ppeters914 Posted September 17, 2007 Report Share Posted September 17, 2007 Not sure if this should be in the Engine or Driveline tech section. Lemme know if it needs moving. Anyhows.... Now, the L and the Z trannies will bolt up, BUT, because of an 11 degree engine tilt, the swapped tranny will be leaning to one side. For example, a Z tranny on an L engine will be tilted, and have the shifter over beside the pass seat. Plus the tranny mount will need to be modified. So what I'm saying is that the bell bolt pattern is the same but is clocked to a different angle depending if it's a Z or an L. First, I'm assuming the L20b and 4-speed swapped into my 411 came together. Yeah, yeah, we all know what "assume" means... :rolleyes: So, if the engine was NOT tilted, then the tranny would be leaning? And, if so, how big a problem is that regarding the engine and/or tranny? Quote Link to comment
datsunaholic Posted September 17, 2007 Report Share Posted September 17, 2007 The engine could care less. The carb wouldn't be level which would cause problems with the float in a downdraft (would be inaccurate, but not by a lot) and would look funny. The transmission... the rear mount wouldn't be level. The rubber insulator would either have to be wedge-shaped or it would be under an immense amount of tension, trying to straighten itself out and may fail prematurely. And the shifter would be offset to one side. As for your 411... it really depends on what tranny it has. NAPS-Z transmissions are relatively rare except in the longtail 5-speed variety that came in '80-83 200SXs and '81-86 720s. There was only one model that came with a shorttail NAPS-Z tranny- the '80-81 510, which aren't particularly common. Quote Link to comment
ppeters914 Posted September 17, 2007 Author Report Share Posted September 17, 2007 The transmission... the rear mount wouldn't be level. The rubber insulator would either have to be wedge-shaped or it would be under an immense amount of tension, trying to straighten itself out and may fail prematurely. Crap. That would explain this: Which means I need to resolve this before the mount fails, eh? :( And the shifter would be offset to one side. Shifter looks straight to me, but that don't mean much. As for your 411... it really depends on what tranny it has. NAPS-Z transmissions are relatively rare except in the longtail 5-speed variety that came in '80-83 200SXs and '81-86 720s. There was only one model that came with a shorttail NAPS-Z tranny- the '80-81 510, which aren't particularly common. Mine is a 4-speed. Engine has W58 head w/ Cannon intake and Weber DGV 32/36 carb. Quote Link to comment
datsunaholic Posted September 17, 2007 Report Share Posted September 17, 2007 That's not a NAPS-Z tranny, it's a case of the engine being installed with too little tilt and an incompatible late-model (77-79) transmission, using a shadetree method of making the rear mount fit. The original 411 engine would have sat vertical. Basically shimming the motor mount on the driver's side to level out the intake manifold would be the fast answer. Quote Link to comment
ppeters914 Posted September 17, 2007 Author Report Share Posted September 17, 2007 Basically shimming the motor mount on the driver's side to level out the intake manifold would be the fast answer. Duh! Great idea, Doug. Would I still have that problem if I went to a 5-speed? Quote Link to comment
datsunaholic Posted September 17, 2007 Report Share Posted September 17, 2007 Would I still have that problem if I went to a 5-speed? Yes, since the doglegs and late 4-speeds had the same mount location. Quote Link to comment
kiznook Posted September 17, 2007 Report Share Posted September 17, 2007 heres a dumb question: when using a Z block and an L head; L mounts means L angle right? meaning you would use the L transmission...right? What I'm getting at is I have no real clue what kind of transmission is in my car :( I feel like a noob Quote Link to comment
datsunaholic Posted September 17, 2007 Report Share Posted September 17, 2007 L head = L mounts and L transmission. The block has nothing to do with it. I mean, you COULD mount the bugger dead straight, but then the carbs woul dbe pointing down at the wheelwell. The only time you'd ever want to use a NAPS-Z transmission orientation is if you're running a pure NAPS-Z engine or a KA. Quote Link to comment
Icehouse Posted September 18, 2007 Report Share Posted September 18, 2007 Pete I think the trans mount is the last of your worries... What about the wipers!! Quote Link to comment
ppeters914 Posted September 18, 2007 Author Report Share Posted September 18, 2007 Pete I think the trans mount is the last of your worries... What about the wipers!! Actually, until it's running, the wipers don't matter squat either. Besides, that's what they invented Rain-X for. :D What's this? Weather turns poopy and we're all bs'ing on the computer. In the good old days we'd gather somewhere and drink.... Quote Link to comment
Icehouse Posted September 18, 2007 Report Share Posted September 18, 2007 Actually, until it's running, the wipers don't matter squat either. Besides, that's what they invented Rain-X for. :D What's this? Weather turns poopy and we're all bs'ing on the computer. In the good old days we'd gather somewhere and drink.... Rain-x requires motion about 35 so your L motor better be top notch :D I bet you are gathering some beers :D You better heat them in the microwave to keep warm :D I heard your furnace is broke :( Quote Link to comment
datsunfreak Posted September 18, 2007 Report Share Posted September 18, 2007 What I'm getting at is I have no real clue what kind of transmission is in my car :( I feel like a noob From that pic it looks just like a stock 510 4spd. Quote Link to comment
ppeters914 Posted September 18, 2007 Author Report Share Posted September 18, 2007 Rain-x requires motion about 35 so your L motor better be top notch :D OUCH! I bet you are gathering some beers :D You better heat them in the microwave to keep warm :D I heard your furnace is broke :( Not broke, but oil tank flushed & decommissioned. After last winter's oil bills, we decided to make the switch to gas. Going w/ a Rheem modulating furnace from Sundance. Like they say on the Quizno's commercials....Toasty! :cool: Quote Link to comment
kiznook Posted September 18, 2007 Report Share Posted September 18, 2007 uh oh....is the wolfman getting a HVAC boner?? Quote Link to comment
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