U20 into 240Z

[DAW]

Rear sump, motor mounts at the front of the block, bulletproof overbuilt engine, fairly abundant parts out there (factory option twin Solex sidedrafts, performance cam, etc.)...

 

Probably heavy for a 4 cyl, but 87mm bore, 83mm stroke, OHC,...turbocharge?

 

I searched and didn't see much. Has anyone done it? DAW

[GrayZee]

U series motors are from a sp311 correct? I don't imagine there are alot of parts available for that engine (I could be wrong) but many years ago, my high school auto shop teacher had a late 60's honda (600cc car) He swapped in a U series engine, turbocharged it, ran water injection and managed to pull a time in the 12's Not bad considering it was done in the early 80's

[ZG240]

If you were going to go with a four-cylinder engine, why would you choose the older U20 over the newer L16, L18, L20B or LZ22? The U20 was Nissan's first OHC engine, but the L-series was produced in far greater numbers and was considered a big improvement over the U-series.

 

You could even go with a newer Z22 or Z24 (80's Datsun pickup) and have much greater reliability, torque, and parts availability.

 

Not criticizing....just wondering what the appeal of the U20 is. That engine put out a stock 96 HP, or just about the same number as the 1.6 liter L16. The U20 could be built to be fast -- heck, the BRE team did it -- but the Roadster was much lighter than the 240Z and the L-series engines pushed the heavier 510-610-710 series cars very well.

[GrayZee]

If you were going to go with a four-cylinder engine' date=' why would you choose the older U20 over the newer L16, L18, L20B or LZ22? The U20 was Nissan's first OHC engine, but the L-series was produced in far greater numbers and was considered a big improvement over the U-series.

 

You could even go with a newer Z22 or Z24 (80's Datsun pickup) and have much greater reliability, torque, and parts availability.

 

Not criticizing....just wondering what the appeal of the U20 is. That engine put out a stock 96 HP, or just about the same number as the 1.6 liter L16. The U20 could be built to be fast -- heck, the BRE team did it -- but the Roadster was much lighter than the 240Z and the L-series engines pushed the heavier 510-610-710 series cars very well.[/quote']

 

It's funny you should mention their first attempt at OHC, I recall that that engine actually is based on a older engine that was OHV. You can still see the remains of the old OHV timing cover.

As for the low HP, I seem to recall that the there were two models. There was the 1600 and the 2000. The 2000 came with dual solex carbs and made 150hp stock. Very similar to the L24 no?

[DemonZ]

The standard 2000 was rated at 135, and Solex option was 150 which included a different cam.

 

 

I'm guessing U20 parts are more expensive than L-series or maybe SR20. It was about 10 years ago that a U20 timing chain set was around $475, but have heard prices have come down quite a bit since then.

 

 

 

 

http://www.risensonracing.com/phpBB2/

 

http://www.311s.org/phpBB2/

[Guest TR240z]

You can sell those U20 parts for a good bit of the price of an SR20 engine...