HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Turbo vs. S2

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Turbo vs. S2

Post  Bluemach1 on Thu Aug 20, 2009 10:13 am

I am actively looking for the car that will be the base of the LSx swap. I have a couple of questions.
I have gathered that a 1987 and up Turbo would be the most preferred car to swap the LS into. But is it true that the S2 has the same drivetrain (excluding engine) as the Turbo? The S2 has the same spindles / brakes as the Turbo.

So I guess the real question is, beside the engine and exterior cosmetics, are the Turbo and S2 the same?


Thoughts?

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Re: Turbo vs. S2

Post  944v8inDFW on Thu Aug 20, 2009 11:35 am

S2 Has a lower geared transmission final drive ratio numberically higher

S2 Ring and Pinion - 8:31 Final Drive - 3.875

Turbo Ring and Pinion - 8:27 Final Drive - 3.375
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Turbo vs S2

Post  968gene on Thu Aug 20, 2009 12:05 pm

Best car would be a Turbo S, if you can find one. The trans has hardened 1st and 2nd, LSd, and a cooler.
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Re: Turbo vs. S2

Post  944v8inDFW on Thu Aug 20, 2009 1:25 pm

I have beat the snot out of several late NA and Late S2 trans and never had problems. Well over 450 FPT. The major problem with the 944 trans Turbo S2 or NA is the trans mount being floppy. New, filled or solid will save lots of heartache.

A cooler factory or better always helps too with good gear oil.

Major problem with most lates that break, other than mount, they were neglected or abused far before conversion or high horsepower. Start with junk you'll end with junk Smile
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Re: Turbo vs. S2

Post  944-LT1 on Thu Aug 20, 2009 1:41 pm

exactly. Porsche says in their manuals that the pre-load of the ring and pinion needs to be re-adjusted every ~80K miles and thats just not being done by many 944 owners (or me for that matter....screw all that). So, after the tranny gets to 100K (which many are now), the mesh of the ring and pinion is sloppy.... and then snap!.....a tooth.

I also believe that the engine in the car makes a difference. I see a CRAP LOAD of 944 4 cylinders exploding these tranny's. I believe this is because of the shock of the abrupt narrow power band. With the V8, although theres alot more power, theres a long comparatively flat torque band which is less shocking to the transmission. I havent heard of any V8 conversion exploding a tranny yet. Cool

I have always used NA boxes and never blew one up. Synchros have gone bad but never actually blew one up.

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Re: Turbo vs. S2

Post  Bluemach1 on Thu Aug 20, 2009 2:03 pm

Good information.

So S2 and Std. Turbo about the same. Just need to find a S2 with LSD. (assuming it comes down to $ and selection).

If I get S2, is the Turbo chin spoiler a bolt on?

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Re: Turbo vs. S2

Post  944v8inDFW on Thu Aug 20, 2009 2:04 pm

The LATE s2 has the same body work as the Turbo, so yes it is a bolt on

I personally like the NA / S2 Ratios for a street car other than its limitation on the top end. the right S2 if the motor is not all the way broke just the 16v head can offset the cost of the conversion
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Re: Turbo vs. S2

Post  Bluemach1 on Thu Aug 20, 2009 2:25 pm

Funny thing.. Not all of my replies are showing up...

Anyway, I agree. This is a street machine and I dont think that changing 5th gear would be worth the MPH improvement.

I can find S2's and Turbos that are not running. Only thing is, that I believe in California I have to pass smog to register it when I buy it. I dont know if I can register non-op and then try to go through the inspection after the converion and pass.

I need help on that whole process anyway..

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Re: Turbo vs. S2

Post  Bluemach1 on Thu Aug 20, 2009 7:51 pm

Now to really throw a curve....

The 968... One for sale locally. Six speed. dont know if it is LSD yet or not. Is the swap exactly the same as on the 944?

Scares me a little as the production runs were so low. 944 = tons of cheap doner cars...

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Re: Turbo vs. S2

Post  Admin on Thu Aug 20, 2009 7:52 pm

I don't know about everyone else, but I went through 2 NA transmissions in a matter of 2 weeks. I never dumped the clutch, just hard acceleration in second gear and third. I don't know what the real power of my motor is, but I have the old puny Smile LT1 , stroked to 383, heads port and polished, intake port matched and polished, The biggest cam that crane makes, BBK 58mm throttle body and 40 lb injectors. all tuned by PCMs for less, Maybe it's the tunning, I never broke any thing till they did that damb tunning thing...... Very Happy

I gave with the stock stuff and really bastardized my 944 , I installed a built 700r4 and, the first that I know of in a Porsche, a Viper rear end.
Now I have only broken CV axle cages! Very Happy

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Re: Turbo vs. S2

Post  968gene on Thu Aug 20, 2009 7:57 pm

Bluemach1 wrote:Now to really throw a curve....

The 968... One for sale locally. Six speed. dont know if it is LSD yet or not. Is the swap exactly the same as on the 944?

Scares me a little as the production runs were so low. 944 = tons of cheap doner cars...

968 can hold 400+ hp...however, they are 6sp with less than ideal gearing for a high torque V8. They will also require different axles left and right. Not a direct swap out. Turbo S is still the best V8 swap bet....
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Re: Turbo vs. S2

Post  Bluemach1 on Thu Aug 20, 2009 8:06 pm

I hear you on the Turbo S but I cant justify the the cost of that as the base for a LS swap. Need to aim a little lower. I am trying to keep my entry point under $5000 for the car. There is a pretty good selction for that klind of money in Nor Cal. Turbo S' are still hold their value.

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