924S engine Build (Project Performance NA)
07-01-2004, 03:31 PM
#16
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Join Date: Jun 2003
Location: Minnesota
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fast924s!
Looks like the thread is dying! This is sad. We need way more information. Again it seems nobody does anything major with a 2.5 n/a. We deffinately need to find some people that have done the impossible? I am joining PCA today in the hope of becoming more knowlegable!
Looks like the thread is dying! This is sad. We need way more information. Again it seems nobody does anything major with a 2.5 n/a. We deffinately need to find some people that have done the impossible? I am joining PCA today in the hope of becoming more knowlegable!
07-01-2004, 03:37 PM
#17
Race Director
I know that his name is not well-liked around here, but John Anderson has done some high power 944 non-turbo motors in the past. He may be able to offer a little insight. I'm not certain if his site is still around or not, but do a search for "anderson motorworks".
07-01-2004, 03:37 PM
#18
Race Director
Jon Milledge is about one of few to have done much to NA's and actually get power. His is biggest issue is cost. He ain't exactly cheap.
John Anderson also has done some work on 2.5L NA's. Unfortuanlty there have been some mixed experiences on list with him. I have never done business with him and he is still around (andersonmotorworksinc.com I think)
Not sure of any others.
Realisticly how much are you looking to spend? If money is not a huge concern I'd start with Milledge and give him a blank check . What you get back will be an empty bank account and a pretty fast NA.
John Anderson also has done some work on 2.5L NA's. Unfortuanlty there have been some mixed experiences on list with him. I have never done business with him and he is still around (andersonmotorworksinc.com I think)
Not sure of any others.
Realisticly how much are you looking to spend? If money is not a huge concern I'd start with Milledge and give him a blank check . What you get back will be an empty bank account and a pretty fast NA.
07-01-2004, 03:42 PM
#20
Race Director
07-01-2004, 08:25 PM
#21
Race Director
If I had a 944 road car that I was going to build to my specs (as opposed to built to a strict set of racing rules) I'd do the following:
Mild:
Balance all of the rotating and reciprocating mass
New rings of course
Valve job
Port and polish
Low mass flywheel
Broadfoot underdrive pulleys
Milledge cam and header
Engine management .... ??
Custom CAI with a long tube placing the filter in the fender well
Wild:
5 angle valve job or even radiused
Additional compression - perhaps even look into reshaping the combustion chambers, but that's expensive and you need someone who really knows what they hell they are doing
Oversize pistons (very hard to find these days)
Tulip the valve stems
Covert to MAF
The mild set-up I'd estimate to cost in the neighborhood of $3k, the wild probably double.
Mild:
Balance all of the rotating and reciprocating mass
New rings of course
Valve job
Port and polish
Low mass flywheel
Broadfoot underdrive pulleys
Milledge cam and header
Engine management .... ??
Custom CAI with a long tube placing the filter in the fender well
Wild:
5 angle valve job or even radiused
Additional compression - perhaps even look into reshaping the combustion chambers, but that's expensive and you need someone who really knows what they hell they are doing
Oversize pistons (very hard to find these days)
Tulip the valve stems
Covert to MAF
The mild set-up I'd estimate to cost in the neighborhood of $3k, the wild probably double.
07-01-2004, 08:39 PM
#22
Banned
Thread Starter
Yea I like your mild setup, I want to do just about the same with the valve job and I already have a MAF kit and a good performance exhaust. I also would like to do the 2.8 conversion but it might be too much $$$$$, Im only looking to spend about 3,000-3,500, sso it looks like it might just be a sweet 2.5L, How much HP do you think I can get from Geo's mild setup plus MAf kit and exhaust, maybe a 10.5 to 1 CR, Solid 200-210HP??
07-01-2004, 09:33 PM
#23
Race Director
"How much HP do you think I can get from Geo's mild setup plus MAf kit and exhaust, maybe a 10.5 to 1 CR, Solid 200-210HP??"
Many peopel have been there, done that. You're looking at about +30-40hp over stock, which is nothing to sneeze at, or about 155-165rwhp.
Here's my WILD configuration:
- 3.0L 110mm bored motor (wet-liner cylinder-replacement, not sleeved)
- 11 to 12.0:1 compression pistons (ceramic coated tops, teflon sides)
- early 951 forged rods (cheap & heavy) or Pauter rods (light & expensive)
- larger diameter, narrow-stem, ligher valves
- fully-radiused contoured valved seats
- full D-porting on head, extend into intake-manifold, shorten valve-guide bump
- custom-grind cam to match head, valve, piston, compression & displacement
- lighten/balance crank, flywheel
- dyno-tuned custom-programmed chip for MAF & engine-configuration
The idea here is to increase high-RPM flow and the extra displacement takes care of restoring the low-end torque from such high-RPM mods. Now we're looking at an engine with about 200lb•ft of torque and 220-230rwhp. My cost on parts and machining services comes out to about $3k and I'll provide the 50 hours of labor for free ($2-3K) if anyone wants to try out this configuration.
