Hi guys so i was just cruising around club na-t and this could very easily be TOTAL BS i have no fact behind this i just read it and there was no response on there and in general there seems to be alot less misinformation here so i thought i would just throw the question out there and see what came of it. I read that the pontiac solstice has a r154 ranny...i dont see how this could be possible because i thought the solstice was a 6 speed maybe that is just the gxp. but the next question would be does anyone have access to one to look and see if it would/could ever bolt up to a 2jz/1jz but like i said someone else said this and im just looking for another option for a stronger tranny i think its bs but if it was true that would be really cool.

please no flaming just yes's and no's and constructive critisism

 

I actually found this through wiki as well... it also crossed my mind although it did sound somewhat absurd in my head.

 

pontiac vibe has a toyota powerplant.... who knows maybe this is true for the solstice as well.

 

ok well i just did a quick google search because this is bugging me and i found this on a solstice forum from a member with a name "1jz-jza70" so he could have some idea what hes saying
"The last comment on this topic was, 12-20-2006. Sorry for bringing it back. Someone said earlier that the R154 transmission would be a better suite for the Solstice. What is funny is that people in the Supra world (including me) are considering using the Solstice transmission instead of the R154 because of syncro issues, thrust washer issues, smashed bearing and clunkyness. Someone has already mated your OEM Solstice transmission to Supra motor with relative ease because of the transmission being nearly alike. I do not agree with the comment made earlier, and furthermore the OEM Solstice transmission has been handling abuse from LSx motor's with the Mallet Performance upgrade. It is torque that kills a transmission, not the horsepower. It also has already been proven that the OEM Solstice transmission has a re-designed syncro setup in comparison to our Supra R154 transmission. Notice how your OEM Solstice tranny's shift like a Civic? In closing, the Supra R154 transmission would be another option for the Solstice, but I doubt you will like the results. In any case, that is my .02 cents."

 

and i just hit wikipedia and did a search for toyota r154 and that said is is used in the solstice....now all we need is someone to take a look and see if it could possibly bolt to any 1/2jz bell housing and if it has a longer shifter and if the driveshafts bolt up....long shot but if anyone has connections and could check that would be awsome

*edit* i supose there is also a small possibility that the GXP LSD could drop in but that is an ever bigger long shot

*edit* i just read that the rear end and axel assembly is from a cadilac cts....so im pretty sure the LSD question would be a big gapping NO

 

http://www.supramania.com/forums/sho...=25024&page=17

very interesting information there....looks like it could be done there is some mismatched facts....but biggest suprise is someone actually brought us the idea of throwing it in an sc and he said that the shifter would be to far back...but he measured a supra r154 which i have read is about 3 inches shorter than a soarer r154. now there could be a possibility of bolting the w58 or supra r154 on to the solctice tranny and at least getting close obviously there would be obstical but there could be a possibility...anyone with money and time and knowlage i bet could make it work...

also that forum said that the chevy colorado had the same tranny only shorter....if its anywhere near 4 inches shorter it might bolt straight up but who knows im prolly just talking out of my a$$ here so ill shut up and go to bed i only got 3 hours of sleep last night

 

i've also read this information before but haven't seen anyone confirm it yet. still waiting...

 

it is an r15x box and so are the 4.0L jeep wrangler 5 speeds. Same case just different input/output shafts and different gearing. Offroaders have been building the r154 for years and have been able to engineer fixes for almost all of the problems of the trans. It will still be much cheaper to modify the mk3 r154 than to pick up a new AR5 out of the solstice.

 

yea i realize it is highly unfeasable but it would be really cool to see done.

 

It'd also be cool to throw a V160 in there. But the cost is high and you can accomplish the same with a normal R154.

Have you had any problems with your R154 yet?.. Like vipsoarer said, it would be cheaper and more practical to upgrade the stock r154 to make it stronger (cryo the gears/forks, etc)..

 

How much would a new one run? I'd think that being it's a new-ish car that transmissions for them would be really pricey.

 

my buddy has a mk3 supra with 1jz and gt35. he goes to school in florida and he picked one up in dayton beach for like 1400 bucks brand new from the dealer. its was a steal. he will be putting it in this winter break so ill keep you posted. i just talked to him and the output yoke is different. to make it work you have to use a chevy s10 yoke and put it on the stock driveshaft or get a custom one made. the trans bolts up directly to the 1jz bellhousing and the only difference is shifter position. and that is not hard to modify either way. i might be getting his old r154 out of the deal

 

yea in that thread i posted one of the guys said he got quoted 1300 for a omplete brand new tranny straight from pontiac....so if this could work it may be about the same price as a r154 after the extra bits and pieces needed

 

hey guys any more updates on this???
I need to upgrade soon,
I'm moving up from a Te04 to a T61 and I don't think my W58 is going to like that :P


BTW, (from pontiac's website) the Solstice HP/tq
SAE Net Torque @ RPM 167 @ 4500 260 @ 5300

and the GXP HP/tq
SAE Net Horsepower @ RPM 173 @ 5800 260 @ 5300


doesn't really seem like much
are the internals the same as the MK3 R154???

 

I did more digging here's are the gear ratios
(AR5 is the factory name for the Solstice r154)

AR5 - 3.753 2.26 1.37 1.00 0.729
R154 - 3.25 1.95 1.30 1.00 0.75


looks to me 1st and 2nd will go by super quick