Search found 9 matches

by Tom68
Sat Aug 18, 2018 10:30 pm
Forum: Propane Forum
Topic: Engine likes more advance with iridium sparkplugs...?
Replies: 4
Views: 152

Re: Engine likes more advance with iridium sparkplugs...?

I run fixed mechanical advance on my 327, last time I looked it would have been around 30 degrees, also running an additional 14 degrees of vacuum tapped below the butterflies. Dual fuel (at the same time when the secondaries are open) so I use 98 octane petrol. I'd run more timing but don't have a ...
by Tom68
Sun Aug 12, 2018 6:53 am
Forum: Propane Forum
Topic: Based on your experience ?
Replies: 2
Views: 82

Re: Based on your experience ?

For the most part I think there's more oxidation and crud build-up than wear. Yer it's pretty cruddy. Gas nozzle appears hammered, sharp inner edge, bit chafed as is the gas jet, and one of the guides has a fair bit of wear. I guess if the guide was sticking it would hamper travel, so just reduced ...
by Tom68
Sat Aug 11, 2018 10:36 pm
Forum: Propane Forum
Topic: Based on your experience ?
Replies: 2
Views: 82

Based on your experience ?

How would you expect this worn out CA225FB 93 to perform on the car.

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by Tom68
Sat Jul 07, 2018 5:19 am
Forum: Propane Forum
Topic: Ford 4.9/300 Propane Problems
Replies: 21
Views: 1382

Re: Ford 4.9/300 Propane Problems

Depressing the primer button at idle on my 300A equipped 327 that I'm happy with stalls the engine. On my Commodore that's lean under load with Model N-L reg' depressing the button at idle also stalls the engine. Reading posts in this thread I understand that shouldn't be the case, I always thought ...
by Tom68
Sat Jun 23, 2018 11:17 pm
Forum: Propane Forum
Topic: Lean acceleration and steady speeds above 50 mph.
Replies: 8
Views: 234

Re: Lean acceleration and steady speeds above 50 mph.

one trick i used to fix my 225 setup was to use a switch ( in my case ecu controlled ) to trigger a HP shut off solenoid, mounted on the LP side , and short cut some mixture ( via a mig jet pill ) to the throttle body initially i used vacuum/ boost as the switch but found tps position to be an easi...
by Tom68
Sat Jun 23, 2018 11:15 pm
Forum: Propane Forum
Topic: Lean acceleration and steady speeds above 50 mph.
Replies: 8
Views: 234

Re: Lean acceleration and steady speeds above 50 mph.

I used a Jaycar mixture display years ago, they aren't accurate Please check the PCM and see if it is throwing any fault codes. Lots to ponder, Jaycar unit at least confirms what I felt. Advanced the interrupter wheel 8 degrees on my VN, it went quite well, would like to give the VY more timing, in...
by Tom68
Sat Jun 23, 2018 4:23 am
Forum: Propane Forum
Topic: Lean acceleration and steady speeds above 50 mph.
Replies: 8
Views: 234

Re: Lean acceleration and steady speeds above 50 mph.

Let me try some linking on this forum.

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by Tom68
Sat Jun 23, 2018 4:07 am
Forum: Propane Forum
Topic: Lean acceleration and steady speeds above 50 mph.
Replies: 8
Views: 234

Re: Lean acceleration and steady speeds above 50 mph.

3.8 Ecotec. Kit, fitted by a licensed mate with lots of experience, car had been back to him many times over the years, has always lacked power on Gas. Most problems I've ended up finding and correcting, e.g. cracked porcelain inside body of plug after he had fitted them, some time after unfortunate...
by Tom68
Sat Jun 23, 2018 1:21 am
Forum: Propane Forum
Topic: Lean acceleration and steady speeds above 50 mph.
Replies: 8
Views: 234

Lean acceleration and steady speeds above 50 mph.

Impco CA225FB, LPG Model N-L regulator, on 2002 Holden V6. Have a simple led mixture display tapped into an ego sensor, it goes full lean (lights out) on acceleration and light load cruise. Idles a little rich, but at least that gives it a manifold full of acceleration air fuel. Not running feed bac...