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mattster03

My F20C Swapped Zcar Build Thread

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Well that would be a bit dissapointing if there was only 30-40lbs difference...  I suppose the 6 speed vs. 4 speed is going to bring the weights of the two full pullouts a lot closer

The f20s are surprisingly big engines all things said and done.  Its interesting installing them into the rollas, most people use sub frame spacers to clearance the engine and the hood- Then take a sledge to the transmission tunnel to persuade it a bit further.  But like you noted, BRILLIANT 6 speed transmission (god they feel amazing to shift), and keep in mind how much further back that chunk of weight will be sitting (Depending on where you put it).  Think youll be happy with the 200'ish whp youre looking at making, or do you intend to boost/modify it much?  Theres some pretty nifty turbo and supercharger kits available for the engines.  Its pretty easy for them to see 300 whp with very little effort and really bring them to life.

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The f20s are surprisingly big engines all things said and done.  Its interesting installing them into the rollas, most people use sub frame spacers to clearance the engine and the hood- Then take a sledge to the transmission tunnel to persuade it a bit further.  But like you noted, BRILLIANT 6 speed transmission (god they feel amazing to shift), and keep in mind how much further back that chunk of weight will be sitting (Depending on where you put it).  Think youll be happy with the 200'ish whp youre looking at making, or do you intend to boost/modify it much?  Theres some pretty nifty turbo and supercharger kits available for the engines.  Its pretty easy for them to see 300 whp with very little effort and really bring them to life.

 

Yeah, you are right, the weight will be significantly further back which will be a nice little bonus for sure.  It seems as if it will have no problem fitting completely behind the stock engine subframe and clear the tunnel with no problem.  The plan for my "phase 1" is to just run it N/A; but once I get that phase completed I will start thinking about boost; I think that a supercharger package will fit very similarly to S2000 kits, but I would much prefer a nice little Precision 30mm turbo for a nice little boost in power.

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Nice swap thread. A friend had an F20 in an AE86. I drove it a few times at autox. Good thing the Z has more engine bay as it was a tight fit in the toy. I liked the engine but the power builds rather than hitting hard and I am a turbo guy now a days so I'm betting the turbo will be sooner rather than later.

 

I was surprised on not losing more weight when I put the SR in my Z. It did however end up with 52% on the back tires(with me in it) which is a good thing.

 

Keep us informed please.

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Turbo systems add a lot of weight that people don't think about. Take your intercooler, turbo, piping, larger exhaust, etc, and toss it all on a scale. Then there are all the other items that get heavier due to the extra power like brakes, wheels and tires, driveline, diff, transmission, suspension, etc. It adds up pretty quick. It's one of the reasons going from NA to turbo isn't worth it unless you are going to be trying to gain a reasonable amount of power. I often wonder how much weight I could save on my SR if I went with an EFR turbo, titanium manifold and exhaust, and changed to a short v-mount IC... anyone want to give me money to try it out? ;)

 

The F20 is a good candidate for either boosting option. It just depends on what you want. If you aren't adding a lot of power or don't care about constantly pushing the limit up, the supercharger is probably a better option. It's less complex, lighter, and has less peripherals involved. I never did decide how I wanted to boost my S2000. After driving a few turbo S2000s and a couple supercharged ones, I kept going back and fourth. I liked the instant response of the small turbo cars, but I could get the same from the superchargers with less weight. I liked the pull of the larger turbo cars, but I hated the loss of response and general slowness during transitional periods. Either way you go I'm sure you will be happy as long as you don't melt a piston.

Edited by CasperIV

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Turbo systems add a lot of weight that people don't think about. Take your intercooler, turbo, piping, larger exhaust, etc, and toss it all on a scale. Then there are all the other items that get heavier due to the extra power like brakes, wheels and tires, driveline, diff, transmission, suspension, etc. It adds up pretty quick. It's one of the reasons going from NA to turbo isn't worth it unless you are going to be trying to gain a reasonable amount of power. I often wonder how much weight I could save on my SR if I went with an EFR turbo, titanium manifold and exhaust, and changed to a short v-mount IC... anyone want to give me money to try it out? ;)

I get what youre saying, buuut iunno how inclined i am to agree. But I guess it depends on how much is a "reasonable" amount of power to you.  You could add 200 pounds to a 2200 pound car making 200 hp, increase the power by only 50 hp, and have a notably faster car.  It really doesnt take a low of power to offset the weight, within reason.  The trickier bit imo is the downside to handling. 

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I'm late to this... The stock engine crank centerline in the S30 is offset to the passenger side of the car.to line up with the rear diff.  You might be creating a vibration problem by mounting your engine dead center in the engine bay.  Line it up with the diff.

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I'm late to this... The stock engine crank centerline in the S30 is offset to the passenger side of the car.to line up with the rear diff.  You might be creating a vibration problem by mounting your engine dead center in the engine bay.  Line it up with the diff.

 

Wow... thanks for the advice.  I will make sure to align it with the diff rather than centering it in the engine bay!

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Life happened!  I've still got the car, and make small progress every once in a while.  I do think I'm going to start having a significant amount of time available to start working on this again in the fall.  Sorry to have such a letdown of a build thread thus far!

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Life happened!  I've still got the car, and make small progress every once in a while.  I do think I'm going to start having a significant amount of time available to start working on this again in the fall.  Sorry to have such a letdown of a build thread thus far!

Good to see the project wasn't scrapped though! I've recently been bitten by th S30 bug and was along the lines of thinking about doing the L28et swap on an earlier 280z. Coming from the Honda community I think this would be a great idea as well. I was hoping you had at least gotten to the electrical and EMS part being thats I'd be the most worried about haha.

 

Good to see you and the project are still hopeful though!  Best of luck!!

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Edited by KevinK121

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Glad to see this is still in the works. I Knabbed the original 260z transmission and a few spare parts off you a couple years back now.

 

 

the auto to manual swap was a a success and it's still shifting great! I'm a little skeptical it only has 4800 miles, but maybe they were track miles... 2nd gear can be a bit rough.

Edited by HuD 91gt

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