Re: [Chrysler300] Suggestied topic Club webpages? - Dexron vs. type F and the real issue which is that LETTER CAR transmissions are different and are high performance

[Hi Tech Auto Parts <htap@xxxxxxxxxxxx>]

Yes , I agree with Chris and his comments,I think this would be very a 
useful tool if its possible to put this in the club site somewhere,like most 
of us the question/answer forum is both interesting and imformative,how ever 
at the time of reading it may not be relevent to you  and when it is most of 
us have forgotton.So this would save doubling up on imformation and also 
gives access to a quick result to a query if it is on hand in the 300 
archives.
                Geoff.Matthews..NZ
----- Original Message ----- 
From: "christopher beilby" <thelastbestgenius@xxxxxxxxxxx>
To: <cbilter@xxxxxxxxx>; <chrysler300@xxxxxxxxxxxxxxx>
Sent: Friday, May 18, 2012 12:17 AM
Subject: [Chrysler300] Suggestied topic Club webpages? - Dexron vs. type F 
and the real issue which is that LETTER CAR transmissions are different and 
are high performance


>
> Some 300 topics/questions seem to come up more than once, and any final 
> decision/choice/help taken is solely in the domain of the person who asked 
> the question, or raised the topic.
> People like me and others take time to reply - some appreciate it, others 
> just maybe say move on, something new please?! Whatever.
>
> Can I suggest that topics that seem to come round pretty regular, be put 
> on the Club Website pages somewhere, topics I think of as good ones to 
> consider would be:
> (1) Suggested best type trans Fluid for 300's Torqueflights
> (ii) Petronix Installation on 300s -likely things you might encounter/fix 
> in doing so
> (iii) Why old flat cam 300s should maybe use oils that still contain zinc 
> etc versus modern oils designed for modern (roller cam) engines that now 
> omit that which protects flat tappet 300 cam lobes better.
> (iv) Diff oils for limited slip type 300 rear ends
> (v) Current Radial tire sizes (in inches overall height) versus old 
> original cross ply 300 issue tire sizes
> (vi)  sample rear brake drum pullers to use on early rear taper axle 300s
>
> Then when a Member comes up with a query that involves a topic already on 
> the Club Website, then it only takes one simple post/reply, to point the 
> questioner to a first possible answer. And I think that thought has 
> already started re some topics, such as disc brakes for 300s?!
>
> Who contributes to what put on the Club Site re any topic I leave to 
> others, but for example the excellent advice/comment offered by George 
> Rhiel on the email posted below would be an excellent start re Trans fluid 
> topic, especially if a footnote added, that the main possible problem with 
> using (early) Dexrons, is the clutches in the (300) trans can slip too 
> long/much on hard shifts, causing the friction material on the plates to 
> wear off prematurely, then the resultant 'metal to metal' clutch faces 
> cause trans to fail and need a rebuild.
>
> Petronix has recently been covered very excellently, and there should be 
> one or two good replies/posts, that could be used 100% as is, if the 
> writers agree. Same with tire size topic, etc , etc??
>
> And if anyone in the future feels they need know a more definitive answer 
> on another possible topic, 'ethanol fuels in 300s, the pros and cons??! - 
> especially re possible harmful higher combustion temperatures' - would be 
> great help to me, if no one else??
>
> Leave it with you - and rather than turn this into another 2-20 day site 
> topic, how about if someone wants to volunteer to submit/organise suitable 
> copy/detail to 'whomever' those 'better in the know' thinks could help set 
> something up, if it felt not too hard to do? But that just an opinion.
>
> Christopher in Australia
>
>
>
> To: Chrysler300@xxxxxxxxxxxxxxx
> From: cbilter@xxxxxxxxx
> Date: Wed, 16 May 2012 23:40:55 -0500
> Subject: [Chrysler300] Dexron vs. type F and the real issue which is that 
> LETTER CAR transmissions are different and are high performance
>
>
>
>
>
> Greetings-
>
> Yes, this subject is getting tired, but instead of deleting or moaning you
> may actually want to read this as this relates to letter cars which, after
> all, is the real reason for the listserver, and it wasn't clear to me that
> the latest thread actually ever got focused on letter cars.
>
> I am no transmission expert, but George Riehl is (or was) and he wrote an
> excellent article for the NewsFlite about 10 or 15 years ago on letter car
> transmissions.
>
> For those newer to the club, here is what George had to say about letter 
> car
> transmissions:
>
> 1) "There were many internal differences for the 300 (letter car)
> transmissions and it gets very involved. Front and rear clutch packs have
> more friction discs. Front cushion spring is eliminated, kick down lever 
> is
> of a different ratio, rear clutch spring is different, accumulator spring 
> is
> eliminated, line pressures are higher, clutch pack clearances are closer,
> band adjustments are tighter and governor weights and springs are
> different."
>
> 2) "The fluid to use in these transmissions (letter cars) is type F or
> FA. I prefer type F when available. Type "A" suffix "A" should not be used
> and is fortunately not readily available. Do not use Mercon or Dexron, as
> they will result in early transmission failure. Chrysler put out a special
> tech bulletin to technicians to use Type F, even in the A833 4-speed
> transmissions."
>
> It would be interesting if someone could dig up that tech bulletin and see
> exactly when it was issued and to what transmissions it applies to.
>
> Of note, after Dexron was introduced Chrysler began using it as the 
> factory
> transmission fill for both TorqueFlite and the A-833 4-speed. From the 
> 1975
> chassis service manual, page 0-27: "Use only fluids of the type labeled
> DEXRON Automatic Transmission Fluid such as MOPAR DEXRON Automatic
> Transmission Fluid, Part Number 3549660, or equivalent."
>
> Of course, this was long after letter cars and their modified high
> performance transmissions. I assume, therefore, the real need for type F 
> is
> both for firm shifts and the so the modified higher performance letter car
> transmissions do not fail prematurely.
>
> Carl Bilter
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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