Search found 1041 matches

by C3H8
Mon Jan 13, 2020 3:42 pm
Forum: Propane Forum
Topic: Status on High Performance 4-barrel Carbs
Replies: 5
Views: 95

Re: Status on High Performance 4-barrel Carbs

First a comment on the 450 mixer. You can use it with IMPCO vapourizers. The only difference using the IMPCO E or L is the secondary spring has to be changed from the blue spring (neg. 1.5" WC) to the orange spring (neg .5" WC). As for the availability of equipment. Simply put it comes down to suppl...
by C3H8
Fri Dec 20, 2019 12:33 pm
Forum: Propane Forum
Topic: VPV tuning
Replies: 9
Views: 175

Re: VPV tuning

Excellent choice. You carried the logic forward to a solution I didn't think of. Your valve will only have to operate momentarily unlike my recommendation that required continuous voltage and the inclusion of a switch. Thanks for updating us.
by C3H8
Sun Dec 15, 2019 12:58 pm
Forum: Propane Forum
Topic: VPV tuning
Replies: 9
Views: 175

Re: VPV tuning

The valve you show is vey economical. Great price. It indicates it is for air and will work on LPG probably. The seat material may not be completely compatible with LPG though and possible deteriorate quicker than a fuel rated seat.
by C3H8
Sun Dec 15, 2019 12:53 pm
Forum: Propane Forum
Topic: VPV tuning
Replies: 9
Views: 175

Re: VPV tuning

Any solenoid like that would work. The reason I suggested a 4048 is they are very light. Another alternative is this solenoid shown on ebay. https://www.ebay.ca/itm/SOLENOID-LOCK-OFF-VALVE-LPG-PROPANE-12V-FUELOCK-LOCKOFF-LIQUID-VAPOR-GAS-VOLT-LP/322904060337?_trkparms=aid%3D1110001%26algo%3DSPLICE.S...
by C3H8
Wed Dec 11, 2019 1:00 pm
Forum: Propane Forum
Topic: VPV tuning
Replies: 9
Views: 175

Re: VPV tuning

One other comment. I just looked at your picture. The VPV is set up correctly. Your model E is oriented incorrectly though. The regulator outlet should be pointed downwards. In your setup oil residue will slowly build up in the regulator eventually affecting diaphragm operation. If you leave your se...
by C3H8
Wed Dec 11, 2019 12:52 pm
Forum: Propane Forum
Topic: VPV tuning
Replies: 9
Views: 175

Re: VPV tuning

Puzzling. The 200 mixers are notoriously lean so flooding using a VPV is rare. That being said assuming you have it connected correctly by using the indicated ports a small electric lockoff would likely solve your problem. You could use an IMPCO SV valve or small electric solenoid inline between the...
by C3H8
Thu Nov 14, 2019 3:32 pm
Forum: Propane Forum
Topic: Starting problem with Model 425 Mixer on a 1995 Chevy S10
Replies: 5
Views: 444

Re: Starting problem with Model 425 Mixer on a 1995 Chevy S10

The 4.3 is more then capable of generating the airflow for a 425 unless the 425 is worn internally. Hundreds of CA300/50 series mixers and 425 mixers were installed on UPS vans in Canada and worked successfully. If the only issue is starting then either an SV primer or an alternative high pressure p...
by C3H8
Thu Nov 07, 2019 4:04 am
Forum: Propane Forum
Topic: Dualcurve repair?
Replies: 1
Views: 143

Re: Dualcurve repair?

It depends on the construction. At one time the dualcurve box electronics were encased in a molded compound that made accessing the electronics impossible. Later they stopped doing this. The main issue is the reason for the failure. Did the tracer on a circuit board fail? That could be easily repair...
by C3H8
Thu Sep 12, 2019 1:55 pm
Forum: Propane Forum
Topic: Help to identify the parts in this picture.
Replies: 12
Views: 775

Re: Help to identify the parts in this picture.

Hi Storm. What an awesome car. The link was great. The underhood system is Century 100%. The carbs have the famous draglink setup common to Century carburetors for decades. Like you though I have never seen filters like this. Have you tried using the contact us box on the website. I noticed the site...
by C3H8
Sun Jul 21, 2019 1:39 am
Forum: Propane Forum
Topic: Impco accel Hesitation, poor idle when warm VY Commodore
Replies: 9
Views: 645

Re: Impco accel Hesitation, poor idle when warm VY Commodore

I'm pretty sure your referring to a check valve IMPCO designed back in the 90's. The tiny airbleed orifice in the fuel control fitting is too small to allow rapid movement of the secondary diaphragm and this caused a hesitation. IMPCO made a spring loaded check valve to allow control under most circ...
by C3H8
Wed Apr 10, 2019 1:49 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 39
Views: 2305

Re: Adding an elec. fuelpump to an Impco vaporizer+425 setup

Sorry guys. That was me that mentioned Bennet early on in this post. The guy I was referring to was Dave Bennet. He lived in Minnesota in the USA. Dave developed a system in the mid 90's on Fords where he used the OEM ECU. He installed a special tank from sleegers with an electric pump to maintain a...
by C3H8
Fri Mar 22, 2019 5:14 pm
Forum: Propane Forum
Topic: Musings on Dual Fuel Implementation
Replies: 3
Views: 350

Re: Musings on Dual Fuel Implementation

Forgot. Another EGR benefit. It allowed an increase in timing at cruise because of the lower combustion chamber pressures.
by C3H8
Fri Mar 22, 2019 5:12 pm
Forum: Propane Forum
Topic: Musings on Dual Fuel Implementation
Replies: 3
Views: 350

Re: Musings on Dual Fuel Implementation

That's quite a project with many upsides. The only comment I can add would be its too bad you eliminated the EGR. EGR's are one of the true better emission devices manufacturers installed that did everything intended. A properly functioning EGR improves economy during cruise and lowers combustion te...
by C3H8
Fri Mar 22, 2019 5:01 pm
Forum: Propane Forum
Topic: What does the RCV valve do ?
Replies: 3
Views: 333

Re: What does the RCV valve do ?

Add to that. It is only used with fuel control systems that use vacuum to control the secondary diaphragm. The standard orifice bleed hole in the fuel control fitting was not large enough to allow rapid response of the secondary diaphragm. The regulator control valve would open if the throttle was f...
by C3H8
Thu Mar 21, 2019 2:43 am
Forum: Propane Forum
Topic: Additional mixture base leaning
Replies: 7
Views: 569

Re: Additional mixture base leaning

There is still something that does not make sense here. From the day they were first produced 200 and 225 series mixers have been notorious for being lean at idle. Also as you state the mixer is on the large size for your engine. I that case it should even be leaner since the air flow would be reduc...