random motor question

[bigman420]

Will a L20b motor fit in the 320 found one for cheap with four speed tranny still attached

[Dat Lurka]

It's not plug n play.

[bigman420]

That's ok but will it be hitting the idler arm or Amy of the common places it is tight? Idk anything bout the l20b but i have the j13 now...column soft and the other is floor shift which i want

[wayno]

I only can remember of one 320 truck that has an L18 in it, that truck has neither a cooling fan or a cab heater, here is a link to the project, as far as I know, the firewall was not cut on this truck.

http://community.ratsun.net/topic/36253-1964-datsun-nl320/

It is a very tight fit, you can replace the very big 320 idler arm with a smaller 521 idler arm, it bolts right in.

[Dat Lurka]

I believe firewall and rad clearance are the issue.

You'll have to chop up teh firewall and use an electric fan.

The L20b is a lot longer engine.

[bigman420]

Well hell it for sell for 200 for whole thing..just thought maybe

[wayno]

You can get it in there, it's just not easy to get it in there.

You would also need to hunt up a transmission tunnel cover from a late 1965 320 with a floor shift, as that cover is much taller to make room for a floor shift transmission.

It's not a conversion for a beginner, you need to know how to weld and fabricate to complete the project properly.

[ggzilla]

Easier to buy a rebuilt E1 engine. There's one for sale on Ratsun right now for $500.

[Stoffregen Motorsports]

I hate to see guys hack up a rare or unique car or truck just to start a project they will never finish. I say do it right or don't do it at all.

[Dat Lurka]

Yeah, don't even start on it till you have every single tool and component ready to do the swap.

[bigman420]

I can weld, fabricate, build custom pieces for whatever..it was just a question...never really gonna do it just curious....everybody calm down ;)lol.....it will prob always have the j13 it has in it now....all I'm gonna do it drop the piss out of it and cruise it...oh and preserve it's greatness to

[wayno]

I can weld, fabricate, build custom pieces for whatever..it was just a question...never really gonna do it just curious....everybody calm down ;)lol.....it will prob always have the j13 it has in it now....all I'm gonna do it drop the piss out of it and cruise it...oh and preserve it's greatness to

 

Sometimes Ratsun folks get a little excited about 320s, 520s, and 521s, I really don't understand it sometimes, but that seems to be the way it is, I have found that it is best just to do it, and then show it almost done, and one gets way less shit about it.  :rolleyes:

[ggzilla]

J13? So your 320 engine has already been swapped to a larger engine.

[Stoffregen Motorsports]

I can weld, fabricate, build custom pieces for whatever..it was just a question...never really gonna do it just curious....everybody calm down ;)lol.....it will prob always have the j13 it has in it now....all I'm gonna do it drop the piss out of it and cruise it...oh and preserve it's greatness to

Anything can be built with a pile of cash and a welder.

 

The 320 already suffers from a lack of legroom, so cutting into the floor area for a L motor would be a compromise, and from what I hear, the heater would have to be relocated. Not a small project.

 

Swap an A15 in there and a 5 speed and call it good.

[wayno]

Here is an A15/dogleg 5 spd. I put in my first 320 conversion, it went pretty good with 437 gears in the rear.

[bigman420]

What gears does 320 have...and what would be good ratio to use with the factory 4 spd? Seen some for sale out of the fairlady roadster.....isn't that the ones to use? Definitely want to get my highway speed up to 70...any help would be great thanx

[Stoffregen Motorsports]

What gears does 320 have...and what would be good ratio to use with the factory 4 spd? Seen some for sale out of the fairlady roadster.....isn't that the ones to use? Definitely want to get my highway speed up to 70...any help would be great thanx

My 320 had 4.88's. I personally wouldn't go any lower (numerically) than 4.10.

[ggzilla]

And the 4.11 gearset will let you get up to 70 mph, as stock gears go 65 mph. But you are limited by HP from going over about 80mph. Remember the redline is what? 5000 RPM?

[wayno]

It might be able to get to redline on a hiway going down hill with the stock gears, but once you change them, forget it, these engines(E1/J13) just don't have the power to move the weight of the truck on level ground fast enough to get to redline in 4th/5th, I have a strong E1 in my NL320(thanks Mike), with 3.89 gearing, and I can get to 70mph fairly quick as long as there is no headwind, I am not anywhere near redline, I can floor it and will only get a few more MPH, I don't think I could get 80mph, it just doesn't have the power to do it.

 

The only smaller stock engine I have ever run up to redline in 4th(stock trans./rearend) was my 67 roadster, as it did have the power to do it, barely.

 

I put 4.37 gears in my 65 320 with an A15, dual SUs, and a dogleg 5 speed, it went real good and could still be used as a light duty truck, as it had sufficient power to get it going, IMO 4.11 gearing is going to be on the edge for the J13 if you want to use the truck to haul anything, as your issue will be the up hill starts, they can be a bitch sometimes, if it is just a car disguised as a truck, you can use 3.89s, but don't expect to get off the line fast.

[bigman420]

Hmmm...ok so the factory gear set will run up to 65? That will do me ok.....i thought i was told it would barely pull 60 with factory gear ratio....

[bigman420]

I just wanna be able to cruise to car show with bed full of chairs and beer....and be able to get out the way on the roads:)

[bigman420]

OK Another random......how much oil does the j13 hold...bout to change it...hate guessing and doing it qt by qt ....

[ggzilla]

If it is not tuned correctly it won't do 65. With a good set of radial tires it can do 65.

[Stoffregen Motorsports]

If it is not tuned correctly it won't do 65. With a good set of radial tires it can do 65.

With a tail wind and an afterburner.

[Stoffregen Motorsports]

I just wanna be able to cruise to car show with bed full of chairs and beer....and be able to get out the way on the roads:)

Ok, define getting out of the way.