bananahamuck Posted August 14, 2014 Report Share Posted August 14, 2014 .... What? I know right?? That's exactly what i said when i read Datzenmike colluding against me to help Zach weasel outta our deal. :rofl: :rofl: 1 Quote Link to comment
robopineapple Posted August 14, 2014 Report Share Posted August 14, 2014 No idea who Zach is.. Sounds like a punk as bitch ;) 1 Quote Link to comment
bananahamuck Posted August 14, 2014 Report Share Posted August 14, 2014 My letter " " doesn't wor so i have to use "h" instead. Quote Link to comment
datzenmike Posted August 14, 2014 Report Share Posted August 14, 2014 I know right?? That's exactly what i said when i read Datzenmike colluding against me to help Zach weasel outta our deal. :rofl: :rofl: I wasn't going to read ten pages to figure out what was going on. Blah, blah D21, blah blah S13 200sx blah blah. If this is going into an A10 then the driveshaft will need shortening anyway so either will work as well as the other. Did you look at an A10 automatic driveshaft? If it's like my 710 the auto trans is the same length as the FS5W71B 5 speed so use it and no shortening needed... well if the trans is 31.5" long. This D21 trans is pretty close and only 3/4" short. Quote Link to comment
robopineapple Posted August 14, 2014 Report Share Posted August 14, 2014 So that will work for my a10? Quote Link to comment
datzenmike Posted August 14, 2014 Report Share Posted August 14, 2014 Maybe. You have an auto or standard. If standard your driveshaft is going to be too long no matter what 5 speed you put in it. I believe the A10 automatic is 31.5" long so an auto driveshaft will be shorter than your 4 speed one. As the D21 pictured is 30.75" that's only 3/4" shorter than perfect. I'm saying that D-21 5 speed with an A10 auto driveshaft should fit or be very close. Quote Link to comment
robopineapple Posted August 14, 2014 Report Share Posted August 14, 2014 I have five speed manual right now Quote Link to comment
bananahamuck Posted August 14, 2014 Report Share Posted August 14, 2014 i think what he's saying is,, it isn't really the one you wanted ( 240sx ). It may work and fit but it isn't what everybody else is using. That is worded kinda confusing but i think you get what i'm saying. Are the gear ratios different between this truck one and a 91 240sx ,, and which ones ( gear ratio wise) would be better suited for a this ( A10) car?? You never hear of anyone using a truck trans considering they are far more plentiful and i guess i'm wondering,,, why. Quote Link to comment
datzenmike Posted August 14, 2014 Report Share Posted August 14, 2014 Pretty sure they are the same ratios but they are the same basic transmission but for the length. I'll check the ratios tonight. I've never had one... well I have one but no front case on it... so it's hard to measure from the bell back to get a proper distance. I could try. 30.75 would be awfully close to a 71B tranny. I have five speed manual right now So all you really need is a Z series front case so it will fit a KA engine. The D21 5 speed would be stronger. Quote Link to comment
datsunfreak Posted August 14, 2014 Report Share Posted August 14, 2014 You never hear of anyone using a truck trans considering they are far more plentiful and i guess i'm wondering,,, why. I'd bet because most people get a trans with their KA from the donor vehicle? Usually when I've bought one in the past it was with everything (engine, trans, wiring, etc). I've used one behind a KA24E before. Worked just fine. Quote Link to comment
robopineapple Posted August 15, 2014 Report Share Posted August 15, 2014 Well if it works, it works haha Quote Link to comment
datsunfreak Posted August 15, 2014 Report Share Posted August 15, 2014 Also... Are the gear ratios different between this truck one and a 91 240sx ,, and which ones ( gear ratio wise) would be better suited for a this ( A10) car?? I am 98% sure the 240SX trans has the 0.76 or 0.74 5th gear, whereas most of the trucks use something in the low to mid 80s (0.85 sounds right for some reason). In the 1980s, typically the 4 cylinder stuff had a 5th gear in the mid 80s (trucks, 200SX, etc), while the 6 cylinder stuff had 5th gear ratios in the mid 70s (280ZX, 300ZX). The factory A10 dogleg has an 0.86 5th gear. I'd assume that because of the torque of the KA24E/KA24DE, they felt they could get away with the taller "6 cylinder" 5th gear? As to which is better, it depends on what you want. Do you want maximum fuel economy and minumum freeway revs? Go 240SX. Do you want to be able to easily accelerate from a 65pmh roll without dropping a gear? Go truck. Quote Link to comment
datsunfreak Posted August 15, 2014 Report Share Posted August 15, 2014 And the 1-4 gears are most likely basically identical. Most difference I could see it having is a slightly shorter first gear to make it easier to get a loaded truck moving without burning out the clutch? Quote Link to comment
datzenmike Posted August 15, 2014 Report Share Posted August 15, 2014 I'd bet because most people get a trans with their KA from the donor vehicle? Usually when I've bought one in the past it was with everything (engine, trans, wiring, etc). I've used one behind a truck KA24E before. Worked just fine. And it should. the S13's 71C just has a longer tail that the one in the D21. I can't find definitive proof that the S13 and D21 KA23Es had the same ratios. Probably. I'll keep looking. The KAs are more powerful that the older motors and you can always run lower rear gears to suit. Quote Link to comment
flatcat19 Posted August 15, 2014 Report Share Posted August 15, 2014 What is the length of the truck KA 5 speed? Quote Link to comment
flatcat19 Posted August 15, 2014 Report Share Posted August 15, 2014 Damn smartphone! Making me look dumb. I can do that all on my own. Quote Link to comment
datsunfreak Posted August 15, 2014 Report Share Posted August 15, 2014 I just thought you were really impatient... :rofl: Quote Link to comment
datzenmike Posted August 15, 2014 Report Share Posted August 15, 2014 Had to look through the old photobucket of science ,, but this is what i have. Datzenmike might come by to prove me wrong. so we wait. Can't remember if measurements are to end of flange or output shaft. Quote Link to comment
mhub91 Posted August 15, 2014 Report Share Posted August 15, 2014 All 71C had the exact ratios, even in the Silvia, 180SX, 200SX (euro), trucks and 240sx Quote Link to comment
datsunfreak Posted August 16, 2014 Report Share Posted August 16, 2014 All 71C had the exact ratios, even in the Silvia, 180SX, 200SX (euro), trucks and 240sx According to my FSM for the '93 and '97 trucks, they had either an 0.838 (2WD) or 0.821 (4WD) in the FS5W71C trans. Quote Link to comment
datsunfreak Posted August 16, 2014 Report Share Posted August 16, 2014 From the FSM for the S14... S14 FS5W71C: 1st - 3.321 2nd - 1.902 3rd - 1.308 4th - 1.000 5th - 0.759 D21 FS5W71C (2WD): 1st - 3.321 2nd - 1.902 3rd - 1.308 4th - 1.000 5th - 0.838 So except for 5th gear, all the gear ratios are the same. :thumbup: Quote Link to comment
flatcat19 Posted August 16, 2014 Report Share Posted August 16, 2014 Stop being right, mhub. Quote Link to comment
datzenmike Posted August 16, 2014 Report Share Posted August 16, 2014 I couldn't see any gear differences by part numbers BUT. The overdrive 5th gear set between the S13 and the D21 are different. Quote Link to comment
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