29-2020, 02:11 AM
Replies: 4
Views: 1,431
Posted By Karl Buchka
If you don't want to bother with the tone ring...

If you don't want to bother with the tone ring you can use one of these (with an electronic speedo): https://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=837/mode=prod/prd837.htm
Forum: performance & modifications 04-29-2020, 02:02 AM
Replies: 4
Views: 1,431
Posted By Karl Buchka
Are you using an electric speedo? If so, that...

Are you using an electric speedo? If so, that speedo has an output that is designed to feed the stock LH2.4 ECU. You could pipe that to the M4.4.
Forum: aftermarket engine management 04-20-2020, 01:20 AM
Replies: 6
Views: 3,041
Posted By Karl Buchka
Are you sure it's not a TC4427? That's a dual...

Are you sure it's not a TC4427? That's a dual channel mosfet driver that matches the pinout of what's in your photo.

https://www.microchip.com/wwwproducts/en/TC4427
Forum: projects & restorations 04-11-2020, 04:01 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Thanks, Doug! Yeah, but only one end...

Thanks, Doug!



Yeah, but only one end of the car. Couldn't afford a second third member.
Forum: projects & restorations 04-02-2020, 08:57 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Here's a short video showing off the latest...

Here's a short video showing off the latest firmware on the Stack dash. It shows boot up menu, configuration options, and one of the display pages.

<iframe width="560" height="315"...
Forum: projects & restorations 03-06-2020, 04:24 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Some updates: The primary structure is now...

Some updates:

The primary structure is now completely done. Every single joint in the chassis that you can see is finish welded.
https://i.imgur.com/p871KPgh.jpg

Ordered a sequential shift...
Forum: projects & restorations 02-25-2020, 03:54 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Yeah, absolutely. Coincidentally, the shop...

Yeah, absolutely. Coincidentally, the shop featured in that Papadakis video is the same shop that's printed our intake manifold and will be printing our exhaust manifolds. They do amazing work.
Forum: projects & restorations 02-25-2020, 03:03 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Thanks! They will be printed from Inconel 625 in...

Thanks! They will be printed from Inconel 625 in several pieces, then welded together.
Forum: projects & restorations 02-21-2020, 01:31 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
I guess this should get updated. It's been a...

I guess this should get updated. It's been a while. Here's a greatest hits summary since you saw it last.

Profiled the bellhousing:
https://i.imgur.com/Z27XYQ5h.jpg
...
Forum: article composition 05-06-2018, 10:00 PM
Replies: 103
Views: 133,293
Posted By Karl Buchka
Yes. It was hacky, but it worked.

Yes. It was hacky, but it worked.
Forum: website & board 11-15-2017, 05:22 AM
Replies: 47
Views: 10,647
Posted By Karl Buchka
New version of vbulletin?

New version of vbulletin?
Forum: maintenance & nonperformance 11-09-2017, 02:05 PM
Replies: 20
Views: 2,858
Posted By Karl Buchka
That's always how I pull my T5. I think it's...

That's always how I pull my T5. I think it's easier than trying to reach all the bolts and wrangle the bellhousing past the trans tunnel and exhaust.
Forum: projects & restorations 11-09-2017, 12:36 PM
Replies: 3,181
Views: 1,212,541
Posted By Karl Buchka
Have you looked at Technafit's catalog for...

Have you looked at Technafit's catalog for fittings and adapters? They're a fraction of the cost of Earl's and are high quality. I use them for everything these days. Oil, clutch, brakes, power...
Forum: performance & modifications 11-09-2017, 12:27 PM
Replies: 9
Views: 4,038
Posted By Karl Buchka
Other options: Use a LH2.2 EZK and distributor...

Other options:
Use a LH2.2 EZK and distributor with an LH2.4 fuel computer.
Use a flat flywheel with a 60-2 cut in to it and a stock LH2.4 crank sensor.
Forum: maintenance & nonperformance 11-03-2017, 10:08 PM
Replies: 3
Views: 2,310
Posted By Karl Buchka
He's asking about rear seats. The rears are...

He's asking about rear seats. The rears are identical.
Forum: performance & modifications 10-29-2017, 05:36 PM
Replies: 44
Views: 8,263
Posted By Karl Buchka
The lack-of-ring-gear pic cracked me up. We've...

The lack-of-ring-gear pic cracked me up. We've all been there. You just gotta laugh it off. It makes for a funny story down the road.

To answer your earlier question: The ring gear is what the...
Forum: performance & modifications 10-20-2017, 01:59 PM
Replies: 24
Views: 10,164
Posted By Karl Buchka
Keep in mind that the AW30-40 came in RWD...

Keep in mind that the AW30-40 came in RWD vehicles from other manufacturers and they (to my knowledge) all share the same bellhousing to transmission bolt pattern. This means that you can use adapter...
Forum: showroom 07-02-2017, 09:45 PM
Replies: 71
Views: 15,126
Posted By Karl Buchka
Back from the dead bump. Finally got the car...

Back from the dead bump. Finally got the car sitting level on coilovers/adjustable rear perches. Very happy with how it turned out.

