9m heads make 350 BHP on N/A 95 993
03-17-2006, 07:24 PM
#1
Instructor
Thread Starter
Join Date: Jun 2001
Location: UK
Posts: 216
Likes: 0
Received 0 Likes
on
0 Posts
9m heads make 350 BHP on N/A 95 993
Hi all,
Colin finished fitting my heads this evening - just in time for the Oulton park trackday tomorrow, did a quick run on the Dyno at 19:45 before I left his shop and it showed 350 flywheel BHP (average across three runs) this is before it has its final remapping, the mixture is still out a little so potentially more to come, oh yes the torque was 426NM and unbelievably flat, and on the way to my hotel the drive was great, so much power.
I will post track impressions over the weekend, but will be taking it easy because:
1) It has new rings which will need running in ;-)
2) The mixture is not spot on - needs final mapping
3) I have not been round Oulton Park before
What a conversion - and yes before you all ask, he was running a dyno shoot out all afternoon and the figures are realistic as before my car the dyno ran 3 x GT3's and 2 x 964 RS's and this was after i arrived, not sure how many others went on before and they were all making expected power levels.
Oh yes this is all on an early 1995 non varioram 3.6 Carrera
John
Colin finished fitting my heads this evening - just in time for the Oulton park trackday tomorrow, did a quick run on the Dyno at 19:45 before I left his shop and it showed 350 flywheel BHP (average across three runs) this is before it has its final remapping, the mixture is still out a little so potentially more to come, oh yes the torque was 426NM and unbelievably flat, and on the way to my hotel the drive was great, so much power.
I will post track impressions over the weekend, but will be taking it easy because:
1) It has new rings which will need running in ;-)
2) The mixture is not spot on - needs final mapping
3) I have not been round Oulton Park before
What a conversion - and yes before you all ask, he was running a dyno shoot out all afternoon and the figures are realistic as before my car the dyno ran 3 x GT3's and 2 x 964 RS's and this was after i arrived, not sure how many others went on before and they were all making expected power levels.
Oh yes this is all on an early 1995 non varioram 3.6 Carrera
John
03-17-2006, 07:33 PM
#2
Racer
Join Date: Sep 2004
Location: RI
Posts: 287
Likes: 0
Received 0 Likes
on
0 Posts
John, I was just reading online some posts from Colin relating to building a 400+hp race engine. Your post couldn't have been any more timely for me. My basic question is this: is the conversion you got the 360ish hp upgrade Colin is offering for around 10k pds? If so, is there any longevity issues (prior discussion by Colin related to race engine but I thought I read in there that the 360 upgrade had no longevity issue). Does Colin have a website?
03-17-2006, 11:03 PM
#5
Racer
Join Date: Jan 2006
Location: Santa Barbara, CA
Posts: 410
Likes: 0
Received 0 Likes
on
0 Posts
I don't know if this is THE Colin of which you speak, but this guys got one helluva website dedicated to Porsches! 
http://www.sonicstrike.net/users/colin/ for lots of sports cars
http://www.sonicstrike.net/users/colin/public/Porsche/ for Porsches
http://www.sonicstrike.net/users/colin/ for lots of sports cars
http://www.sonicstrike.net/users/colin/public/Porsche/ for Porsches
Trending Topics
03-18-2006, 03:13 AM
#8
Racer
Join Date: Nov 2005
Location: London
Posts: 310
Likes: 0
Received 0 Likes
on
0 Posts
Colin's Website is
http://www.porschetuning.co.uk/
"are there any longevity issues"
Nobody can really answer that question until the new heads have been run for many thousands of miles in different environments, which will take years. However, as long as you also upgrade other key components (such as rods, etc) Colin's engines should be fine, since the strength, quality, machining tolerances and balance of his components are superior to OEM by a very large margin.
The engine casing itself should cause no problems, since it's also used on Turbos with much greater power, heat and component stresses.
