MPH at 3,000rpm in all gears in a Probe/ 626 transmission?

[fowljesse]

I would like to know this, so I can compare it to the GS. I'm sure others would be interested in this, too.
If you wouldn'd mind holding it at 4,000 in each gear , and taking note, it may be more accurate.
Thanks

[Ryan]

Go onto those websites, take those gear ratios, find their stock tire size, and do the math

here, pick your engine/tranny.

http://homepage.ntlworld.com/mx6-uk/mai ... #transspec" onclick="window.open(this.href);return false;

[wytbishop]

Jesse doesn't do math.

Go HERE, click on Miscellaneous then calculators then gear speed calculator. Use the MX-6 ratios int he link that Ryan posted.

[fowljesse]

As soon as I read Ryan's post I was thinking what you wrote!
I'll get around to it..
Thanks, guys

[Yoda]

Here's some numbers from a spreadsheet I created when I started working on my "Frankenstein" tranny project a few years ago just changed the rpm to the once you specified. All calculations were made with a tire diameter of 23.7"

MX-3 4.388:1 final drive
@3000 rpm
1st/3.307/14.58; 2nd/1.833/26.31; 3rd/1.31/36.81; 4th/1.03/46.82; 5th/0.795/60.66 MPH
@4000 rpm
1st/3.307/19.44; 2nd/1.833/34.91; 3rd/1.31/49.08; 4th/1.03/62.43; 5th/0.795/80.88 MPH

626/ MX6 4.11:1 final drive
@3000 rpm
1st/3.307/15.57; 2nd/1.833/28.09; 3rd/1.31/39.30; 4th/1.03/49.99; 5th/0.795/64.76 MPH
@4000 rpm
1st/3.307/20.76; 2nd/1.833/37.45; 3rd/1.31/52.40; 4th/1.03/66.65; 5th/0.795/86.35 MPH

"Frankenstein" G25M-R 3.409:1 final drive
@3000 rpm
1st/3.666/16.93; 2nd/1.842/33.70; 3rd/1.31/47.38; 4th/1.03/65.55; 5th/0.795/91.28 MPH
@4000 rpm
1st/3.666/22.58; 2nd/1.842/44.93; 3rd/1.31/63.18; 4th/1.03/87.40; 5th/0.795/121.71 MPH

[Mnemonic]

probe and mx-3 trannys are the same so...

[Mooneggs]

"Frankenstein" G25M-R 3.409:1 final drive
@3000 rpm
1st/3.666/16.93; 2nd/1.842/33.70; 3rd/1.31/47.38; 4th/1.03/65.55; 5th/0.795/91.28 MPH
@4000 rpm
1st/3.666/22.58; 2nd/1.842/44.93; 3rd/1.31/63.18; 4th/1.03/87.40; 5th/0.795/121.71 MPH

HOLY CRAP - 91.28 mph at 3k rpms?!

based on these calculations that's almost like having a 6th gear LOL!
out of curiousity, any estimate at the top speed capability with that tranny at say 7500 rpm??

[onlytrueromeo]

Hot damn....thats amazing. 4th gear on the highway in that thing is still better than 5th for the mx3 tranny!!! Wouldnt that mean significantly slower acceleration though? I would think it dropped you out of your powerband.

[wytbishop]

probe and mx-3 trannys are the same so...

Actually, I have learned something from the iMazda guys. Only late model PGTs have the 4.39 final drive. That is why they were able to put the MSP LSD into a 95' PGT tranny and have it work, where Gro Harlem's didn't. He was fuzzy on the exact dates, but he thought it was only 97's that had 4.39's. The rest of PGT's are 4.11's according to one of the iMazda.com guru types.

I can't confirm it, but that is what they told me.

[wytbishop]

Here's some numbers from a spreadsheet I created when I started working on my "Frankenstein" tranny project a few years ago just changed the rpm to the once you specified. All calculations were made with a tire diameter of 23.7"

MX-3 4.388:1 final drive
@3000 rpm
1st/3.307/14.58; 2nd/1.833/26.31; 3rd/1.31/36.81; 4th/1.03/46.82; 5th/0.795/60.66 MPH
@4000 rpm
1st/3.307/19.44; 2nd/1.833/34.91; 3rd/1.31/49.08; 4th/1.03/62.43; 5th/0.795/80.88 MPH

626/ MX6 4.11:1 final drive
@3000 rpm
1st/3.307/15.57; 2nd/1.833/28.09; 3rd/1.31/39.30; 4th/1.03/49.99; 5th/0.795/64.76 MPH
@4000 rpm
1st/3.307/20.76; 2nd/1.833/37.45; 3rd/1.31/52.40; 4th/1.03/66.65; 5th/0.795/86.35 MPH

"Frankenstein" G25M-R 3.409:1 final drive
@3000 rpm
1st/3.666/16.93; 2nd/1.842/33.70; 3rd/1.31/47.38; 4th/1.03/65.55; 5th/0.795/91.28 MPH
@4000 rpm
1st/3.666/22.58; 2nd/1.842/44.93; 3rd/1.31/63.18; 4th/1.03/87.40; 5th/0.795/121.71 MPH

Did you ever build this transmission? How did you acheive that final drive? Where did you source 1st and 2nd gear?

