Search found 621 matches

by DWR46
Thu Mar 21, 2024 3:37 pm
Forum: Vintage Ferraris
Topic: Undercoating
Replies: 3
Views: 94

Re: Undercoating

Melchior, Tom: After I researched undercoating many years ago, I came to the conclusion, it was applied by the following method: 1. A man actually laid on his back under the car and shot the undercoating straight up toward the body/chassis. This is why the sides of the frame and other areas are not ...
by DWR46
Fri Mar 08, 2024 10:51 am
Forum: Vintage Ferraris
Topic: Securing plate for droop stop rubber
Replies: 10
Views: 261

Re: Securing plate for droop stop rubber

Martin: Those parts were originally designed for the 2+2 (508E) chassis.
by DWR46
Sat Mar 02, 2024 11:04 am
Forum: Vintage Ferraris
Topic: Plug wire installation
Replies: 7
Views: 259

Re: Plug wire installation

Lube the wires with silicone spray, insert them through the small end with the grommet first and easily push them to the large open end. Should be no problem at all. I have done dozens and dozens of engines that way.
by DWR46
Tue Nov 28, 2023 10:20 am
Forum: Vintage Ferraris
Topic: Weber DCZ6 Flat Spot
Replies: 10
Views: 2123

Re: Weber DCZ6 Flat Spot

Terry: What size Main Jets?
by DWR46
Mon Nov 27, 2023 7:31 pm
Forum: Vintage Ferraris
Topic: Weber DCZ6 Flat Spot
Replies: 10
Views: 2123

Re: Weber DCZ6 Flat Spot

Terry: Puzzling, almost every time larger Idles cure the problem. Hard to diagnose a drivability problem over a computer. Are the carbs correctly synchronized? Is the linkage set up correctly? Good spark plugs? Good plug wires? Do the pump jets squirt fuel quickly as soon and the throttle is opened?...
by DWR46
Tue Nov 07, 2023 7:20 pm
Forum: Vintage Ferraris
Topic: Weber DCZ6 Flat Spot
Replies: 10
Views: 2123

Re: Weber DCZ6 Flat Spot

Terry: That is what I expected. Call Pierce Manifolds and get a set of 65 Idles. I end up running 65's in all the DCZ's today.
by DWR46
Mon Nov 06, 2023 9:56 am
Forum: Vintage Ferraris
Topic: Weber DCZ6 Flat Spot
Replies: 10
Views: 2123

Re: Weber DCZ6 Flat Spot

Terry: Take out the Idle Jets and make sure they are open. Tell me what size they are. Today's fuel causes engines to run about 14% leaner than the fuels of the 1960s. You probably need to go up one size in Idle Jet. The Idle Jets effect the mixture quite a way up the rev range under partial loads.
by DWR46
Fri Oct 27, 2023 9:45 am
Forum: Vintage Ferraris
Topic: Weber DCZ6 accelerator pumps
Replies: 17
Views: 5364

Re: Weber DCZ6 accelerator pumps

Steve; Most "starting fluids" are not good for engines due to their tendency to provide "uncontrolled combustion". Also, you may get the engine running, but the accelerator pumps are still not going to work and the car will "fall on its face" when you try to accelerate.
by DWR46
Thu Oct 26, 2023 10:49 pm
Forum: Vintage Ferraris
Topic: Weber DCZ6 accelerator pumps
Replies: 17
Views: 5364

Re: Weber DCZ6 accelerator pumps

Tom: alcohol is a wonderful solvent. It will flush all the old dried varnish from fuel systems and leave it wherever it ( the ethanol) dries out (needle and seats) when the car sets for awhile. I used to have this ALL the time, but, amazingly, it seems Marvel Oil and non-ethanol fuels have caused th...
by DWR46
Mon Oct 23, 2023 4:32 pm
Forum: Vintage Ferraris
Topic: Weber DCZ6 accelerator pumps
Replies: 17
Views: 5364

Re: Weber DCZ6 accelerator pumps

Terry: The recommended amount on the container, 4 oz/10 gal gas. The big benefit is to make the valves in both the mechanical and electric fuel pumps seal better and avoid vapor lock at high ambient temps. It also does actually help with valve stem/guide lubrication. It was originally developed in t...
by DWR46
Mon Oct 23, 2023 3:10 pm
Forum: Vintage Ferraris
Topic: Weber DCZ6 accelerator pumps
Replies: 17
Views: 5364

Re: Weber DCZ6 accelerator pumps

Terry: Are you using Marvel Mystery Oil? I can't prove it, but it appears to help, and I KNOW it has fuel Pump benefits.
by DWR46
Mon Oct 23, 2023 10:31 am
Forum: Vintage Ferraris
Topic: Weber DCZ6 accelerator pumps
Replies: 17
Views: 5364

Re: Weber DCZ6 accelerator pumps

Terry: VERY common problem with today's ethanol fuels. The ethanol causes the Pump Delivery Valve (the screw that holds the Pump Jet into the top of the carb body) ball check to stick closed and not let gas flow to the Pump Jet itself. There is a ball in this "screw" and it acts as a one way valve t...
by DWR46
Wed Sep 27, 2023 9:58 am
Forum: Vintage Ferraris
Topic: Webers and ETOH
Replies: 2
Views: 4591

Re: Webers and ETOH

Steve: you have a very common problem. If these are DCN carbs, how new are the pump diaphragms? If over 15 years old, they are probably not the current ethanol resistant ones. Pump problems vary by location as the Feds mandate different fuel mixes all over the country. Non-ethanol gas will DEFINITEL...
by DWR46
Thu Sep 07, 2023 4:23 pm
Forum: Vintage Ferraris
Topic: 330GT SII dunlop caliper rebuild or replace
Replies: 7
Views: 7567

Re: 330GT SII dunlop caliper rebuild or replace

Michael: As Chris has said, if you want the car to appear original, sleeve and rebuild your old Dunlop units. However, we have used the modern replacements from BG Developments in the UK (check their website) for our vintage racing Ferraris. They are a bolt-on replacement for the original Dunlop's, ...
by DWR46
Thu Jun 29, 2023 9:43 pm
Forum: Vintage Ferraris
Topic: 330GTC radiator
Replies: 5
Views: 5531

Re: 330GTC radiator

Factory radiators were painted satin black all over. Today, I would recommend leaving the core unpainted or with the lightest possible coat of paint to help heat transfer.