L20ET mods

[XRQTR]

As the title suggests this is about the L20ET, in particular I am after information on the best mod's for these engines.

 

I am after any first hand information on what you have done to one if you have ever owned or worked on one, what kind of power can they make with a decent bottom end and turbo.

 

I have just recently bought one, L20ET that is, and the plan is to put it into a Z, which I don't yet have but when I do it will have a new friend to play with as soon as I get it home. I have not as yet set a budget for the build, I know that's bad LOL but I am wanting to see first what they are capable of before i decide how far to go.

 

Thanks in advance for any suggestions and help with this folks.

 

Cheers

Stef

[sco_aus]

Why an L20? there has to be a better engine, infact I can think of about 10 off hand, but I guess its kinda original? To quote Pauline Hanson: "Please explain"?

[Add]

Put another one in, that way u can have a 4wd Z

[sco_aus]

haha, wicked cool.

[XRQTR]

Yes mainly to keep it looking original, but also because they are a cheap enough engine to get hold of, this as well as you can always throw the top end onto an L28 and keep driving.

 

Throw something like a T3/4 and a good FMIC on and have some serious fun, as well it's not overly complicated in it's set up and wiring so making it relatively cheap to tune and maintain in comparison to say a later RB.

[sco_aus]

haha, yeh fair call there was and to a small degree still is a lot of stuffing around, I didnt realise you could put the L28 top end on an L20. Well if you decide to put an R33 turbo on, send me a PM

[luke_mcmahon85]

just get a l28 block...or entire engine, and put the turbo manifold etc on that...the intake will have slightly smaller runners i think, but shouldn't be too much of a problem.

[XRQTR]

Nah the inlet manifold are the same on the L28ET as the L20ET.

 

Sco_Aus you mean an L28 bottom end with the L20 top ye?? I don't think you can go the other way you suggested, can you??

[NZeder]

Don't stick the L20ET head on top of a L28 - why too small valves it will not flow enough for the extra 800cc. The L20ET head should be a 05L. Re how much power can you get from one. Well I know without the turbo a N/A L20a can and has made 200 RWHP yes 200 rear wheel horsepower. That was a full no expense spared race engine pulling to 9000rpm. The L20aE in the Fairlady Z S31 (having had one in the zed family stable) is rated at 130HP NET this vs the L24's 150HP NET. The L20ET is rated at 145HP NET. So with the normal prep work ie balancing, shot penning, port and head flow work etc I am sure you could get that at the wheels with not too much effort out of the L20ET.

 

Now having said that if you are going to the expense of getting more HP from the L20ET might be better to spend the same $$ on a L28ET (ie use the L20ET exhaust manifold with a bigger turbo which you would do with the L20ET anyway but maybe not as big vs the L28ET) as you would get more HP for the $$.

 

But don't let me influence you - your car/engine and $$ ie no one tells me how to spend my $$ (well the wife does get upset with the $$ I have spent on the zed and I still only have a bodyshell to show for it, well lots of parts in the roof and all around the place)

 

And yes the L20ET intakes are different they do have smaller runners.

[sco_aus]

Yeh thats what i meant, but i agree, why put a less flowing head onto it? Definately pretty original though. So that would mean the L20 was a 6 cylinder? I didnt know that till this thread. Learn something everyday.

[sco_aus]

Yeh thats what i meant, but i agree, why put a less flowing head onto it? Definately pretty original though. So that would mean the L20 was a 6 cylinder? I didnt know that till this thread. Learn something everyday.

[XRQTR]

Well didn't the Z432R's come out with an L20??

 

edit: S20 and damm does it look hot in that bay, here is one I just found.

 

http://translate.google.com/translate?hl=en&sl=ja&u=http://www.teccom.jp/contents/cars_z432r.htm&sa=X&oi=translate&resnum=1&ct=result&prev=/search%3Fq%3DZ432R%26hl%3Den

 

Whether or not that was a turbo I don't know, there is some homework for me, and I thought school finished 17 years ago :cry: :cry:

 

As for the inlet, a trip down to the extrude honers will do that wonders, I'll send the head along with it to get some porting and matching at the same time.

 

If I wanted a high HP engine I have a 351 Windsor sitting in my back yard, add to that the 427 storker kit that a mate has and has offered it if I want it, then finish it off with an injected inlet manifold and a valley mount blower. This would be good for around 700hp+ if you wnat it on tap, but it's not a straight line racer, that's coming but not just yet LMFAO :twisted:

[gav240z]

Well didn't the Z432R's come out with an L20??

 

No the 432 and 432R had the S20 engine. A completely different engine to the L-series engine. The block and head were completely different and not interchangeable.

 

The S20 was a straight 6 twin cam engine with 2.0 litre capacity. They were also fitted with Triple Weber carbs and the engine was rated at 160 PS.

 

The same engine was also found in the early skylines including the KPGC10 and KPGC110, it was a very successful race engine.

 

The L20 non turbo was found in the Fairlady Z S30 which was only sold in Japan.

 

The Fairlady 240zg HS30-H had the L24.

 

The later L20ET was used in the C210 skyline.

[NZeder]

And Gav don't for the that the L20ET was also used in a Zed the S130 in the JDM Fairlady Z Turbo.

 

The L20a and L20aE along with the L20ET were used in a number of cars over the year within the Nissan stable.

 

The Cedric's (230, 330, 430 etc), Laurel's (C31 - can't recall the other earlier body codes), Skyline's (C10, C110, C210, R30, some R31), Leopard's, Fairlady's (S30, S31, S130) and many many more but the L20ET came out in the early 80's so pretty much the later of the models listed above ie S130, 430, C31, R30.

 

Gav I did not know the that C210 had the L20ET I would have thought this was too early. Re the C210 range there was also the C211 (facelift/Series II versions)

 

Well we are lucky here in NZ to have a lot of JDM car = hence how I know this.

[sco_aus]

XRQTR, the capacity of the V8s are too large for conversion laws now, you might get away with a 302 Clevo or 308 Chev, but I dont think so.

Would be awsome to have the 427 in there though Putting a 302 on gas in my Troopie next year.

[XRQTR]

427 but with a block stamped 351 :twisted: :twisted: