Search found 284 matches

by Pinger
Tue Apr 20, 2021 10:46 am
Forum: Having Problems ?
Topic: VSR prevention tips.
Replies: 26
Views: 494

Re: VSR prevention tips.

On the valve seat issue, I've been doing a bit if reading based on the engine I put in the pajero, which was out of a Magna (Australia family type car). These came out with petrol, dual fuel or lpg only. Apparently the intake valves and seats are the same between all engines/heads, but in the log o...
by Pinger
Fri Apr 16, 2021 10:41 am
Forum: General Discussion
Topic: Timing advance processor
Replies: 31
Views: 841

Re: Timing advance processor

I like the theory of measuring EGT to set ignition timing, not sure if it will work but would be interesting to see how such tests go. Slightly different subject but I know some piston engine'd aircraft pilots set mixture using EGT. They may all watch EGT to make sure the temp isn't too high but so...
by Pinger
Fri Apr 16, 2021 10:27 am
Forum: General Discussion
Topic: Timing advance processor
Replies: 31
Views: 841

Re: Timing advance processor

EGT is another really good point also, and not sure if I have come across anyone discussing monitoring that for optimising timing. That also lines up with things that I mentioned in another thread, where the Russians kept mentioning advancing the timing to save exhaust valves, as apparently the lpg...
by Pinger
Thu Apr 15, 2021 9:12 pm
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

Just to update and finish off this thread. The range rover is back up and running. All valves and seats had some wear and pitting, so all where replaced, the seats with Lpg compatible ones, which arnt just harder, but are sintered with materials that lubricate, and stop the valve and seat micro wel...
by Pinger
Thu Apr 15, 2021 7:00 pm
Forum: General Discussion
Topic: Timing advance processor
Replies: 31
Views: 841

Re: Timing advance processor

We broadly agree mate but I would repeat that some engines with hydraulically controlled VVT do compare cam position sensor pulses to crank position sensor pulses to know how far cam timing is advanced/retarded. Might have an electrically controlled hydraulic master solenoid that feeds oil to a rem...
by Pinger
Thu Apr 15, 2021 3:24 pm
Forum: General Discussion
Topic: Timing advance processor
Replies: 31
Views: 841

Re: Timing advance processor

I recall reading in the manual for my car that ignition timing is based on the crank sensor angle and injection based on the cam sensor, or something to that effect. I still can't understand why, as they both do the same thing so why not just base it all off the one sensor (cam would be logical). L...
by Pinger
Thu Jan 21, 2021 11:48 am
Forum: General Discussion
Topic: i am so satisfacted. greetings
Replies: 1
Views: 708

Re: i am so satisfacted. greetings

Welcome aboard Wally.
by Pinger
Mon Jan 11, 2021 1:33 pm
Forum: General Discussion
Topic: Brim to brim...
Replies: 80
Views: 9089

Re: Brim to brim...

Bit of an update. I did get some dash representation of what's going on with mixture in the form of an AFR gauge - see pic. The number it shows seems to correspond to petrol stoichiometry as when I checked it against O2 Voltage showing on the AEB software when the O2 Voltage was 0.5V and the display...
by Pinger
Mon Jan 11, 2021 12:53 pm
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

]Or one where they don't expect you to do any maintenance, just throw it away when it starts to wear out. In fairness to solid tappets, they tend not to need adjustment - if the valves are made of decent material that is.... Our 'built in obsolescence' these days seems to be electronics. £1700 for ...
by Pinger
Mon Jan 11, 2021 12:44 pm
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

Some Ford engines use the same arrangement for the tappets as that shown. The Duratec ones I think are where that started. The later Zetecs were shimmed. Though those all 4 pot engines obviously. Not sure is there's a technical reason that stops a hyd tappet being used between a cam lobe and a valv...
by Pinger
Mon Jan 11, 2021 9:46 am
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

The fecker is out! Result! Well done that man! Re one piece tappets - that makes for a very high maintenance engine. On a par with a motorcycle engine. I think it was yourself that mentioned (it must have been on this thread even if not you) that solid tappets were a Jaguar preference. If Ford were...
by Pinger
Sun Jan 10, 2021 10:54 am
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

Thanks for the support guys and some good suggestions there. The internet says, so how could it be wrong, that thread locker hates acetone and chloroform. I unfortunately am right out of the latter, 🤣 bit have some acetone in the cavity in the crank now behind an M12 bolt to hopefully spread it und...
by Pinger
Sat Jan 09, 2021 2:29 pm
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

So that's where I'm at. I have had very bad luck with easy outs in the past so I don't want to break one in the crank here. But maybe I'm into that level now. Really I need an engine... Very bad luck. I suspect you are about right re easy outs and at 'that level now'. Two things I'd try before goin...
by Pinger
Wed Jan 06, 2021 10:22 am
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

Not that you asked me, and I don't actually know lol, but I have heard of stiffer springs used on inlet valves on high boost engines for this reason (not that the supercharger provides high boost). I suppose it wouldn't be too difficult to calculate how much of a difference having a bar or so of bo...
by Pinger
Tue Jan 05, 2021 4:24 pm
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

On the supercharged engines it is nearly always the inlet valves that suffer and go tight, hardly ever the exhaust as you would expect with more usual vsr. I believe this down to the high intake air temperature, it is not that uncommon for non gas converted R/R s/c to suffer from this, although con...
by Pinger
Tue Jan 05, 2021 10:49 am
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

Couple of points. Regarding comments of surprise that any VSR has occurred on inlet valves (vs exhaust) my understanding is that it is inlet valves that a lube system is there to protect. The lube being burned by the time the exhaust valves have exposure to it. Engine in question - isn't it derived ...
by Pinger
Mon Jan 04, 2021 4:17 pm
Forum: General Discussion
Topic: Engineering company suggestions for hard valves/seats
Replies: 56
Views: 3880

Re: Engineering company suggestions for hard valves/seats

This.... I couldn't work out from your pics which was inlet cam and which was the exhaust. I figured it looked to be the one with the main timing chain on it but your pic of the tappet push down thingy seemed to show it as being the one driven by the single chain. I would assume that main chain has ...
by Pinger
Mon Dec 07, 2020 1:45 pm
Forum: General Discussion
Topic: Brim to brim...
Replies: 80
Views: 9089

Re: Brim to brim...

Perhaps the best way of maximising range from your current setup (assuming mixture etc is already correct so the engine is running most efficiently) would be to bend the float arm in your tank so your tank will take more gas. Not so desperate as want to open up the tank but your point is valid. Re ...
by Pinger
Mon Dec 07, 2020 12:01 pm
Forum: General Discussion
Topic: Brim to brim...
Replies: 80
Views: 9089

Re: Brim to brim...

Thanks LPGC. I'll give that some thought and see how to best maximise my fill. Typically a working day for me involves a 100-130 mile run. If I could get two days from one tankful it would be a useful time saver (just from the stop and the payment aspect though I mainly pass the filling station anyw...
by Pinger
Sun Dec 06, 2020 6:10 pm
Forum: General Discussion
Topic: Brim to brim...
Replies: 80
Views: 9089

Re: Brim to brim...

Yes - that's the set-up. Just around the corner - if you see the toilets, you've gone too far. It is LCD and coupled to the cashier's desk though. The CCTV is to stop bottle filling and let them know there's a customer there I think. Genuinely, I had no idea the temp compensation was used. Is this t...