New Crankshafts
02-23-2012, 08:53 PM
#242
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
02-23-2012, 09:31 PM
#244
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
02-24-2012, 12:02 AM
#245
Pro
Join Date: Mar 2004
Location: Perth, Western Australia
Posts: 715
Likes: 0
Received 14 Likes
on
13 Posts
I have a (sort of) serious question.
Background:
A. I have a couple of LHD 928S4s. Why?
1. Because I am a cheap bastard, and the LHD version is less than half the price of a RHD model here.
2. I can register and drive the LHD on our roads without issue.
B. I have been contemplating building an Ultima (http://www.ultimasports.co.uk/Content.aspx?f=gtrintro) with my son as a bonding and learning exercise.
C. The Ultima is intended to accept a small block Chevrolet V8, mated to a Porsche 911 transaxle with an adapter plate.
The Question:
Does anybody think that putting a 928 V8 in the engine room would be feasible, defensible, and fun?
With all the good gear from Doc Brown it SOUNDS like it might be a good idea, bearing in mind that a new SBC with 600 HP from Amerspeed would set me back about $20K, and that is with a carburettor.
Background:
A. I have a couple of LHD 928S4s. Why?
1. Because I am a cheap bastard, and the LHD version is less than half the price of a RHD model here.
2. I can register and drive the LHD on our roads without issue.
B. I have been contemplating building an Ultima (http://www.ultimasports.co.uk/Content.aspx?f=gtrintro) with my son as a bonding and learning exercise.
C. The Ultima is intended to accept a small block Chevrolet V8, mated to a Porsche 911 transaxle with an adapter plate.
The Question:
Does anybody think that putting a 928 V8 in the engine room would be feasible, defensible, and fun?
With all the good gear from Doc Brown it SOUNDS like it might be a good idea, bearing in mind that a new SBC with 600 HP from Amerspeed would set me back about $20K, and that is with a carburettor.
02-24-2012, 12:16 AM
#247
Race Director
I have a (sort of) serious question.
Background:
A. I have a couple of LHD 928S4s. Why?
1. Because I am a cheap bastard, and the LHD version is less than half the price of a RHD model here.
2. I can register and drive the LHD on our roads without issue.
B. I have been contemplating building an Ultima (http://www.ultimasports.co.uk/Content.aspx?f=gtrintro) with my son as a bonding and learning exercise.
C. The Ultima is intended to accept a small block Chevrolet V8, mated to a Porsche 911 transaxle with an adapter plate.
The Question:
Does anybody think that putting a 928 V8 in the engine room would be feasible, defensible, and fun?
With all the good gear from Doc Brown it SOUNDS like it might be a good idea, bearing in mind that a new SBC with 600 HP from Amerspeed would set me back about $20K, and that is with a carburettor.
Background:
A. I have a couple of LHD 928S4s. Why?
1. Because I am a cheap bastard, and the LHD version is less than half the price of a RHD model here.
2. I can register and drive the LHD on our roads without issue.
B. I have been contemplating building an Ultima (http://www.ultimasports.co.uk/Content.aspx?f=gtrintro) with my son as a bonding and learning exercise.
C. The Ultima is intended to accept a small block Chevrolet V8, mated to a Porsche 911 transaxle with an adapter plate.
The Question:
Does anybody think that putting a 928 V8 in the engine room would be feasible, defensible, and fun?
With all the good gear from Doc Brown it SOUNDS like it might be a good idea, bearing in mind that a new SBC with 600 HP from Amerspeed would set me back about $20K, and that is with a carburettor.
Honestly one of my "when I'm rich" scenarios is an ultima with 928 engine or a tube frame 928....
02-24-2012, 12:22 AM
#248
Pro
Join Date: Mar 2004
Location: Perth, Western Australia
Posts: 715
Likes: 0
Received 14 Likes
on
13 Posts
I guessed that.
I'm cool with it being a LOT more - I maybe a cheap bastard, but I know value
I can't see myself EVER putting a carburetted engine into ANY car - even lawn mowers are injected these days!
To get an Amerspeed engine with injection is also a little moooooore (like 50% more).
I'm cool with it being a LOT more - I maybe a cheap bastard, but I know value
I can't see myself EVER putting a carburetted engine into ANY car - even lawn mowers are injected these days!
To get an Amerspeed engine with injection is also a little moooooore (like 50% more).
02-24-2012, 01:35 AM
#249
Former Sponsor
Thread Starter
would a street legal Ultima with a Doc Brown 6.5L 928 engine be cool...HELL YES...but it would cost more than the SBC alternative.... However you end up with a 650hp monster that is literally one of a kind.....there isn't an ultima in the world with a 928 engine......not to mention a monster like Doc builds....
Honestly one of my "when I'm rich" scenarios is an ultima with 928 engine or a tube frame 928....
Honestly one of my "when I'm rich" scenarios is an ultima with 928 engine or a tube frame 928....
Poor bastards....this 928 stuff looks so simple, but there are a few tricks. I've been told that the 944GTR they "converted" is still sitting on a shelf back there.
