Any possible advantages of the 2.0 over the 2.5L ? - Porsche 718 Forum
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post #1 of 61 Old 03-21-2019, 10:37 AM Thread Starter
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Any possible advantages of the 2.0 over the 2.5L ?

Other than cost and (minimally ) better milage , Can you think of any advantages the 2.0L has ?

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post #2 of 61 Old 03-21-2019, 10:53 AM
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The opportunity to have 18" tires for a different ride and less wheel damage. Less regret if/when Porsche introduces a 6 cylinder. A platform for a lower optioned non-track oriented fun car (if one gets the 2.5L, one may be tempted to justify additional performance options to "go with" the bigger engine). I'm conflicted too....
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post #3 of 61 Old 03-21-2019, 11:34 AM
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I bought a base (2.0l) Cayman off the dealer's lot and considered this question after the fact wondering if I'd done the right thing. My conclusion was that I had made the right choice. Here are some of my thoughts, some less important than others, some possibly just rationalizations:

The S model is marginally heavier though probably not enough to notice. Some of that will be from other hardware, I suspect. The S has other features that I really don't need, would rather not have. On the other hand, my car has the 20" wheels...

At the EPA mileage estimates (which I have found to be reasonably accurate in my usage), the difference in price is enough to pay for all the gas you will use through at least half and maybe even all the life of the car. The gas savings from the higher gas mileage contributes even more.

At the EPA mileage estimates, the 16gal tank on the S has a similar single-tank range as the 14gal tank on the base model.

In theory, in the smaller engine there should be lighter loads on the main, con rod, and wrist pin bearings, and therefore possibly longer life. Of course if Porsche engineers compensated by using smaller bearings, this point doesn't hold. You'd have to ask a mechanic about this, and I suspect the engines haven't been out long enough for any real data to exist.

In theory the smaller engine might be able to rev more easily. Of course that's just a traditional argument that may not apply at all in practice.

You (or at least I) would have a hard time telling the difference between the two engines in normal use. Personally I have almost no opportunity to exercise mine to its fullest "potential" and when I do it wouldn't matter doodleysquat whether I had the extra oomph or not. It gets going real fast real fast.

Other folks will have different opinions, of course. If I had bought the S model I would not be able to justify it. Some would say I can't justify having bought a 718 Cayman at all, but that's a different discussion!
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post #4 of 61 Old 03-21-2019, 11:57 AM
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Iím more than happy with my 2.0 litre.

The savings on the fuel bill are definitely worth it.
Fuel in the U.K. is very expensive, so itís not painful when itís time to fill up.
I regularly get over 400 mile range out of my extended capacity fuel tank. Have even seen 500 mile range on long motorway journeys.
The 2.0 litre is all you need for street use.
You will only see the benefits of the 2.5 litre on the track.
I spent the money I saved by ordering the 2.0 litre, on specking the car exactly how I wanted it.
Also love the 18Ē Wheels give a really good ride, less prone to damage from pot holes and much less risk of kerbing the alloys.

Oh and donít forget it will be cheaper to insure as well.
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post #5 of 61 Old 03-21-2019, 12:25 PM
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This time of year, with all the potholes, I love the 18" wheels/tires and I also love the wheel design. I do have the wheel and tire insurance, so I could have gotten the 19 or 20" wheels/tires. I bought the base model because I didn't intend to do much, if any, tracking, although there are aesthetic and performance things that would be nice but beyond my needs. I have more power and performance than I could possibly use for twisty back-roads. Mine is a toy and not a DD. My signature lists what I added and I believe I have the perfect sports car to do what I want.
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post #6 of 61 Old 03-21-2019, 12:54 PM
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Cost, oval tailpipe and not getting the weird grey tachometer dial was my main motivations for ordering the base 2.0 over an S 2.5.


I also have the theory that getting the less powerful engine will be more fun for road use, as I will get to use a higher percentage of the power of the engine.
And if you compare the 2.0 and 2.5 based on specific power output, the 2.0 is clearly the better engine
Which engine is the best for you will of course depend on how you will use the car.
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post #7 of 61 Old 03-21-2019, 02:59 PM Thread Starter
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Quote:
Originally Posted by jimmuller View Post
I bought a base (2.0l) Cayman off the dealer's lot and considered this question after the fact wondering if I'd done the right thing. My conclusion was that I had made the right choice. Here are some of my thoughts, some less important than others, some possibly just rationalizations:

The S model is marginally heavier though probably not enough to notice. Some of that will be from other hardware, I suspect. The S has other features that I really don't need, would rather not have. On the other hand, my car has the 20" wheels...

