TRNW-2: 10R80 pump bolts

[pat schulte]

The bolts that come in the Ford kits are steel, 8mm, 8.8 bolts. I
torque them to 15 ft lbs, just like any other 8mm bolt. I find it hard to
believe they are TTY bolts, but you guys may know more, I have never
bothered to look up the torque specs.

On Fri, Feb 14, 2025 at 3:02 PM Steve Everett via trnw2 <trnw2 at trnw.net>
wrote:

>   Thanks Randy !   good o know ,  oddly enough the seals on the Ford bolts
> remain in good shape after removing them , unlike the aftermarket ones
> where the sealer is flattened and destroyed after initial tightening,
>  I'll play close attention to the condition of the seals, but I intend on
> reusing the bolts, unless I can get new ones from Ford,  I do not like or
> trust the aftermarket ones
>
>   Steve
>
> On Fri, Feb 14, 2025 at 5:32 PM Randolph Wilson via trnw2 <trnw2 at trnw.net>
> wrote:
>
>> There are many reasons a manufacturer will call for new bolts.  Most
>> common is because of a special coating on the bolts. The coating can be a
>> sealer, a locking agent, or an anti-corrosion lubricant (think magnesium
>> cases). They can also be torque to yield. The one thing about TTY is they
>> will always be protractor torqued. Not all protractor torqued bolts are
>> TTY, but TTY will always be protractor torqued.
>>
>>
>>
>> In this case Ford calls for replacing them because of the sealer.
>>
>>
>>
>>
>>
>> <http://www.transgo.com/>
>>
>> *Randy Wilson*
>>
>> *Technical Support Specialist*
>>
>> 2621 Merced Avenue El Monte, CA 91733 USA
>> Office: 626.443-7451
>>
>> *Calibration | Innovation |Performance*
>>
>> <https://www.facebook.com/TransGo-600961476956220> [image:
>> 1475592640337_I] <https://www.instagram.com/transgoshiftkit> [image:
>> 1475592655171_t] <https://twitter.com/transgoshiftkit> [image:
>> 1475592664972_Y]
>> <https://www.youtube.com/channel/UCg6v9MzFmq7g3fy7-r9PGIg> [image:
>> 1475592672363_L] <https://www.linkedin.com/company/transgo1/>
>>
>>
>>
>>
>>
>> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> *On Behalf Of *Dan
>> Hogan via trnw2
>> *Sent:* Friday, February 14, 2025 1:11 PM
>> *To:* Technical Discussion Forum <trnw2 at trnw.net>
>> *Subject:* Re: TRNW-2: 10R80 pump bolts
>>
>>
>>
>> Steve,
>>
>>
>>
>> These factory pump bolts appear to be TTY (torque to yield) and are one
>> and done.  I suspect if you decided to re-use, using the factory torque
>> spec likely will be too low as the bolts stretch once and deform.
>>
>>
>>
>> I know the transfer case to transmission bolts are definitely TTY and the
>> factory torque spec is very low.  I don't think shops are replacing as
>> needed, but it's likely a bad idea.  There's nine of them so guess they
>> cross their fingers, pray and blame later.
>>
>>
>>
>> I wish makes would not use these type fasteners as it only introducing
>> errors and mistakes in the aftermarket to already expensive and costly
>> work.  Blame the eurotrash as they started this mess with TTY on likely
>> unnecessary areas of vehicles.  Cheaper i guess.
>>
>>
>>
>> ---
>>
>>
>>
>> Dan Hogan
>>
>> Buster's Transmission Service
>>
>> https://busterstransmission.com
>>
>> 704.847.5321
>> ------------------------------
>>
>> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of
>> Steve Everett via trnw2 <trnw2 at trnw.net>
>> *Sent:* Friday, February 14, 2025 10:55 AM
>> *To:* Technical Discussion Forum <trnw2 at trnw.net>
>> *Subject:* TRNW-2: 10R80 pump bolts
>>
>>
>>
>> anyone had any issues with reusing the factory 10R80 pump bolts ?  I've
>> reused them on a couple units with no problems, I've tried using the ones
>> that come in Precision kits, but their seal is nothing but silicone, which
>> smashes and destroys itself after initial tightening ,  looks cheesy to me,
>> I trust the factory bolts over them,  as long as you don't over torque
>> them
>>
>>
>>
>>   Steve
>> This message was sent from the TRNW Technical Discussion Forum (trnw2).
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>>
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> TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355



-- 
Pat Schulte
AAMCO Transmissions
Temecula, Ca.
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