Carl Heideman
Carl Heideman
10/18/18 8:32 a.m.

Like stories like this? You’ll see every article as soon as it's published by reading the print edition of Grassroots Motorsports. Subscribe now.

Story and Photos by Carl Heideman

What is probably the least exciting part of any engine swap? We heard “gas pedal.”

Now, what is probably the one thing that separates an okay engine swap from a great one? Yes, the gas pedal.

This step may seem trivial, but think about how much you interact with your car’s gas pedal. It’s one of the principle ways you communicate with your car, and it’s directly responsible for translating your input into speed.

It has to modulate the throttle with finesse without ever sticking, binding or flopping around. And in the case of our Miata-powered MGB project, we had a self-imposed rule stating that everything needed to be built from only MGB or Miata parts.

To create a throttle linkage that meets these standards, we had to crunch some numbers and put a few of our shop tools to use. After about 3 hours of work, we had a finished product that looked and operated like it was factory-built.

Read the rest of the story

Ram50Ron GRM+ Memberand Reader
10/18/18 10:07 a.m.

Another great article with beautiful fabrication Carl!  I really enjoy these.

Tom Suddard
Tom Suddard GRM+ Memberand Digital Experience Director
10/18/18 10:08 a.m.

Glad you're enjoying them! Do you subscribe to the print magazine, too?

freetors Reader
10/18/18 12:08 p.m.

I personally (and many other mgb owners) felt that the stock throttle pedal is extremely uncomfortable because it sits so close to the seat. Sure you can move the seat back but then you can't push the clutch all the way in. This puts your right ankle at an acute and very uncomfortable angle. I shortened mine between the bend and the pedal, putting it further away by a good inch. It helped tremendously but I wish I would've gone further.

Of course with a Frankenstein car YMMV.

Ram50Ron GRM+ Memberand Reader
10/18/18 12:18 p.m.

In reply to Tom Suddard :

I do. Started a subscription earlier this summer.

Tom Suddard
Tom Suddard GRM+ Memberand Digital Experience Director
10/18/18 12:29 p.m.

In reply to Ram50Ron :

Awesome! Thanks for reading, and for supporting the website!

dculberson UltimaDork
10/18/18 12:37 p.m.

Yeah, this was pretty great. Yes the subject seems simple but this bite sized fabrication makes it possible to understand what's going on and really get a good picture of how to do it yourself. I found myself actually saying out loud "wait a second!" when looking at the step from welding the ledges of steel into the tube to sanding it smooth with the combination sander. That was pretty awesome. Very impressive work, made simple and clear by the article. I love that you worked with what's there (the Miata throttle cable) versus just fabbing up a custom cable that could be a maintenance issue or quality issue down the road.

Torqued New Reader
10/18/18 10:59 p.m.

Thoughtful planning and careful measuring produced a simple but elegant solution.  I've been following this series of articles closely - dreaming of one day making a similar swap into my GT6. Looking forward to future articles in this series.

oneway None
10/19/18 10:30 p.m.

I really enjoy your magazines and love the on line info.  The best part of many of your articles is that the average person with a reasonable budget for tools and supplies can do some of these super neat fabrication projects without breaking the bank.  I truly appreciate a hand fabricated item, even if not perfect and polished, over a specialty part purchased usually at a significantly higher price.  Although sometimes the hours spent designing, redesigning, fabricating, and refabricating make the price on that specialty part seem not so bad.  But then again that eliminates all the challenge and fun of the project-priceless!  Keep up the good work!  First time posting.  Currently have 2 project cars-68 Datsun 2000 roadster and 78 Datsun 280Z 2+2.  Thanks, John-Lugoff, SC.

Carl Heideman
Carl Heideman
10/21/18 8:47 p.m.

Thanks for the kind words, guys.  The project was on hiatus as the body was at the painter.  It's back from paint now and we're getting ready to start reassembling it.  You'll start to see some more stories as we wire it up, make it run, dyno it, and sort it out.

Karl La Follette
Karl La Follette UltraDork
10/28/18 9:38 a.m.

 Nice Deal ! Thanks


Our Preferred Partners