[fowljesse]

Thanks Yoda for the exact info, and Wytbishop for the year clarification!

[Nd4SpdSe]

probe and mx-3 trannys are the same so...

Actually, I have learned something from the iMazda guys. Only late model PGTs have the 4.39 final drive. That is why they were able to put the MSP LSD into a 95' PGT tranny and have it work, where Gro Harlem's didn't. He was fuzzy on the exact dates, but he thought it was only 97's that had 4.39's. The rest of PGT's are 4.11's according to one of the iMazda.com guru types.

I can't confirm it, but that is what they told me.

Hmm, you know what, I can't find any conclusive info on that. At first it seems like it was the 97's that we're 4.11, but if came up with searches saying that the 97's have the 4.39. Searching ProbeTalk and Mx-6.com, despite that they don't list any numbers, genericly they say that the Probe has shorter gearing with no mention at all about a varient with the same final drive as the mx6

[wytbishop]

As I said I cannot confirm it, but the guys at iMazda are telling me that this is the reason that their LSD install works and that point at least seems to give it some credibility. If the 95 PGT was 4.39 that diff would not work. And it seems to.

[QUOTE=therieldeal;159960]

only very late probe GT's had the 4.39. it was either 96 & 97 or 97 only, cant remember

[/QUOTE]

[Nd4SpdSe]

Was it Dan[Sac] that posted that info?

I was under the impression that the MX-6 and 93-95 Probes have the same FDR (4:10) and only the 96-97 Probes changed the final drive to 4:38 to make first gear more useful and lower the freeway cruising RPM.

I have personally verified that a 93 FDR is 4:10 and a 96 is 4:38 by removing the diff and doing the math with the # of teeth.

The only thing I'm not 100% clear on is if ALL years of the MX6 tranny are 4:10 FDR.

If my thoughts are correct, your transmission has no bearing on your times.

IIRC, gear ratios remained the same for all MX6s and Probes from 93-97.

This is something that we definitely need Yoda to verify, cause either there's been misinformation on that for many, many year, or new misinformation is about to spread...can't have that. But I don't see people in the Mx-6/Probe community not knowing what trans they have all these years? That doesn't make sence to me. I remember reading quite a while ago that the Probe had the smaller final drive because they put larger diameter tires on it so they used the 4.39 to keep the car with it's advertised acceleration specs. I'll need to refind that info to verify that.

Just talked with a friend of mine. Jim, he used to have a mid-13 Mx-6 with just bolt ons and slicks. He's ran both and was quicker with the Probe trans. He says all Probes are 4.39 while the Mx-6's are 4.11. There was one point he pulled a long gear trans from a Probe, but verified from the VIN it was originally from an Mx-6. He suspects that's exactly what happened with Dan's pulled trans and I'd believe it. Swaps are very common and those cars, like ours, are far from new.

[Yoda]

"Frankenstein" G25M-R 3.409:1 final drive
@3000 rpm
1st/3.666/16.93; 2nd/1.842/33.70; 3rd/1.31/47.38; 4th/1.03/65.55; 5th/0.795/91.28 MPH
@4000 rpm
1st/3.666/22.58; 2nd/1.842/44.93; 3rd/1.31/63.18; 4th/1.03/87.40; 5th/0.795/121.71 MPH

HOLY CRAP - 91.28 mph at 3k rpms?!

based on these calculations that's almost like having a 6th gear LOL!
out of curiousity, any estimate at the top speed capability with that tranny at say 7500 rpm??

At 7500 rpm the theoretical max speed 228.2 Mph. Actually it would not be like having a 6th gears. In a 6 speed tranny the 6th gears is usually geared pretty close to what most 5 speeds are gears at in 5th. (similar difference to between the 4.11 and 4.388 final drives at best) It is just that the gear ratios are spaces closed together usually to use the engine power better in a heavier car with a smaller engine or the keep the engine with a certain rpm range with a high revving DOHC that makes peak toque at higher rpms.