Sr20det

Article may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Photo via moi-meme. This well-known Japanese performance engine was normally produced in cars in the Japanese and European markets.

The engine was produced until This engine was and still is popular for its high performance output for such a small, light engine. Many of these engines are no longer in stock condition as this engine is very popular for part swaps to further increase performance.

This engine was not offered in any regular offerings in North America, but due to the demand for this engine, there are many shops that specialize in swapping the SR20DET engine specifically. The red top and the black top versions were quite similar, offering hp at RPM and lb-ft of torque at RPM. The next engine was the S14 model, which was introduced in This engine offered a bump in horsepower of hp at RPM, although the peak torque remained lb-ft.

In the S15 model was introduced. This engine was capable of hp at RPM. The exact displacement of this engine is 1. This engine has both a bore and stroke of 3.

Nissan SR20DET

With any performance engine, especially a smaller performance engine like this one, weight is critical. To add strength and robustness, especially to handle the increased pressure from this turbocharged engine, the cylinders were lined with iron liners. This engine also used cast aluminum pistons, although they were treated with a special thermal coating at the top. The valvetrain for this engine, as already alluded to, is dual overhead camshaft.

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This 4 cylinder engine has a total of 16 valves, with 2 intake and 2 exhaust per cylinder. Other material considerations were also taken into account to provide robustness for this performance engine that operates at high engine speeds and under the increased pressures from the turbocharger. Some of these improvements include a deep skirt design as well as larger than normal crankshaft and connecting rods for this displacement of an engine. The 2.

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This engine is particularly popular among tuners; as some dedicated shops exist that solely swap the SR20DET engine. This turbocharged engine offers up to hp in some applications, which is very strong for this size engine, although with updated tuning kits now available, the performance can significantly exceed this. Although this engine was never offered in normal production in the United States, it is not rare for someone to buy a compatible Nissan car and install the SR20DET.

Although there are certainly many of these engines still available, it is very likely that the parts are not stock, as this engine is commonly customized.The Nissan SR engine is a 1. It has an aluminum head and block with steel sleeves and has a DOHC 4-valve design, with variable valve timing on select models. The engine was used in many small to medium Nissan vehicles including high-performance turbocharged variants.

It was designed by Nissan as a replacement for the earlier CA series of engines. The 1. These cars were tuned by Autech Japan. This is also claimed to be the most powerful production 1.

The SR18Di is a 1.

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This model used some cast iron blocks and it was used on the P10 generation Nissan Primerabut due to the low overall power this engine option was dropped on the next generation. The SR18DE is a 1. The SR18DE crankshaft was produced with four fewer counterweights than the SR20DE variants, which have eight, for lighter weight and better fuel efficiency. These lightweight crankshafts were also homologated for use in the Japanese N2 Silvia racing program and later used in the SR20VE engine.

The SR20Di is a 2. Similar to the 1. It first appeared in Octoberand over time it was gradually phased out with the introduction of the QR low-emissions engine family. This engine has the following specifications SAE In both these cars the engine is aligned in a transverse fashion. The S14 and S15 use a bigger turbocharger than the S13 models. The 2. Available as original equipment only in the Japanese market, the 2. From Wikipedia, the free encyclopedia.

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Nissan Motor Company. Alfa Romeo Nissan Autoveicoli S. Dongfeng Motor Co. HR UD. Categories : Nissan engines Inline-four engines Gasoline engines by model. Hidden categories: Articles needing additional references from November All articles needing additional references All articles with unsourced statements Articles with unsourced statements from November Namespaces Article Talk.

Views Read Edit View history. In other projects Wikimedia Commons.In one of the most famous and legendary Nissan engines was produced. Nissan Bluebird was the first car, equipped with SR This engine replaced cast-iron CA SR20DE used aluminium cylinder block with dry cast iron sleeves.

It is a square engine, so its piston stroke and cylinder diameter are of the same size mm. SR20DE connecting rods are Cylinder head has two camshafts and 4 valves per each cylinder.

This engine uses multi point fuel injection system.

sr20det

Along with this, SR20Di version was produced, which used single point fuel injection system. In contrast to SR20DE, it had modified head with revised ports. It increased the engine rev limiter to 7, RPM. In this engine was modified a little: the intake camshaft was changed for the new durationlift 8. It reduced redline to 7, In SR20DE roller rocker appeared. And also they used new valves 3mm shortermodified valve springs, light pistons, lighter crankshaft and short-length intake manifold.

These modifications were produced tilland after that SR20DE was discontinued. It had red valve cover and had been produced since to This engine used Garrett T25G turbocharger, and the maximal boost pressure was 7 psi 0. It had new pistons compression ratio 8. Compression ratio is abated to 8.User Name. Remember Me. We had a customer bring us an 03 Z and he wants a truly unique set up. We are fully building the engine, making a top mount manifold custom with a Garrett GT30R turbo and cc inj's.

