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Thread: Possible A413/31TH Billet Input Shaft Group Buy

  1. #161
    Supporting Member Turbo Mopar Contributor mopar-tech's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by boots View Post
    Definitely something has changed on donato's shaft's. I have one of his originals here compared to oem shaft.


    One on the right has lockup.


    Working on clearing the decks.

  2. #162
    Garrett booster
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    I know it is? I'm using it as a reference. The splined area is longer on his new ones

  3. #163
    Supporting Member Turbo Mopar Contributor rdnoel86's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    New one on left
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  4. #164
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    So the spline is longer, and overall the same length as a stock shaft with the nose.
    We'll need a custom torque converter anyway, so not sure if there is an issue?
    Wayne H.

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  5. #165
    Supporting Member Turbo Mopar Contributor zin's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Kind of sounds like it fixes the need to add the clips to keep it from walking? ...

    Mike
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  6. #166
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Got one last update for this thread.
    All the manufactured shafts from this group, and the extras that Donato made are all sold.
    I think that was 20 total units!

    Thanks for the interest and support to get this off the ground!


    I know we mentioned before, but are there any other parts we should consider trying to get made? It seems like he would be open to other group buy runs. I think pinion shaft was mentioned.
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
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  7. #167
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    I've never had a problem with a pinion shaft. Getting that made might be a problem because there's a couple different ones out there. That is probably the one part that is not interchangeable between the A413 and the 31TH. Where the parking pawl gear slides over the shaft, one is slightly larger than the other.

    I've broken an output shaft and twisted another. I'd like to see that get made.

  8. #168
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by A.J. View Post
    I've never had a problem with a pinion shaft. Getting that made might be a problem because there's a couple different ones out there. That is probably the one part that is not interchangeable between the A413 and the 31TH. Where the parking pawl gear slides over the shaft, one is slightly larger than the other.

    I've broken an output shaft and twisted another. I'd like to see that get made.
    Maybe that's what I meant to say.
    I guess I should look back when I have time to find what was suggested than trying to rely on my crappy memory!
    Wayne H.

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  9. #169

    Re: Possible A413/31TH Billet Input Shaft Group Buy

    output shaft!
    best 1/8 ET-6.16 sec. best 1/8 speed-119.70 Best 1/4 MPH 145.5, Best 1/4 ET 9.65 sec. 8 valve NO NITROUS!!

  10. #170
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by Warren Stramer View Post
    output shaft!
    I got it now!
    So that's at least 2 between you and AJ...
    I'll ask John about it and start a new thread.
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
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  11. #171
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by wheming View Post
    I got it now!
    So that's at least 2 between you and AJ...
    I'll ask John about it and start a new thread.
    I'll need two! I'm sure turboshelbys will be in for 1 minimum but most likely 2. So we're possibly at 5 already.

    1. A.J. (2)
    2. Warren Stramer (1)
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  12. #172
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Are the output shafts the same part number for A413 and 31TH?
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick (RIP)
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.699 @ 114.43 mph! - Oct 15th, 2022 Cecil County Dragway, MD)
    MeanMini dragracing videos: https://www.youtube.com/playlist?lis...URZLB1RxGYF6vw
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  13. #173
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by wheming View Post
    Are the output shafts the same part number for A413 and 31TH?
    I'm almost positive they are the same. When I get time I'll compare an A413 output shaft to a 31TH shaft.

    The only reason I know the pinion shafts are different is because I was building a trans for someone and the core trans I was building had a hollow pinion shaft. I told him a solid one would be better. He found one on Ebay and had it sent to me. I tried to install it and the governor base/parking pawl gear from the hollow shaft wouldn't slide over the solid shaft.

  14. #174
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    I brought my torque converter to Hughes Performance in Phoenix. $312.55 to modify my converter for the new shaft. Took them three days to do it.
    Last edited by A.J.; 12-01-2018 at 01:23 PM.

  15. #175
    Hybrid booster
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    aj, are you still using a A413 or are you now running the 31th? who's convertor are you using? stall speed etc?

