Search found 355 matches

by jono
Wed Mar 20, 2019 8:57 pm
Forum: Propane Forum
Topic: Additional mixture base leaning
Replies: 6
Views: 137

Re: Additional mixture base leaning

and thinking this through a little more before I go swapping my spare old body in to muck about drilling holes ...considering the idle air mixture adjust screw is about 8mm dia and buts up to close a slightly smaller hole inside I could likely make a hole as large as 6mm and use the screw in circuit...
by jono
Fri Mar 15, 2019 7:42 pm
Forum: Propane Forum
Topic: Additional mixture base leaning
Replies: 6
Views: 137

Re: Additional mixture base leaning

Thanks for comment

Mind you the hole I propose is essentially between the same two chambers that the idle air mixture screw is between so I am hoping there will not be those issues you mentioned as it will all before the throttle body
by jono
Mon Mar 04, 2019 4:10 pm
Forum: Propane Forum
Topic: Air line oiler as simple valve lubricator
Replies: 17
Views: 244

Re: Air line oiler as simple valve lubricator

interesting approach but the pcv probably does not deliver consistently in some cases. I installed a cheap version of UCL to the Impco throttle body on my 250 ci inline six. Within ten miles I had to reduce the idle speed by a few hundred rpm , an anomaly I can only suggest caused by freeing up the...
by jono
Tue Feb 26, 2019 5:23 pm
Forum: Propane Forum
Topic: Additional mixture base leaning
Replies: 6
Views: 137

Re: Additional mixture base leaning

Sorry, I should have said I have already got the maximum of three leaning rings in. I need to get a crude lean base rather than the finer tune the rings give. Another method suggested is balance tube but with small bleed holes drilled in the converter end brass fitting to act as a damper to the lean...
by jono
Sat Feb 23, 2019 8:29 pm
Forum: Propane Forum
Topic: Modern setup vs. ancient factory propane specs on tractor
Replies: 15
Views: 363

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

Your idle speed may be depending on how much air slips past throttle butterfly when in no load situation I once used an Impco throttle plate body that is a stretched out circular shape like a round dining table that has rectangular extensions in the middle section - so it was a replacement for a sin...
by jono
Sat Feb 23, 2019 8:10 pm
Forum: Propane Forum
Topic: Modern setup vs. ancient factory propane specs on tractor
Replies: 15
Views: 363

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

it is some while since I looked into the forum - has been so quiet. Am only using a 7" tablet hot wired to my cell phone so have not read the contributions fully I have taken in some figures such as engine size is 4.2 litre but lost the comp ratio. What are idle, working and max rev specs of this p...
by jono
Sat Feb 23, 2019 7:44 pm
Forum: Propane Forum
Topic: Additional mixture base leaning
Replies: 6
Views: 137

Additional mixture base leaning

Having found I cannot lean my 200 mixer out enough using the idle mixture screw - and hand flowed leaner diaphragm selection has become difficult, I am considering trying a permanent hole drilled into the inner housing to lean mixtures further. This is only to get a lean base in prep for dialling in...
by jono
Sat Feb 23, 2019 7:24 pm
Forum: Propane Forum
Topic: air valve flow ratings hand printed
Replies: 3
Views: 445

Re: air valve flow ratings hand printed

Aha, OK Franz. Thankyou. It is good to see you are still fronting to this quiet little forum from time to time I took a break on this little project when the main supplier near me had a staff member state he was not going to go through all his stock to find my desired number - can you believe it? Hi...
by jono
Mon Nov 05, 2018 3:35 am
Forum: Propane Forum
Topic: Fuel odor from model e vent
Replies: 10
Views: 1810

Re: Fuel odor from model e vent

Nice to see you have not blown anyone or anything up with this detectable leak! Mix up a soapy water solution to fill the atmosphere side of the diaphragm and see if it blows bubbles. I prefer silicone -2 diaphragms wherever I can avoid the black hydrin ones. Have you got yellow or black diaphragm? ...
by jono
Thu Sep 13, 2018 10:07 pm
Forum: Propane Forum
Topic: the bigger the better IMPCO
Replies: 0
Views: 452

the bigger the better IMPCO

defying what I learnt over the years, read in Impco training manuals, sizing charts etc, seeing same in practice by others to back up learning - I installed a 200 CA and L on my 1800cc ( what's that , 110.5 cubic inches? ) that revs out to 6500 pretty willingly. This time, I got a great running comb...
by jono
Mon Sep 03, 2018 5:40 am
Forum: Propane Forum
Topic: air valve flow ratings hand printed
Replies: 3
Views: 445

air valve flow ratings hand printed

Is there a good reference to understand the mixer air valve hand printed flow ratings? On my collection of 200 series I have what looks like 90 to 94 on feedback FB ( not facebook !!) air valves, yet to see or be able to read values on clean air diaphragms to be able to recall a figure. Today I open...
by jono
Mon Sep 03, 2018 5:27 am
Forum: Messages
Topic: Access Problems?
Replies: 3
Views: 354

Access Problems?

Has anyone else experienced forum access problems regarding username and passwords?

I only seem to be able to use a powerful servers terminal rather than my mobile devices
by jono
Wed Aug 29, 2018 5:52 am
Forum: Propane Forum
Topic: Vapour solenoid ..know this one?
Replies: 4
Views: 495

Re: Vapour solenoid ..know this one?

Thanks C3.
The orange bit is just a packaging cap
I will investigate with IMPCO thanks
by jono
Mon Aug 13, 2018 5:50 am
Forum: Propane Forum
Topic: Vapour solenoid ..know this one?
Replies: 4
Views: 495

Vapour solenoid ..know this one?

This post will go pear shaped if I can't post the intended photo, so please forgive me if it fails. Wondering if anyone recognises it for starters. It is to be used on a lean bias logic enrichment set up. Wondering if I can bypass original supplier. Also curious if it has a preferred operating direc...
by jono
Mon Aug 13, 2018 5:28 am
Forum: Propane Forum
Topic: Convert from SU / CD Stromberg to Impco recommendations.
Replies: 5
Views: 504

Re: Convert from SU / CD Stromberg to Impco recommendations.

Hello Storm and others, I have seen a 1967 HR GMH ute on propane and it retained the triple Strombergs or SU's that were on it I only got a quick look at it once, at night 20 years ago so memory is vague I think it was set up on the old basis of just supplying vapour via a hose to all three carbs an...