This will allow us to manage the engine as well as to maintain the VTC, traction control, cruise control, and all factory gauges.

sr20det

This is a cool build. I hope you like it. Here are the pics as it is coming together. The engine has been sent out, hot tanked, bored. The crank was polished and balanced. The head has been completely reconditioned and the new springs, retainers, and cams are installed.

And of course, this is the heart of it all This power plant should make an easy whp on pump gas. I know that some people will not like this build because we have taken out a perfectly good running VQ35 that we could have boosted and made whp or built and gotten more than whp. All true, but we have done Z's just like that. This is something unique that you won't see 50 of at a car show. And the way we are doing it is truly inspiring.

I don't think anyone has maintained all the OEM functionality of the gauges and drive-by-wire. We have finally built the engine and are getting ready to install into the chassis. Here are pics of the engine build:.

High Horsepower SR20DET Engine Build…Done Right!

Now we are putting the bottom end together with all new pistons, rings, main bearings, rod bearings, ARP's and metal head gasket:. Then we installed the ARP head studs, Cosworth head gasket, and cylinder head. Along with in the intake manifold, valvecover, and custom made exhaust manifold:. We started making the turbo manifold today. Login to Z Fever. Forgot your username? Video and Map.Out of state customer called us to inspect and quote an engine rebuild.

Piston to cylinder clearances were 0. Not only were the bore clearance almost double than recommended, the bores were also tapered and out of round. Due to heavy damage of the main stud threads, the block was mounted in a 2-axis CNC machine and all threads repaired using Time-sert thread repair system. Engine bearings were heavily worn and most likely reused during engine rebuild. Engine was advertised with a set of Brian Crower degree camshaft and they turned out to be Brian Crower degree camshafts.

Stock valve springs and retainers used with high lift camshafts. Cylinder head was completely stock with worn intake and exhaust valve guides. All valve guides were replaced and exhaust converted to 6mm stems, in lea of standard 7mm stems. Valve guides honed using a Goodson diamond hone and seats recut using a Serdi cutting system.

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All valve springs validated using a Rimac valve spring tester. After final assembly camshafts were degreed as per manufacturer instructions. This is critical to do since both the block and cylinder head were machined, affecting final valve and ignition timing.

Nissan SR20DE Engine Build Up - Project Low-Buck SR20DE, Part 3

How much did all this cost? Love to hear back with some information. The engine will require extensive work and maintenance. Regards, Pavel. Could you please send me information as well. Hello Allen, We sent you an email with additional information.

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Thank you for the inquiry. Regards, PRE team. Can you give pricing on similar build and or other build options? Also info on shipping if any? Thank you. Hello Jo, Thank you for the inquiry.

We are sending you an email with request for additional information.With its 2. One of the biggest weaknesses the SR20 has is the valve train design. Surely the engineers at Nissan never anticipated the SR20 would turn into what it has, being the go to engine swap for drifters and circuit racers looking for an affordable factory turbocharged 4-cylinder engine.

The valve train consists of dual overhead camshafts that ride on top of a rocker arm with any slack between the cam and the rocker arm being taken out by a hydraulic lifter fed by oil pressure.

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The rocker arm comes from the factory with a single guide shim that sits on top of the valve stem and holds the rocker arm in place from sliding side to side. The other valve that the rocker arm actuates only has a flat shim that is used to level the rocker arm between the two valves so that the rocker arm is not sitting crooked on the two valves it is opening.

When RPMs increase the rocker arm moves at an incredible speed up and down. When this happens the flat shim can be thrown out of the retainer it sits in and then the rocker arm is being pressed down crooked by the camshaft and is no longer level. This can either result in a broken rocker arm or the rocker arm getting dislodged entirely from its position.

Below is a picture of the OEM rocker arm and shim setup.

sr20det

One solution to this predicament is modifying the rocker arms to accept dual guide shims. This modification will help keep the rocker arm in its place in those instances where the hydraulic lifter is not able to keep up with the high RPMs and the opening and the up and down movement of the rocker arm. The dual guide modification is relatively straight forward and can be done with the engine still in the car.

To prepare for the installation, the only part you will need are 8 dual guide shims available from Nissan part number J00 and a tool to measure the valve stem heights with the shims in place to make sure the two are sitting flat.

Once the camshafts have been removed the rocker arms are free and can be removed as well. Be sure to inspect your rocker arms for any serious wear and replace them if necessary. With the rocker arms removed you can see the guide shim and the flat shim. With the rocker arm removed you can begin the modification process to the rocker arm. You can see how the rocker arm has been specially machined on the side that uses the guide shim, this is what you are trying to replicate.

There are a few ways to go about this but the best way is to first make a mark on the rocker arm as pictured below and get out a new sharp cut-off wheel and a rotary tool. Start slowly removing material from the line down to where the rocker arm sits on the shim. You want this as flat as possible without any curvature in the cut. Cut slowly and measure often.

