sushisushi

I was wondering if anyone had had there 964 dyno'd to see how much bhp you still had left?

We all know a 964 should have about 250bhp new but 20 years on how much is left?

Of course im not interested in heavily modded cars just well looked after standard ones.

964russ

278 bhp with re-map, original engine, 78k.
Was 256 b4 remap.

sushisushi

256 before remap? That's more than it had straight out of the factory!? How come?

What chip did you use?

Jimjacqmx5

It seems that Porsche is very conservative with their power figures.
We often dyno cars to check compliance for class racing in Porsche Club here in Australia and many owners are surprised when their stock car is running more power thanofficial Porsche figures.

My 964 C2 with 130k's just dynoed 205kw (crank) with a cup pipe and chip.
Thats around 20kw above 'stock.'

It seems you may be interested in simple mods by your chip query.
I have an accellracing chip from Steve in UK. Great guy.
Danske cup pipe.

These two simple mods with a KN panel element usually give around 200-210kw depending on the car. A cam upgrade with these should give you around 225kw or 300bhp.

Further gains can be made by gong to a 100cell CAT if keeping stock layout exhaust or better still swapping exhaust for a header, single muffler system.
Funny thing is, the power mods gained me around a second a lap around most circuits, suspension set up gained me three plus seconds. Just goes to show that power is a lot less important than set up.

Hope this helps.

shockm

304 to the wheels.......sorry, had to.....

kdfwagen

alot of dyno's arent very accurate as well, I heard mustang dyno's can over value your horse by 10-20!? so something like 5whp over stock could easily just be a "inaccurate reading". It would be interesting to take your car to several differnt brands of dynamometers to see the differances.

964russ

How come?
My mech said that 64,s dont normally loose hp with age. A good engine will give good power.
My car has no cat+techart primary.
The re-map was done by wayne @chipwizzards.
Ive had the flash tested on 2 different rollin roads and it allways kicks out the same (give or take).

At santa pod last week it was a clear second and a half quicker 1/4 mile than a completley standard 64!
And quicker than a 993c2s, that is supposed to have more power!

Jimjacqmx5

I'm with you Russ. It is amazing the diffrence the extra power with a chip and exhaust makes on the road. It's only a 10% power increase but i guess it's the area under the power graph that counts, ie more power everywhere. I know when i help out and instruc t at driver training days tht i hop into a stock 964 and it feels so flat in comparison.
Can't wait to put my Dougherty camhafts in next week and get another 10% of grunt!

Marc Shaw

227 bhp at the wheels which works out to about 285 bhp at the crank (figuring on a 25% loss through the drivetrain on a C4).

This was a few years ago before the Vitesse intake and Fabspeed exhaust so I expect it is higher now.

....but I guess you are not interesting in my car.

Marc

Strega(UK)

275 bhp with 120k very hard miles
Has hot film, chip and custom exhaust.

Was 296bhp but as said hard miles, it blows smoke on start up and on hard accell!!

sushisushi

I think it's the visual mods im not bothered about, a chip, suspention, exhaust and air intake are all fair game to me!

Seight

Two months ago I had a full engine rebuild. Top and bottom end at JZM in the UK. I can tell you that although it runs a bit smoother, there is no significant difference in power. Having said that I had the work done due to multiple excessive oil leaks, and the bits that I had replaced internally over and above a standard rebuild were not power-affecting.
So, unless you are down on compression, or blowing through your valves etc.. ie if your engine is running well, there's no reason to suspect it has lost much power from new in my opinion.

Cheers
Alex

cobalt

Leak down and compression are a good indication of power. If you have solid numbers there your HP should be around stock no mater how may miles or age.

Simple bolt up 100cell cat, magnaflow muffler and K&N filter with cup airbox and my car showed 247.67rwhp and 237.08 torque to the wheels. Same dyno prior to that showed 215.35hp to the wheels. This was with a near perfect leak down and compression. The C2 usually losses 15% drive train so roughly 290+bhp after work and 252 prior so about a 15% increase.

Not sure of C4's i know they normally use 20% loss for 993TT's but the system was totally different than the 964 so it might be closer to 25% as Marc says.

ilko

327

BlueHeeler

328