Search found 796 matches

by storm
Wed Oct 20, 2021 2:15 pm
Forum: Messages
Topic: Tagging members
Replies: 2
Views: 5481

Tagging members

Hi Frank phpBB has the ability to notify members when they are mentioned using a certain method (e.g. @Frank) in a topic. There is an extension called Simple Mentions that enables this. It would be handy as the forum is not visited as much by the old regulars as it used to be and people who come her...
by storm
Wed Oct 20, 2021 2:04 pm
Forum: Propane Forum
Topic: HELP!! 2002 F150 7700,intermittent start.
Replies: 3
Views: 3212

Re: HELP!! 2002 F150 7700,intermittent start.

Hi, I'm sorry to say without much more information I am unable to help much but Franz and C3H8 will probably be able to offer guidance. Franz is an LPG guru who is also from Texas and C3H8 from Canada is a wealth of knowledge.
by storm
Fri Sep 10, 2021 5:05 am
Forum: Your Project
Topic: Australian L67 build
Replies: 10
Views: 11910

Re: Australian L67 build

A bit of an update on this. The old Ecotec 3.8 V6 had another problem which meant I had to swap the engines over it is still running as an Ecotec not an L67. What happened to the original engine was it spun a cam bearing and snapped the camshaft between cylinders 2 and 3. So I did a block swap and h...
by storm
Tue Aug 31, 2021 4:33 am
Forum: Propane Forum
Topic: Why would a propane engine need to "warm up" to idle low?
Replies: 3
Views: 2990

Re: Why would a propane engine need to "warm up" to idle low?

All engines need a little warmth to idle well, LPG is no different. In my experience coolant flow through the regulator does impact on idle quality. When an engine is first started coolant isn't flowing and the coolant in the regulator is required to vapourise -30 degree liquid LPG. Once coolant is ...
by storm
Thu Jul 29, 2021 3:25 pm
Forum: Propane Forum
Topic: having trouble with new install (SBC in boat)
Replies: 15
Views: 7264

Re: having trouble with new install (SBC in boat)

The TBI manifold was designed and fitted by OEM at a time where economy was what most people wanted. The TPI manifold released alot of power from otherwise restricted engines. A good dual plane or single plane will perform very well compared to the TBI. Fix your restriction, which would have a negat...
by storm
Fri Jul 23, 2021 3:28 pm
Forum: Propane Forum
Topic: detonation
Replies: 4
Views: 3072

Re: detonation

Good quality LPG has an octane rating of 105-110 which is ideal for 11-1 compression ratio, alloy heads can afford another full point. The thing is the higher the comp ratio the more critical the timing is. If you get a load of LPG that has alot of Butane in it the octane goes down so if you are alr...
by storm
Fri Jul 23, 2021 5:47 am
Forum: Propane Forum
Topic: detonation
Replies: 4
Views: 3072

Re: detonation

Hi Long time follower, first time posting. My engine was built base on some post I've read over here. I come to a dead-end and need advise. Truck 2WD 1993 Ramcharger Engine: 408 magnum engine with OOTB Eddy head. Barrel intake. stock throttle body for now. Cast 1993 exhaust manifold. 12 CR static, ...
by storm
Mon Jul 12, 2021 5:38 am
Forum: Propane Forum
Topic: drilling LPG injector bigger, but loosing power
Replies: 25
Views: 10274

Re: drilling LPG injector bigger, but loosing power

If the problem happens under load you're not going to see it at idle.
You really need to do the tests under load where the engine is misfiring.
by storm
Mon Jul 12, 2021 5:27 am
Forum: Propane Forum
Topic: having trouble with new install (SBC in boat)
Replies: 15
Views: 7264

Re: having trouble with new install (SBC in boat)

If you can try to refit the regulator so the vapour hose is at the bottom rather than the top. The reason for this is it helps drain the regulator of "heavy ends" which is like a thick oily substance that can block it up. Plug looks good. I can only see 1 timing line which if its the idle timing lin...
by storm
Sat Jul 10, 2021 11:17 pm
Forum: Propane Forum
Topic: having trouble with new install (SBC in boat)
Replies: 15
Views: 7264

Re: having trouble with new install (SBC in boat)

When reading the plugs for timing you are looking for 2 distinct lines or 1 section of colour between 2 lines on the ground strap. @Tom68 mentioned the ash, while I do not agree that it is oil burning it is an indication of contamination and it makes it very difficult to see anything on the ground s...
by storm
Sat Jul 10, 2021 4:06 pm
Forum: Propane Forum
Topic: having trouble with new install (SBC in boat)
Replies: 15
Views: 7264

Re: having trouble with new install (SBC in boat)

Now the problem I've got is since the LPG conversion (about 20-25hrs of use now and around 300L of LPG) it is lacking power. It's a monofuel conversion but still keeps the TBI and ECU for ignition control (HEI), knock sensor, TPS/MAP etc There's your 1st problem The mixer is the Impco 300A (I presu...
by storm
Wed Jul 07, 2021 3:32 pm
Forum: Propane Forum
Topic: drilling LPG injector bigger, but loosing power
Replies: 25
Views: 10274

Re: drilling LPG injector bigger, but loosing power

Been thinking about this through the night, when I should have been asleep.
What's your plug gap? Try changing the gaps on all the plugs to smaller gaps.
Many OEMs are now about 1.5mm, go down to 1.3mm and test it, then try 1.1mm and test it, then try 1mm and test it.
by storm
Wed Jul 07, 2021 4:21 am
Forum: Propane Forum
Topic: drilling LPG injector bigger, but loosing power
Replies: 25
Views: 10274

Re: drilling LPG injector bigger, but loosing power

kikkegek wrote:
Wed Jul 07, 2021 4:07 am
hahahaha...how am I going to pull plug leads under loads over 30% TPS on the road hahahaha
dyno :wink:
by storm
Wed Jul 07, 2021 3:45 am
Forum: Propane Forum
Topic: drilling LPG injector bigger, but loosing power
Replies: 25
Views: 10274

Re: drilling LPG injector bigger, but loosing power

That's the thing. Engine idles fine and is good up to 30%tps... So pulling leads at idle will not do a thing. I'm going to quote myself so it's clear I never said do it while the engine is idling :P The only way to test properly is to pull a plug lead while the engine is running and misfiring, just...
by storm
Wed Jul 07, 2021 2:22 am
Forum: Propane Forum
Topic: drilling LPG injector bigger, but loosing power
Replies: 25
Views: 10274

Re: drilling LPG injector bigger, but loosing power

I'm just going by the evidence in the screenshot that clearly indicates an ignition issue before the other signals change. To my logic, which is not fullproof, If it was an injector or another part of the fuel system the first thing to show in the gauge timeline would be one of them rather than an i...