T-Rex M-10 Engine Bolts and Nuts - Kawasaki Versys Forum
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post #1 of 12 (permalink) Old 08-23-2019, 08:17 PM Thread Starter
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T-Rex M-10 Engine Bolts and Nuts

I am wondering if anyone has experience with T-Rex engine bolts and nuts provided for the center stand and skid plate. The lower engine bolt "C" on the engine removal diagram requires 32 foot lbs. of torque. I have snapped the threads out of two nuts so far and am wondering if anyone using T-Rex parts has tightened the nuts to spec? It could be my torque wrench, or it could be crap nuts. I have a mechanic friend coming over tomorrow to assist. He's bringing his torque wrench, and I have to have some treads reworked on one side of the bolt. No big deal; but if anyone has experience this, please chime in. I am not please with the parts provided by T-Rex. The engine bolt has a hex key/ allen head on it. I am not sure how you would tighten a hex key to 32 foot lbs of torque. The bolt provided for the skid plate and center stand has two nuts that thread on. Thanks!

I have become comfortably numb.....

Jonny

Last edited by RR Jonny; 08-23-2019 at 08:20 PM.
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post #2 of 12 (permalink) Old 08-24-2019, 12:04 PM
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As 32 foot-pounds is NOT VERY much, and you're wrecking threads - compare your torque wrench w/ your friend's. I expect you'll find that yours is way out...!



I have "allen-head" hex-key sockets in 3/8", so NO problem using w/ torque wrenches, as well as a set in 1/4"!

Fairly inexpensive thru Harbor-Freight Tools.
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post #3 of 12 (permalink) Old 08-24-2019, 02:54 PM Thread Starter
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The mechanic came over today, but he didn't bring his torque wrench. Upon analysis, he said that the lower engine bolt is a secondary support for the engine. There is a nut that requires a "special tool" which adjusts the play in the motor mounting; the motor is technically mounted and adjusted without the long motor bolt in place. This is after looking at the service manual and the Kawi parts ordering page. Strangely enough, Kawi doesn't even show the nut for that bolt.

The reason I went with T-Rex is because they had a center stand and skid plate that were integrated. Still a bit miffed at T-Rex and have an email in to them. The center stand utilizes the lower engine bolt as a mount for the center stand left bracket. It comes with a spacer that's about an 1 3/8 ". That's the spacer included with the center stand for just the center stand.

The skid plate has a bracket that mounts on the same bolt, but it mounts directly with no spacer. So, adding in that skid plate bracket on that bolt should decrease that spacer length by the width of the bracket (1/4 "). We both looked at the installation instructions and agree that the spacer should be shortened by about 1/4 ". He said we can have it machined, but that's not my job. We'll see what old T-rex responds with. You've got a 1 3/8" spacer designed to go between the center stand bracket and the motor, and then you want to shove another 1/4 of steel in there for the skid plate. Hmmmmm - either poor specs on the spacer tolerance or forgot to include the "special" spacer.

Either way - chased the threads, good to go except for the spacer. Honestly, thank God I screwed up. I am thinking there's a spacer issue, and good thing I didn't try forcing the issue installing the skid plate bracket.

I have become comfortably numb.....

Jonny

Last edited by RR Jonny; 08-24-2019 at 02:56 PM.
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post #4 of 12 (permalink) Old 08-24-2019, 03:04 PM Thread Starter
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Originally Posted by fasteddiecopeman View Post
As 32 foot-pounds is NOT VERY much, and you're wrecking threads - compare your torque wrench w/ your friend's. I expect you'll find that yours is way out...!



I have "allen-head" hex-key sockets in 3/8", so NO problem using w/ torque wrenches, as well as a set in 1/4"!

Fairly inexpensive thru Harbor-Freight Tools.
I'll have to pick those up - thanks! It is a Harbor Freight torque wrench that's been pulling the threads out of the nuts.

I have become comfortably numb.....

Jonny
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post #5 of 12 (permalink) Old 08-25-2019, 03:17 PM
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...It is a Harbor Freight torque wrench that's been pulling the threads out of the nuts....
I HOPE it's NOT - I have five H-F torque wrenches (as well as two Snap-Ons plus another...) between AZ and BC.


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post #6 of 12 (permalink) Old 08-25-2019, 04:36 PM Thread Starter
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I HOPE it's NOT - I have five H-F torque wrenches (as well as two Snap-Ons plus another...) between AZ and BC.

When we get time, I'll compare mine to his. I think it's OK. I tested it up to about 25 ft lbs, and it seemed fine. I think the nuts provided for this step were not the best. I have a couple of auto mechanic buddies that may be able to compare these to what they have in the shop.

