Search found 1138 matches
- Mon May 20, 2024 1:52 am
- Forum: Propane Forum
- Topic: impco Model E versus Century model M6
- Replies: 3
- Views: 33
Re: impco Model E versus Century model M6
Yes. Century made its own mixers complete with throttle body and a variable power valve attached to the linkage. It was more complex then IMPCO's, however I must say it worked well if adjusted properly.
- Sat May 18, 2024 3:45 pm
- Forum: Propane Forum
- Topic: Impco 425 on Ford FE 428 engine
- Replies: 15
- Views: 714
Re: Impco 425 on Ford FE 428 engine
I was wondering about that. I suggest you cut the total back to 30 degrees and work up from there. Without proper equipment to measure combustion chamber pressure it is difficult to determine the ideal advance, however, IMPCO determined that the best general numbers for LPG are a base of about 14 de...
- Fri May 17, 2024 11:42 pm
- Forum: Propane Forum
- Topic: Impco 425 on Ford FE 428 engine
- Replies: 15
- Views: 714
Re: Impco 425 on Ford FE 428 engine
How do you have the timing set up? When you say 40 total is that base + mech + vac. It is possible to have too much advance making the engine struggle at wot against combustion pressures. Also what's your RPM maximum? What RPM is your power dropping off at?
- Fri May 17, 2024 11:36 pm
- Forum: Propane Forum
- Topic: impco Model E versus Century model M6
- Replies: 3
- Views: 33
Re: impco Model E versus Century model M6
The two products work at different pressures. Although an engine might run on both the Century will run richer all the way through the bands. The century reg has higher primary pressures but only requires .5" wc to pull the secondary diaphragm open.
- Thu Apr 18, 2024 1:37 am
- Forum: Propane Forum
- Topic: Impco 425 on Ford FE 428 engine
- Replies: 15
- Views: 714
Re: Impco 425 on Ford FE 428 engine
Sure. It will show if you are on the rich side with a standard O2 sensor. Normally these units come with an O2 sensor but if it doesn't have one you can use any 3 wire or 4 wire sensor heated O2 sensor from most vehicles from the 1995 to early 2000 model years. Go with the least expensive as they al...
- Tue Apr 16, 2024 6:13 pm
- Forum: Propane Forum
- Topic: Impco 425 on Ford FE 428 engine
- Replies: 15
- Views: 714
Re: Impco 425 on Ford FE 428 engine
It appears to check fuel air ratio but it doesn't appear to have a wide band O2. To explain, a narrow band O2 only shows rich or lean, not how rich or lean. A narrow band sensor considers anything over 450 MV to be rich. Anything under 450 mv is lean. The reaction time from 450 to 0 is very quick an...
- Wed Apr 10, 2024 9:21 pm
- Forum: Propane Forum
- Topic: Impco 425 on Ford FE 428 engine
- Replies: 15
- Views: 714
Re: Impco 425 on Ford FE 428 engine
Many of our Australian members have used a fuel ratio monitor called Innovator. It is fairly expensive but well known. Other similar monitors can be found on Amazon under the search function called Fuel ratio monitors. There are many available but the most important consideration is the monitor must...
- Sat Mar 30, 2024 9:24 am
- Forum: Propane Forum
- Topic: QUICK START>
- Replies: 4
- Views: 212
Re: QUICK START>
Pretty good. It's not often we have someone post and solve their own issue in seven minutes. Just to be clear though. The VFF30 is a vacuum operated lock off and filter. The recommended vacuum source is throttle body vacuum (low vacuum). It only takes negative pressure of 1.5" water column to open t...
- Sat Mar 30, 2024 9:15 am
- Forum: Propane Forum
- Topic: questions about Impco E-regulator
- Replies: 13
- Views: 8979
Re: questions about Impco E-regulator
Yes. The barbell shaped spring steel is the primary seat. It has a square thin piece of rubber on it that forms the seat. Typically this seat gets a groove worn it all the way to the steel leaving an imperfect seal. How can you tell which spring you have in the model E. The only way is the colour. T...
- Sat Mar 30, 2024 9:03 am
- Forum: Propane Forum
- Topic: Impco 425 on Ford FE 428 engine
- Replies: 15
- Views: 714
Re: Impco 425 on Ford FE 428 engine
The main question is have you adjusted your power valve? It is possible to feel better acceleration at 3/4 if your power valve is not adjusted correctly. The power valve should only be adjusted for best WOT operation. Some users try to use it to maximize fuel economy by turning it in which leaves th...
- Fri Mar 01, 2024 12:36 am
- Forum: Propane Forum
- Topic: SBC 4mpg
- Replies: 7
- Views: 1523
Re: SBC 4mpg
We would have liked to help but your not vey good at supplying any of the info asked for in a previous post. Since we haven't heard from you I have to expect you went back to the basics and solved your problem.
- Tue Jan 09, 2024 12:21 am
- Forum: Your Car
- Topic: No start,Quick start.
- Replies: 5
- Views: 1653
Re: No start,Quick start.
The reason for the lack of responses is you are posting in the wrong area. Many newcomers post in this area to introduce themselves, however most of the members go straight to the Propane index forum to look for members asking for help. Most don't notice posts in the Introduce yourself area. So, a q...
- Mon Jan 08, 2024 11:58 pm
- Forum: Propane Forum
- Topic: What size is the large O ring in OHG mixer
- Replies: 7
- Views: 1740
Re: What size is the large O ring in OHG mixer
What most newbies don't realize is that this gap is the air vent that allows the piston to move back down after vacuum pulls it up. Many think the o'ring is broken and will either try to glue it together or put on a similar o'ring that is intact. The gap is important to provide proper lift and to al...
- Thu Jan 04, 2024 3:18 pm
- Forum: Propane Forum
- Topic: What size is the large O ring in OHG mixer
- Replies: 7
- Views: 1740
Re: What size is the large O ring in OHG mixer
OHG X450 O'ring data.
Diameter: 2.6MM or .098"
Length: 12.25" or 31CM or 310MM
Trim length to allow small gap between ends. Approximately 1/32" to 1/16"
Material: Unknown but appears to be the same as a standard black o'ring.
Diameter: 2.6MM or .098"
Length: 12.25" or 31CM or 310MM
Trim length to allow small gap between ends. Approximately 1/32" to 1/16"
Material: Unknown but appears to be the same as a standard black o'ring.
- Wed Jan 03, 2024 1:32 pm
- Forum: Propane Forum
- Topic: What size is the large O ring in OHG mixer
- Replies: 7
- Views: 1740
Re: What size is the large O ring in OHG mixer
I should have also mentioned, check the colour of the secondary spring in the regulator. To use it with an OHG mixer it should be orange in colour. Blue works with IMPCO 425. Orange, the 1/2" WC, works with the X450.