The issues that also should concern you, is how the other components (brakes, tires, suspension, bodyshell) will cope with the increased power. A car is a "system" and increasing one element - in this case, power - requires that other parts are strenghtened accordingly.
http://www.porschetuning.co.uk/
"are there any longevity issues"
Nobody can really answer that question until the new heads have been run for many thousands of miles in different environments, which will take years. However, as long as you also upgrade other key components (such as rods, etc) Colin's engines should be fine, since the strength, quality, machining tolerances and balance of his components are superior to OEM by a very large margin.
The engine casing itself should cause no problems, since it's also used on Turbos with much greater power, heat and component stresses.
The issues that also should concern you, is how the other components (brakes, tires, suspension, bodyshell) will cope with the increased power. A car is a "system" and increasing one element - in this case, power - requires that other parts are strenghtened accordingly.
03-18-2006, 10:20 AM
#12
Three Wheelin'
Join Date: Dec 2004
Location: Halifax, Nova Scotia , Canada
Posts: 1,779
Likes: 0
Received 0 Likes
on
0 Posts
John,
So 6 heads + initial remap = 360bhp ??? or was there more ??
Certainly a very impressive result.These guys are on to something!!
Thanks
Geoff
So 6 heads + initial remap = 360bhp ??? or was there more ??
Certainly a very impressive result.These guys are on to something!!
Thanks
Geoff
03-18-2006, 01:19 PM
#14
Instructor
Thread Starter
Join Date: Jun 2001
Location: UK
Posts: 216
Likes: 0
Received 0 Likes
on
0 Posts
Red rooster:
6 heads, colins cams, 100 cell race cats, remap (not yet completed) on a 1995 non varioram = 350 flywheel BHP, will post dyno charts when remap is complete
Rkass:
shouldn't be logevity issues as the bottom end is untouched and as already commented on is more than strong enough for this type of power. Anyway I hope no issues as i do 10 -1 2 track days a year and this is my first engine work in 88,000 miles (only for the power upgrade, tight as a bell in every other respect) and want to do another 88,000 before the next, the reason I went this way rather than supercharger is my track work and greater longevity!
AVoyvoda:
Absolutely, this mod is last ;-) in a long line it complements:
Big red front and RS rear brakes
PSS9's
RS anti roll bars
GT2 rear subframe mounts
LWF and clutch
RS engine and gearbox mounts
Front strut brace
18" lightweight wheels
LSD
Cup sport track day tyres
Recaro SPG's
Track experience:
2 GT3 drivers came up to me convinced I had a supercharger fitted after I "surprised" them on the straights, this car pulls like train, Equal to a GT3 on the straights at Oulton (admittedly they are not that long) and awesome powering out of corners - just what I hoped for, i really feel my car is a match for a GT3 now and still has that oh so special 993 feel :-)
It goes back to Ninemeister on Tuesday for a remap and then I will post plots - might be a few weeks though as I am off ski-ing next weekend.
John
6 heads, colins cams, 100 cell race cats, remap (not yet completed) on a 1995 non varioram = 350 flywheel BHP, will post dyno charts when remap is complete
Rkass:
shouldn't be logevity issues as the bottom end is untouched and as already commented on is more than strong enough for this type of power. Anyway I hope no issues as i do 10 -1 2 track days a year and this is my first engine work in 88,000 miles (only for the power upgrade, tight as a bell in every other respect) and want to do another 88,000 before the next, the reason I went this way rather than supercharger is my track work and greater longevity!
AVoyvoda:
Absolutely, this mod is last ;-) in a long line it complements:
Big red front and RS rear brakes
PSS9's
RS anti roll bars
GT2 rear subframe mounts
LWF and clutch
RS engine and gearbox mounts
Front strut brace
18" lightweight wheels
LSD
Cup sport track day tyres
Recaro SPG's
Track experience:
2 GT3 drivers came up to me convinced I had a supercharger fitted after I "surprised" them on the straights, this car pulls like train, Equal to a GT3 on the straights at Oulton (admittedly they are not that long) and awesome powering out of corners - just what I hoped for, i really feel my car is a match for a GT3 now and still has that oh so special 993 feel :-)
It goes back to Ninemeister on Tuesday for a remap and then I will post plots - might be a few weeks though as I am off ski-ing next weekend.
John
