LC100.4.5/gas coversion,pros/cons.
Submitted: Thursday, Jun 08, 2006 at 21:09
ThreadID:
34747
Views:
2025
Replies:
3
FollowUps:
2
This Thread has been Archived
Bobthe...
Hi,everyone.Pros/Cons of 4.5.petrol,LC100 on gas? I here toyota engines are not as gas friendly as others.I have been told the head won't last more than 3 years. The mechanic advised,$2800 for gas kit fitted,3 years later $3000 to replace head. His advise was stick with petrol.You will never be in front. I travel around 20000kms or so a year.I would be grateful for long term users opinions and suggestions. Thanks in advance...
Reply By: Beast of Bodmin - Thursday, Jun 08, 2006 at 23:00
Thursday, Jun 08, 2006 at 23:00
Hi,
If you take a trawl through the recent archive, you'll notice my threads on the lpg head replacement l've just done.
Basically - The 4.5 1FZFE has soft valve seats.
Mine has a 10yr old lpg kit and 330,000km. No more valve clearance available, so left with the choice of bodging, aka valve stem grind or grinding shims to suit.
I went the brand new genuine casting route and fitted it with hard seats and all the gear but re-used my cams. All told l expect it was close to a $5k job. And l did all the on vehicle work myself!
If this was 12mths ago, l would have not worried about fuel prices and ran ULP/PULP only. Now, lpg is a must. Therefore on this basis it will pay for itself quickly.
I heard different stories about oil feeds into the upper cyl but settled on staying without the kit as l have been convinced they cause a build up of carbon and stop proper heat disipation of the valve into the valve
seat.
Hope this helps.
BoB
AnswerID:
177564
Follow Up By: Bobthe... - Friday, Jun 09, 2006 at 19:45
Friday, Jun 09, 2006 at 19:45
I appreciate your
feedback beast of bodmin.what are the dates of your posts please?
FollowupID:
433857