carbureted 928?
#1
Rennlist Member
Thread Starter
carbureted 928?
I have seen the carbureted 350 conversion, but i looks to be a porsche v8 under the hood. Anyone seen this before?
Porsche V8
SilverSFR
Porsche V8
SilverSFR
#2
Rennlist Member
Probably 4 throttle bodies, not carborated. Nice setup. Weisach limited edition 928S with the gold anodized wheels to match.
#3
Nordschleife Master
They're carbs. Awhile back, this set up was advertised on Ebay. The owner claims better performance with this set up vrs stock FI.?
I would like to run it on a track car just to see the difference.
I would like to run it on a track car just to see the difference.
#6
Rennlist Member
I remain unconvinced, but I've been wrong before. Where are the bowls? That setup seems too narrow to be carborated. Sure would like to see it without the air filter assembly.
#7
Addict
Rennlist Member
Rennlist Member
Join Date: Jan 2003
Location: Mountains of GA!
Posts: 3,537
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by 86_5Tiburon
I remain unconvinced, but I've been wrong before. Where are the bowls? That setup seems too narrow to be carborated. Sure would like to see it without the air filter assembly.
I remain unconvinced, but I've been wrong before. Where are the bowls? That setup seems too narrow to be carborated. Sure would like to see it without the air filter assembly.
Trending Topics
#9
Nordschleife Master
Agreed definatly carb setup, and if you look at the carb closest to the driver (if US car) you can see the bowl sitting on the inside, also if they were individual throttle bodies where are the injectors, there are none, also normally if they are throttle bodies they are strickly for track use and only have velocity stacks coming out of them, and per the benifit of carbs a tiny bit more power but less effiective meaning more fuel consumption, also it means more contamination in the oil and out the tail pipe.
and it is either webers or PTO(???) and I do like that throttle linkage setup it is very well done, overall a good track setup
only thing i would have done is put a filter over the timing beltcover holes
and it is either webers or PTO(???) and I do like that throttle linkage setup it is very well done, overall a good track setup
only thing i would have done is put a filter over the timing beltcover holes
#10
Those are Del Toro's (carbs). They are sold quite often to replace the CIS FI on older German cars. There are problems created when installing them due to vacuum/cam systems. As the picture shows a new ignition system with mapped advance is required. Another problem is vacuum for the power brakes etc. If you pull all of the vacuum off of one plenum, those two cylinders will be down on power, so lots of plumbing and check valves will be required. The last problem is the cams. Since they were designed for a particular FI system the power gains will be mimimal until they are changed (both duration and lift). European Car Magazine did a step by step modification/dyno on a 924 a few years back. There was no real gains with this set up until changing to Euroraces X1 carb cams. Don't think I have heard of anyone making this type cam for the 928.
IMO switching to carbs is a step back in engine fuel management.
Dennis
IMO switching to carbs is a step back in engine fuel management.
Dennis
#11
Rennlist Member
That is Steve Tuckey's 84. He has submitted a full write up to 928 Forum Magazine on his Weber replacement for the stock L-jet F/I complete with before and after dynographs. He is marketing a kit which will be introduced in the article. There was a gain in HP with the install.
#12
I would have to agree with Dennis, though I think the phrase "step backward" is a bit generous.
EFI is the only way to go, short of a top fuel type dragster where your just kinda spraying fuel in at a ridiculous rate with a constant flow system.
Carbs are stone age technology. A properly set-up injection system will always out-do any carb system, bar none. Carbs were a stepping stone, much like points and condenser ignition - if you like 'em for your retro-ride, hey that's cool, but you leave a lot of HP and TQ on the table, let alone driveability, fuel economy and emissions.
Individual throttle body control and throttle-less intake management (by varying the intake valve opening) is the present/near term future for intake tech on performance cars.
Common rail, high pressure direct-injection is the future. Now that we have the electronics and manufacturing processes to make it viable in the mass-market, it's only a matter of time before all new cars will be direct injected.
The future is coming...
Greg
EFI is the only way to go, short of a top fuel type dragster where your just kinda spraying fuel in at a ridiculous rate with a constant flow system.
Carbs are stone age technology. A properly set-up injection system will always out-do any carb system, bar none. Carbs were a stepping stone, much like points and condenser ignition - if you like 'em for your retro-ride, hey that's cool, but you leave a lot of HP and TQ on the table, let alone driveability, fuel economy and emissions.
Individual throttle body control and throttle-less intake management (by varying the intake valve opening) is the present/near term future for intake tech on performance cars.
Common rail, high pressure direct-injection is the future. Now that we have the electronics and manufacturing processes to make it viable in the mass-market, it's only a matter of time before all new cars will be direct injected.
The future is coming...
Greg
#13
Nordschleife Master
Originally posted by atb
That is Steve Tuckey's 84. He has submitted a full write up to 928 Forum Magazine on his Weber replacement for the stock L-jet F/I complete with before and after dynographs. He is marketing a kit which will be introduced in the article. There was a gain in HP with the install.
That is Steve Tuckey's 84. He has submitted a full write up to 928 Forum Magazine on his Weber replacement for the stock L-jet F/I complete with before and after dynographs. He is marketing a kit which will be introduced in the article. There was a gain in HP with the install.
TIA
#15
Addict
Rennlist Member
Rennlist Member
Re: carbureted 928?
Originally posted by SilverSFR
I have seen the carbureted 350 conversion, but i looks to be a porsche v8 under the hood. Anyone seen this before?
Porsche V8
SilverSFR
I have seen the carbureted 350 conversion, but i looks to be a porsche v8 under the hood. Anyone seen this before?
Porsche V8
SilverSFR
Regards,
Erkka
1992 928 GTS 5-speed brown oil-water mix injected
Oak Green Metallic 22L
Classic Gray MX