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NastyRay

First L20B build need advice??

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I bought my first datsun 510 coupe a few days ago with the idea in mind of a turbo charged motor like a ca18det.. The motor that came in it was a l20b and i am not ready to put that adide just yet when their is still hope of daisy datsun spooling up her turbo. I know everyone here has great ideas so lets hear them.. Here is what i am working with aroynd 1200$ and as far as my skills go i can fabricate almost anything and i can turn a wrench so please detailed ideas. My fellow datsu. Owners please help me build daisy the way she deserves

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A sedan you mean? Two door left hand drive? $1,200 would barely rebuild an L20B to stock. You won't get an import CA18DET with transmission and ECU for that. If free you would spend more than $1,200 on the car getting it ready. This is a worthwhile project so enjoy the car and the L20B in it while you keep saving.

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In today's world of cheap bolt on horsepower, you are almost always dealing with a great engine to begin with. Add twin turbos to a 4.8L GM LS V8 and make 700 hp, without even removing the oil pan and a rod cap to inspect the bearings. Yep, no problem.

 

While the L20B is a great engine, it isn't going to respond well to cheap power adders, at least not without a solid rebuild with some modifications. As Mike said, you can't even begin to make those mods with $1200. If your intention is to go big or go home, you could put your money to use with one of those $600 Chinese turbo kits and an intercooler. If you're good at fab work, you could have a pull through system plumbed up in a few days. This setup is almost guaranteed to blow up a stock L20B, but hey, have fun with it.

 

Of course I wouldn't actually do any of that, but I didn't want to crap in your wheaties on your first post.

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Cheapest import CA18DET was $1,500 but includes trans and wiring. You'll need a custom rad, engine and trans mounts, exhaust system, convert to internal regulated alternator, shorten the driveshaft, modify gas tank for EFI pump. Now you have a rocket ship that can't get stopped. Needs a big brake up-grade and suspension mods to avoid what you can't get stopped for. Include some big tires. X4 is right!!!!!

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Seems like the 510s that get the highest auction sales prices all have L motors in them. I have always thought that a well built L motor looks way better in a 510 engine bay than any KA or SR.

 

If you've got $1200 to spend, and the motor is in relatively good shape, spend it on the head. Save some more money and buy a set of dual carbs. Build a nice exhaust system with a good header. Get your distributor re-curved and build a heat shield for the intake. You'll be into this setup about $3000-$4000 and have a 510 built in the classic style.

 

Worry about the suspension and brakes later.

 

Or...

 

Spend that money on the suspension and brakes first and have a car that you can flog to death, running headlong into any corner, without killing yourself.

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