Page 1 of 3

Ultimate 928 Torsional Vibration Damper

Posted: Wed Oct 14, 2020 2:52 pm
by Geza-aka-Zombo
Available now - Hub, Fasteners and Removal tool - $285 which includes Cont. US shipping. You supply the ATI Damper available from multiple sources - Installation Instructions have been updated below. PM/email me to coordinate. Thanks!

Image
Image
Image
Image
Image
Image
Image
Image

Re: Ultimate 928 Torsional Vibration Damper

Posted: Mon Oct 19, 2020 8:35 am
by Shifted
   

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Oct 25, 2020 10:07 pm
by milrad
What is the correct ATI damper to get, and do you have a good source for them?

Re: Ultimate 928 Torsional Vibration Damper

Posted: Mon Oct 26, 2020 10:13 am
by Geza-aka-Zombo
milrad wrote: Sun Oct 25, 2020 10:07 pm What is the correct ATI damper to get, and do you have a good source for them?
I used TVD shell ATI917020 on my engine - it is available from multiple sources. I got my original from JEGS, and just got a second one (for test fitting the production hub) from Summit Racing.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Fri Oct 30, 2020 9:23 pm
by Mrmerlin
Hi Geza I think Im gonna get two of these

Re: Ultimate 928 Torsional Vibration Damper

Posted: Mon Nov 02, 2020 1:01 pm
by Geza-aka-Zombo
Recently met with the machine shop - hub fabrication scheduled to be complete in 2 weeks, then out for anodizing, which will be another week or so.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Nov 03, 2020 12:22 am
by milrad
Thanks for the update!

Re: Ultimate 928 Torsional Vibration Damper

Posted: Fri Nov 20, 2020 10:41 am
by Geza-aka-Zombo
Progress - metal being cut and removal tool parts in.
Image
Image

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Nov 22, 2020 8:02 pm
by milrad
Great! My motor reassembly is coming along so I’ll be needing to get the damper put back on in a few weeks :jumper:

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Dec 15, 2020 11:26 pm
by milrad
Curious, how are things coming along?

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Dec 16, 2020 6:51 am
by Geza-aka-Zombo
Sorry for the delay, but the shop had a China Virus case, which slowed things down.

I'm scheduled to pick up the completed parts this morning - hoping to get it done before the pending snow storm here in NJ. I'll post pictures, pack them into the nice little boxes I bought, and start contacting the interested parties. One was delivered to a customer about 10 days ago (emergency need - he took the part unfinished, without anodize, shipped directly from the shop - I never even saw the part). Everything went well, but it didn't go on all the way before it cooled (he worked around it), so, I posted revised installation instructions raising the soaking temp a bit from 250F to 275F. Stay tuned....

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Dec 16, 2020 7:25 am
by Shifted
   

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Dec 16, 2020 7:58 am
by Geza-aka-Zombo
Good points - I'll leave it up to folks as to whether they want the kit right away or after the holidays.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Dec 16, 2020 4:01 pm
by Geza-aka-Zombo
"The Eagle has Landed". I updated first post with the latest pictures and information.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Dec 16, 2020 8:33 pm
by worf
I’ll take two. Bump this thread after The Crazy Days and I’ll order them for inventory; No immediate need right now.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Thu Dec 17, 2020 10:38 am
by milrad
PM sent with shipping address.

Thanks!

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Dec 20, 2020 1:53 pm
by Geza-aka-Zombo
In case the hub cools down too much before fully seated against the timing belt guide, I revised the instructions (added STEP 3A) to show how you can use the removal tool parts and crank bolt to drive the hub into its final position. I will include the extra washer (shown in STEP 3A picture under the crank bolt head) with the kit. Merry Christmas!

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Dec 27, 2020 11:13 am
by Geza-aka-Zombo
I'm heading out tomorrow to ship some of these hubs - if you are interested in getting yours with this "dump", PM me your shipping address and qty, and I'll add yours. I'll PM you with payment info. Thanks!

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Dec 27, 2020 12:43 pm
by Shifted
   

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Jan 03, 2021 9:37 am
by Geza-aka-Zombo

Re: Ultimate 928 Torsional Vibration Damper

Posted: Mon Jan 04, 2021 5:32 pm
by Majestic Moose
Thanks for the heads up. I have one on order.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Jan 05, 2021 12:24 am
by Stepson
Geza,
I would like 2 please. I will PM you my shipping address.

