ST185 transmission swap into ST165?

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Postby d1alltrac » Wed Mar 04, 2009 8:04 am

The ST165 final drive is 4.285. There are plenty of sources other than hyper rev that show it as such.
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Postby RedCelicaTRD » Wed Mar 04, 2009 4:35 pm

wound3S wrote:If I have the choice between believing my tachometer as well as dozens of MR2 owners or Hyper Rev, it's not a hard choice.


Or you could look it up in the Toyota parts catalog. Notice the st165 part numbers are not the same as the 3.9 final drive part numbers you posted. Unfortunitly the same bad info has been pasted around quite a bit.

st165 Shaft, Output_______ 33321-20110
st165 Gear, Ring_________41221-20240
st165 Gear, Oil Pump____ 33407-20011

And as for the reason why your MR2 and Celica has such different cruise speeds, I couldn't tell ya. I know your car has had some work done to it and it is always possible you somehow got a RC/EDM tranny in there with the 3.9 final.
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Postby wound3S » Wed Mar 04, 2009 9:36 pm

Wow, well I am gonna have to eat my words guys.

I had double checked the part numbers on toyodiy.com, but didn't notice that it directly my query with my earlier quoted number to the ST165 final drive which has a different part number.

I did some searching and found that the RC/CS ring gear has the same part number as US-market five-speed V6 Camry/Solara models. That is why many MR2 owners have been able to order the part directly from the dealership.

Additionally, it would appear that the "JDM" motor that the PO installed in the car that I bought was actually from europe. Good to know. Thanks for setting me straight :)
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Postby RedCelicaTRD » Wed Mar 04, 2009 10:23 pm

wound3S wrote: Good to know. Thanks for setting me straight :)


Everyone can make mistakes when you hear the same bad info over and over again. Now you can help get the MR2 guys on track :wink:
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Re:

Postby furiousgeorge » Thu Feb 18, 2010 3:51 am

its kinda funny to see the guy I got my celica from in the thread im looking at to swap a new tranny into said celica :p

Anyways, great thread, and I have a line on a st185 tranny that doesn't have any issues, so thanks for the info!
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Re: ST185 transmission swap into ST165?

Postby Awesome-Trac » Wed Mar 07, 2012 6:44 pm

I'm about to be doing this soon and was reading up on this thread, so is the speedo cable and one of the tranny mounts all I need to worry about?
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Re: ST185 transmission swap into ST165?

Postby 94 MR2 Turbo » Fri Aug 10, 2012 6:34 pm

When installing a 185 trans in a 165 will you need to swap the rear diff? Will final drive affect it?
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