I did have to go to Lowe's to get a 3/8" drive metric hex key set; I appreciate the advice. I was in the middle of a step, and the bolt was just cranked in by Kawi. Didn't want to wait for shipping, so I just grabbed what was available.

I have become comfortably numb.....

Jonny
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post #7 of 12 (permalink) Old 08-25-2019, 08:02 PM
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I just installed the T-Rex center stand and did not have that issue with stripping the engine bolt/nut. It seemed the spacer was the proper length for me. But I do think T-Rex has sub-par quality control, so you may have gotten a bad spacer.

My quality experience; the bottom of the right and left brackets have 2 tapped M8 holes for the long u-shaped 'brace' that connects each side. On my kit one of the holes on each side only had half the threads tapped and poorly tapped where they existed. When trying to tap it myself, I realize the hole is too large to be tapped to the proper size, M8 x 1.25. I got a longer bolt and used a nut on the backside, no need to wait on a whole new kit from them, but I let T-Rex know about this error.
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post #8 of 12 (permalink) Old 08-25-2019, 08:28 PM Thread Starter
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I just installed the T-Rex center stand and did not have that issue with stripping the engine bolt/nut. It seemed the spacer was the proper length for me. But I do think T-Rex has sub-par quality control, so you may have gotten a bad spacer.

My quality experience; the bottom of the right and left brackets have 2 tapped M8 holes for the long u-shaped 'brace' that connects each side. On my kit one of the holes on each side only had half the threads tapped and poorly tapped where they existed. When trying to tap it myself, I realize the hole is too large to be tapped to the proper size, M8 x 1.25. I got a longer bolt and used a nut on the backside, no need to wait on a whole new kit from them, but I let T-Rex know about this error.
I haven't gotten to the "U" bolt yet, but thanks for the heads up! I am doing the skid plate and the center stand at the same time. I had to get a shorter bolt to mount the right side rear skid plate bracket to the center stand because it was hitting the exhaust/muffler when it went through the tapped hole on the center stand bracket. The front right skid plate mount is also a bit off. I will resolve the issue tomorrow.

I haven't worked on anything mechanical in a while, but I try to enjoy the process. Yeah, stuff's a bit off, but you figure things out. The bars seem fine, the skid plate is sturdy, the center stand will be nice, and it is what it is. It isn't worth losing sleep over or getting riled up. Their engineering/ QC isn't the greatest, and we shouldn't have to modify things. I spent the last 10 years mostly in China - compared to what goes on there....I've seen worse; a lot worse. I have been very pleased at the quality and selection of fasteners at Menards - learned a lot thanks to T-Rex!

Not to leave T-Rex all alone, I have run into a couple of Kawi issues as well. Not as bad as T-Rex, but QC issues nonetheless.
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I have become comfortably numb.....

Jonny

Last edited by RR Jonny; 08-25-2019 at 08:48 PM.
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post #9 of 12 (permalink) Old 08-28-2019, 07:41 PM
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@RRJonny check the weld on the spring perch on the right side bracket.
The spring perch just popped off of mine after the 2nd time deploying it. About to start a separate thread with more details on the issue, once I figure out how to post photos

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post #10 of 12 (permalink) Old 08-28-2019, 07:58 PM Thread Starter
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@RRJonny check the weld on the spring perch on the right side bracket.
The spring perch just popped off of mine after the 2nd time deploying it. About to start a separate thread with more details on the issue, once I figure out how to post photos

Sorry to hear. My welds look robust, but they're not pretty. I will use what I have, and I will do my best to maintain it. T-Rex will not be getting any more of my business. It's refreshing to get honest feedback. I would not recommend these products.

I advise just getting it welded properly. I was not impressed by their customer service.
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I have become comfortably numb.....

Jonny

Last edited by RR Jonny; 08-28-2019 at 08:07 PM.
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post #11 of 12 (permalink) Old 08-29-2019, 07:34 AM
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@RRJonny check the weld on the spring perch on the right side bracket.
The spring perch just popped off of mine after the 2nd time deploying it. About to start a separate thread with more details on the issue, once I figure out how to post photos

https://www.kawasakiversys.com/forum...otobucket.html
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post #12 of 12 (permalink) Old Today, 06:31 PM Thread Starter
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Well - They Got Back With Me - 2 Weeks

Just to keep up on the T-Rex issues. They will be getting a new spacer my way. It only took them 2 weeks to respond to my email. At least they responded, they're acting on the issue and I apparently was correct.

I have become comfortably numb.....

Jonny
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