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944 vs 968 motor which is better?

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Old 12-29-2007, 09:52 AM
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dillon410021
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Default 944 vs 968 motor which is better?

I will be putting a new engine in my 944 and can't decide what engine to put in. A 944 turbo motor or the cool looking 968 motor. Anyone have any of the 2 engines for sale or tips of which one is better.
Old 12-29-2007, 10:03 AM
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special tool
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The 968 engine is MUCH better.

However, OBVIOUSLY, it is easier to make more power from the 2.5 turbo engine than an NA 968.
Old 12-29-2007, 10:45 AM
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You need to tell us what you want to do with it and what you consider 'better'?
Old 12-29-2007, 02:30 PM
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RajDatta
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You will very quickly cap out on a 968 motor as far as power is concerned. You can almost double the factory hp of a 951 for about the same price as getting 50 extra hp on a 968 motor.
I am a boost junkie and nothing beats the rush of a turbo. I own a 968 turbo and a 968 NA and the NA feels like a dog compared to the turbo. There is no comparison.
Raj
Old 12-29-2007, 02:51 PM
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Fishey
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968 Motor > 951 Motor
4V > 2V
3.0L > 2.5L
Windowed Block > Non-Windowed Block
Siamesed cylinders > Open Cylinders
Later Oil pan > Early Oil Pan
Old 12-29-2007, 06:07 PM
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ehall
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Originally Posted by Fishey
968 Motor > 951 Motor
4V > 2V
3.0L > 2.5L
Windowed Block > Non-Windowed Block
Siamesed cylinders > Open Cylinders
Later Oil pan > Early Oil Pan
A FORTUNE to properly turbo charge a 16 valve 968 to get the power you get from a healthy 951 engine with bolt ons.

...but I guess you are an expert so I'll defer to you.
Old 12-29-2007, 07:08 PM
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Originally Posted by ehall
A FORTUNE to properly turbo charge a 16 valve 968 to get the power you get from a healthy 951 engine with bolt ons.

...but I guess you are an expert so I'll defer to you.
Ehall - the 968 is a better engine in about 9,867 ways.
Not even close.
It is an evolution from Porsche as well....

You can (and Porsche did) turbo the 968.
I believe using the 968 head, the 968 engine has VERY high limits. Like Supra high.
Old 12-29-2007, 07:17 PM
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evil 944t
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Originally Posted by special tool
Ehall - the 968 is a better engine in about 9,867 ways.

I believe using the 968 head, the 968 engine has VERY high limits. Like Supra high.
Like higher than Supra limits.
Old 12-29-2007, 07:23 PM
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Do tell?.........................
The following users liked this post:
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Old 12-29-2007, 07:28 PM
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special tool
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Originally Posted by evil 944t
Like higher than Supra limits.
Listen, I'm going to give all these talkers a year or 2 to fool around with the 968 turbo while I finish the BMW turbo.

Then I'll be coming........
Old 12-29-2007, 07:31 PM
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dude, its going to take you 2 years to send me the oil pan.. That will give us plenty of time to hunt your **** down.
Old 12-29-2007, 07:44 PM
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Sounds like a challenge to me, sort of gauntlets being thrown down around the place? I'm going to watch this space.
Old 12-29-2007, 08:30 PM
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Originally Posted by ehall
A FORTUNE to properly turbo charge a 16 valve 968 to get the power you get from a healthy 951 engine with bolt ons.

...but I guess you are an expert so I'll defer to you.
Why would you want to turbo charge a 3.0L+ I4?
Old 12-29-2007, 08:48 PM
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ehall
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Originally Posted by special tool
Ehall - the 968 is a better engine in about 9,867 ways.
Not even close.
It is an evolution from Porsche as well....

You can (and Porsche did) turbo the 968.
I believe using the 968 head, the 968 engine has VERY high limits. Like Supra high.
and an equally high price tag to go with it. In stock form or with bolt ons, the 951 makes more power for less money. That was my point. A 16v 3 litre turbo is obviously the better for potential power, but at what cost? For the money, the OP would do better transplanting a 951 engine then in transplanting the 968 engine, if power for cost is his object. If not he may as well keep his current engine.
Old 12-29-2007, 10:21 PM
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Fishey
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Originally Posted by ehall
and an equally high price tag to go with it. In stock form or with bolt ons, the 951 makes more power for less money. That was my point. A 16v 3 litre turbo is obviously the better for potential power, but at what cost? For the money, the OP would do better transplanting a 951 engine then in transplanting the 968 engine, if power for cost is his object. If not he may as well keep his current engine.
Only to a point.

Remember, at some point you will find that you have nothing stock on your 951. Custom Exhaust, Turbo, EMS, Intake, Fuel Rail, Etc and alot of people on this forum actually are like this with there 951. It doesn't make sense with the motor unless you are looking to class race it. Also, as far as cheap power I have already proven the cheapest and fastest way to make power it just won't last you long. Now, in terms of the best motor setup turbo's are just not practical for power on small displacement motors for anything other then roll racing (Note: Supra). Anyone taking a 951 to the track is turning down boost or running a smaller turbo at a reduced power output to reduce lag and improve reliability. The cost of making 600whp on the track with a 2.5L 951 motor is astronomical sure ST made 600whp look at the money invested just to do that also look to understand that he isn't tracking the car at the 600whp level lap after lap.


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