Search found 131 matches

by Pinger
Sat Aug 01, 2020 12:35 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I think the problem (as it is but I can probably live with) is in the PCV. Recall I disconnected the PCV inlet tune from the inlet tract where it was drawing gas through the crankcase and it now draws from atmosphere. The PCV valve is a shuttle valve with three modes. Closed (engine off and/or inle...
by Pinger
Sat Aug 01, 2020 10:31 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Releasing the throttle from higher revs will cause the cut off to operate but, after a period of not a lot of gas going in, the actuator will need to open up to get the mixture correct. The lambda will tell it that it is now a bit rich so it will slowly close to get it correct. It closes down slowl...
by Pinger
Sat Aug 01, 2020 10:27 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I think the problem (as it is but I can probably live with) is in the PCV. Recall I disconnected the PCV inlet tune from the inlet tract where it was drawing gas through the crankcase and it now draws from atmosphere. The PCV valve is a shuttle valve with three modes. Closed (engine off and/or inlet...
by Pinger
Fri Jul 31, 2020 1:25 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

PCV system under investigation as potential source of disparity of actuator settings idle and out of idle. Recap. My PCV inlet is now independent of the induction system upstream of the throttle plate after crankcase explosion. The PCV valve should be closed during idle (mine is passing a slight amo...
by Pinger
Fri Jul 31, 2020 8:09 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I am genuinely confused as to if there is any point in reinstalling the PV again. All I can see happening is that I will open the PV for out of idle so that I can weaken with the bias in order to weaken the idle and thus move the idle default position closer to the current default of 160. But, weake...
by Pinger
Fri Jul 31, 2020 7:55 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I'm intrigued by you saying the bias screw fell out? What was on the end of it, a simple cone or a spring and roller? If it was a cone, you're tweaking the wrong one, that's the idle bypass. . It is as below - confirmed by Tinley. If the mixer has been correctly sized for the engine airflow, it wil...
by Pinger
Thu Jul 30, 2020 10:11 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I need to go back and do it all again with the PV and a functioning lap top. Tomorrow.
by Pinger
Thu Jul 30, 2020 6:35 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I've been looking for images of the type of mixer I have and the nearest I can find is as per the linked photo below. Mine doesn't have small holes that most mixers seem to have. With mine, the round hose connection goes to a rectangular cross section protruding very slightly into the area that is o...
by Pinger
Thu Jul 30, 2020 1:20 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

With the actuator in place, bypass fully screwed in actuator positions are: Default circa 160. Idle 80-100 Out of idle 150 When I release the throttle from say 3000rpm and as the fuel is reinstated below the 1300rpm ORCO the actuator goes to circa 160 and very slowly closes to 80-100. I set the 'bel...
by Pinger
Wed Jul 29, 2020 6:02 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Reducer fitted but calibration not without problems. I should mention first that I spoke to Tinley Tech to clarify which adjustment screw was which and also asked advice in the event of the truck not starting as my petrol system is down. Unexpectedly, I was told that I may have to back the bias scre...
by Pinger
Fri Jul 24, 2020 6:41 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I set the out of idle above steps higher so if it starts to go lean for any reason, it has some headroom to prevent lean running. Running lean when cruising at 75 mph for 200 miles a time isn't a good idea and without running with the laptop sitting in the passenger footwell so I can see what it is...
by Pinger
Fri Jul 24, 2020 12:09 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Rich mixture non start was a surprise when it happened. What about above and below steps? Currently with a default around 160 my out of idle steps are plus and minus 40 - which equates to+- 25% of default. Same percentage of whatever default value I arrive at? Looking at your video, your out of idle...
by Pinger
Fri Jul 24, 2020 9:01 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Thanks Gilbertd - this looks achievable in a short time span. I am absolutely aiming for the actuator being slightly more open at idle than out of idle. When I replaced the hose between reducer and mixer and relocated my actuator I noticed the actuator was closed. Presumably it immediately goes to i...
by Pinger
Thu Jul 23, 2020 6:51 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

If the mixer has been correctly sized for the engine airflow, it will be about right straight from the box. It might need the top screw adjusting slightly but not by much. If I remember right, one screw is marked Idle so you would expect it to be the idle bypass but that is wrong and it isn't (obvi...
by Pinger
Thu Jul 23, 2020 11:42 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Duly ordered it will be here tomorrow. The power valve arrived earlier in the week.
Once installed, how long should I expect to spend setting it up?
by Pinger
Thu Jul 23, 2020 9:41 am
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

That's the one I was looking at - and I think I'll order it (came so very close to ordering the repair kit last night!). Your point re bolts is valid. They don't look so bad but until the spanners are out..... Just out of interest, what gives the R90s its superior flow capability? Is it something as...
by Pinger
Wed Jul 22, 2020 8:42 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Yes it will fit. Perfect! Than I'll order the OMVL repair kit and rebuild it. Another thought I had re wear is that the truck has only done 40,000 miles not all of them on LPG as the previous owner didn't have an LPG station close to where they lived and just ran it on petrol. The conversion to LPG...
by Pinger
Wed Jul 22, 2020 8:36 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Some engines spark all cylinders on start up and that can cause a backfire, there is anyway more risk of a backfire at cranking speeds All five of mine have been on opening the throttle and are lean mixture related. After the last one, it took a few seconds for the engine to run on all cylinders ag...
by Pinger
Wed Jul 22, 2020 8:09 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

Gilbertd wrote:
Wed Jul 22, 2020 7:54 pm
Yes it will.
Is that yes the R90E repair kit will fit my R90S?
by Pinger
Wed Jul 22, 2020 6:53 pm
Forum: Running a V8 on LPG
Topic: Advice please!
Replies: 231
Views: 4990

Re: Advice please!

I'm just wary of the 190hp rating as that is some 70hp shy of where I want/need to be.
I notice that 190hp is for the BRC AT90E and the OMVL R90E doesn't quote hp but 'up to 6 litres'

I take it the R90E repair kit wont fit my R90S?