IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
User status: Offline
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getting a new rebuild after the piston rings going (i think)
i ran this one in for 1000 miles under 3.5k rpm but been told by a couple of people to run it in hard
anyone got any advice?
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dan_c4rsa
Member
Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline
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drive it well but dont redline it etc.
if you give it more oomph the rings seal better but your engine doesnt last as long or something.
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Ste L
Member
Registered: 3rd Jul 06
Location: Manchester Drives: 106 16v Rallye
User status: Offline
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rev quite high, then let it over run, keep repeating, help's the ring bed in proper apprently
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IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
User status: Offline
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do that for how long?
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Ste L
Member
Registered: 3rd Jul 06
Location: Manchester Drives: 106 16v Rallye
User status: Offline
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have a read of this
http://www.mototuneusa.com/break_in_secrets.htm
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Ben ev
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Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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500 miles nothing above 3k on mineral oil. varying engine speed and load etc, no motorway miles. things like 4th gear @ 1500rpm accelerate hard untill 3k then back off. 2nd gear down a big hill etc.
oil and filter (synth) then start taking it up to say 5k. after 1500miles personally i would do oil and filter again then start driving harder. i wudnt redline it personelly till about 3000miles to be safe.
the first 5miles are rumoured to be the most important
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jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
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i did mine simular to ben.
i filled my engine with 10/40 mineral oil, ran it for 20mins, then changed the oil + filter, drove it for 500miles keeping it under 3500rpm, changed oil + filer, ran it for another 500miles gradually taking it to about 5500rpm, then changed the oil + filter (good quality oil) and replaced the engine coolant, then drive it as u would normally
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dan_c4rsa
Member
Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline
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im getting mine done on the dyno after rebuild 
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Seems that everyone has their own opinion on this
Drives supercharged Tec with torque  
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Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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ive always thought you just keep the thing under 4k for a good few thousand miles then do a oil change and drive it gently as no mater what you do if you thrash a engine its gona bugger up quicker than if you drive a engine sensably. up to you tho. mines only got 57k on the clock and the only problem it has is the sump is weaping.
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Ben ev
Member
Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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quote:
Originally posted by dan_c4rsa
im getting mine done on the dyno after rebuild
its a scary thing to watch with an expensive build. as soon as it fires for the very first time its straight to 4k @ 1/2 load. 
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IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
User status: Offline
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well i kept it under 3.5k for 1000miles with oil and filter change at 500 and 1000 miles and its fucked 5k later
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craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
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when my mate re built his c20let.they fired it up let it tick over for a while.then drove it up and down the road a few times then thrashed it.his is still running fine.ive heard people saying not too thrash it just load the engine in different gears at different rpm.
[Edited on 05-11-2007 by sri power]
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
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quote:
Originally posted by IvIarkgraham
well i kept it under 3.5k for 1000miles with oil and filter change at 500 and 1000 miles and its fucked 5k later
proabaly didnt load up the engine enough and cause bore glaze.
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
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quote:
Originally posted by Ste L
have a read of this
http://www.mototuneusa.com/break_in_secrets.htm
thats the method to use^^^
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