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Tamiya Porsche 934- RSR for the road!


jaymcminn
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This is Tamiya's Porsche 934 RSR kit... the 1/12 scale kit from the mid-70's that helped cement Tamiya's reputation as a great kit manufacturer. This is a mid-90's release that I've had for a while. I didn't take enough pics during construction for a proper WIP thread, so I'm posting under glass with some of the construction pics included. 

The idea here was to envision this iconic car as a canyon-carving street car... not so far-fetched as shops like Canepa Designs have been converting these to street cars the last few years. The Jagermeister release contains treaded tires and a passenger seat to make that task doable. 

I started off with the body. I like to do a bunch of test-fitting and fettling right off the bat here so I don't run into any surprises down the road. I ditched the friction-fit door closure (basically a tab that comes off the soft vinyl interior door panel and pushes against the door jamb) and went with three neodymium magnets to help hold the doors closed. The doors needed attention to address some nasty gaps... I needed to do this on the Tamiya 1/12 240Z a few years back as well. Thin styrene square stock filled the gaps and I sanded the edges down to get an even door gap all the way around. 

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Next I addressed a nasty fitment issue of the front bonnet. The bonnet bowed up toward the middle. Every body and bonnet I've seen from the 934/935s does this so I'm not sure where the problem lies. Issue shown below with a spare 935 bonnet...

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I clamped the bonnet down and trained a blow dryer on high heat over the back edge as well as the compund curve at the middle of the bonnet. This is the result...

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Next, I added the drip rail along the roofline using styrene stock. I also scored along the fender flare line to create a groove to flow flat black paint into to replicate the welting between the flare and body on the 1:1. It's a really noticeable detail that's missing from the Tamiya kit.

 

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Many 934's have the rear fascia removed below the bumper. I decided to do this to show off more of the turbo plumbing and exhaust. Photoetched saws are perfect for this kind of work.

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The body was then primed with Tamiya white primer and painted in Tamiya Camel Yellow, which is pretty close to Porsche's 70's Talbot yellow. I polished the yellow paint out without clearcoat. I didn't get any in-progress pics of the body paint process, which is kind of why I didn't do a full WIP on this build, so we'll just skip on...

I used Scale Motorsports' Faux Fabrix paint for the interior. The only color it comes in these days is red. 934s came from the factory with carpeted interiors and a fuzzy dash to reduce glare. I masked off the semi-gloss black floorboards and sprayed the Faux Fabrix followed by flat black to represent the carpet on the dash and interior. 

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I actually rather liked the seats in the red, especially against the black interior and yellow body. I used the kit harness parts as well as some 1/12 PE hardware for the driver's harness. The passenger... better find something to hold onto.

 

 

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The engine responds beautifully to some simple plumbing and weathering. I replaced the fuel injector lines with Top Studio turned metal fittings. Finishes are a combination of Tamiya acrylics, Model Master metalizers, airbrushed Molotow Chrome and Tamiya weathering master pastels.

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The fuel tank, like all the fiberglass pieces, was textured with mixes of Tamiya clear orange and smoke. Bolts are Scale Motorsports PE pieces. Fittings are Top Studio resin pieces. Luckily the terrible seam at the side disappears with the tank in place...

 

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Other underbonnet bits and bobs...

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I made the interior fire suppression pipes from 1/16 aluminum tubing. The ties were made from 1/32 Chartpak tape. I tried the Model Factory Hiro 3d printed zip ties and they were a pretty conclusive (and expensive) failure. 

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Body and chassis getting closer...

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AAAAAAAAND.........

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Custom plate came from RC Plate Shop on a scratchbuilt mount. I'm torn over installing the front plate... I'm inclined to leave it off at this point. Fender rivets are Hobby Design turned metal 1mm conical rivets. License plate lights were scratchbuilt from sprue and sheet styrene. Hood pins are 3d-printed units I got from Spot Model. Overall this kit was incredibly fun, insanely challenging (the steering u-joint at the steering wheel broke as I was setting up the photo shoot; it's not something I'm not going to worry about at this point) and builds into a fantastic replica of one of the coolest cars of all time. As always, any questions and comments are welcome!

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17 hours ago, iamsuperdan said:

Stunning build!

I think this is probably one of my fav builds that I've seen here.

 

Thanks! Coming from someone who basically has to review everything on the forum that means a lot!

 

19 hours ago, Kah puts said:

Just fantastic, attention to detail paid off. 

Thanks! I spent hours poring over pictures of these cars. Two of the Canepa Design cars for sale right now have Flickr pages with over a hundred photos each. Things like the license plate lights and the drip rails would be easy to pass over without putting in some research. Fortunately the Tamiya kit is so good to start with that the big stuff more or less takes care of itself.

10 hours ago, rrb124@sbcglobal.net said:

My gosh, that shade of yellow. The color of the seats are perfect. The whole thing is killer.

That Camel yellow is an excellent match for Porsche Talbot Yellow, which is a correct period color. It really works on the wild 934. Thanks man!

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Stunning build, Jason. Very clean work, and great attention to details. The shade of yellow is perfect. The RSR makes for a stellar road car. You nailed it. Excellent work all around.

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Thanks for sharing this. It looks great as a road version. Stunning in yellow!  A road version was something I had contemplated doing, but figured that sourcing treaded 1/12 tyres would be tricky. Good to know they were included in your kit though. I wonder if Tamiya are including those treaded tyres with the latest release of this kit. 

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Posted (edited)
9 hours ago, beeRS said:

Thanks for sharing this. It looks great as a road version. Stunning in yellow!  A road version was something I had contemplated doing, but figured that sourcing treaded 1/12 tyres would be tricky. Good to know they were included in your kit though. I wonder if Tamiya are including those treaded tyres with the latest release of this kit. 

Thanks Sonny! If you want the treaded tires you need to look for an earlier release of the kit. Mine was a mid-90s release. If you're looking for one on eBay, look for the Dunlop tire lettering on the box art car.  The newest releases have the treaded Dunlops replaced by no-name slicks, which is actually indicated on the box art. The Dunlop sponsor decals seem to be missing as well... I wonder if Dunlop pulled their licensing. FWIW, I don't think new releases include the passenger seat either. 

Has treads...

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Has slicks...

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Edited by jaymcminn
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4 hours ago, jaymcminn said:

Thanks Sonny! If you want the treaded tires you need to look for an earlier release of the kit. Mine was a mid-90s release. If you're looking for one on eBay, look for the Dunlop tire lettering on the box art car.  The newest releases have the treaded Dunlops replaced by no-name slicks, which is actually indicated on the box art. The Dunlop sponsor decals seem to be missing as well... I wonder if Dunlop pulled their licensing. FWIW, I don't think new releases include the passenger seat either. 

Has treads...

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Has slicks...

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Thanks for that valuable information. Very useful to know. I’ll be looking out for that kit. 

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