2.0 or more, Bigger is better Options

[914_teener]

You need a sheet metal shrinking press and an English Wheel.

I love the the Emerson quote:

"A brave man is no braver than an ordinary man; he is just braver for 5 more minutes."

Stay brave.

[rbzymek]

Thank you, a "new" 2 liter basket case motor is on the way from Kentucky. Back to the original post: 2056 with some head work might be the order of the day.

Will the L jet keep up with things or twin Webers. My gut is telling me to try the stock system

You can run a 2056 with L-Jet with slightly larger injectors but if you start with a 2.0 engine it will have a D-Jet system. I would recommend FI for drivability reasons.

[930cabman]

Thank you, a "new" 2 liter basket case motor is on the way from Kentucky. Back to the original post: 2056 with some head work might be the order of the day.

Will the L jet keep up with things or twin Webers. My gut is telling me to try the stock system

You can run a 2056 with L-Jet with slightly larger injectors but if you start with a 2.0 engine it will have a D-Jet system. I would recommend FI for drivability reasons.

Brave or crazy? approaching retirement a project was in order. The hulk came with a 1.8 with L jet, a 1973 2.0 is on the way from an Ebay purchase, not sure if it's D jet or? Is there a good source for anybody who opens up the heads for improved flow?

thanks all, I am very new to the 914 life and grateful for the assistance/encouragement

[rbzymek]

[quote name='930cabman' date='Jan 5 2021, 04:57 PM' post='2880714']
[quote name='rbzymek' post='2880704' date='Jan 5 2021, 04:11 PM']
[quote name='930cabman' post='2880687' date='Jan 5 2021, 03:36 PM']
Thank you, a "new" 2 liter basket case motor is on the way from Kentucky. Back to the original post: 2056 with some head work might be the order of the day.

Will the L jet keep up with things or twin Webers. My gut is telling me to try the stock system
[/quote]

You can run a 2056 with L-Jet with slightly larger injectors but if you start with a 2.0 engine it will have a D-Jet system. I would recommend FI for drivability reasons.
[/quote]

Brave or crazy? approaching retirement a project was in order. The hulk came with a 1.8 with L jet, a 1973 2.0 is on the way from an Ebay purchase, not sure if it's D jet or? Is there a good source for anybody who opens up the heads for improved flow?

thanks all, I am very new to the 914 life and grateful for the assistance/encouragement
[/quote)

Len Hoffman is the head resource most people use. Others can advise on the changes required for your 2.0 D-Jet system. I used the 1.8 L-Jet system on my 2056. The L-Jet system uses a vane meter to measure air flow. The D-Jet has a pressure sensor and is an analog speed density system.

[930cabman]

I am leaning towards the L jet, measuring air flow sounds better than measuring pressure. I have been researching L jet and D jet systems, they appear similar. Was the L jet used on 1.8 engines and D jet used on 2.0 liter engines?

How would I contact Len Hoffman.

Raby speaks to the air flow, but his stuff is out of my price range.

[930cabman]

Got lucky again today, rear floor/firewall on passenger side is reasonably clean. I will be removing most of the "seam sealer" as rust is hiding underneath.

It's better to be lucky than good, but being good doesn't hurt

[Superhawk996]

Don't you just hate when you punch a hole for a rosette weld and then it hangs in the air with noting to weld to?

I thought I was the only one that did that! (IMG:style_emoticons/default/laugh.gif)

[bbrock]

Was the L jet used on 1.8 engines and D jet used on 2.0 liter engines?

AFAIK that is right. D-Jet on 1.7 and 2.0L and L-Jet on 1.8L. I believe the L-Jet also has an altitude sensor which would be a big plus where I live. I've never heard the reason they chose two different systems among the 3 engine sizes. Actually 3 systems I guess, if you count the dual Solex carbs on the Euro 1.8s.

[930cabman]

Was the L jet used on 1.8 engines and D jet used on 2.0 liter engines?

