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Everything posted by padgett

  1. OY. Oil pressure switch failure is so common I always keep a spare. "top for about a minute, at the most, and then shut off like I had turned the ignition switch off" sounds like when it tried to switch to closed loop. What you need is diagnostics. For in depth I use a Moates adapter, TunerPro RT, and a laptop.
  2. padgett

    Ray Evernham's new TV Show

    Channel 220 on Direct.
  3. padgett

    Calculating compression ratio...

    " Factory Horsepower ratings" are simple: pure advertising in the US. Good dyno is the only way to know. Don't forget for HP we has SAE gross, DIN, SAE net, and wherever the Toledo needle swung to when they dropped the clutch. "Plastic sheet and burette" tells you what the chamber volume is but says nothing about the piston dome shape. Have seen every thing from pop-ups to bowl and everything in the muddle. Finally actual compression ratio says nothing about the head design and chamber shape - center spark can take more advance than an L-head. Straight plug SBCs are when indexing came from which led to the slant plug heads. It is not simple and more an art form than scientific even 100 years on. The method is to come up with a scientific design and then test/modify/test/modify and on many times. Today for street use I prefer a 3.25-3.50" stroke, 3.75-4.0" bore, with a DOHC pent roof 4-valve center spark head. Vary the number of cyl to hit the displacement target. I personally like a 3-4 liter V6 ( which gets me back to my '59 3.4 Jag was 250 hp then, is 300 hp now.)
  4. Should be a rest from finicky Furries, Jags, and Mercs but needs SAE not metric or whitworth tools. Also requires test equipment that is not OBD or ALDL. Normal 289 4 bbl (not 271) is a simple engine but so many hands have been in the pot that it is best to start with compression, cyl leakdown, cam timing, tailpipe sniffer, and ignition timing. Does sound to me like a combination of vacuum leak and lean surge but would want to start from ground zero myself.
  5. padgett

    Calculating compression ratio...

    " you must subtract the amount the piston moves upward " errr no. Might be true if the intake charge was massless but it has inertia (velocity times mass as long as you don't go sonic). In a "High Speed Internal Combustion Engine" this translates in a continuedl cyl filling even though the piston has passed BDC. Further most modern cams are measured not at full closed but at .050" lift. Can spend all day on the math but using a flow bench is much faster. It is an art form (one carb was even designed to run at the edge of choked flow. Also need to understand laminar vs turbulent flow And then there are stacked head gaskets and milled heads... And it all changes with direct injection, boost, and variable valve timing. Just static compression ratio is only the start. See Boss Kettering and Tom Midgley.
  6. I take it that magnetic turn signals are Right Out, would just need 6v bulbs. I have a couple.
  7. BTW Carter/Eidelbrock aftermarket carbs are set waaay rich. For a stock 289 a 450-500 cfm would be about right. What you describe sounds more like a lean stumble than rich. Tom has it right, would just add a tailpipe sniffer, but suspect few others have an O'scope any more. Chassis dyno would help also. Believe the original carb was an Autolite/Holly. ps have several Pertonixs - they are excellent devices that replace the points so the vacuum advance is still functional. On a premium gas V8 I like about 10-12 initial and 38 at 3000 rpm mechanical. 10-16 vacuum is good. Normally a Pertronix system includes a high power coil that is not suitable for a points ignition. pps an engine does not care how old it is, proper maintenance is everything. My Judge is tuned a bit hotter than stock.
  8. padgett

    Need help on 1949 Cadillac purchase #2

    Mostly by people who cold not afford one. What I remember most was the bit clear tubes in the rear window for the AC.
  9. And then suspect there is a third group that just likes certain cars. Have always preferred sporty two seaters for daily drivers (race cars were different) that have AC (Florida). Tend to fixate on certain drivetrains like the 3800/4T60 (two Reattas are ones I kept but also had others including a 90 Bonneville and a 92 Transport). Do have a spare engine/transmission sitting in the garage. Maybe two... Grew up with a Jag infestation & used to have a FIAT 124 Spyder I liked A Lot. Now have a SLK320 that is a modern equivalent. Today all my cars have Bluetooth & 3800s have Delco ignitions so not a stickler for originality. Judge would today be a restomod but dunno what it is called when the mods were back in the period (15x8 '78 Firebird wheels, Delrin bushings, & Olds W30 sway bars. Reattas have 16x7 Bonnie wheels). So not attracted to "old" vs "new" so much as "buy cars I am interested in and just keep the ones I like". Bought my coupe in '01 & still in the garage. Could take to LA tomorrow.
  10. padgett

