Nicole

But you still lhave the small valves - unless the head has been worked on. I doubt that a set of carburators that are much harder to tune will get you more efficient mixture, more efficient burning, and as a result more power consistently.

I can't tell you how glad I am that we left carburators behind us. I thiand US emissions regulations for this leap of technology that has made our cars as powerful and reliable as they are today.

jebdog

That same leap of technology has lead to very complicated systems using some very expensive parts with a rather high incidence of failure,brains ,mass air sensors,injection harness,sensors. The thread about some GTS cars not starting hot ,quickly comes to mind. Modern fuel injection does a good job making power and meeting emissions but the injection used on the 1980-84 can by no stretch of the imagination be considered modern. The LH as used on the 85-95 is far from state of the art, batch firing injectors ? it is at least 20 year old technology. Getting 320 hp out of a 5 liter 32 valve engine really should not be considered "powerful" The 1980 euro S made 300 out of 4.7liters with restrictive exhaust manifolds and CIS no brain injection. The complexity of modern engine management just about requires that most people take their car to the dealer and pay $100 plus per hour in the hope that they will fix it. The world is a much cleaner place because of electronic injection and perhaps that alone is justification enough.

SharkSkin

Hey the guy hasn't mentioned anything about the off-road capabilities. It certainly looks as though he has made some mods in that direction.

drnick

no dave, thats stock ride height! i thank emissions regulations for raising consciousness of the environment, but thats about it! ive heard others also recomend carbs as a way to increase the output. now what this set-up needs is an enclosed airbox..

hacker-pschorr

Anyone else getting the impression the seller of this car or someone associated with the vehicle is paying us a visit?

gruffalo

carbs make a lovely noise, and give an instant throttle response hard to match with any injection system.

FlyingDog

Why is the engine tilted???

JEC_31

1) Nobody mentioned that there was no VIN# or mileage of car stated in the ad.

2) That car looks suspiciously like my (dearly missed) early '86 I sold at auction last year - there's a bulge where the new front spoiler didn't want to fit the RH fender. And it's in my home state.

3) I would personally go with an 8-throttle-body Redline or Lumitron small-block V8 fuel injection setup, and a Motec. Carbs are for vintage cars.

heinrich

Diamond-cut headlights to me, are a sure sign to dig deeper.
We have 700-dollar headers on a relatively slow car
We have expensive wheels on a relatively slow car
We have a full repaint.
We have a turbo badge on a non-turbocharged car.
We have MSD ignition.

but most interestingly:
We have a good spare engine and we've purchased new rings, that we haven't installed.

Why? Is this one of the many 928's that someone with no skill bought, repainted, and wanted to improve on a limited budget? Did he try all sorts of ways to improve the car's average performance, and maybe did his work break things, like stripped threads, overtorqued bolts, and did he maybe run the car like a Formula One car and does she now smoke/burn oil, and is that why he bought new rings? Does he realise his skills are overwhelmed, or his budget, and now does he need to dump the car and just get out, so he can buy a used 280Z or RX-7?

Don't know. So many questions. Maybe it's a very savvy Porsche owner and he just has a good reason for all this.

mark kibort

I dont know, the carb set up looks pretty sweet! wonder what this thing could put to the wheels. I know we went from 200 rwhp with a set of headers, to 243 with the euro cams and intake. My 5 liter and euro heads bumped that up to 293 to the rears. all this with the stock Ljet injection system.
got to imagine that the 4 webers could produce some pretty big hp, even with the limitations of the smaller valves and lower compression. and, the carbs fit under the hood nicely! " CF intake, i dont need no stink'in CF intake"
MK

bcdavis

It may be "low-tech", but if it works to get more power, then it could at least be considered for a race car.

Remember this race engine?

http://www.thedeathknight.com/928/92...carEngine.html

And is this the same car?

http://www.thedeathknight.com/928/928_Carbs.html

If so, they posted here before...

Jim bailey - 928 International

Nascar gets 850 hp using ONE carb with only 4 holes to let in air and fuel this thing has EIGHT throttle bodies one per cylinder The 928 Intakes all of them have been PROVEN to restrict higher RPM horsepower ....L. OTT has individual throttle bodies, Kelly Moss , Thomas at DEVEK , Tom C. has been testing two throttle bodies, Anderson and Fan run eight intake runners and two butterflys. No idea how well this particular car runs but the potential is there.

bcdavis

And it's worth experimenting with, so I would not knock this guy for trying it.
I can see how it might be a pain in the *** to tune for day to day driving,
but for a racecar, it might make good power... Tune it the day before
the race, and let it rip... I'd actually be really interested to see what
this setup turns on the dyno...

Daniel Dudley

Properly set up webbers are a nice system on any car. Early panteras with the ford V8 have them. Most of the conversions I have driven have not been properly set up. They are often oversized to the aplication, or choked/jetted wrong,and thats before tuning. They like cams and compression to really make power, otherwise it is pretty much an even trade. I would never buy this car without driving it, unless I was prepared to sort it, and or knew where to take it. Ljetronic is a pretty nice system especially when compared to the carb systems of the late 70s. The only real drawback it has is the air flow meter can be restrictive and does not compensate well for engine mods with the exception of raising the compression. With the addition of the mass airflow sensor, this very reliable system became much more flexible, hence the number of aftermarket conversion kits for cars like the early 944. Also remember that while each cylinder has its own butterfly, long runners tend to promote good intake velocity and cylinder filling, hence the spider on the top of the early 928 engines. The single throttle body of the injected setup is also quite a bit bigger than any single cylinder needs at one time, and they open and close individually. To be honest, I'd rather see a 4 barrel holly on a V8,but I do know that there are people out there who can Get this type of setup to really go. And once setup properly, they tend to stay that way- if one can resist the urge to tinker

Jessa

If one is going to go to the trouble of replacing the L-jet, wouldn't it make more sense to use a modern feul injection/engine management setup? We've come a long way since 1980. And an even longer way since 1950...