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Found 5 results

  1. HI ALL NEW TO THE FORUM I am about to start on a rebuild of my Seville STS. The items to be done or redone are as follows. I have an extreme stress job all mental so build the next two cars is my physical release of stress. To start with I have a blown gasket and a collapsed lifter. My spouse continued to drive the car and cracked the transmission cooler in the radiator flooding the engine with trans fluid and the trans with coolant. So pretty much toast. I have previously upgraded the brakes with Stage III Power Stop rotors and pads works nice but after sitting they require resurfacing. I will be making a polisher to do this as in my home state service providers are afraid of recutting rotors especially when they are drilled. Back in the 1980s I worked for GM as a DCS tech and forensic specialist out of Corvette Action Center and PRO. We had severe issues in Florida with the early Lumina brake systems warping rotors and chattering I designed a KentMoore tool similar to the Jaguar inboard brake resurfacer it uses #m polishing pads rather than cutting bits to resurface the rotors on the car. Pretty simple device bolts to the brake caliper mounting flange and uses air motor right angle grinders with spirolock pads. I have a couple of body issues one is the drivers side back door welt is rusting through under the welt so I will document how to do a simple resign repair, not bondo but epoxy. The roof channels have leaked on the electric top since I bought the car new. I am removing the electric roof completely and replacing with a simple after market sun roof with lift out panel. I will be trimming the interior to fit with factory styling. Because of the roof leak I have several issues in the interior one is a pretty bad case of mildew. Having restored flood damaged cars in the past I intend to use a Ozone generator to bleach the whole interior for several days. The factory material will be placed with flocked marine canvas and composite leather cloth. I found a great manual shoe stitching machine on Amazon that does a great job at sewing leather. I converted a L91 Caprice police car to a G body Fleetwood interior a few years ago was my main driver for 8 years. The interior stuff is always fun because GM tried to provide common tooling for many of it's vehicles and most mountings are common across many car lines. Not really happy with the Dash on this model I will be building a custom gauge cluster and navigation center using standard desktop PC components and linux open source software. The seats are functional but need leather replacement and due to my illness my back has a tendency to tweek on hard turns so I will be setting a pair of racing buckets into the build. If people need seat parts I will have two working units available. Since the roof leak was mainly in the drivers side A pillar the electrical seems to have been damaged so not bothering to repair it I will be replacing the whole thing with a new custom harness. The suspension was upgrade a few years ago with all new urethane bushings and aftermarket shock absorbers with level ride maintained I will document that process for the build as I will be removing the factory magnaride completely and replacing with a simple arduino based controller. This model of seville squatted nicely when over 90MPH and the ride stiffened greatly the after market struts have air ride built in and are actually stiffer so I have in mind a air valve control that will squat the car and keep it stiff all the time. The engine carriage mounts have already been up graded to urethane and HDPE I will document the process of making the mounts it is actually pretty simple. I paid someone to replace the transmission when I became ill thinking that I would bounce back quicker than I have so I will be building the jack and stand system to drop the carrier without the over head lift. Once the front body work is removed from these chassis they easy to work on. Many struggle needlessly to avoid dropping the carrier. A couple of weld up scissor stands and a porta power will get the car 36 inches off the ground lifted from the body welts on the sides. The carrier comes out as you lift the body with a weld up dolly it takes about 2 hours to pull the whole assembly. The transmission is a simple bent version of a 4L80E same parts mostly with a heavy chain. The differential will be upgraded to a mini locker like the ones used in the 7 5/8 rear of any GM they cost about $250 it makes some noise when making sharp turns but for HotRod use it stops the crazy unpredictable torque steer when accelerating hard. The week point on these transmissions is the 3-4 apply band and housing the after market has case repair kits for the GMC K series trucks that work in this trans. Another company TCI makes an upgrade kit for sprags and drums clutches and all for the 4L80E that works in this trans. I have not seen a decent High Capacity oil pan for this so I may need to weld one up. The front pump is essentially the same as a 4L80E so I will pick up a stahl convertor once I figure my torque peek. My engine has suffered the dreaded over heat than code 300 sporadic miss for years WOT usually cleared it out but after the last run it has an audible noise that matches the miss. Compression is good so I think it is probably a collapsed hydraulic cam adjuster. If it is a core shift in the head I will be documenting how to weld the bore and rebore a new. I am also planning on putting a turbo on this build or maybe a M122 eaton I have to get and accurate pattern for the difference between the XLR heads and the STS heads if there is a difference maybe someone hear knows. I will look at machining the adapters if practical if not turbo it will