Big power in a Boxster -- how?
10-03-2003, 08:14 AM
#16
Instructor
Costs - I am traveling, so this is from memory. All in US dollars.
New 3.4 Engine - 9,000
Cam Upgrades - 3,000
Headers - 1,200
Cats - 1,200
Motronic reprogram- 1,500
Sachs power clutch - 800
Labor - 5,000 (includes install of new cams, new airbox construction, removal of old engine, installation of new, brakes)
4 Drilled rotors and SS lines - 500
Misc Hardware / Fluids / 3.4 Engine mounting Kit - 600
Being able to stomp a Corvette, 996 or M3 ............. Priceless
New 3.4 Engine - 9,000
Cam Upgrades - 3,000
Headers - 1,200
Cats - 1,200
Motronic reprogram- 1,500
Sachs power clutch - 800
Labor - 5,000 (includes install of new cams, new airbox construction, removal of old engine, installation of new, brakes)
4 Drilled rotors and SS lines - 500
Misc Hardware / Fluids / 3.4 Engine mounting Kit - 600
Being able to stomp a Corvette, 996 or M3 ............. Priceless
10-03-2003, 12:42 PM
#18
Originally posted by strudel
Any figures on final h.p.?
Any figures on final h.p.?
10-03-2003, 05:50 PM
#20
Originally posted by strudel
What's the h.p. potential from the 3.6 996 motor.
What's the h.p. potential from the 3.6 996 motor.
10-04-2003, 03:10 PM
#23
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Originally posted by Q
INVESTIGATOR
A picture is worth a thousand words....
RED = 3.4 conversion
BLUE = supercharged Boxster S
YELLOW = Boxster S with intake & exhaust
GREEN = Boxster S standard
Ignore the actual power figures, Our DYNO DYNAMICS dynos give a low reading compared to DYNO JET dynos
A local Porsche race car driver has a 3.4 Boxster as his personal drive car.
On a recent club track day, only the GT3 on slicks was ahead of him - and there was nothing in it
INVESTIGATOR
A picture is worth a thousand words....
RED = 3.4 conversion
BLUE = supercharged Boxster S
YELLOW = Boxster S with intake & exhaust
GREEN = Boxster S standard
Ignore the actual power figures, Our DYNO DYNAMICS dynos give a low reading compared to DYNO JET dynos
A local Porsche race car driver has a 3.4 Boxster as his personal drive car.
On a recent club track day, only the GT3 on slicks was ahead of him - and there was nothing in it
Something is amiss here because I've driven a 3.4L Boxster conversion and it was pretty much a dead heat for my old 3.2L Boxster S+Headers+Intake+ECU, not lightyears ahead as this dyno chart would seem to indicate. The 3.4L Motor from the 996 is rated at 295HP at the crank, or about 250 at the wheels, my modified 3.2L was cranking out 247 at the rear wheels so like I said, it was a pretty even match for a stock 3.4L.
Now if this were a highly modified 3.4L then I could see this chart making sense...
10-04-2003, 03:12 PM
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Originally posted by Steve Wilwerding
When Roock does the same conversion (w headers and chip), they get around 300 HP. It's about 320 HP doing the same with a 3.6 996 engine.
When Roock does the same conversion (w headers and chip), they get around 300 HP. It's about 320 HP doing the same with a 3.6 996 engine.
They must be using a stock 996 3.6L motor unless you are talking rear wheel horsepower and not crank hp. The 3.6L is 320 at the crank but can easily go up to 350 at the crank without forced air....
10-05-2003, 12:07 AM
#25
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Originally posted by Ghost Rider
Q -
Something is amiss here because I've driven a 3.4L Boxster conversion and it was pretty much a dead heat for my old 3.2L Boxster S+Headers+Intake+ECU, not lightyears ahead as this dyno chart would seem to indicate. The 3.4L Motor from the 996 is rated at 295HP at the crank, or about 250 at the wheels, my modified 3.2L was cranking out 247 at the rear wheels so like I said, it was a pretty even match for a stock 3.4L.
Now if this were a highly modified 3.4L then I could see this chart making sense...
Q -
Something is amiss here because I've driven a 3.4L Boxster conversion and it was pretty much a dead heat for my old 3.2L Boxster S+Headers+Intake+ECU, not lightyears ahead as this dyno chart would seem to indicate. The 3.4L Motor from the 996 is rated at 295HP at the crank, or about 250 at the wheels, my modified 3.2L was cranking out 247 at the rear wheels so like I said, it was a pretty even match for a stock 3.4L.
Now if this were a highly modified 3.4L then I could see this chart making sense...
Nothing is amiss.
The scale of the printed dyno runs is 90kw (120hp) from min to max, so a small variation appears large.
Lets break them down and look at them. (flywheel HP's quoted)
The 3.4L Boxster with exhaust, intake, chip did 230kw (308hp)
The Boxster S with exhaust, intake [no chip] did 203kw (272hp)
The standard Boxster S does 191kw (256hp)
This is all consistent with the dyno sheet.
The Boxster S in this comparison did not have a chip, so it won't be making as much HP as your car.
The 3.4 does have a chip & intake and exhaust, so it will be making more HP than the 3.4 you drove
....hence the difference between them is greater than the 2 cars you are comparing.
There, clear as mud
As a side issue it would have been interesting to see the 2 cars race.
Butt-o-meters often don't tell the whole story.....
cheers
Q
10-05-2003, 07:43 PM
#26
Instructor
My 3.4 with FVD Motronic reprogram, FVD AIrbox / Intake, Headers, 100 Cats & stck muffler did 338hp at the flywheel and 312 at the wheels at FVD.
Still have 5 speed and have been told that it is not as efficient as 6 for getting the power down hence the 26 hp drop.
Next build will be a 6 speed and a pair of Garrett ball bearing turbos.
Still have 5 speed and have been told that it is not as efficient as 6 for getting the power down hence the 26 hp drop.
Next build will be a 6 speed and a pair of Garrett ball bearing turbos.
10-06-2003, 01:27 PM
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Originally posted by Boxster 3.4
Next build will be a 6 speed and a pair of Garrett ball bearing turbos.
Next build will be a 6 speed and a pair of Garrett ball bearing turbos.
. They told me it will rate more than 330 hp. If I receive the dyno report I will post it.