At the EPA mileage estimates (which I have found to be reasonably accurate in my usage), the difference in price is enough to pay for all the gas you will use through at least half and maybe even all the life of the car. The gas savings from the higher gas mileage contributes even more.

At the EPA mileage estimates, the 16gal tank on the S has a similar single-tank range as the 14gal tank on the base model.

In theory, in the smaller engine there should be lighter loads on the main, con rod, and wrist pin bearings, and therefore possibly longer life. Of course if Porsche engineers compensated by using smaller bearings, this point doesn't hold. You'd have to ask a mechanic about this, and I suspect the engines haven't been out long enough for any real data to exist.

In theory the smaller engine might be able to rev more easily. Of course that's just a traditional argument that may not apply at all in practice.

You (or at least I) would have a hard time telling the difference between the two engines in normal use. Personally I have almost no opportunity to exercise mine to its fullest "potential" and when I do it wouldn't matter doodleysquat whether I had the extra oomph or not. It gets going real fast real fast.

Other folks will have different opinions, of course. If I had bought the S model I would not be able to justify it. Some would say I can't justify having bought a 718 Cayman at all, but that's a different discussion!

This is good , I was more asking engine vs engine comparison and not a base vs S . I intend to take mine on the track , but more for fun than lap times . I wonder if the 2.0 stays cooler longer for 30 minute HPDE sessions ?

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post #8 of 61 Old 03-21-2019, 04:14 PM
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It's a shame @ZuffenHouseRules has recently jumped ship to a 99x; he is (er, was) the resident engine guru around here. His focus is the 2.5, but he knows enough about the shared architecture between the 2.0 and the 2.5 -- and the 991.2, for that matter; the 718 engine is essentially 2/3 of a current 911 engine -- to provide some insight.

I have a 2.0. It is stupid fast, particularly when the car is already in motion. IMHO, the 2.5's advantages in power and (only slightly) torque can only be exploited on a track by a very skilled driver. Unless you're going to track the car regularly, the 9k-plus premium for an S over the base model is better spent on:
- Sport Chrono (if you're getting a PDK)
- PASM
- PDLS+ headlights
- possibly PTV (this is debatable; I did without)
- Driving lessons
- Taking the S.O. who allowed you to buy your car out on dates regularly


-- Life is a journey made more exciting with a fast car. --
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post #9 of 61 Old 03-21-2019, 04:25 PM
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You have to make your car “your car”.

The 2.0 is more than enough and I suspect the C6MT 2.0T will be optimum away from a track.

Anything with a power to weight ratio around 9lb/hp is way too fast to exploit on the public road. I daily my wife’s Audi @ 10.9lb/hp and it’s so competent & over powered it’s boring, not helped by the DSG box.

718 numbers 2.0 C6MT reported to be 9.8 lb/HP, 2.5 CGTS 8.3 lb/HP.

BTW 991.2 Carrera T 8.6 lb/HP

Worth noting

MX5 14.5 lb/HP
Fiesta ST 15.8 lb/HP
VW UP GTI 21.12 lb/hp
Golf R 10.86

If you like wringing the revs out, working a gear box the 2.0 C6MT provides more than enough.

That said 991 GT2RS 6.63lb/HP.

And before anyone else rubs my nose in it, yes, I know the CGTS has better numbers that the 991.2 T.
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post #10 of 61 Old 03-21-2019, 05:13 PM Thread Starter
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Quote:
Originally Posted by Viffermike View Post
It's a shame @ZuffenHouseRules has recently jumped ship to a 99x; he is (er, was) the resident engine guru around here. His focus is the 2.5, but he knows enough about the shared architecture between the 2.0 and the 2.5 -- and the 991.2, for that matter; the 718 engine is essentially 2/3 of a current 911 engine -- to provide some insight.

I have a 2.0. It is stupid fast, particularly when the car is already in motion. IMHO, the 2.5's advantages in power and (only slightly) torque can only be exploited on a track by a very skilled driver. Unless you're going to track the car regularly, the 9k-plus premium for an S over the base model is better spent on:
- Sport Chrono (if you're getting a PDK)
- PASM
- PDLS+ headlights
- possibly PTV (this is debatable; I did without)
- Driving lessons
- Taking the S.O. who allowed you to buy your car out on dates regularly

Again , the Cayman T is starting to look more and more what I want
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