I have a plan which includes purchasing a B13 Sentra, a KA24DE engine, and a 4WD drivetrain. I thought it would be original if you had a more powerful straight 4, and 4WD in a B13 Sentra for rallying purposes.
I was wondering if this extravagent modification is feasible. Can I drop a KA24 in a B13 Sentra? Is there a 4WD drivetrain that will fit on to the KA24. Could this feat be accomplished? (with heavy modification assuming...)
I'd say, swap an SR20DE or SR20DET in instead of the KA24DE it's a better engine. The KA24DE is hardly a more powerfull engine, most people swap those out for SR20DET's. As far as the AWD drivetrain your best bet might be one from an AWD Sunny. I'm sure it can be done, the part to watch out for is the gear ratios, you'll have big problems if the differentials have different ratios. I'd think you could do the whole thing for around $4K-$6K if you do all the work yourself and have the tools necessary.
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Rob '93 SE-R
PM or e-mail me for Progress swaybars $190 shipped, B13 Progress coilovers $1300 shipped and B13 Progress LCA brace $160 shipped.
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AWD B13 Sunnys were sold in Japan with smaller engines such as the SR15DE. Salvaged Japan parts may be available and modifying your floor pan to accept the driveshaft, differential, and rear suspension will cost more that you would expect. Good luck.
So let me get this straight. You want to build an underpowered Frankencar that has unproven reliabiltiy and questionable construction to compete in Open Class against 350 hp WRXs and Mitsu EVOs? 'Cause that's what you'd wind up with.
Aren't most 4wd truck drivetrains not meant to be operated at speed?
I wouldn't knock it until you try it, there's a guy that competes in rally with a B13 XE and does very well against his competition. I would imagine an AWD B13 would do quite well, granted not with that KA24DE but an SR20DE or DET. I also doubt he'd use a truck's AWD system considering there is GTiR and Sunny AWD's that he could use.
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Rob '93 SE-R
PM or e-mail me for Progress swaybars $190 shipped, B13 Progress coilovers $1300 shipped and B13 Progress LCA brace $160 shipped.
Yes, a stock B13 will do quite well in rally in Production and Group 2 (basically an open class for 2wd), I've seen it first hand. BUT, when you convert a non awd car to awd, you must compete in open class and you will be up against WRXs and EVOs which have all the basics right from the factory. It would cost too much to build a awd B13 and sort it out and have a competitive car unless you really know what you are doing. You're further ahead to just buy a Pulsar GTi-R and mod it.
The AWD transaxle used in the Pulsar/Sunny GTiR will not bolt to a KA24DE.The easiest way to accomplish this would be to purchase a complete GTiR front clip,gas tank,and complete rear suspension subframe.The engine will bolt in with SR20DE mounts(don't know about the tranny mount though) and the driveshaft would send power throught the exhaust tunnel.Since the GTiR and B13 have the same wheelbase and trackwidth the parts will interchange dimensionally.You would need to fabricate a sufficiently strong rear chassis to mount the GTiR subframe to since the B13 was never intended to take shock loading at the rear end of the car.This is the simplest way and most parts wil bolt in with the exception of the subframe which would only require the fabrication of four mounting points on the reinforced subframe.I've done extensive research on this and have worked out most of the details of this swap,and would be happy to share any info you need.
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