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These photos were taken by Denny Aungst and have been released to the garage club.
See my detailed vehicle pages:

"1971 Oldsmobile"
"
MR2 Spyder Page"
"
RZ350 Page"
"
XL883R Page"
"
1936 Desoto Page"
"
1965 Mustang 2+2"
"
1930 Plymouth Coupe"


Denny Aungst made it into an article for Newsweek Magazine. Haven't read it yet?
Click Here.



A little about me:
I am from Central Pennsylvania in a town called Pine Grove. Click on my picture below if you want to read more about me:

A picture of Melissa & me. We were enjoying an evening at Beaver Springs Dragway.



(click for Dirt Bikes&
Old Racing Photos)


See my
old Racing Videos:



My new "Car Barn"



My various rides:


My first car!


My sports car!

2001 Toyota MR2

My new Bike!

2003 Harley 883r
100th Anniv. edition


My antiques!

1936 DeSoto S1
Touring Sedan


1930 Plymouth Coupe

Melissa's dream ride:

1965 Mustang 2+2

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Denny Aungst
 1984 Yamaha RZ 350

Pg. 3 Engine replacement.
[ Page 1 | Page 2 | Page 3 | Page 4 | Page 5 | Page 6 ]

Under construction: An Online RZ350 tech manual.
Complete with PDF files for parts and carburetors, some problem area tech tips, and some of my old racing photos. If you look for something and it's not there,
email me your tech questions.


Check out these two scans from the sales brochure.
Click to enlarge.

Cool link: 2-Stroke Engine Basics

After a quick washing and removal of all the added reflective tape and home-made stickers, I removed the seat, tank, radiator, side panels, etc. this exposed the engine that remained for easier removal.

Here I am, in my basement, starting to disconnect the engine support bolts.

I also had to remove all controls, like the clutch cable, oil pump control, and tachometer cable.

There are extra support bolts underneath the crankcase. The right side case and shifter needed to be removed for clearance.

Once all disconnected, I could lift out the old bottom end. I dread lifting the new one in, it weighed 92 lb. at shipping.

Now, I could see just how bad it really needed to be cleaned. I should get it steam cleaned before installing the new engine, just to make it easier.

Well, it went in the frame better than I thought, even with the cylinders on.

The hardest part seemed to be getting the cables routed properly. Now to hook up the wires.

My pool table has been looking a lot like a motorcycle parts warehouse lately.

The only things on the table to be put on the bike are the yellow parts. The rest is getting together for the spare motor.

First problem crops up. Wires broken out of the wiring harness. These are out of the plug to the charging circuit. Solved by using old plugs from a dead Warrior harness. Worked great!

Next problem. I am assuming THIS is what cause the prior engine failure. The radiator cap inlet is corroded away allowing the antifreeze to bypass the cap. New one is on order. Only, 58 BUCKS!!

Third problem. Found the difference between the 84 and 85 RZ350. See the 3 bullet connectors and 2 plastic connectors? They should look like the 3 plastic connectors in the picture to the right.

Solved by pulling the 1984 Stator assembly from the old engine and installing it in the new engine. Could have used it but I thought that was easier than splicing the wiring harness. It was since I had the proper flywheel puller.

Problem 4. When the engine cooked over, the heat melted the lining in the upper radiator hose. Got a new one coming from Zechman's for 10 bucks.

Cable and hose routing is tricky. There is very little clearance and wrong routing ends up in binding controls or piched lines.

Started to install the chin fairing, but realized I was missing a bolt on the center kick stand. I had to remove this and the right exhaust pipe to replace it.

The fuse box was breaking apart and the previous owner spliced this crude fuse holder inline. I removed the broken fuse holders and installed new inlines.
See below:

Above is a picture of the old stator and flywheel that was installed on the engine I installed. It had to come off the old engine anyway, for me to start disassembling it to begin rebuilding it.
The new inline fuse holders fit into the old box all but one. I used autofuse replacements, so if one ever blew I could find them anywhere. I tried to win a harness on Ebay, but it went to high for my blood.

I still am waiting for the water inlet and cap, but I filled the carbs with gas and decided to attempt to start it. On the second kick the motor fired and ran rough till the carbs cleaned out. I primed the oil injection and shut it down. There is no water in it and I didn't want to get it hot after all this work. Now I am fussing with the minor details. Will get more pictures as it progresses and makes its debut this spring. Meanwhile, check out the engine rebuild happening on the old engine.

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