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Petty 1968 Roadrunner


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#41 roadhawg

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Posted 22 March 2012 - 02:31 AM

If I'm not mistaken, I do believe the original Cannonball Run Chevelle kit had a bathtub intake like that.

#42 roadhawg

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Posted 22 March 2012 - 02:44 AM

Ok, a little further research leads me to believe that ALL of the early MPC Nascar kits had that intake, even the Fords. As far as the scribe line under the hood, the best fix is to fill it with baking soda/superglue.

#43 camaroman

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Posted 22 March 2012 - 03:22 AM

Watching this one...

#44 rv1963

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Posted 22 March 2012 - 03:23 AM

Interesting build i have several pictures of engines with intake setups very much like this i will post them maybe they will help.

Edited by rv1963, 22 March 2012 - 03:41 AM.


#45 rv1963

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Posted 22 March 2012 - 03:57 AM

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A few pics from a book on stock cars maybe they can help first one is from 1964 than 69 and 70.

#46 Futurabat

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Posted 22 March 2012 - 05:03 AM

Ok, a little further research leads me to believe that ALL of the early MPC Nascar kits had that intake, even the Fords. As far as the scribe line under the hood, the best fix is to fill it with baking soda/superglue.


You are correct sir. The only real difference in any of the MPC stocker kits all the way up to the Southern stockers, was the body, valve covers and firewalls. Virtually every other piece from engine to chassis was the same. Generic. There were also three styles of wheel. Steelies in the earliest kits, then five and nine slot racing wheels. They basically took the common tire thing a bit too far.

Baking soda and superglue will work, but in this case I recommend gluing in some half round plastruct into the grooves under the hood and going from there. Only because of the amount of sanding this particular hood requires to get a smooth upper surface.

#47 Scottnkat

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Posted 22 March 2012 - 02:16 PM

Thanks for the pics, Robert.

Tommy and Jacen, thank you for the info on those kits. I have searched my extra kits, but don't have one of those old MPC kits. So, I may be stuck with my homemade version - not as pretty, but it will still work. :)

#48 Scottnkat

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Posted 22 March 2012 - 03:16 PM

Well, I've been trying to do these builds with a degree of accuracy, but within my limited one-income/six kids budget - although I would like to strive for accuracy, there are some areas that I will simply have to concede and make concessions - the intake manifold is one of those.

But on the bright side, here's a pic that shows the back of the chassis pretty darn well - looks like at least most of the fuel cell was covered as well:

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So I have decided to cut the fuel cell I had built out of this build and just cover it up!

#49 Scottnkat

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Posted 22 March 2012 - 05:34 PM

Here's where we are with the chassis now. Based on the photo above, I have removed the gas tank so the fuel cell will fit flat and I can cover the back part of the fuel cell appropriately - yes, it will still be there, but covered up a bit.

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I have also started work on the engine itself

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Edited by Scottnkat, 22 March 2012 - 05:35 PM.


#50 Bartster

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Posted 22 March 2012 - 06:06 PM

That looks so cool, Scott. I was gonna offer to let you borrow my Mopar or no car" dvd. It has a very good view of Pete Hamilton's '70 Superbird engine that shows the intake up close & personal,lol. Looks like you have some decent ref pics, but your welcome to use it if you want.

#51 Scottnkat

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Posted 22 March 2012 - 06:12 PM

Thanks for the offer, Bart, but like you said, I have plenty of reference pics here now. Still a bit of scratchbuilding to do, but it's starting to come together slowly.

#52 scale trucker

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Posted 22 March 2012 - 06:32 PM

there was a resin version of that intake on ebay still pops up now and then

#53 Scottnkat

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Posted 22 March 2012 - 06:38 PM

Thanks, Gordon - I've been watching that site thinking that someone must have made one at some point - I'll keep my eyes open.

#54 Scottnkat

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Posted 23 March 2012 - 02:58 PM

And the chassis is done for now. I had to finish building the front part of the rollcage around the engine and was test fitting and trimming the fuel cell so I can put that on and still have the back end covered by sheet "metal". I also painted the whole bottom so I could get an idea of how "flat" this was and if it needed further work. Besides, it just looks prettier than all that blue and white and grey....

I was going to paint the sheet metal in a steel color, unless someone knows what color it should be. I know the pics are in black and white, but it seems that it is not the same Petty blue that the body is - hence why I think I'll be painting it silver.

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#55 Rob Spires

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Posted 24 March 2012 - 03:16 AM

I enjoy following your builds, you do a great job!

Here's a link to a thread on the Randy Ayers board specifically about this car. Those guys sure know their stuff...
http://randyayersmod...pic.php?t=28058

Keep up the great work!

#56 Scottnkat

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Posted 24 March 2012 - 12:46 PM

Thanks for that link, Rob - certainly is helpful!

#57 LURCH426

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Posted 25 March 2012 - 06:13 AM

Great to see some one do this build.I've been wanting to do his 1967 Plymouth that he won 27 races with.

#58 Scottnkat

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Posted 25 March 2012 - 03:46 PM

Well, the engine is coming along. Here's how it is so far...

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Edited by Scottnkat, 25 March 2012 - 03:47 PM.


#59 Scottnkat

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Posted 25 March 2012 - 03:48 PM

Great to see some one do this build.I've been wanting to do his 1967 Plymouth that he won 27 races with.


I am planning on building that, too. I'd be interested in watching your build of it when you do get started.

#60 Scottnkat

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Posted 25 March 2012 - 03:53 PM

One thing that this Roadrunner model is missing is shock absorbers. It has two for the rear differential, but that's it. So, we need to make some. Let's start with some small plastic tubing.

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We will need to make four shocks, so we are going to cut eight pieces of this 1mm wide as so:

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We then cut four lengths 8mm long. Once we have those, we glue four of the small tubes on top of the four longer tubes. It should look like this:

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We've now made what will be the tops of the shocks. Now we need to get started on the other half...