    Code 41 Engine Control - Throttle Body Senssor

    I can see an occasional resistive circuit affecting everything on that circuit and the computer just showing the one that is out of range. Guess not many have recording scanners for the ALDL though they are available for a PC from & OTC 2000s still show up on CL.
  11. Doubt it, personally think the touchscreen in my 88 makes it a landmark car. Problem is there are still enough class 4/5 cars particularly on Craigslist to keep prices down. Is the old supply/demand curve.
  12. padgett

    Need help on 1949 Cadillac purchase

    I have two DA Polishers. The key is that the mop does not spin in action (may spin if free), instead it shakes. I generally use with a terrycloth towel but am not good at "pretty".
  13. Think it took me an hour or two the last time, is not hard (but then I do not have to deal with rust).
  14. padgett

    AAA Confession

    I just keep adding garage doors.
  15. padgett

    Auction that pipe dreams are made of

    T'bird with manual trans looks interesting...
  16. padgett

    Think whitewalls weren't used before the war?

    I thought tires were originally all white and the black (tire black) had to be added to hide dirt.
  17. padgett

    Looking at a 91 questions

    BTW, 90 has the same cup holder. 91 did have a more modern engine (L), transmission (4T60E), and ABS but much the same as a 90 otherwise.
  18. padgett

    Are the hobby members getting that old?

    " I have an old engine that I would like to remove the head from just to take a peek into the cylinders to see if I might want to clean the cylinders up before trying to start the engine. So I decided to order a new head gasket first. The head gasket cost $70." I have a $15 borescope with leds I can insert into a spark plug hole and do the same thing. Besides for head gaskets Rock Auto is your friend. Biggest difference is that when a younker I sent my order (with check or money order) off to JC Whitney (Washawski to westerners) it was a few weeks before anything happened. Many things I get from Amazon tomorrow. Methods change but not the task. C'est la meme chose.
  19. padgett

    Looking at a 91 questions

    If you have the VIN, check here. May have some information.
  20. padgett

    Drive train hiccup...does AT need work?

    Looks like a JCW fire injector.
  21. If the DOWN is working you should feel a tug/tap/grunt even if all the way down. If you do the problem is the switch (same wires, just reversed). If you feel a tap on the UP position, then the window may be jammed. If nada the problem may be the motor.
  22. padgett

    Who did ‘57 Better? Ford or Chevy?

    "nowhere near that many left" part of the reason I have always liked the more upscale cars, much higher percentage remain and most B-bodies in the 60s were available with a 4-speed. That said having grown up in a strange land the only cars of the 50s I had were an MGA and XK Jags. Of course I learned to drive in a 41 Ford Torpedoback (in the Bahamas) but never owned one. '63 was the year GM went to alternators and always liked that year particularly the GPs with the unshrouded headlights. 67 and 70 were also "vintage years" IMNSHO. errr perhaps "lakes pipes" ?
  23. Sorry ? An LN3 (C) just has one set of intake manifold gaskets. That part is no big and about $10 for the gasket set but if you need head gaskets or exhaust manifold gaskets also then it is a much more involved job.
  24. padgett

    1990 Reatta Won't Crank

    On my 90, the dash blanks when I turn the key to START. The ignition switch is down at the base of the column, not where the key goes. If you are not getting an error and the dash does not blankk then I suspect the switch is not moving all the way to START
  25. Best looking: Valliant - minus 1 for Lancer with plain trunk lid. Was the 4bbl carb available in '60 ? Most fun to drive: Corvair with camber compensator (like the LMs better myself)