Search found 628 matches

by storm
Wed Apr 24, 2019 11:14 pm
Forum: Propane Forum
Topic: Introduction and question on water injection
Replies: 1
Views: 11

Re: Introduction and question on water injection

G'day Troy Water or Water/Meth injection has 2 purposes that are closely connected. 1st is to cool the combustion process, which helps to raise the knock threshold. 2nd is to raise the knock threshold of the engine by increasing the octane rating. With regards to cooling the combustion process it wi...
by storm
Fri Apr 19, 2019 11:32 pm
Forum: Propane Forum
Topic: Valid email for GasResearch in Australia
Replies: 5
Views: 37

Re: Valid email for GasResearch in Australia

Not really, there may be some YouTube clips but I've never seen any. They take time to learn how to setup and the only way to learn is by doing it hands on. For a Big Block Buick I'd use 2 500 cfm units setup so that they are staggered. Having said that if you could get a dual quad manifold for the ...
by storm
Fri Apr 19, 2019 4:38 pm
Forum: Propane Forum
Topic: Circuit Trackday with the '73 Dart
Replies: 2
Views: 27

Re: Circuit Trackday with the '73 Dart

I am so jealous, that would have been interesting and fun. Did you do any logging? What times did you pull? Valiants (Australian version of your car) didn't handle all that good from factory and took alot of work and money to get them to stick to the road, doing that in the late 60s early 70s would ...
by storm
Fri Apr 19, 2019 4:20 pm
Forum: Propane Forum
Topic: Valid email for GasResearch in Australia
Replies: 5
Views: 37

Re: Valid email for GasResearch in Australia

They can be fiddly things to setup Mike. I love mine on my Ecotec V6 but there is still, after more than 10 years, a flat spot just after idle tip in that I am unable to get rid of. It only occurs under load. They desperately need a progression circuit adjustment that is easier to do than pushing a ...
by storm
Thu Apr 11, 2019 3:31 am
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 39
Views: 1047

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

C3H8 wrote:
Wed Apr 10, 2019 1:49 pm
Sorry guys. That was me that mentioned Bennet early on in this post.
There are multiple people being talked about but they have different spelling. Jono and myself are referring to an Australian with the spelling of Bennett.
by storm
Tue Apr 09, 2019 9:08 pm
Forum: Propane Forum
Topic: Adding an elec. fuelpump to an Impco vaporizer+425 setup
Replies: 39
Views: 1047

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

Mention of Bennett who tinkered with LPG...this most likely John Bennett in Melbourne? Nope he was from Sydney. He didn't tinker with LPG he developed a liquid phase system that become the basis for systems like Orbital (now owned by SprintGas from memory). I called him when I was doing the engine ...
by storm
Fri Mar 22, 2019 4:57 am
Forum: Propane Forum
Topic: What does the RCV valve do ?
Replies: 3
Views: 59

Re: What does the RCV valve do ?

The regulator control valve (RCV) is mounted on the regulator cover. The RCV is a one way check valve that opens at 8-10“ of water column and permits quick response of the secondary diaphragm during wide open throttle operation. 1994-1998 Medium Duty LPG Service Manual Supplement http://www.qtww.com...
by storm
Tue Mar 19, 2019 3:09 am
Forum: Propane Forum
Topic: Performance ford 351 v8 build
Replies: 3
Views: 89

Re: Performance ford 351 v8 build

If I were to fit 2 GRAs to a Cleveland of 393 CI I'd fit a 350 as the primary and a 510 as the secondary. That will theoretically give you 860 cfm, which is more than enough for a 6500 rpm street Cleveland, but there is alot of debate on GRA cfm ratings. AFAIK GRA doesn't mark their throttle bodies ...
by storm
Mon Mar 18, 2019 2:59 pm
Forum: Propane Forum
Topic: Performance ford 351 v8 build
Replies: 3
Views: 89

Re: Performance ford 351 v8 build

1st question, where are you located? I assume Australia or New Zealand but it would be good to know so the correct advice can be offered. Unless the engine was built many years ago I doubt it has Gas Research cam. GRA stopped selling cams years (it would be well over 10 years) ago. A few things will...
by storm
Thu Mar 07, 2019 1:01 am
Forum: Propane Forum
Topic: Lifter pump up ?
Replies: 1
Views: 61

Re: Lifter pump up ?

Non EFI gas systems (IMPCO, GRA, etc) back fire on ecotecs mostly at start up or under heavy load at very low rpm. They run rough because the backfire goes as far back as the regulator and it takes a moment for the regulator to refill the Gann hose between the regulator and the mixer. In my experien...
by storm
Sat Feb 23, 2019 9:44 pm
Forum: Propane Forum
Topic: air valve flow ratings hand printed
Replies: 3
Views: 468

Re: air valve flow ratings hand printed

I remember when I setup my 5.7 stroker with the GRA throttle body I had an enrichment injector for stoichiometric. It wasn't a fiddly system but it wasn't all that great either. I stear clear of those types of things now.
by storm
Tue Feb 19, 2019 2:20 am
Forum: Propane Forum
Topic: Modern setup vs. ancient factory propane specs on tractor
Replies: 15
Views: 413

Re: Modern setup vs. ancient factory propane specs on tractor

However propane is not really "leaner", it just has lower energy content... No and yes. LPG is by definition leaner. Lambda 1 on petrol is 14.7 yet 15.5 on LPG. Full power .85 Lambda is about 12.5 (12.47 to be exact) on petrol and 13.2 (13.17 to be exact) on LPG. LPG does have lower calorific value...
by storm
Mon Feb 18, 2019 12:49 am
Forum: Propane Forum
Topic: Modern setup vs. ancient factory propane specs on tractor
Replies: 15
Views: 413

Re: Modern setup vs. ancient factory propane specs on tractor

The fuel efficiency is interesting. The timing must be pretty well spot on for LPG for it to do so well.