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Old 11-20-2020, 02:33 PM
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United States, MN, Isanti
Joined Apr 2016
429 Posts
Trader Rating: 140
$400.00 USD
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ZDZ Super 80-RV-J

Very clean with just a few tanks through engine on Redline 32:1
Lots of compression and nice and smooth throttle response with the Tillotson carb and rotary valve induction. Starts in 1-2 flips using the 5,5,1 method. Includes motor with ZDZ ignition, Pitts muffler, motor mount jig & copy of ZDZ operation manual.

Video was taken on 11/19/20 with a Xoar laminated 26x10. I was getting 5960 RPM on the high end and good idle at 1800 RPM. I believe this will improve as motor is fully broken in. Prop not included. I will cover shipping to lower 48

ZDZ Super 80 RV-J Bench Run (0 min 54 sec)


Recommended Starting Procedure
for ZDZ Engines

All ZDZ engines that use a rotary valve with fixed induction timing must use a unique starting procedure as compared to their piston ported or reed valve inducted counterparts.
The starting procedure described below is most commonly referred to as the “5, 5 and 1” method. It is the preferred way to start a ZDZ engine once the carb has been primed.
For brand new engines, a richer low speed needle setting of approx. 2-1/2 turns out is required for initial fuel draw.
Step 1
With the Choke completely closed and the Ignition system OFF, advance the throttle to full open, Flip the prop smartly 5 times.
Step 2
Open the Choke completely, Leave the ignition system in the OFF position, leave the throttle at full open, and flip the prop smartly 5 more times.
Step 3
Reduce the throttle completely and advance the trim to a mid to high setting, turn the ignition system ON, 1 smart Flip and the engine will start!
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Last edited by crankcase; 11-20-2020 at 02:40 PM. Reason: correct date of video
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Old 11-21-2020, 06:36 PM
crankcase is offline
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United States, MN, Isanti
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Trader Rating: 140
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