I bought a Jab 330 and FWF kit back in December, from Jabiru N.A.

There is a measurement discrepancy on the engine mount, so I sent an email to Lightning - four times, the first on July 08 and the last on Aug 13, and no reply.

I am pasting the email below... Does anyone have an idea on how to fix this problem?

I was doing a quick trial fit of the engine mount on the (Zodiac CH601) firewall, when I noticed a discrepancy between bolts on the firewall and holes on the mount.
The distance between the top bolts is, per plans, 856 mm, but the distance between the centre of the (top) holes on the engine mount is 860 mm.
The bottom holes are properly spaced, at 610 mm.

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Are you saying the mount is 4mm wide? If so, pull it together and put in the bolts. A welded assembly is seldom perfect. Common on motor mounts.

Hello, Jay

I could do that, but then the opposite end of the mount gets distorted...

Perhaps the best approach is to attach the engine to the mount and then squeeze the top arms so the (hopefully) match the bolts.

Wondering what others have done...?

Thanks Jeff - I do have the video, will take another look

I agree, I would not "pre-stress" an assembly designed to take the stress forces from the engine torque and pull of the prop. 

Don, thanks for the comment

No defense of Arion Lightning (who took over the Jabiru NA dealership), but did you ever just simply give them a telephone call?  Most vendors do very well with email support, but some, not so good!  I had the same experience with their predecessor, Jabiru NA - I don't think they ever responded to an email support query. However, if I called them during normal business hours, virtually 100% of the time I was immediately connected to Pete Krotje and he promptly and satisfactorily took care of my question or problem.

I've had the same experience with a few (very few!) other vendors - while most have great email support, some do much better at answering the phone!  :>)



John, I think I have been spoiled by ZAC... They reply to all my emails within 24 - 48 h,and when they done't, it's usually because they are busy with something (such a Sun + Fun, Osh, etc.)

You are correct about the phone... but as luck (or lack thereof), when I called Lightning this week, they were closed for Thanksgiving...

Thanks for your comments


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