RX7 Rear End, Stock Bump Stops and Stock U-Bolts

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tjp
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RX7 Rear End, Stock Bump Stops and Stock U-Bolts

Post by tjp »

Need to pick the brains of anyone who has installed this assembly.

As you can see, the stock bump stop is not centered on the mounting plate. How crucial is the placement of the bump stop?

As you can see, I have gaps on one side of the axle between the mounting pedestal and the U-bolts, but not on the other. On a stock rear axle the
U-bolts are tight to the pedestal on both sides. Is this issue I am seeing on my RX7 axle simply sloppy fabrication when the RX7 axle was modified? How big a deal is this gap going to be? I do not yet know if I will have this gap on the other side since I stopped after finding these concerns.

Right now I have the bump stop the oposite of the stock orientation but not torqued into place. If I spin it around do you think that the gap I see will go away?

thanks
tim
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Last edited by tjp on Thu Apr 27, 2023 4:12 pm, edited 1 time in total.
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Re: RX7 rear end

Post by Redef90 »

Following!!!!! I want to do. This but I’ll like to know more information on it
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Re: RX7 rear end

Post by tjp »

Redef90 wrote: Wed Jan 25, 2023 8:26 amFollowing!!!!! I want to do. This but I’ll like to know more information on it
The replies I asked for were via PM so that is what I have been received. Thanks to those who have replied.

I am certain that you can fine information on this swap on this site if you search for it. I personally can rarely find anything on this site. I must be searched challenged.

good luck
My junk pile:
71 Jeep Gladiator. Restored w/#s matching engine. My WeeBeasty
70 1600 legit 2nd owner. Stroked and bored
Several salvaged w access to a barn full of parts, part cars & whole cars
......What's in the barn is for sale. What do you need?
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Re: RX7 Rear End, Stock Bump Stops and Stock U-Bolts

Post by tjp »

OK, so I did the other side with the bump stop oriented correctly and I still have a gap between the U-bolt and axle perch.

There is no gap anywhere else along the U-bolt down to the dampener mount plate.

Is this gap going to be a problem?
My junk pile:
71 Jeep Gladiator. Restored w/#s matching engine. My WeeBeasty
70 1600 legit 2nd owner. Stroked and bored
Several salvaged w access to a barn full of parts, part cars & whole cars
......What's in the barn is for sale. What do you need?
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Re: RX7 Rear End, Stock Bump Stops and Stock U-Bolts

Post by tjp »

Anyone?
My junk pile:
71 Jeep Gladiator. Restored w/#s matching engine. My WeeBeasty
70 1600 legit 2nd owner. Stroked and bored
Several salvaged w access to a barn full of parts, part cars & whole cars
......What's in the barn is for sale. What do you need?
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Re: RX7 Rear End, Stock Bump Stops and Stock U-Bolts

Post by Gregs672000 »

Hey Tim, I have an RX7 set up with Flex Form momo-leafs and lowering blocks, but I didn't use the bump stops. I am happy to look at mine but I need to better understand what gap you're referring to...
Greg Burrows
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tjp
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Re: RX7 Rear End, Stock Bump Stops and Stock U-Bolts

Post by tjp »

Gap is circled but I've was told by a few others that it isn't a big deal. thanks
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My junk pile:
71 Jeep Gladiator. Restored w/#s matching engine. My WeeBeasty
70 1600 legit 2nd owner. Stroked and bored
Several salvaged w access to a barn full of parts, part cars & whole cars
......What's in the barn is for sale. What do you need?
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Re: RX7 Rear End, Stock Bump Stops and Stock U-Bolts

Post by TurboRagtop »

My understanding is that the U-bolts do not provide any lateral (side-to-side) location of the rear axle housing. The location of the axle housing is performed by the pin that fits into the axle perch.
I could be wrong but I believe the U-bolts only provide tension to clamp the lower plate to the axle housing. Thus they do not do any locating of the axle housing, side-to-side. I would put it in service and inspect periodically, like once a week for the first 2 months, then semi-annually.
Karl Payne, Gilbert, AZ
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