Jump to content
Sign in to follow this  
Zs-ondabrain

R-T diff mount Group Buy

Recommended Posts

Easy enough. You'll be getting the metal ZS30 diff mount. You'll need to buy the Poly GM trans mount from www.jegs.com (P/N 3-1108 ) And also Paint the Mount yourself, to keep it from rusting as it is 3/16" mild steel. The ZS30 Mount can be mounted without removing the tranny or diff.

1) Remove the 4 bolts that hold the Diff Strap to the body of the Z

2) Remove the nut & washers that hold the OEM diff mount to the crossmember.

3) support the diff with a floor jack then remove the 4 bolts that hold the crossmember up.

4) The mustache bar and axles will easily support the diff in the hanging position after you lower the front of the diff. So lower the diff and use 2) 17mm ? wrenches and remove the 2 bolts that hold the OEM diff mount to the diff.

5) Being as how the new diff mount is in the shape of a square "U", you can slip it over the driveline or diff and slide it up into place. You may need to push the fuel lines up a little to clear the new mount. You may also have a rubber clamp on those brake and fuel lines that may need to be removed or moved forward to clear the new Mount. Slide it up and bolt it into place, making sure that the cross plate is facing the rear of the car and the poly mount hole is facing forward. **PICS**

6) When you go to instal the GM Poly Urethane Transmission Mount (P/N 3-1108 in Red or Black) You'll find that the mounting holes need to be widened enough to fit the larger bolts of the diff. And when you do this, keep thes as close to the poly as you can. The holes in the diff are closer together than the holes of the poly mount, so when you drill them larger, push your drill bit towards the poly to narrow the distance between the bolt holes.

7) Place the poly mount on top of the diff, slide the long bolts up thru the diff, place one washer on each bolt as a spacer to raise the poly mount off the diff a bit. Then slide the poly mount onto the bolts, then 1 more washer per bolt and put the nuts on loosely.

8) Place 1 of the 2 supplied poly mount bolts (with a washer and lock washer) thru the hole at the top of the ZS30 Mount, with the head of the bolt facing the top of the tunnel.

9) Raise the diff slowly, while aligning that top bolt with the center hole of the poly mounts 3 top holes. Raise it till you can thread the bolt in. Then continue to tighten the top bolt while raising the diff into place. You can also alternate and continue to tighten the 2 large bolts and nuts of the diff.

When that's all done, go back and double check that all nuts and bolts are tightened. You're done. It's almost simpler than it sounds. Toss the strap, bolt up the new mount, drill the poly mount, mount it to the diff, raise the diff and bolt it all back up.

Hope that's visual enough for most of you. It's pretty fresh in the memory so there ya go.

Dave

post-4921-14150808939525_thumb.jpg

post-4921-14150808939966_thumb.jpg

post-4921-14150808940499_thumb.jpg

post-4921-1415080894094_thumb.jpg

Edited by Zs-ondabrain

Share this post


Link to post
Share on other sites

Hey Stranger, long time no see. I'm sure shipping a hunk of metal to the other side of the pond is possible. How those upgrades working for ya?

Keep your eye on this thread, I'll post when and if they become available for human consumption. haha.

Dave

Share this post


Link to post
Share on other sites

Hi Dave,

So is this a definite "go" on this project? I sent Roostmonkey some money, but I get no response from him. If I can get my money back, I would but one from you.

It will be the exact same design, right?

Marty

Share this post


Link to post
Share on other sites

Keep in mind, roostmonkey only makes them when he has a call for them, then he will make more than enough to satisfy demand at the time and then some. He can't afford to keep a large stock on hand.

I can attest to the quality of his work and it works perfectly when I used a generic bump stop. I didn't have to spend the money on a gm mount or the bolts to mount it. It keeps the driveline in perfect alignment with stock drivetrain just like stock.

There are other ways to contact roostmonkey. Not everybody uses the forwarded reply in their posts. You should pm or email directly.

http://forums.hybridz.org/showthread.php?p=1089962#post1089962

If I were to make a rt mount, I would make it 1/2" shorter to easily clear the fuel and brake lines in the tranny tunnel. Then I would have to cut the bump stop just a bit shorter.

Edited by Darrel

Share this post


Link to post
Share on other sites

So my question is, Is this R/T mount Patented?

Dave

I doubt that it is and most likely it is not for a number of reasons.

First off, a patent application will run you anywhere from $5K - $10K and typically takes more than a year to receive. In addition, there is a patent "annual maintenance fee" of $500 to $1000. Financially, I don't think it would make sense for him. It would also have to be proven unique and different from exisitng designs (which it is, or may be, but again, this has to be technically proven and agreed to by the patent office). It is not an easy process. And if it is challenged, and I beleive it would be, then it gets more costly.

Second, now that the mount has been "produced and advertised", it is not patentable as it qualifies as "existing art".

I did a quick patent search (http://www.patentstorm.us) and did not find this mount defined. I did notice that some of the patents on differential mounts were filed by the big boys (Mercedes Benz, Hyundai). That's a different league and not sure many are capable of competing/challenging them.

I am doubting that the earlier mounts had any patent pending info or paperwork on them which would also be required.

