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My question would be are the gear rations diffrent if i switch this into a b13? I didnt see that part covered and if it was just smakc about the head area for a bit.
Yes, the gear ratios are indeed different. I believe NissanSpeed01 did some spreadsheets regarding this.
Here's what my transmission looked like when i had it dissasembled for a JGY LSD Install. I checked gear wear and there is hardly any on 3rd gear, thats it. Its holding 500whp for now with no problems. We'll see if it holds at the track. Great write up. It helped my dissasemble mine. The last one is the JGY LSD installed. With the B15 and P11 trans you have to remove the ring gear and completely dissasemble the differential and reassemble it in a press.
With the B15 and P11 trans you have to remove the ring gear and completely dissasemble the differential and reassemble it in a press.
I'm guessing that you had to reassemble the diff in a press because your JGY diff was decompressed when you installed it? Reason why I ask is because I didn't need to use a press, I pulled the horseshoe pins out of the JGY diff after the VLSD was completely reassembled.
On a different note, I'm ecstatic that your tranny has held up to the power you have been giving it. It makes me very confident about my turbo project. I was a little hesitant to go turbo before I learned about this tranny's resilience since my friend is on his ninth B13 tranny in 5 years. Thank God for the B15/P11 tranny!
What kind of friction device did you install? Does anyone have a list of what is known to fit? Supposedly a Phantom Grip 906 Gold will work, but if the NISMO diff or God bless us one of the rare Quaiffe diffs would fit...
Side note; if the diff itself isn't an issue, All B15s that didn't have QR engines actually use the same transmission design; RS5F70A or RS5F70V. If you don't need the "V" and can put up with a taller final drive (3.87:1?), don't overlook the Sentras with drum brakes.
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"I can tell you all day long that my dick is 25% stiffer than yours, but without 'hard' numbers or independent testing, who's going to know?"
Side note; if the diff itself isn't an issue, All B15s that didn't have QR engines actually use the same transmission design; RS5F70A or RS5F70V. If you don't need the "V" and can put up with a taller final drive (3.87:1?), don't overlook the Sentras with drum brakes.
Now I'm thoroughly confused. The FSM lists the tooth counts and ratios, and the ratios are not the result of the tooth count. Is there an idler assembly in the RS5F70 that is actually a divider set? Even at that...
'00 FSM says:
Code:
FINAL GEAR
Engine QG18DE SR20DE
Transaxle model RS5F70A RS5F70A RS5F70V
Final gear ratio 3.827 4.176
Number of teeth
Final gear/Pinion 71/17 71/16
Side gear/Pinion 16/10 14/10
mate gear
And the '03 FSM says:
Code:
FINAL GEAR
Engine QG18DE
Transaxle model RS5F70A
Final gear ratio 4.176
Number of teeth
Final gear/Pinion 71/17
Side gear/Pinion 16/10
mate gear
Why does the tooth count of the GXE mathematically conflict with the result ( 71 ÷ 17 = 4.174 ), while the SE is also mathematically incorrect ( 71 ÷ 16 = 4.437). And if the tooth counts and Sg/Pmg counts didn't change, why is the ratio different between '00 and '03 GXE transmissions?!? And how the Hell are you supposed to read tooth counts in the automatic transmissions?
Why does the tooth count of the GXE mathematically conflict with the result ( 71 ÷ 17 = 4.174 ), while the SE is also mathematically incorrect ( 71 ÷ 16 = 4.437). And if the tooth counts and Sg/Pmg counts didn't change, why is the ratio different between '00 and '03 GXE transmissions?!? And how the Hell are you supposed to read tooth counts in the automatic transmissions?
Hi there, i really didn't know to much on trans for the sr20, but after seen this thread i got it , i dont know if all but a big part of it.
After all this info i went on internet finding any device that can automated or robotized the 5 speed manual trans,(any) , take some ideas and if not too dificult building one, already got some ideas on my head and i want to know what the forum comunity would think about it.
Directed on this tread, verry good one CoalitionSE-L i would need any pic that show the other side of the trans where it show the shifter rods with the forks, and another when your done on your building how the shift link conects to the trans.
Al this to give an idea of the path of the links and come up on the device that will move those links, maybe an electric or hydralic actuated one.
Thanks in advance.
This is the best forum, keep on sr20 comunity!!!
If you're going to all of the trouble of "automating" your transmission, you might as well just buy a sequencial transmission from Quaife. They have Nissan bellhousing in-stock...
its to mcuh time to spare, and my girlfriend has beguin to drive a Renault Twingo 5 speed manual (and she is not to good on it) i can actually build the system and match to any possible gearbox
Well actually i got a broken leg and i have to stay on my house wasting time for 3 weeks and i said well....