I am only a few years behind you - 52 years here!myother45isalesbaer wrote:I am a 54 year old fart that fell off a "pumkin" truck in the big city.
Ah, yes, the gold old days. No ECUs, no computers inside cars, no OBD-II connectors, all direct wiring, no CANBUS, etc., etc., etc. Fuel was carburetted into the engine, and the spark plugs were fired from the distributer, and there was space inside the engine compartment to reach in from above and do things - like change spark plugs and oil filters and the like.myother45isalesbaer wrote:Back on the farm we had to know how to fix the old tractor, hay bailer and anything else mechanical. A mechanic was 200 miles away and most likely full of moonshine so we couldn't wait for Andy and Barney to get him sobered up so we could get some parts. We either found the parts or made them. If we didn't get the parts the tractor and bailer didn't run. The hay didn't get in and the cows had a fit if they weren't feed and milked.
The electronics and controls on today's cars are mostly impossible to tweak. Yes, you have to have sophisticated software and testing skills. Some of the folks who like to work on the modern cars, hang out in our NICO "Engineering Talk" forum and the various engine forums (including the one on the VH and VK engines). There are not a lot of people or posts there, but lots of fun reading if you go back over the previous posts.myother45isalesbaer wrote:So I am old school and self-taught. I could not change a spark plug on a M today if I wanted to. Where are they? I wish I could hook-up with a techno guy who knows motors and knows how to tweat those chips. I just don't have the skill sets to deal with the electronics on these cars. Even if I did I could not afford the software to do the analysis.
Pretty much all the oil additives don't do anything to help, although some are mostly benign - so, if anyone wants to waste their money, they can. However, in some cases (like the infamous Lucas oil additive), they can actually be detrimental. Check out the oil frothing problem created by Lucas additive (do a search for it here, or google for the site ... called "bobistheoilguy.com or some such name) for one reason why careful research is better than believing the snake oil guys!myother45isalesbaer wrote:So the "old Fart" says poop to the gas and oil additives. Over the years all of them have been proven to be pretty much useless. A very few have standed the test of time. Where is STP or Marvel Mystery oil today?
This is still one of the recommended procedures on the current M engine. It is listed in the TSB's as one of the cures for apparent carbon buildup. The problem is that doing it after the car is demonstrating severe symptoms, is pretty much too late. Then, you end up needing the BG-44K or a proper pressured rail flush.myother45isalesbaer wrote:But one thing has held up since "benz" got the internal combustion engine to work. An ocassional full power several minute winding that tach to its limit will reduce or at least blow out some of the carbon. I like to start my fully warmed up engine in first, bang the pedal to the floor and then try to hit second. If I get to full juice in second or by chance third by then I am usually running out of road.
Absolutely!!myother45isalesbaer wrote:You cannot putt-putt these engines around all day. They were made to run and run hard. Forget the additives.
Yup! My aunt had a Dodge Dart ... 1962, I think ... that had this transmission selector. I remember being totally fascinated by it!lfj2025 wrote:My very first car was a Dodge with push button transmission!
Using gasoline that contains injector cleaner additives is a Good Thing™ to do.myother45isalesbaer wrote:Do you think adding some fuel injector cleaner would slow down the carbon deposit problem........or is it really a case where that is not much you can do about it? How about some octane boost to get the internal temps higher to burn some of that carbon off?
That is correct. The older VH engine simply did not have this carbon build-up issue. Much tighter ring tolerances, no oil blowby, and no oil to burn to create the carbon problem.myother45isalesbaer wrote:I have a friend with an older Q with about 200K on his motor and never had an issue.
Correct! The BG pressurized engine flush system is a proven solution for bad cases of buildup.jagvet wrote:There have been very respected studies supporting BG-44K, but no additive is going to be as effective in removing carbon deposits as a periodic chemical flush of the engine. BG is one of the major providers of these proprietary flushes through dealers and service stations, but I am sure there must be others.
Depends on the model year for the Q45. 1990 - 1996 Q45 was VH45. 1997 - 2000 Q45 was VH41, and 2001+ Q45's use VK45 ... same as our M45's!myother45isalesbaer wrote:Also under the impression that the Q and M engines were the same.
Well, if the ring fit is too loose, then compression goes down, yes. And, equally importantly, if the ring fit is too tight, you waste some of the power in more friction, etc.myother45isalesbaer wrote:One statement someone made is they loosed up the ring tolerances for more power. I would think it would have been the opposite. Tighter would increase compression with less blow-by. So I am confused on that one. Generally as an engine wears the ring tolerances get larger, compression goes down and oil consumption goes up. What's the magic in the M motor that works in reverse?
Yes, I remember reading that a long time back, but had forgotten!myother45isalesbaer wrote:What you have stated about ring tolerences is what I always thought to be true. The only time if have seen it work in reverse is when the different metals used expand and contract at different rates. Those in my days were generally full race motors that were built loose, but as temps came up they got tighter and started putting out the HP they were designed to.
Totally self-taught (I read a little bit), so I often get things wrong too! And, I really do not know much about cars ... just the few things I have read about. Unlike some people here, my limited "knowledge" comes from reading and not real hands-on experience. Wish I had the time for that.myother45isalesbaer wrote:Are you self-taught or factory trained? You seem to have a ton of mechanical knowledge.
Yup, they sure can be manipulated ... no offence taken at all! Check out this link http://www.nissanperformancema...sarah/ for what I consider the definitive word on how HP is calculated from dyno measurements of torque. Sarah explains why the magic number is "5252" (BTW, if I wasn't already married, I know who I would lust after! ).myother45isalesbaer wrote:Not to be rude, but I really question those HP numbers. HP is a number that can be played around with a lot using formulas.
Can be quite true. You have to look at lots of things to get a feel for what happens with any given car when you floor it! The torque rise, its shape with rpms, the weight of the car, the weight of the wheel/tire combination (it is not always best to get bigger tires and wheels) particularly the rotating inertia if the wheel has weight farther out from the center, etc., etc., etc., can have quite an effect on the car launches.myother45isalesbaer wrote:It has always seemed to me torque and at what revs it hits its max is more reliable to determine that kick in pants feel that nails you to the seat. My 300 HP Beemer motor had less HP than the M, but the torgue came on sooner in the RPM range. The M gets there at a higher RPM making it seem somewhat slower from a stop.
Yes! Chevron advertizes their ability to meet "Top Tier" rating with their gas - contains Techron.jagvet wrote:Has some slogan name like "Top Tier" or some such. Last I heard from Goss, only Chevron and another brand that escapes me had met this standard.
Definitely agreed! I also use ISOHEET occasionally ... by the way, in my previous posts on the topic, I also say to make sure you all get ISOHEET and not the regular HEET, since ISOHEET is isopropyl alcohol and HEET is not.jagvet wrote:The only thing that will keep the water component of ethanol from separating in your tank (regardless of weather) is an isopropyl-based gas treatment (one bottle per month). I can tell you from store shelf research that the usual STP etc gas treatments on most shelves are not isopropyl and are therefore useless against ethanol. It must say isopropyl on the label to do any good. One brand I found locally at an auto store is Iso-Heet, but I am sure there are others.
Goss is a Motorhead who shows up on the tv show "Motorweek". Very knowledgeable about cars.myother45isalesbaer wrote:I have no clue who Goss is or what he is talking about.
Yeah! The last time I was in DC a couple of years ago, we walked past it instead. Oh, well.myother45isalesbaer wrote:Anyway, I am very disappointed I can not drive down PA avenue today in front of the White House.