Fellas just wondering if intercooling and better quality bigger turbo on a fresh LD20T would be worthwhile for some extra performance or wasting our time and risking cracked pistons? I heard the LD20T series 2 is better but I like the old look of the first L series diesel more. Any idea why the S2 is much better?

This set it off
http://www.the510realm.com/viewtopic.ph ... 2e54cc1ebe
and not bad for a stocky
http://www.youtube.com/watch?v=gjH013ei ... e=youtu.be

maybe with a set of these with longer rods? or will rod stroke ratio make it ping faster
due to high comp needing the pistons to get away faster from top dead centre?
http://www.youtube.com/watch?v=WstZJkwW ... e=youtu.be

Where the hell do you find a 3.33 diff??
Very interesting though!

_________________
1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
viewtopic.php?t=6579
#SR20Datsun @SR20Datsun

I know where there is a LD20 that the owner could probably be convinced to sell.
I think he may have a turbo manifold as well.

Not an easy engine to find in Australia

LD20T II run a timing belt not a chain and not sure if all LD20T do but I know the LD20T II also have oil squirters under the pistons and oil pump is ran off the nose of the crank like CA and RB etc. I had a stuffed LD20T II bottom end which a got for the crank but scrapped the rest.

_________________
Current:
1964 Datsun SP310 L16 EFI Turbo
http://www.ozdat.com/forum/viewtopic.php?f=33&t=13163
1971 Datsun 521 ute
1994 SSS Bluebird
Previous:
2x 1964 SP310's
3x1000 Coupes, 2x1000 Wagons 2x1000 Sedans
1963+64 320 pickup
1970 Datsun 521

The oil pump on the II runs from the camshaft
eg. LD20II but good notice on the oil piston squirters knocks off heaps of temp
http://shinemotors.trustpass.alibaba.co ... issan.html
The LD20 off the crank
http://asavage.dyndns.org/ftp/Nissan/LD20/389_2.jpg

No it doesn't, LD20T-II runs its oil pump direct off the nose of the crank like a CA SR RB. When you have pulled one apart then tell me what it runs off.
The LD20 in the second picture runs an oil pump the same as a petrol L series, you can see it below the diesel pump.

_________________
Current:
1964 Datsun SP310 L16 EFI Turbo
http://www.ozdat.com/forum/viewtopic.php?f=33&t=13163
1971 Datsun 521 ute
1994 SSS Bluebird
Previous:
2x 1964 SP310's
3x1000 Coupes, 2x1000 Wagons 2x1000 Sedans
1963+64 320 pickup
1970 Datsun 521

"Oil" caused the confusion in your reply as Im used to calling Diesels dirty oil burners.

It obvious the first pic as stated has the diesel pump running off the camshaft using a belt drive
while the bottom pic the early s1 runs the pump off the crankshaft

The lubrication is obvious no need to clarify that.

Started my new job, mainly to benefit myself...


Found one of these and an even earlier more Lseries petrol shaped rocker cover version sitting outside!

Ill take some happy snaps.

hahaha

well if you cant benefit getting me the inlet and exhaust turbo manifolds try to think of it as for a good cause
would like to turbo an L series using the diesel manifolds

Sexy manifolding!

So I picked up an LD20 today to save it from scrap.

Doesn't seem to be a lot of info on these on the net, anyone have a workshop manual by any chance

Hey sled510,
Is that LD20t still sitting around at your work?

I've had a look through there and most of it is LD28 or LD20II, doesn't seem to be much on the early LD20.

Can't be too hard anyway, it is just an L series.

Current stupid idea is compound turbos and see what it will do in my D21

Just get a t28 bb and force boost into it.

The issue with turbocharging atmo diesels is you need to add more fuel as boost pressure rises.
Later tubocharged diesels with mechanical injection pump use a boost activated diaphram on the injector pump that increases fuel.

The toyota 2.4 litre 2lt uses a good mechanical pump that has boost compensation and is tunable. It could be worth looking at adapting that on.

An exhaust temperature gauge is critical.
I used to limit my 3l toyota hilux diesel to around 600 degrees before the turbo.
Pushing around 18 psi into that diesel with an HKS 2540 turbo, intercooler and 3 inch exhaust used to get over 100 kw atw.
I used to run no wastegate on that system. You could just add more fuel and the max boost would rise, also the exhaust temperature.
You always get to a point with diesels where the egt gets too high and you need to back off the fuel. Water/ metanol injection is the next step to make more power.

Modding older diesels is easy and fun. No computers to mess around with. Just pump in more boost and add more fuel

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Circuit Race 1600 in the build