cpfcvr6 6 Posted June 3, 2014 Report Share Posted June 3, 2014 new engine 145-189psi (10-13bar)wear limit 109psi (7.5bar)Max difference between cylinders 44psi (3bar)source; Bentley manual good info! Link to post Share on other sites
Sump_slammer 23 Posted June 4, 2014 Report Share Posted June 4, 2014 Whats the best way of checking the stem seals? Head off valve springs off and pop the valve out slightly? How much play is exceptable? Link to post Share on other sites
Sump_slammer 23 Posted June 4, 2014 Report Share Posted June 4, 2014 Sorry not stem seals, valve guides. Link to post Share on other sites
CALICO 130 Posted June 4, 2014 Report Share Posted June 4, 2014 Great thread revival. Sorry I cant answer your questions though. VR6Pete 1 Link to post Share on other sites
VR6Pete 1,455 Posted June 6, 2014 Report Share Posted June 6, 2014 Whats the best way of checking the stem seals? Head off valve springs off and pop the valve out slightly? How much play is exceptable?I can guarantee if your engine has done over 80k your exhaust valve guides will need replacing. Your best off doing valve guides and seals, headgasket and skim. Job done. Talking about 500 quid for a head overhaul and will fix around 75% of oil consumption / blue smoke issues. Club Chairman Link to post Share on other sites
Sump_slammer 23 Posted June 6, 2014 Report Share Posted June 6, 2014 I can guarantee if your engine has done over 80k your exhaust valve guides will need replacing. Your best off doing valve guides and seals, headgasket and skim. Job done. Talking about 500 quid for a head overhaul and will fix around 75% of oil consumption / blue smoke issues. Club ChairmanIve got the head off, all the guides are fubard the engines done 150,000 miles. Spoke to vince at stelth and he pointed me in the right direction of a good set of guides, problam is im in essex so im going to use my local engine builders. Went to my local engineering shop and they have confirmed just the guides need doing and they said that the guide im using are a very good spec. Cheers vince! Ill be down soon for my map when the chargers on. VR6Pete 1 Link to post Share on other sites
VR6Pete 1,455 Posted June 6, 2014 Report Share Posted June 6, 2014 Ive got the head off, all the guides are fubard the engines done 150,000 miles. Spoke to vince at stelth and he pointed me in the right direction of a good set of guides, problam is im in essex so im going to use my local engine builders. Went to my local engineering shop and they have confirmed just the guides need doing and they said that the guide im using are a very good spec. Cheers vince! Ill be down soon for my map when the chargers on.Vince is a top bloke. Stealth are building me a new head and block, had other engines built in the past and highly recommended. Club Chairman Link to post Share on other sites
Sump_slammer 23 Posted June 7, 2014 Report Share Posted June 7, 2014 New block aswell? Whats the plans for this one? Link to post Share on other sites
VR6Pete 1,455 Posted June 7, 2014 Report Share Posted June 7, 2014 Hah indeed. It originally went in for head but the block is pretty terminal after 120kGot cams and 3.68 FD already so just after a good stock engine so I have options to boost it later down the line, I'd love to have had wossner pistons again but just can't afford at the momentClub Chairman Link to post Share on other sites
Sump_slammer 23 Posted June 7, 2014 Report Share Posted June 7, 2014 Your getting me worried now lol, why was the block terminal after 120k? Link to post Share on other sites
Sump_slammer 23 Posted June 7, 2014 Report Share Posted June 7, 2014 Also whats 3.68 fd? Link to post Share on other sites
CALICO 130 Posted June 7, 2014 Report Share Posted June 7, 2014 3.6 final drive for the gearbox normally from a G60 corrado I believe makes acceleration quicker. Possibly lack of proper maintenance but the vr6 lump is known for uneven bore wear due to the narrow V MJ Vr6 1 Link to post Share on other sites
Sump_slammer 23 Posted June 7, 2014 Report Share Posted June 7, 2014 I dont want to be going down this route but whats involved with sorting uneven bore wear? Slight overbore and new piston rings? Or is it a case of overbore and new pistons? Whats the average price at a machine shop for this? Link to post Share on other sites
VR6Pete 1,455 Posted June 9, 2014 Report Share Posted June 9, 2014 You should do leak down test / compression test to determine if you have any internal issues. Engine rebuilds not cheap Club Chairman Link to post Share on other sites
Sump_slammer 23 Posted June 9, 2014 Report Share Posted June 9, 2014 Problem is the engines on the stand atm and the heads off. Looking at the bores they have a lip on them, but that sounds common on these high milage vr's but no score marks. Think I will just bang the chains on and head on and build a bottom end up at a later date. I have more fun things to think about like putting my cams in and saving for my supercharger Link to post Share on other sites
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