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-   -   TKX Retainer OD? (http://www.clubcobra.com/forums/superformance/147116-tkx-retainer-od.html)

Davidless 07-31-2023 07:28 AM
TKX Retainer OD?
 
Hi All,
Can anyone give me the retainer outside diameter on a TKX? I need to see what size reducer bushing to use on my QuickTime bell housing. One gentleman on here said he used the silver one. Just want to verify for sure before I locktite it in place to indicate.
I called Holley and they couldn’t find anything listed on the internet either, not sure why it’s such a big secrete, lol

Thanks
David

blykins 07-31-2023 07:34 AM
Just slip it over the trans first....

I have never Loctited one of those in and I would make it so that you can get it out easily because there's a chance you'll have to remove it to dress the powdercoat in that bore.

Davidless 07-31-2023 10:34 AM
Quote:
Originally Posted by blykins (Post 1518959)
Just slip it over the trans first....

I have never Loctited one of those in and I would make it so that you can get it out easily because there's a chance you'll have to remove it to dress the powdercoat in that bore.
That’s my problem I don’t have the trans yet, the bushing is not a press fit so I need to hold it from moving while I rotate my indicator
The BH bore is free from any powder coat.

blykins 07-31-2023 10:48 AM
If the adapter ring just falls in, it's not right. It shouldn't be a press fit either, but should be a slight interference fit.

Davidless 07-31-2023 01:37 PM
Quote:
Originally Posted by blykins (Post 1518969)
If the adapter ring just falls in, it's not right. It shouldn't be a press fit either, but should be a slight interference fit.
Hmm wowe is me

kitcarbp 07-31-2023 09:25 PM
David, so I checked and it seems tremec still uses the same input shaft bearing retainer on tko and tkx input shafts. The retainer od you are looking for I assume is this one ?

https://ad4062394301f5213879-385273f...3_af80b75e.jpg


I used a McLeod choke ring ( some call it reducer ring) to allow my Ford OeM bell housing to work with the tko.

I have the tko retainer in my shop and can measure it and report back.

Davidless 08-01-2023 01:03 PM
Quote:
Originally Posted by kitcarbp (Post 1518975)
David, so I checked and it seems tremec still uses the same input shaft bearing retainer on tko and tkx input shafts. The retainer od you are looking for I assume is this one ?

https://ad4062394301f5213879-385273f...3_af80b75e.jpg


I used a McLeod choke ring ( some call it reducer ring) to allow my Ford OeM bell housing to work with the tko.

I have the tko retainer in my shop and can measure it and report back.
Yes that would be great, there is no OD listed for that retainer anywhere!

Thanks

kitcarbp 08-01-2023 05:34 PM
1 Attachment(s)
Ok so for the 429 BB Ford bell housings, my Tremec TKO ( and the TKX) input shaft bearing retainer OD looks to be 4.8500 nominal. I’ve seen the same size quoted for the big block Top loader input shaft trans so it makes sense.
Back during my build when I realized I needed a choke ring I didn’t think I could find one so I drew one up and was ready to have a buddy CNC it, but common sense prevailed, and I called McLeod , they said yup , we have the one you need!

Here is the pic with caliper on it measuring 4.8480. blykins is exactly right, it’s a small interference fit nice and snug. I custom made washers used beneath the 4 mounting bolts to hold the choke ring in place. I could have glued it in with lock-tite but didn’t. My setup has a McLeod bolt on HTOB and thus I removed the Tremec bearing retainer which was handy for answering your question

Davidless 08-01-2023 07:10 PM
Quote:
Originally Posted by kitcarbp (Post 1518998)
Ok so for the 429 BB Ford bell housings, my Tremec TKO ( and the TKX) input shaft bearing retainer OD looks to be 4.8500 nominal. I’ve seen the same size quoted for the big block Top loader input shaft trans so it makes sense.
Back during my build when I realized I needed a choke ring I didn’t think I could find one so I drew one up and was ready to have a buddy CNC it, but common sense prevailed, and I called McLeod , they said yup , we have the one you need!

Here is the pic with caliper on it measuring 4.8480. blykins is exactly right, it’s a small interference fit nice and snug. I custom made washers used beneath the 4 mounting bolts to hold the choke ring in place. I could have glued it in with lock-tite but didn’t. My setup has a McLeod bolt on HTOB and thus I removed the Tremec bearing retainer which was handy for answering your question
Awesome!!! thank you very much. It will be the silver ring that Quicktime supplies.
That crazy diameter isn't listed anywhere on the internet, :-(
Now I'm waiting to hear back from the Holley tech gurus for the type of fit the ring should have with my BH opening.

David

blykins 08-02-2023 11:09 AM
You don't have to wait on them, it needs to be an interference fit. Otherwise, there's no use in dialing in a bellhousing. If it's a slip fit/sloppy fit, your trans is not going to be on the centerline each and every time.

Davidless 08-02-2023 03:17 PM
Quote:
Originally Posted by blykins (Post 1519021)
You don't have to wait on them, it needs to be an interference fit. Otherwise, there's no use in dialing in a bellhousing. If it's a slip fit/sloppy fit, your trans is not going to be on the centerline each and every time.
That's what I said to the tech over there, I also asked what the BH bore tolerance was, he claims +/- 0.015" I laughed, what's the sense of indicating the bell housing then.

Maybe I shouldn't have scraped of the powder coating on the inside of the bore off. That would have given me a closer fit.

I don't think it is good to have the mating surfaces powder coated, seems like it could cause some R/O problems if the thickness isn't exactly uniform.

I'm beginning to feel I should have spent my money on a different brand, but they were highly recommended one here.


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