Search found 606 matches

by storm
Tue Jan 15, 2019 7:32 pm
Forum: Propane Forum
Topic: Air line oiler as simple valve lubricator
Replies: 8
Views: 39

Re: Air line oiler as simple valve lubricator

The flash lube fluid is like a thicker machine (like sewing machine) oil, it is definitely not as thick as engine oil or 2 stroke oil.
by storm
Sun Jan 13, 2019 2:43 am
Forum: Propane Forum
Topic: UPDATE!! Adjusting timing propane engine and impco 425 mixers
Replies: 35
Views: 846

Re: UPDATE!! Adjusting timing propane engine and impco 425 mixers

Get a small grub screw (can't remember the size sorry), tap the hole part way down use some locktite and screw the grub screw in from the top.
by storm
Sun Jan 13, 2019 1:03 am
Forum: Propane Forum
Topic: Air line oiler as simple valve lubricator
Replies: 8
Views: 39

Re: Air line oiler as simple valve lubricator

I had a flashlube kit and originally used the flashlube oil. I have also used a product from Morey's which become their upper cylinder lubricant.
by storm
Sat Jan 12, 2019 9:09 pm
Forum: Propane Forum
Topic: Air line oiler as simple valve lubricator
Replies: 8
Views: 39

Re: Air line oiler as simple valve lubricator

I know how the concept works, I used to have one on my 5 litre Commodore. I find it interesting that you are using the PCV to assist.
by storm
Sat Jan 12, 2019 7:21 pm
Forum: Propane Forum
Topic: UPDATE!! Adjusting timing propane engine and impco 425 mixers
Replies: 35
Views: 846

Re: UPDATE!! Adjusting timing propane engine and impco 425 mixers

Have you sealed the hole in the middle of the Holley baseplate? If you haven't you will have an unmetered vacuum leak. Take a look at the attachments, see the Holley baseplate has a hole in the centre. If this is not blocked off you will have a vacuum leak. Now look at the QuickFuel billet baseplate...
by storm
Sat Jan 12, 2019 7:06 pm
Forum: Propane Forum
Topic: Air line oiler as simple valve lubricator
Replies: 8
Views: 39

Re: Air line oiler as simple valve lubricator

evranch wrote:
Sat Jan 12, 2019 2:31 pm
I took a 1/4" air line lubricator ($20 at Princess Auto) and installed it in the PCV flow.
So let me get this straight, it is filling up from the oil vapour from the PCV and it is then going into the intake system. Is that correct? Have you got more pics of how it is hooked up?
by storm
Thu Jan 10, 2019 9:28 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

The heads may be a restriction but they aren't the restriction that you see in the logs. Vacuum reading is taken under the throttle plate so the restriction in the logs is above the location of the vacuum reading. If the heads were the restriction you would feel a definition rpm limiting (old VW Bee...
by storm
Wed Jan 09, 2019 7:58 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

The housing is a stock late '70s unit from a Chrysler with 400ci 4-bbl engine. Attached to the housing is large diameter tubing routed to the front of the car through the radiator-support. But, we tried with and without airfilter housing, made no difference at the time. Interesting, can't really te...
by storm
Mon Jan 07, 2019 5:10 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

kPa was ranging from 93 to 83 kPa during the dynorun (1.5" to 4.5" vacuum). That's "HG, you have a vacuum restriction. 4 barrel carbs are measured 1.5" HG, 2 barrel and 1 barrel carbs are measured at 3" HG. the 425 with a 4 barrel baseplate should flow approx 450 cfm at 1.5" HG. You are in effect f...
by storm
Sun Jan 06, 2019 5:48 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

There are probably 2 different problems here. The 1st being the stumble that prompted the creation of this thread. The 2nd being the mid to high RPM lean out as shown by the dyno graph. Sorting out the tanks may have a positive effect on the 1st. The 2nd needs investigation and will also probably ha...
by storm
Sat Jan 05, 2019 12:58 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

Looking at that afr curve 3 things come to mind. 1 you are running very rich under 4000 RPM (just my opinion). 2 if that was a petrol powered car I'd say your fuel pump isn't keeping up above 4000 RPM. To fix that I'd rewire it to get full battery power via relay and/or fit a bigger pump (in the cas...
by storm
Fri Jan 04, 2019 10:30 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

Bennet's LPEFI system was sold to Schwan's Food Delivery company which operates thousands of trucks. Not the same guy then, The guy I was referring to (from memory spelled Bennett and some, including myself, confused him with Dave Bennet from Yella Terra) had a website and he was based in Australia...
by storm
Thu Jan 03, 2019 8:01 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

I noticed on the dyno fairly recently my propane-system starts to become a bottle-neck at around 4500rpm during a full throttle run. An Impco 425 is approximately 450 CFM. At 100% VE (which is race engine territory) a 365 (360 +.030") will run out of puff at 4250 RPM. At 85% VE you are looking at 5...
by storm
Wed Jan 02, 2019 9:26 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

Why do people use such small fuel lines? 6 mm = (approx) 1/4", 8 mm = (approx) 5/16 /", 10 mm =(approx) 3/8". In Australia, and I am assuming NZ as well considering both nations use the same standards, 8mm is used as standard and most people opt for 10mm this leaves the lockoffs as the restriction. ...
by storm
Tue Jan 01, 2019 7:55 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 32
Views: 576

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

BigBlockMopar wrote:
Tue Jan 01, 2019 3:21 pm
The lean-out condition is also confirmed by the car's AFR-gauge which leans out when the issue happens.
I'm not saying that this isn't the case here but an engine can actually be extremely rich and show lean on an O2 gauge under certain conditions (e.g. ignition misfire).