be. I plan to redesign the exhaust manifolds for this car either way the rear one is basically a modified log manifold. So if I go turbo it will be a mandrel bent log style manifold with a scavenging front pie wedge triY setup. The block will be either timesert or I saw a guy who makes larger studs for these engines I will inspect once apart and determine what course to take. As I am going to boost the engine I plan to add piston bottom oil cooling to help prevent lean burn through. Used it on many of my previous builds using diesel engine main bearing squirter inserts it works nicely. As I am boosting and planning on running at Higher RPM I will be looking at methods to stabilize the lower block main caps I can machine steel 4-6 bolt caps or simply girdle the whole bottom of the block I have to look at the webbing in the casting to determine whats needed. The pistons are pretty good in these motors is the originals still look good I will lighten them up and plate the tops with nickel the skirts will be coated with Tungsten Disulfide as I have about 4 Kilos of the stuff in my one blasting cabinet. I may select some after market rods once I get some accurate dimensions for them PCE in Australia has a bunch of nice H-beam rods that I have modified for strange builds in the past. As for the electronics I will be using my own fuel management system I have a couple of threads on other forums covering the fuel systems I have built. My Goal is to produce about 750 crankshaft HP dropping the car down into the 12 second realm. With a mild street presence. To do so either the M122 or turbo intake manifold will change so I may lower the engine in the cradle or put a cowl on the hood. It will be a fun build I will keep lots of photos and probably some how to videos. I figure about twenty or so commercial products will come out of this build so it will get rid of my aggression and please the wife on Total cost involved. This is my 50th year of Heavy automotive engineering and actually still love building hotrods. Also this is my 17th Cadillac Hotrod starting out with a 472 powered 1972 Chevy Impala with a complete funeral car Caribou interior and trim transplant. Tubbed rear wheels before they became cool. My favorites are the 9 Cadillac Cameros for racing. The guys called the Cadillac motors boat anchors but they started out over 300Hp and with shipyard blowers hit 700-900 easily. Look forward to having some fun.
  2. 2010 Escalade Ext Magneride . Rear shocks and compressor needed replace . Replaced Magneride rear with two Skyjacker H7017 Softride Hydro shocks and two Firestone spring assist airbags inside the rear springs . Since then the truck loses engine power at 75 mph. The engine is still running but at reduced rpm with no response to gas pedal . The only code that came up was for oil pressure sensor high voltage . 'Service suspension system' has been showing long before switch from magneride to hydro rear shocks . The wires that went to the factory stock magneride shocks are now attached to nothing . My question is what should I do with these wire? And, does anyone know if this could be the cause of the loss of power at 80mph ? Thank-you for any suggestions. Additional Notes: For the last 5 years I commute 5 days a week an hour each way on a major highway . I get to the fast lane , set cruise at 129kmh (80mph) , rarely have to tap the brake and resume, never been pulled over, the truck makes for a comfortable commute . I make this point because I can get the truck to 129kmh (80mph) but within about 5 seconds the engine power is reduced and does not respond to the gas pedal manually or the cruise control. On cruise control at 80mph the truck with slow down to 70mph then the transmission shifted down and the engine rpm's went from under 2000 to 3500 as the cruise control must have been putting demands on the truck trying to get back to its 80mph set cruise speed but it couldn't and the engine rpm jumped from 3500 then to 2300 and the transmission was clunking as it went from gear to gear trying to figure out what it was supposed to do .
  3. ...here's on for Texas Jim. ...just had the rear shocks and the front struts replaced on my '98 Deville. Was still hearing some clunking over potholes and rough spots, so I went back to the front end shop. Turns out the tie rod ends were loose. Okay...took care of that. No big deal. ...but the system is throwing a SVC SYSPENSION SYSTM at me...and doggoned if I know what to look at next. ...it also lights the Anti-lock Braking and Steering icons on the dash display. ...got me puzzled...but I'd sure like to correct whatever it is. ...thanks. Still enjoy driving this fine old machine...less than 200,00o on it, has everything I could ask for in a fine automobile and still looks good.
  4. Hello Caddy Enthusiats!!!! I would like to keep things short and simple. My question today is what part(s) should be replaced based on the DTC codes that are pulled from my car? I have a 95 DeVille Concours. The codes are as follows: P035 P036 P039 P040 S010 S011 S012 S015 S016 S017 S021 S022 S025 S027 S030 S031 S035 S037 S044 S051 S060 S061 Any input would be greatly appreciated and I would like to thank everybody in advance for their suggestions. Thanx!!!
  5. There's an inch-and-a-half-thick Owners' Manual that came with my 98 DeVille d'Elegance...and here are three words that DO NOT APPEAR anywhere in that book: suspension, shocks, struts. It doesn't even tell me whether I have electronic shocks or not. I know the ride isn't what it ought to be -- probably still running OE stuff, since this car was bought from a prior owner -- but I need to know what I'm dealing with. So please tell me what suspension this car has. Thanks very much.
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