02-24-2012, 02:34 AM
#250
Pro
Join Date: Mar 2004
Location: Perth, Western Australia
Posts: 715
Likes: 0
Received 14 Likes
on
13 Posts
I want to build a 944 GTR with a 928 engine in it...much like Kelly Moss did...except I'd make it actually run. What a fricking slot car that would be!
Poor bastards....this 928 stuff looks so simple, but there are a few tricks. I've been told that the 944GTR they "converted" is still sitting on a shelf back there.
Poor bastards....this 928 stuff looks so simple, but there are a few tricks. I've been told that the 944GTR they "converted" is still sitting on a shelf back there.
Did I mention that I also have a 944S2?
Just sayin'.
02-24-2012, 09:57 AM
#252
Three Wheelin'
This is the engine that a gearhead wants.
I don't know where this modern psyche of getting by as cheaply and easily as possible with the engine came from. The engine is the heart and soul of a car, the other stuff is just to keep the engine off the ground. How could you build a car and then stuff in some generic cheap lump that's just like everyone else? Since when is one's passion given the same criteria as though he were repairing an irrigation pump?
I have one of these big healthy Porsche engines similar to what Greg builds. It amazes me with how good it is at making big power and doing so easily. I've never driven any engine so good in all my life, to get here has usually required characteristics that are hard to live with and don't last long. These engines will make big power on pump gas and not wear out from freakish valve springs or high compression.
As far as the mythical lightweight of chevys, I've compared my car with an identically prepped 944 w/chevy and mine was 20 lbs lighter. Whatever they weigh they should be lighter since they are down by 300-400hp and are fragile.
02-24-2012, 10:29 AM
#253
Rennlist Member
Is the open deck design of the 928 engine block a problem to consider if you raise the rpm by 800 or 1000 rpm?
My shop here tells me the bores vibrate if the rpm raise above healthy levels and the head gaskets fail.
So if you refresh and lightening the rotating parts is the next problem behind the corner?
Here in Germany a 944 engine builder use a top plate for the block to stabilize the bores.
My shop here tells me the bores vibrate if the rpm raise above healthy levels and the head gaskets fail.
So if you refresh and lightening the rotating parts is the next problem behind the corner?
Here in Germany a 944 engine builder use a top plate for the block to stabilize the bores.
02-24-2012, 10:30 AM
#254
Rennlist Member
Mike speaks the truth. Although these engines have weaknesses, once you understand how to overcome them, you are will an incredible engine!
Mark K also speaks the truth.....all you need is one to survive the impossible and once you figure out why, then you actually have useful knowledge. So far, no one here has figured it out. Maybe MArk figured it out and is not letting on?
There are many long life, high powered, durable and often raced 928 engines....including Mark K, Mike S, Louis O, Tim D and others.
Keep up the great work....
Mark K also speaks the truth.....all you need is one to survive the impossible and once you figure out why, then you actually have useful knowledge. So far, no one here has figured it out. Maybe MArk figured it out and is not letting on?
There are many long life, high powered, durable and often raced 928 engines....including Mark K, Mike S, Louis O, Tim D and others.
Keep up the great work....
02-24-2012, 12:12 PM
#255
Rennlist Member
A 6+ litre 4 valve Porsche engine can make serious power that a 2 valve can't dream of and not have inherent detonation or valvetrain problems.
This is the engine that a gearhead wants.
I don't know where this modern psyche of getting by as cheaply and easily as possible with the engine came from. The engine is the heart and soul of a car, the other stuff is just to keep the engine off the ground. How could you build a car and then stuff in some generic cheap lump that's just like everyone else? Since when is one's passion given the same criteria as though he were repairing an irrigation pump?
I have one of these big healthy Porsche engines similar to what Greg builds. It amazes me with how good it is at making big power and doing so easily. I've never driven any engine so good in all my life, to get here has usually required characteristics that are hard to live with and don't last long. These engines will make big power on pump gas and not wear out from freakish valve springs or high compression.
As far as the mythical lightweight of chevys, I've compared my car with an identically prepped 944 w/chevy and mine was 20 lbs lighter. Whatever they weigh they should be lighter since they are down by 300-400hp and are fragile.
This is the engine that a gearhead wants.
I don't know where this modern psyche of getting by as cheaply and easily as possible with the engine came from. The engine is the heart and soul of a car, the other stuff is just to keep the engine off the ground. How could you build a car and then stuff in some generic cheap lump that's just like everyone else? Since when is one's passion given the same criteria as though he were repairing an irrigation pump?
I have one of these big healthy Porsche engines similar to what Greg builds. It amazes me with how good it is at making big power and doing so easily. I've never driven any engine so good in all my life, to get here has usually required characteristics that are hard to live with and don't last long. These engines will make big power on pump gas and not wear out from freakish valve springs or high compression.
As far as the mythical lightweight of chevys, I've compared my car with an identically prepped 944 w/chevy and mine was 20 lbs lighter. Whatever they weigh they should be lighter since they are down by 300-400hp and are fragile.