AFAIK that is right. D-Jet on 1.7 and 2.0L and L-Jet on 1.8L. I believe the L-Jet also has an altitude sensor which would be a big plus where I live. I've never heard the reason they chose two different systems among the 3 engine sizes. Actually 3 systems I guess, if you count the dual Solex carbs on the Euro 1.8s.

I am looking into going the 2056 route with 1.8 case, 2.0 crank/rods, (heads are undecided) and L jet.

Yes/No?

[mepstein]

Cases are all (basically) the same. Any year works fine.

[VaccaRabite]

If you are going to use LJet then you need to use 1.7 or 1.8 heads.
This is not an issue, as the heads can be built to your specs. 2.0 heads won't work as the studs for the L-jet will be in the wrong place.

Zach

[930cabman]

If you are going to use LJet then you need to use 1.7 or 1.8 heads.
This is not an issue, as the heads can be built to your specs. 2.0 heads won't work as the studs for the L-jet will be in the wrong place.

Zach

Thank you, I am new to the 914 life and can use all the help I can get. The rusted hulk came with an EC 1.8, and recently found a GA 2.0 on Ebay, it's on the way. For simplicity I am thinking running the L jet with a big bore kit. I am seeing many of these are junk. The $3.5k pistons/cylinders are not an option for this build. Hopefully someone else makes a decent product

[914_teener]

If you are going to use LJet then you need to use 1.7 or 1.8 heads.
This is not an issue, as the heads can be built to your specs. 2.0 heads won't work as the studs for the L-jet will be in the wrong place.

Zach

Thank you, I am new to the 914 life and can use all the help I can get. The rusted hulk came with an EC 1.8, and recently found a GA 2.0 on Ebay, it's on the way. For simplicity I am thinking running the L jet with a big bore kit. I am seeing many of these are junk. The $3.5k pistons/cylinders are not an option for this build. Hopefully someone else makes a decent product

There are no real diffetences with the EC case and the GA cases as previously posted.

[bbrock]

If you are going to use LJet then you need to use 1.7 or 1.8 heads.
This is not an issue, as the heads can be built to your specs. 2.0 heads won't work as the studs for the L-jet will be in the wrong place.

Zach

I'm just curious, but will the 2.0 intake runners not work with L-Jet? I've never seen an L-Jet system in person so don't have a clue.

[ClayPerrine]

If you are going to use LJet then you need to use 1.7 or 1.8 heads.
This is not an issue, as the heads can be built to your specs. 2.0 heads won't work as the studs for the L-jet will be in the wrong place.

Zach

I'm just curious, but will the 2.0 intake runners not work with L-Jet? I've never seen an L-Jet system in person so don't have a clue.

Zach is wrong on this. (Sorry Zach). I have run L-Jet with 2.0 heads. But the 2.0 intake runners have to be tweaked to match the 1.8 plenum, and you have to run slightly longer intake boots between the plenum and the runners. But it all fits and works well. I know there are others on here that have done this too.

For a 2056, you are going to want the Vanagon throttle body mod, and the bigger Nissan 280ZX injectors. The 1.8 throttle body is way too small for a 2056, and will choke the engine down.

If you run 1.8L heads, you can still build a 2056. Just have 2.0 valves put in the 1.8 heads. The spark plug angle is the only real difference in them. Yes, the plug angle makes the engine perform better, but the 1.8L heads don't suffer from cracking between the valve seat and the spark plug hole. So you give up a little in the HP department, and get some long term reliability.

Clay

[930cabman]

If you are going to use LJet then you need to use 1.7 or 1.8 heads.
This is not an issue, as the heads can be built to your specs. 2.0 heads won't work as the studs for the L-jet will be in the wrong place.

Zach

I'm just curious, but will the 2.0 intake runners not work with L-Jet? I've never seen an L-Jet system in person so don't have a clue.