Just my thoughts.

Rich

Share this post


Link to post
Share on other sites

I split this off from the technical discussion and into a new thread in the Group Buy forum. It's gone way past a feeler...

Share this post


Link to post
Share on other sites

Splendid idea!

Put me down for one as well please Dave!

(BTW just out of pure courtesy, I might ask RoostMonkey if he minds if you do this. All legality aside, if it were me, I'de appreciate being asked. We are one big happy family after all!)

Jim

Edited by zKars

Share this post


Link to post
Share on other sites

zKars,

RoostMonkey wrote this "--------------------------------------------------------------------------------

No, I dont have a patent. Actually I used Ron Tyler's basic design ( hence the name " RT mount" ) with his permission and added my own little details to make what I feel is a slightly cleaner product. Theres nothing to stop someone from doing the same. If your thinking of making these, do us all a favor and make them better ( if possible ).Dont just copy this design. I only do this to help you guys out and to put a little cash in the Z fund. "

Which basically says "Have at it" but at the same time "Make it better" I'm trying to keep it at the same price so as to not stray away from or show any real compitition, just expanding the availability.

I called my Metal guy and he's making one up in Aluminum (easier, bendable, etc) so I can bring it home, do a test fit and mesurement and report back to him. If it checks out, I'll have him start producing them.

I want to keep it Simple in it's design. It's been suggested to make it 1/2" shorter, but in doing that, it will also drop the diff another 1/2" and we don't want that. I was also thinking of weight reducing holes on the sides but I don't wanna mess with the integrity or strength of the mount. I'll know more when he delivers the prototype/mock up.

As for a money making venture, not here. To be honest, I'll pay about $35 each, plus $10 for shipping each one in the US. Price of boxes, fuel to pick up, deliver, and return home. I might make $5 each, so it's not in my best interest to do this, but more of a back-up for when RoostMonkey is too busy. So it's basically all out of the love of the car and it's people, that I do this. On top of everything else I'm trying to do.

So by my count,

I want 1.......... (1)

ConchZ........... (1)

vercingetorix.... (1)

Motorman7...... (1)

Diseazd........... (3)

SteveE............ (1)

Zedyone_kenobi (1)

Z_Tyler_Z.........(1)

260ZCaliCar......(1)

MEZZZ.............(1)

ARNE...............(1)

Duffman...........(1)

RT Hunter.........(1)

Nigel1943.........(1)

Marty Rogan.....(1)

nahurry............(1)

Pop's Z............(1)

zKars...............(1)

GreenZZZ.........(1)

That's 21. I'll shoot a message to the metal guy and tell him we're on for the first 30 and tell him to kick A$$ on them. He said he's low on man power around the shop but he'll try and make it a priority. I think I can get this on a Net 30 which will allow me to start selling before all the money is in. We'll see.

Thanks for the Retitle and swap over Arne. I appreciate it.

Dave

Edited by Zs-ondabrain

Share this post


Link to post
Share on other sites

+1, add me please.

Thanks for doing this Dave!

I agree, THANKS for doing this!! Let us know how/when and where to pay, i will be one of the first to send you the $$.

Share this post


Link to post
Share on other sites

Dave, if the demand get's too big, put me to the end of the list. I'm not in any hurry for one.

Share this post


Link to post
Share on other sites

I would like to point out that you do NOT have to use a gm mount with the rt mount. You can use a bump stop along with the stock mount. Less money using bump stops you can get at any auto parts store. This will also keep the diffy at the stock alignment.

I just wanted to point out there are other alternatives when you go with a rt mount.

Share this post


Link to post
Share on other sites
I just ordered a check sent direct from my bank which should arrive at your door the 23rd. Thanks for this effort.

Thanks for getting the ordering started, I really appreciate it.

MEZZZ,

Sorry, you missed out, Conedodger beat ya. hahaha.

Everyone else, Please follow the payment info on the first post. I don't have a paypal account and using my local check cashing place will cost me about $5 to cash your bank check (casheirs checks, personal checks) So please try and keep it to Cash, USPS Postal Money Orders and WalMart Money Orders.

Thanks again guys, this is all for and because of you. I can't do it without you.

Dave

Share this post


Link to post
Share on other sites

Dave,

I'll get the MO off tomorrow. Also any info on using a bump stop would be much appreciated part numbers,step by step fully illustrated 9x12 glossy pics with little circles and arrows and stuff etc.... anybody?

Thanks for doing this for us Dave,now I can get my diff. off the bench and into the car.

Best,

H Houghton

Share this post


Link to post
Share on other sites
Dave,

I'll get the MO off tomorrow. Also any info on using a bump stop would be much appreciated part numbers,step by step fully illustrated 9x12 glossy pics with little circles and arrows and stuff etc.... anybody?

Thanks for doing this for us Dave,now I can get my diff. off the bench and into the car.

Best,

H Houghton

It's my Pleasure Mr Houghton. PM Darrel about the Bump stop specifics. Maybe we can get him to do a thread on using the bump stop with the R/T mount. Might bump sales and get the needed info out there for people looking for options.

Dave

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.