You want the width of area on the rocker arm you are removing material from to be no thicker than 5mm and flat all the way across the face where you removed material. When you feel you have the rocker modified to fit the guide shim, place the arm of the rocker arm in the shim and make sure it fits. With the rocker arms all modified, place the new guide shims into the area of the retainer where you removed the flat shims.

This is where the special tool comes into play. We simply sacrificed a hydraulic lifter and welded a rod into it that allows us to attach a dial gauge to.

As mentioned previously you need to make sure the rocker arm sits flat across the two shims. The only way to properly do this is to measure the height of one guide shim, zero the dial gauge out, move it over to the other guide shim and you will see the difference between the final height of the shims.When it comes to Japanese sport compacts, an engine's success stems from its design, performance, consumer embrace, and in our world, aftermarket support.

For Nissan fanatics, the venerable SR20 engine is a four-cylinder favorite. This versatile mill was produced for over 13 years in practically every configuration imaginable; from naturally aspirated and forced-induction, to all three driveline options: front-wheel, rear-wheel, and all-wheel drive.

At a time when drifting matured from an underground and illicit style of driving in Japan to a mainstream form of motorsport in the U.

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Add to this the extensive aftermarket support already offered by Japanese tuners and performance-minded manufacturers, and the performance ceiling rises substantially.

The SR engine family comes in a variety of displacements and cylinder head technologies. So what's the big deal about these engines? They're factory turbocharged, have power potential twice that of stock output with factory internals and, thanks to the aftermarket, can be built for even greater power potential.

Nissan engineered its turbocharged, all-aluminum SR20DET engine with a square, 86mm bore and 86mm stroke dimension, which is favored for its balance of torque and horsepower output. The block features a closed deck with alloy cylinder liners and each cylinder has an under-piston oil sprayer to help maintain piston temperatures. Up top, the valve cylinder head features chain-driven, dual overhead camshafts that permit independent adjustment of camshaft timing when aftermarket adjustable cam gears are installed.

The cams lift the valvetrain by way of rocker arms with hydraulic valve lifters, the benefit of which is reduced maintenance, since they constantly and automatically adjust for valve clearance. A single throttle body regulates the incoming air charge that pressurizes the aluminum intake manifold.

As the air is distributed to the intake ports, side feed, high-impedance fuel injectors spray atomized fuel into the combustion chambers. A coil-on-plug ignition system delivers precise spark timing for optimal combustion and performance. Over the course of its production life, the SR20 experienced an evolution of small changes that distinguish each generation Nissan released.

These engines came with a "High Port" cylinder head that relied on non-variable timing camshafts and offered excellent airflow from the factory, making them desirable as a performance option that did not require heavy port work. This engine produced horsepower in stock trim but could support approximately hp safely on a stock bottom end, the right combination of bolt-on parts, turbo upgrade, fuel delivery improvements, and calibration.

This engine first appeared in the S14 Silvia at the end of This engine, characterized by its unusually shaped valve cover, earned it the nicknames "Notch Top" and "Slant Top. Calibrated with the VTC on the intake camshaft, the low port head offered improved response while delivering greater peak power compared to the previous SR20 engines.

With boost supplied by a larger, journal bearing Garrett T28 turbocharger, stock output increased to hp. InNissan Motorsports released a limited edition called the R. This run of only 30 units generated hp and sported a host of Nissan Motorsports performance upgrades to complement the higher engine output. For this engine, Nissan eliminated the "dumb" coils with the external igniter in favor of "smart" coils with built in igniters.

An improved engine management system regulates the fuel delivery and ignition timing to produce hp. What gives the SR20 such potential and staying power? Aftermarket support. Nissan started producing this engine inand despite ceasing production of this engine with the model year S15 Silvia Spec R, the aftermarket continued to support each of these variants with performance parts that have continued to release even to this day.

sr20det

From the basic bolt-ons to rotating assemblies, stroker kits and full cylinder head tuning, options for tuning are plentiful. After you've made the basic intake, downpipe, and exhaust upgrades, prepare to invest in engine management solutions for the more advanced bolt-ons like intake manifolds and front-mount intercoolers. The importance of an aftermarket engine management system becomes paramount once you've upgraded injectors, fuel pump, ignition system, exhaust manifold, and turbocharger, followed by an increase in boost pressure.

If you've taken the valve cover off to upgrade the camshafts, it's a good idea to add rocker arm stoppers to keep the rocker arms from being flung at high engine speeds. If you're hardcore, ditch the hydraulic valve lifters in favor of solid lifters. Since solid lifters do not move, they reduce the chances of the rocker arms being flung from their positions.

The only caveat is that they're a pain when it comes to dialing in the valve lash. Even so, many argue that the effort is worthwhile, since they won't likely need to be adjusted for quite some time. Depending on the parts you choose and the type of fuel you're running, these upgrades could get you anywhere from the high to-midhp range.

If you blew your SR20 engine or are just ready to step up to the next level, you're ready to upgrade your engine internals. The alloy cylinder liners of the SR20 can only be over-bored 0.


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