johnu

I am thinking about purchasing a 951 this spring/summer...if this snow ever melts!
What kind of power could you get from a 951 with some relatively simple mods?
Thanks
John

azbanks

Simple means different things to different people.
Do you want simple to install, low cost, simple to tune, etc.

Here is what I had on an 86 951.
Rogue MAF kit
SFR stage 1 headers
Vitesse stage 2 turbo
SFR 3" downpipe
3" full exhaust

= 323 RWHP & 326 RWTQ

These cars are a slippery slope. Some might call it an addiction.

FrenchToast

900 hp

You may find stock power is ample enough.

johnu

Thanks azbanks. How much money was that setup?

eman930

He's probably got 5-6K in it

johnu

Somehow I doubt it

FrenchToast

Stock would be enough for me. But as noted, turbos are a slippery slope. Do a simple mod, and you'll be yearning for more.

As for 900 hp, someone did turbocharge a 968 block to produce 900hp. Didn't last very long, about the length of a PCA Sprint Race actually. I believe the car was somewhat infamously banned from PCA Club Racing (not for the engine, but other reasons rather). This was many, many years ago with a car called Doom.

PCA Club Racing used to have quite a bit of rulebook-interpreters, seriously fast cars with serious technology. A whole other era, almost.

It seems pretty tame these days, but can't really say for sure. There are still some quick cars of course, but they don't seem so wild and crazy. Perhaps it was their cloak of mystery, something the Doom car was quite known for, which seemed to make them 'wilder.'

The current prototype class allows those few to run bonkers cars, I think usually non-competitively because they're the only one in their class.

Dougs951S

This is a long and storied topic, so I'll keep it short. 300 rwhp is literally a tune + boost controller + fuel pressure regulator away. That's convenient because that's also about all the stock turbo has in it, and getting really close to maxing out the stock fuel injectors and stock air flow meter.

You can then spend a whole lot of money in a whole lot of different ways to get anywhere from 320-400 rwhp before you need to really tear into the motor and by that point all hope is lost, you are a boost addict.

I'm ~400 rwhp and I deliberately have not kept track of how much money I've flowed into my motor...probably too much for 400 rwhp, should have just bought a corvette lol.

azbanks

About $5000 if you are patient and find good deals on RL, other forums, ebay, etc. About $8000-10,000 if you buy everything new.

Sixline

How much boost?

Also, surprised no one linked this.

https://rennlist.com/forums/944-turb...ful-links.html

johnu

Thats what i was looking for.


Thanks for the link



John

raleighBahn

You will spend a lot of money post-purchase outside of upgrades, even if the car is well sorted. The more you modify, the more maintenance it will need. Increase HP by 50% and the law of energy not being created or destroyed but simply transferred comes into play. And in this case transferred down a quarter century old drivetrain.

If you have a horsepower number in mind, and it's north of 300, think about a different car (as Doug implied, a vette) - 928, etc. I have a theory that if most 951 owners had their money back after three years of modifications, they could have easily just backed a new cayman S off the lot as well.

If you're just a 951 fan and going to do it anyway, well then welcome.

JimV8

Without appearing flippant but the question of how much power, should include how long should the engine deliver said power before a tear down. Boosting puts big stresses on everything. So there's a proportionality between power and preparation. If you crank up the boost without looking after the other stuff you'll find the answer to the first question as not very long.

johnu

I have owned a 928s4 for two years now and absolutely love it.
I have always wanted a 944 since I was a teenager in the 80s. I just want to ensure that it could keep up with more modern cars. I think 300 hp would be pretty sufficient.

Dougs951S

The "big picture" in my mind is that, as everyone will tell you, something about these cars makes them punch well beyond their weight especially on highway pulls. It may be "only" 300 rwhp but a well running 300 rwhp 951 will have a fat, wide powerband and gobs of torque pretty much everywhere in the rev range that really belies the fact that its only 300 hp.