>Have just had a bit of a fiddle with the head and have found that the >exhaust valves on 4 and 5 ARE sticking open. OK fine. What do I do about >that? If I have to take it to someone to get it fixed then I may aswell >get them to shave the head while they're at it.
Valves are probably bent, replacement is the only option. Two issues to be considered when shaving an L-series head: CR and camchain/valve train geometry. Stock thickness of an L6 head is 108mm (some might say 107.9 :-) ), so that's really your starting point - determine whether the head has already been machined at all and go from there. >Oh and as a matter of interest I did a leakage test on the head too. As >in rotated the cam til both valves were closed on number x, then flipped >the head and filled the combustion chamber with turps. Let it sit for a >while and saw if the level of the turps went down. If it did then had a >squiz in the intake/exhaust 'tubes' for signs of wetness. Found that >there is small amounts of leakage from all comb.cham's. As in it would >take approximately 5 mins to drain all the turps out give or take a >minute. Most common is leakage through both intake and exhaust valves. >At a guess i'm thinking that this is acceptable given that the combustion >will also force the valve closed even more and that it would've taken 5 >mins to drain out?.. or is it unacceptable? Personally in these sort of circumstances I would take the head completely apart and have the thing checked out throroughly - all the valves checked for straightness, refaced, tank the head (clean), inspect for corrosion damage, cracking, etc, etc If the $$$ are tight then I would at least have the valves checked. >So yeah.. part of the problem found.. where to from here? >Regards, > >Dave > >>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<< > >On 4/4/02, 2:47:01 AM, "Terry Rudd" <[EMAIL PROTECTED]> wrote >regarding RE: L24 troubles. Please help: > > >> No worries Richard, > >> We all make them and they are embarrassing at times. >> I see the dramas with the engine in question still isn't resolved though. >We >> are missing something that's hard to pick here, can't put my finger on it >> though, I guess it would be tad easier if I was 500 miles closer to it.. > >> regards >> Terry > > > >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED]]On Behalf Of Richard Clough >> Sent: Tuesday, 2 April 2002 8:29 PM >> To: [EMAIL PROTECTED] >> Subject: Re: L24 troubles. Please help > > >> Terry >> I stand corrected. I must have had brain fade. I was thinking of Mazda >> SNA engine not the proverbial Datsun SOHC Lseries. >> ----- Original Message ----- >> From: "Terry Rudd" <[EMAIL PROTECTED]> >> To: <[EMAIL PROTECTED]> >> Sent: Monday, 1 April 2002 21:13 PM >> Subject: RE: L24 troubles. Please help > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