Thank you

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Jan 27, 2021 6:28 pm
by Geza-aka-Zombo
So, I've shipped out 16 of these to date. Has anyone installed one yet? Any feedback? Much appreciated.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Jan 27, 2021 7:12 pm
by Shifted
   

Re: Ultimate 928 Torsional Vibration Damper

Posted: Thu Jan 28, 2021 9:21 am
by Majestic Moose
I have got three cars that need my attention before I get to the 928 but I will let you know. It is a nice piece of kit.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Thu Jan 28, 2021 11:27 pm
by Stepson
Geza, I will be installing one of mine this weekend. I will give you a full accounting of the process.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Mon Feb 01, 2021 12:25 pm
by Stepson
Life got in the way of installing the harmonic balancer this weekend. I did get closer to it, just couldn't make it happen yet. I should be stringing Timing belt tonight, so maybe tomorrow night.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Feb 03, 2021 8:44 pm
by milrad
Mine is on the shelf, ready to go in. Would love to know any tips you discover along the way...

Re: Ultimate 928 Torsional Vibration Damper

Posted: Fri Feb 05, 2021 12:12 pm
by Stepson
I now have everything installed prior to the HB. I will make it happen this weekend. (if the sun shines and the creek don't rise)

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Feb 07, 2021 12:10 am
by Stepson
I installed the hub and the new Harmonic balancer last night. I had trepidations about this whole process prior to beginning the installation process. These fears were unfounded. I was afraid that I would get the securing bolts in the wrong holes. I didn't. I was fearful that I would end up with the hub halfway on and get stalled there. It didn't. The entire process, although somewhat lengthy, was smooth and everything fit well. The hub slid right on like it was made to fit there. :)

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Feb 07, 2021 6:59 am
by Geza-aka-Zombo
@Stepson
Glad it worked out for you. Did you use the removal rods as a handle? If so, did you add them before or after you heated the hub? Any suggestions on improving the instructions? Thanks

Re: Ultimate 928 Torsional Vibration Damper

Posted: Mon Feb 08, 2021 12:49 am
by Stepson
Yes, I installed the removal rods prior to putting the whole lot into the oven. Put a piece of foil down on a cookie sheet and put the whole mess into the oven. When it was time, I removed the cookie sheet and loosely wrapped the foil around the hub to conserve heat. Used good oven mitts to handle the removal rods and the hub and place it onto the crank snout. Once aligned, it slid right on. I let it cool a bit and unscrewed the removal rods.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Mar 20, 2021 10:44 am
by Geza-aka-Zombo
Looks like the TVD price is moving up some - still good though.

I have 12 hub kits left (18 sold) - no real plan to make any more, as I never did this to make a business out of it.

https://www.summitracing.com/parts/ati- ... 1043cbe9e0
Image

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Mar 20, 2021 1:17 pm
by Daniel5691
Howdy !

My original issued HB is positively toasted, 1981 Euro S,

I know you've got better things to do with your time, but could you maybe give some of us
"simple-minded" hobbyists a quick tour of this replacement part?

I'm not all all interested in maintaining some type of show car- concourse aspects of restoring my 928, instead I want to finally get it running and on the road, so usability and reliability are my goals...

Any details you may please be able to offer would be great. I did read a little about your project over on RL but that thread got bogged down in other things if I recall.
Anyway, thanks, have a great day,
Dan


Never mind brother I just found your other thread here which gives TONS of info. Thanks.
https://openroad.site/viewtopic.php?f=25&t=868

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Mar 20, 2021 6:52 pm
by Stepson
Geza,

Summit Racing matched the JEGS published price that you posted when I bought mine. Just a FYI.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Mar 20, 2021 8:17 pm
by maddog2020
Stepson wrote: Sat Mar 20, 2021 6:52 pm Geza,

Summit Racing matched the JEGS published price that you posted when I bought mine. Just a FYI.
It also helps that summit is 15 minutes from Johns house....

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Mar 20, 2021 11:05 pm
by Stepson
Well, YEAH!!!!!

I knew that I sure as hell wasn't going to drive to JEGS (wherever the heck they are) when Summit is in my backyard.
But I also knew that Summit would price match JEGS because they wouldn't be able to stand losing a sale to JEGS. :)

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Jun 15, 2021 12:52 pm
by jschiller
Geza-aka-Zombo wrote: Sat Mar 20, 2021 10:44 am

I have 12 hub kits left (18 sold) - no real plan to make any more, as I never did this to make a business out of it.
Geza, are these all gone?

