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running in a rebuilt motor ?
Posted: Sat Feb 15, 2003 4:20 pm
by Ryan
Gday all, just curious, my L28 engine (2.8 petrol) has just been rebuilt
new pistons. rings, rods, bearings, seals and crank, honed......... everything basically, just wondering tho what i need to do when i first start to drive it again and how do i run it in ? do i run standard oil? and can i run it on premium unleaded to start with etc ?
i know i could do all of this with the old motor but i dont want to cause any damage to the new engine
Cheers
Ryan
Posted: Sat Feb 15, 2003 4:33 pm
by Punchy
just drive it
me = mechanic/engine rebuilder
with todays soft tension rings. quality hone finshes on the bores and superior quality parts..they are as good as new..if not better..
If you dont load the thing up....your more likely not to settle the rings..and consume oil giving you the false impression that theres something wrong..
get into it and enjoy the new toy
change the running in oil at 1500 k's
ps;;after she's settled...run a nice synthetic
Posted: Sat Feb 15, 2003 4:36 pm
by Ryan
thats what i was hoping to hear
just wanted to make sure tho cause my car has been off the road long enuff lol
Cheers
Ryan
Posted: Sat Feb 15, 2003 6:20 pm
by nissang60
just as punchy said...good luck with ya new engine..just dont drive it like a rev head until your sure it all has bedded in and the bolts are all tight..
.i done some big jobs on different cars and i found a recheck on ALL the external nuts and bolts (on the job you done) after a bit of a run wont hurt a bit..you might find 1 or 2 that settle in after a short run and appear a bit loose..just a quick check and retension wont go astray...good luck and happy motoring..
Posted: Sat Feb 15, 2003 7:24 pm
by M&M Custom Engineerin
when you change the oil for the first time drain it into a clean container and then have a look to see if any crap has come out.
Posted: Sun Feb 16, 2003 12:06 am
by Ryan
thanks everyone for the replies..... one last question.... will it be better to run it on premium ?? sorry if these are stupid questions but theres only one way to find out :wink:
Cheers
Ryan
Posted: Sun Feb 16, 2003 5:57 am
by M&M Custom Engineerin
it wont make any difference
Posted: Sun Feb 16, 2003 8:23 am
by Bush65
Don't over-rev it. Try to string together some short runs with load on the motor (accel or uphills so that gas pressure forces the rings out), followed by backing off to pull some extra lube up around the rings.
Posted: Mon Feb 17, 2003 5:56 pm
by 2car
Punchy wrote:just drive it
me = mechanic/engine rebuilder
with todays soft tension rings. quality hone finshes on the bores and superior quality parts..they are as good as new..if not better..
If you dont load the thing up....your more likely not to settle the rings..and consume oil giving you the false impression that theres something wrong..
get into it and enjoy the new toy
change the running in oil at 1500 k's
ps;;after she's settled...run a nice synthetic
Hey Punchy (or anyone else that knows),
A little off topic, but can you name a good source for Chev pistons? I am after cast pistons with around 8 to 8.5:1 compression ratio. 3.875" +0.030" with a 1.560" compression height. They will not be highly stressed, so I don't need anything fancy.
Cheers
Ben