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 Visible A-990 Hemi

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Zbuckster
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PostSubject: Visible A-990 Hemi   Tue 05 Mar 2013, 4:27 am

OK here we go again. This is the same as the last Visible Hemi I built but it is dressed different. The intake and headers make it the A-990 Super Stock engine. This is also the same engine that Mopar tried to race in Nascar. They did really until Nascar banned the big engine.

I won't go into as much detail on this build as I did on the other because they are so much alike. If you want to see more you can click on the link and read the other OTB.



I will touch on the basic s of the kit and answer some questions that were e -mailed to me by someone that is not a member here.

You start with a big pile of parts.



Eight piece crankshaft. This is not to bad to put together. They have in indexed in such a way. You can't put it together wrong. The hardest part is keeping it straight. I got all the parts ready and the rods ready and then glued it while I put it into the block. The main caps really help keep it straight. Only need to fiddle with it for a couple minutes and it was spinning free as could be.



OK I forgot already. One of the questions ask is how big is 1/4 scale. Huge wasn't a good enough answer so here is a picture of the crankshaft by a ruler.



I hope that helps some. Next the cam driven gear and retainer are put onto the camshaft and then it is placed on the block.



The question was ask. Do you have to time the camshaft. Yes you do. The timing marks are no different than those on a real engine.



Then you add the outside walls of the engine block.



That's it for now. Iam going to work on it some more tonight and will post again tomorrow. If you have any questions just ask. If you are not a member here and have questions you can e-mail me or join the site. Don't be cyber shy. The only one that bites is ProModWrench and they have a shot to cure what you catch. LOL Not really just poking fun at Chris. See you later.

I see I forgot the picture of the kit. I will add it here so I don't have to rewrite all that above.


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Zbuckster
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PostSubject: Re: Visible A-990 Hemi   Tue 05 Mar 2013, 4:46 am

Thanks Don. Iam not sure how many of those cammer Hemi's were built. If I had to guess I would say less than a dozen. It's like the Hemi head that Ford made for the 427 side oiler. I think three sets were made. All of them were given to Mickey Thompson to run on his T-bolt. Peter Klute as the old the car now. Still has the Hemi heads on it.

OK now it's time for pistons and building the block.



Cylinder and walls ready to go on. When these are installed it makes it possible to see the water jacket.



Cylinders installed.





Next there are 4 parts that go together to make the top of the cylinders and lifter gallery.



Time to set this all aside and build the heads.

start with the valve guides.



Rocker arm supports and shafts. The shafts are for alignment only. They will come back out to install the e rocker arms.



Install the valves ,springs and retainers.



And for those that always wanted to know. Here is what it's like to look down the intake runner of a Hemi.



Heads onto the top half of the block.



install the push rods and then bottom half of block and top half get glued together.



Here's a view down through the lifter gallery.



I put the Spark plug boots and tubes together and tested fitted them into the heads.



Put the intake together and install the intake and valve covers onto the block.





Front and rear on engine block go on.





Put the Holley carbs together and put them on.



Now it's time to put the boltons together and install them. fuel lines and filters, oil pump and filter, ignition system, etc. I will be back for one more update when I have all that together and then on to the NMA.

Thanks for looking in. All comments and question are welcome.
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Zbuckster
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PostSubject: Re: Visible A-990 Hemi   Tue 05 Mar 2013, 5:01 am

OK All the do-da stuff has been put together and is ready to onto the engine. Also mount the engine to the display base. This picture shows the drive belt better. It is taken after the engine is screwed to the base but before the flywheel is put on.



The drive belt goes around a pulley that is in the base.

this is the driven pulley before it is glued to the flywheel.





Carbs, linkage, fuel lines and filters, coil and distributor all stalled on block.



Water pump and alternator installed.



The headers were a real nightmare on this build. Here is the left and right header pieces. This is the worst build your own header kit I have ever seen.





When the headers were put together they looked terrible. I sanded all the seams and painted them with real header paint. It left a a funny finish to the headers. I was going to strip and repaint but the more I looked at them the more I liked them. Looks like they have been real hot and the paint started to come off.





Headers are installed.





spark plug wires are cut to rough shape and installed.



That's where this one ends. I will post a NMA showing the finished Hemi. Any questions or comments? They are always welcome.
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