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Jun 15, 2021 2:09 pm
by Stepson
I installed the new hub and dampener on my GTS and drove to SITM and home. @2400 mile in all. I can't say that the engine has ever run smoother than it did for this trip.

Great job Geza! And thank you!

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Jun 15, 2021 2:45 pm
by Geza-aka-Zombo
jschiller wrote: Tue Jun 15, 2021 12:52 pm
Geza-aka-Zombo wrote: Sat Mar 20, 2021 10:44 am

I have 12 hub kits left (18 sold) - no real plan to make any more, as I never did this to make a business out of it.
Geza, are these all gone?
No, I still have some left - if interested, PM me your email and we'll communicate that way. Thanks.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Jun 19, 2021 4:34 pm
by PorKen
Ordered the shell off of eBay. Hopefully, the correct piece arrives!

$240 w/free ship (1 left as of this post)

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sat Jun 19, 2021 7:35 pm
by jschiller
PorKen wrote: Sat Jun 19, 2021 4:34 pm Ordered the shell off of eBay. Hopefully, the correct piece arrives!

$240 w/free ship (1 left as of this post)
Thanks for posting this. I had an order in with Summit that was back ordered. This is a better deal. I must have missed it when I was looking last week. :banghead:

Re: Ultimate 928 Torsional Vibration Damper

Posted: Tue Jun 29, 2021 10:51 pm
by PorKen
Just by chance, both the adapter and damper arrived today!

Pile is growing for (because: supercharger) big TB job on this '89

89_black_gears_damper.jpg

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Jun 30, 2021 12:28 pm
by worf
PorKen wrote: Tue Jun 29, 2021 10:51 pm Just by chance, both the adapter and damper arrived today!
If the fasteners are the same as the others, beware: Torx Plus bits, not plain Torx.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Jun 30, 2021 12:43 pm
by Geza-aka-Zombo
Image

I bought a whole set online.

I thought about including the 2 bits with the kit, but it would have added another ~$15 as I recall.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Jun 30, 2021 12:53 pm
by worf
Geza-aka-Zombo wrote: Wed Jun 30, 2021 12:43 pm I thought about including the 2 bits with the kit, but it would have added another ~$15 as I recall.
Yeah. And those fuckers aren’t easy to find. No ‘quality’ manufacturer (e.g. Hazet, Stahlwille, etc) makes them that I’ve found yet.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Wed Jun 30, 2021 2:12 pm
by PorKen
More stuff to the pile! TP40 and TP45 ordered.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Sun Jul 04, 2021 1:26 pm
by milrad
worf wrote: Wed Jun 30, 2021 12:53 pm
Geza-aka-Zombo wrote: Wed Jun 30, 2021 12:43 pm I thought about including the 2 bits with the kit, but it would have added another ~$15 as I recall.
Yeah. And those fuckers aren’t easy to find. No ‘quality’ manufacturer (e.g. Hazet, Stahlwille, etc) makes them that I’ve found yet.
Agreed, none to be found amongst Stahlwille or Hazet (my preferred), and Wiha only goes to TP40. Snap-On makes a set, but they are STUPID expensive. However, I found an SK set on Amazon and just ordered it. US made. I like SK stuff, always good in my experience.

Re: Ultimate 928 Torsional Vibration Damper

Posted: Fri Jul 09, 2021 9:06 am
by Geza-aka-Zombo
****ATTENTION - NEW INFO REGARDING SUPERCHARGER INSTALLATIONS****

Jason @milrad just identified a potential problem with the installation of his supercharger hub and the Ultimate 928 TVD Hub. The hub was designed to work with the OEM pully set; if you wish to use it with a non-OEM pulley set (like a supercharger) please contact me so I can review the installation. Posting a picture of the side of the pulley which mates to the TVD would be very helpful. Thanks!

Re: Ultimate 928 Torsional Vibration Damper

Posted: Fri Jul 09, 2021 10:11 am
by milrad
First of all, I want to make clear that I installed Geza's hub per his excellent instructions and it went on perfectly. It's really slick and well designed.

This issue is due to my ignorance on the pulley differences. I bought this car with the SC already installed, and it never dawned on me that the back side of the first pulley might be different than a stock pulley. Makes no difference with the stock damper, but it does with this upgraded damper hub.

Back of the supercharger pulley:

Image