<img src="http://i.imgur.com/pDXsQDS.jpg" height=600>
Forum: aftermarket engine management 06-27-2017, 09:09 PM
Replies: 13
Views: 4,519
Posted By Karl Buchka
Use the S80 coils. 960 coils don't have built in...

Use the S80 coils. 960 coils don't have built in transistors and use the ****tiest connectors known to man.
Forum: aftermarket engine management 06-21-2017, 02:03 PM
Replies: 49
Views: 14,661
Posted By Karl Buchka
There's a thread on the msextra forum where the...

There's a thread on the msextra forum where the guy says he's tried to get a license several times, but for whatever reason they won't grant him one. I think the guy's gripes are justified and he...
Forum: aftermarket engine management 06-16-2017, 01:11 PM
Replies: 7
Views: 3,468
Posted By Karl Buchka
Correct. You can use the example under "Logic...

Correct. You can use the example under "Logic Level 3-wire" here: http://www.msextra.com/doc/pdf/html/MS2V357_Hardware-3.4.pdf/MS2V357_Hardware-3.4-85.html

I can't speak to the number of spark...
Forum: aftermarket engine management 06-16-2017, 01:00 PM
Replies: 7
Views: 3,468
Posted By Karl Buchka
The four-pin ME7 coils have built in power...

The four-pin ME7 coils have built in power transistors. The two-pin 960 coils do not.
Forum: projects & restorations 06-12-2017, 05:08 PM
Replies: 3,039
Views: 1,214,187
Posted By Karl Buchka
Bump.

Bump.
Forum: projects & restorations 06-05-2017, 03:40 PM
Replies: 688
Views: 332,325
Posted By Karl Buchka
The ABS hubs fit non-ABS spindles with no issue....

The ABS hubs fit non-ABS spindles with no issue. I'm currently running that combo on my car.
Forum: showroom 06-03-2017, 04:28 AM
Replies: 25
Views: 8,008
Posted By Karl Buchka
That. Is. Awesome.

That. Is. Awesome.
Forum: maintenance & nonperformance 05-31-2017, 04:22 PM
Replies: 22
Views: 5,967
Posted By Karl Buchka
Fake suede: ...

Fake suede:

https://lh3.googleusercontent.com/-O-KJSUBrZgQ/VOhLe00g_II/AAAAAAAAgz8/9TvCXlk8UGI/s1024/2015-02-20%25252023.46.28.jpg
Forum: projects & restorations 05-31-2017, 04:03 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Thanks guys. If the rubber bulb weld sucker...

Thanks guys.

If the rubber bulb weld sucker doesn't work to lift those tubes out, we have a backup plan in place: http://forums.turbobricks.com/showpost.php?p=5446522&postcount=571
Forum: performance & modifications 05-15-2017, 01:36 AM
Replies: 12
Views: 3,005
Posted By Karl Buchka
I don't know of anyone off the top of my head...

I don't know of anyone off the top of my head that stocks a stainless header. There are several Swedish vendors that sell mild steel headers.

Have you considered getting your stock manifold...
Forum: projects & restorations 05-12-2017, 05:26 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Sorry man, I don't have anything like that.

Sorry man, I don't have anything like that.
Forum: projects & restorations 05-12-2017, 05:18 AM
Replies: 783
Views: 728,165
Posted By Karl Buchka
Decided to drop the body down on to the frame...

Decided to drop the body down on to the frame today.

The cowl panel needed some notching to get it low enough.
...
Forum: projects & restorations 05-10-2017, 04:28 PM
Replies: 434
Views: 334,721
Posted By Karl Buchka
So by your logic he should stick to bolting on...

So by your logic he should stick to bolting on second hand IPD parts so as not offend you with his privilege? :???:
Forum: projects & restorations 05-09-2017, 12:36 AM
Replies: 631
Views: 357,491
Posted By Karl Buchka
She's a sharp lookin' strong runner!

She's a sharp lookin' strong runner!
Forum: aftermarket engine management 05-08-2017, 04:33 AM
Replies: 2
Views: 2,809
Posted By Karl Buchka
You can use a spare output channel on your...

You can use a spare output channel on your megasquirt to drive the tachometer. Basic/Load Settings > Tacho Out.
Forum: maintenance & nonperformance 05-06-2017, 10:05 PM
Replies: 30
Views: 9,680
Posted By Karl Buchka
That looks amazing! I can't wait to get it back!

That looks amazing! I can't wait to get it back!
Forum: projects & restorations 05-03-2017, 06:56 PM
Replies: 783
Views: 728,165
Posted By Karl Buchka
As mentioned earlier in the thread, we're...

As mentioned earlier in the thread, we're planning on using a Link G4+T to control the engine. The engine uses fairly conventional engine-oil fed cam phasors for VVT that requires closed loop control...
Forum: projects & restorations 05-03-2017, 04:14 PM
Replies: 331
Views: 106,033
Posted By Karl Buchka
Maybe not a great reference, but my '92 245...

Maybe not a great reference, but my '92 245 averages about 25mpg highway if I keep it at 75mph. I've done better, but that was with a tail-wind. It's got a stock B230FT, chipped LH2.4, .79 or .81 5th...
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