  16. #176
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by onerippinturbo2 View Post
    aj, are you still using a A413 or are you now running the 31th? who's convertor are you using? stall speed etc?
    I am running the 31TH mated to a 2.4 in the van. I'm running a A413 mated to a 2.5 in my wagon. I'm going to discuss the 31TH in my van.

    The converter in the van is actually a 10.5" converter out of a 3.3/3.8 Caravan with a 41TE. I had to go 10.5" because I was blowing the lock-up out of the 9.5" converter. I was not boosting in lock-up. The converter flexes too much and would blow out the seal in it. They don't make a billet cover for the 9.5" so I had to go 10.5" I had to drill new holes in my flex plate to use the 10.5" because the bolt pattern is wider. Suncoast in Florida built my 10.5" converter and it's a 3500 stall speed. I love it. I didn't want to pay an extra $100 in round-trip shipping so I had Hughes in Phoenix modify my converter to accept the new billet inputs shafts and told them to eliminate the lock-up. I haven't installed it yet so I don't know how good of a job they did. I only know my shaft spines into it fine.

  17. #177
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by Warren Stramer View Post
    I would like to post this tip for you that purchase the 300m/904 shaft, so that you don't find out the hard way. The shaft I sourced was a Donato piece, and it did not have the 5/8 nose extension at the front of the splines that fit into the converter turbine. It is made like a late 904 shaft with a blunt nose.
    The consequence of not having that extension is that the 300m shaft will want to walk forward right out of the rear clutch drum.
    the stock snap ring will not hold it in place. I initially used one spirolock in place of the stock snap ring (on advise of David Rose), but on inspection even the spirolock was pulling off the snap ring groove.
    The final fix was to source two tightly fitting spirolocks and stack them together in the groove, and press the shaft into the rear drum with Loctite 680.....no more problems.
    the following photo shows the part number for the proper spirolocks. I sourced them straight from Rotor Clip. Hope this saves you some unneeded aggravation. The Donato input shaft is a nice part, I don't think it can be broken. I have had good luck with his high ratio kick-down lever also.
    I'm installing my input shaft but can only fit one spirolock into the groove. The groove is wide enough for two but once I press it into the drum I only have room for one. I'm using a 12 ton press so I know it's bottomed out. I did use the loctite 680 when pressing it in.

    I'm thinking it's not going to matter with these new shafts because they are the same length as the old one (compared to pictures of the last batch) so there's no place for it to push out to.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by A.J.; 12-19-2018 at 03:58 PM.

  18. #178

    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by A.J. View Post
    I'm installing my input shaft but can only fit one spirolock into the groove. The groove is wide enough for two but once I press it into the drum I only have room for one. I'm using a 12 ton press so I know it's bottomed out. I did use the loctite 680 when pressing it in.

    I'm thinking it's not going to matter with these new shafts because they are the same length as the old one (compared to pictures of the last batch) so there's no place for it to push out to.
    Don't sweat it, I was able to fit two, but was a different batch of shafts. If it is tight and with Loctite 680, one spirolock, you should be fine.
    best 1/8 ET-6.16 sec. best 1/8 speed-119.70 Best 1/4 MPH 145.5, Best 1/4 ET 9.65 sec. 8 valve NO NITROUS!!

  19. #179
    Supporting Member II Turbo Mopar Contributor A.J.'s Avatar
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Quote Originally Posted by Warren Stramer View Post
    Don't sweat it, I was able to fit two, but was a different batch of shafts. If it is tight and with Loctite 680, one spirolock, you should be fine.
    Awesome. Thanks.

    Other than that concern, the input shaft went in fine and Hughes Performance did a good job on modifying the converter. Going to dyno tune for my big plenum intake in the next week or so and then I'll be racing at Roadkill's Zip-Tie Drags in Tucson January 19th.

  20. #180
    turbo addict Turbo Mopar Contributor
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    Re: Possible A413/31TH Billet Input Shaft Group Buy

    Since you gave up the lockup, I guess your next converter could be smaller

    Were you only using it on the freeway?
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

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