Zach is wrong on this. (Sorry Zach). I have run L-Jet with 2.0 heads. But the 2.0 intake runners have to be tweaked to match the 1.8 plenum, and you have to run slightly longer intake boots between the plenum and the runners. But it all fits and works well. I know there are others on here that have done this too.

For a 2056, you are going to want the Vanagon throttle body mod, and the bigger Nissan 280ZX injectors. The 1.8 throttle body is way too small for a 2056, and will choke the engine down.

If you run 1.8L heads, you can still build a 2056. Just have 2.0 valves put in the 1.8 heads. The spark plug angle is the only real difference in them. Yes, the plug angle makes the engine perform better, but the 1.8L heads don't suffer from cracking between the valve seat and the spark plug hole. So you give up a little in the HP department, and get some long term reliability.

Clay

I am gaining an education in many things 914, thank you all contributors.

In our inventory pile is a stock 1.8 (minus cylinders) and a 2.0 complete. I will be inspecting both cases and choose the closest to spec. Hopefully the 2.0 crank and rods are serviceable. A new set of pistons/cylinders is a given. Is a mild increase in lift/duration desired for our engines? Is the geometry (plug angle) different from the 1.8 vs the 2.0 head? I had thought about oversize valves/seats. I have been researching hopping up the L jet system.

[mepstein]

It might be worth it to you to bore out the 2.0 cylinders and order pistons. The metal on the old mahle cylinders is better than many of the newer aftermarket offerings. It’s not always cheaper than new but some of the new cylinders are known for being off spec.

I just got two done for my motorcycle and it was $150 for the pair.

[930cabman]

It might be worth it to you to bore out the 2.0 cylinders and order pistons. The metal on the old mahle cylinders is better than many of the newer aftermarket offerings. It’s not always cheaper than new but some of the new cylinders are known for being off spec.

I just got two done for my motorcycle and it was $150 for the pair.

I am assuming they are all cast iron, but the German stuff is probably better in quality. The cylinders I have from the 1.8 are cracked/broken unservicable. Whomever took it apart must have used a bfh. I am hoping the cylinders coming with this new 2 liter are ok, if not I hope used cylinders are available

[Porschef]

[/quote]


For a 2056, you are going to want the Vanagon throttle body mod, and the bigger Nissan 280ZX injectors. The 1.8 throttle body is way too small for a 2056, and will choke the engine down.

If you run 1.8L heads, you can still build a 2056. Just have 2.0 valves put in the 1.8 heads. The spark plug angle is the only real difference in them. Yes, the plug angle makes the engine perform better, but the 1.8L heads don't suffer from cracking between the valve seat and the spark plug hole. So you give up a little in the HP department, and get some long term reliability.

Clay
[/quote]

What Clay said...
This is the set up I’m using, as are a couplafew others (Jim Hoylamd, Worn and some I’m forgetting)

I’m using 912 injectors, an enlarged throttle body, and a 123 distributor. Car runs great, the first 30 seconds notwithstanding (maybe a idle speed lever is in order)

The distributor and throttle body made the biggest impact

HTH, Joe

[Dave_Darling]

How many guys when in this deep delete the heat tubes? This 914 will never be driven when it's cold.

I say keep them. Even if it isn't cold where you are, it's good to be able to defog the windscreen on occasion. And it's a whole lot harder to put the tubes back in after you're finished with the longs!!

I am leaning towards the L jet, measuring air flow sounds better than measuring pressure.

The above is right; you can adapt the 1.8's system to fit on a 2.0 motor. Or find 912E parts; those used a 2.0 914 motor with L-jet. But good luck with that since they only EVER made 2099 of them.

One thing I would strongly suggest: Find a wide-band O2 meter to make sure it doesn't run lean under any RPM and load combination. You really do not want to run the engine lean.

How would I contact Len Hoffman.

https://newsite.hamheads.com/

You can find the heads he designed at the Type 4 Store. Not cheap, but they are brand-new castings.

https://lnengineering.com/type-4-store/cylinder-heads.html

--DD