BTW, you can't use Turbo injectors because of their bizarre 5.5-ohm impedance. Also 45-lb/hr is a better flow-rating for this target engine. Custom chip will take care of appropriate fuel-map scaling for larger injectors.
Many peopel have been there, done that. You're looking at about +30-40hp over stock, which is nothing to sneeze at, or about 155-165rwhp.
Here's my WILD configuration:
- 3.0L 110mm bored motor (wet-liner cylinder-replacement, not sleeved)
- 11 to 12.0:1 compression pistons (ceramic coated tops, teflon sides)
- early 951 forged rods (cheap & heavy) or Pauter rods (light & expensive)
- larger diameter, narrow-stem, ligher valves
- fully-radiused contoured valved seats
- full D-porting on head, extend into intake-manifold, shorten valve-guide bump
- custom-grind cam to match head, valve, piston, compression & displacement
- lighten/balance crank, flywheel
- dyno-tuned custom-programmed chip for MAF & engine-configuration
The idea here is to increase high-RPM flow and the extra displacement takes care of restoring the low-end torque from such high-RPM mods. Now we're looking at an engine with about 200lb•ft of torque and 220-230rwhp. My cost on parts and machining services comes out to about $3k and I'll provide the 50 hours of labor for free ($2-3K) if anyone wants to try out this configuration.
BTW, you can't use Turbo injectors because of their bizarre 5.5-ohm impedance. Also 45-lb/hr is a better flow-rating for this target engine. Custom chip will take care of appropriate fuel-map scaling for larger injectors.
07-01-2004, 10:06 PM
#24
Set to Full-Auto
Rennlist Member
Rennlist Member
Ok, I am going to be building a 16v engine for my "S", where do I get performance cams? Are 944S and 928 (32v) cams the same?
Also, I am planning on replacing the DME with the megasquirt and a generic MAF sensor to replace that stupid barn door AFM.
Also, I am planning on replacing the DME with the megasquirt and a generic MAF sensor to replace that stupid barn door AFM.
07-02-2004, 02:41 PM
#27
Race Director
Originally posted by Danno
"How much HP do you think I can get from Geo's mild setup plus MAf kit and exhaust, maybe a 10.5 to 1 CR, Solid 200-210HP??"
Many peopel have been there, done that. You're looking at about +30-40hp over stock, which is nothing to sneeze at, or about 155-165rwhp.
Here's my WILD configuration:
- 3.0L 110mm bored motor (wet-liner cylinder-replacement, not sleeved)
- 11 to 12.0:1 compression pistons (ceramic coated tops, teflon sides)
- early 951 forged rods (cheap & heavy) or Pauter rods (light & expensive)
- larger diameter, narrow-stem, ligher valves
- fully-radiused contoured valved seats
- full D-porting on head, extend into intake-manifold, shorten valve-guide bump
- custom-grind cam to match head, valve, piston, compression & displacement
- lighten/balance crank, flywheel
- dyno-tuned custom-programmed chip for MAF & engine-configuration
The idea here is to increase high-RPM flow and the extra displacement takes care of restoring the low-end torque from such high-RPM mods. Now we're looking at an engine with about 200lb•ft of torque and 220-230rwhp. My cost on parts and machining services comes out to about $3k and I'll provide the 50 hours of labor for free ($2-3K) if anyone wants to try out this configuration.
BTW, you can't use Turbo injectors because of their bizarre 5.5-ohm impedance. Also 45-lb/hr is a better flow-rating for this target engine. Custom chip will take care of appropriate fuel-map scaling for larger injectors.
"How much HP do you think I can get from Geo's mild setup plus MAf kit and exhaust, maybe a 10.5 to 1 CR, Solid 200-210HP??"
Many peopel have been there, done that. You're looking at about +30-40hp over stock, which is nothing to sneeze at, or about 155-165rwhp.
Here's my WILD configuration:
- 3.0L 110mm bored motor (wet-liner cylinder-replacement, not sleeved)
- 11 to 12.0:1 compression pistons (ceramic coated tops, teflon sides)
- early 951 forged rods (cheap & heavy) or Pauter rods (light & expensive)
- larger diameter, narrow-stem, ligher valves
- fully-radiused contoured valved seats
- full D-porting on head, extend into intake-manifold, shorten valve-guide bump
- custom-grind cam to match head, valve, piston, compression & displacement
- lighten/balance crank, flywheel
- dyno-tuned custom-programmed chip for MAF & engine-configuration
The idea here is to increase high-RPM flow and the extra displacement takes care of restoring the low-end torque from such high-RPM mods. Now we're looking at an engine with about 200lb•ft of torque and 220-230rwhp. My cost on parts and machining services comes out to about $3k and I'll provide the 50 hours of labor for free ($2-3K) if anyone wants to try out this configuration.
BTW, you can't use Turbo injectors because of their bizarre 5.5-ohm impedance. Also 45-lb/hr is a better flow-rating for this target engine. Custom chip will take care of appropriate fuel-map scaling for larger injectors.
If I lived there I would take you up on it.
Care to move out to Ohio instead?
