Ahhh. You see, I have an 1980 Volvo 260 GLE. The problems I had were with it (Not the DeLorean). After the timing chain broke, I replaced all that stuff, with the addition of the NEW cams and tensioners. I'm sorry to have misled you. I didn't know that the DeLorean already had the modified oil passages and cams. Nathan On Tue, 11 Jan 2005 00:19:20 -0500, DMC Joe <dmcjoe@xxxxxxx> wrote: > > > Nathan, > > I respectfully disagree. > > In my 30 years of DeLorean consulting and servicing this is the one subject > I've had to repeat over and over. > Once again, here are the facts. > > The valve train oiling problems and early camshaft failure are related to > the pre 1981 version of the PRV-6. The majority of these engines were in > Volvo 260 GLE's. It was not uncommon for these pre 81 Volvo's to start > chattering at around 40-50k miles with complete valve/cam failure at around > 80-90k miles. As these failures mounted the engineers at the engine > manufacturing plant initiated a modification that enlarged the oil passages > and specified a harder camshaft. This modification completely eliminated the > earlier problems. This is one of the reasons why the DeLorean gained a > negative opinion among mechanics when the DeLorean was first introduced. > > Your experience with cam chain problems is extremely rare. As a matter of > fact it is the first time I have ever heard of this problem in a DeLorean > engine. > > DMC Joe > > -----Original Message----- > From: Nathan Robinson [mailto:nathanrobinson@xxxxxxxxx] > Sent: Monday, January 10, 2005 1:35 PM > To: dmcnews@xxxxxxxxxxxxxxx > Subject: Re: [DML] Re: Piston rings + sleeves > > The PRV-6 engine had problems with oil delivery, and consequently, the cam > chains wore like a mofo. Also, the cam chain tensioners are hard to check, > making the engine (you guessed it) develop problems 'later on' in life. The > blowing up bit I can only imagine is what happened to me. > > The cam chains wore considerably and broke prematurely. A borked chain > thrashing around at the front of the engine cover is quite a chore to fix. > And expensive. The 'new' cam tensioners and my dad's modification to the > front of the timing cover (and also scoring depth marks on the tensioners as > well - so we can tell how worn the chains are) makes checking up on those > little beasts a whole lot easier. > > When those chains break, it's generally cheaper to just find another engine. > > Nathan Robinson > > Note: On different odds and ends, an interesting tid-bit is that the Ford > Triton V8 and V10 are also very similar engines to our squirrelly little > PRV-6, which was initially slated by P,R,V to be a V8, but gas shortages at > that time changed their mind. While the Triton engines have more > displacement and more cylinders and more electronics, however the guts (as > far as I can tell from visiting junkyards) look to be the same. > > Also, (I don't know if this has been mentioned before) another good thing to > do if you're having problems keeping antifreeze in the system, is install > spring clamps (instead of those screw clamps) on the engine coolant tubes > right under the intake manifold. (there are two IIRC) If (when you take your > engine apart) there is antifreeze on the top of your engine block, (and it > happens to make a mess when it gets there) run to the junkyard and grab some > spring clamps off a triton engine (which just so happens to have most > everything in the same spot, and the same size, and happens to be a far more > common > engine) and it will fix the leaking antifreeze. > > Also, (Boy.. i'm on a roll here) another place to get engine parts, etc... > is www.ipdusa.com and www.swedishparts.net. IPD is a tad expensive, but good > stuff, and www.swedishparts.net had dirt cheap (OEM and others) prices (and > photos) of whatever you're looking for. > Just remember the same engine (based on the research I've done on the > engine) is on a '80 - '82 Volvo 260 series car. (Different 250's I'm sure > are similar as well, but the engine production years are the same for that > particular 260 car. ('80-'85) > > To address comments privately to the moderating team, please address: > moderators@xxxxxxxxxxx > > For more info on the list, tech articles, cars for sale see www.dmcnews.com > > To search the archives or view files, log in at > http://groups.yahoo.com/group/dmcnews > Yahoo! Groups Links > > To address comments privately to the moderating team, please address: > moderators@xxxxxxxxxxx > > For more info on the list, tech articles, cars for sale see www.dmcnews.com > > To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews > Yahoo! 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