Guest steveskyhawk Posted September 6, 2009 Share Posted September 6, 2009 What is the ideal donor car for an SC engine swap? How about a 97 Riviera? Link to comment Share on other sites More sharing options...
padgett Posted September 6, 2009 Share Posted September 6, 2009 Ideal would be a 92-95 with OBD-1. Can make anything work with enough time and money. Link to comment Share on other sites More sharing options...
Don B. Posted September 6, 2009 Share Posted September 6, 2009 I used a '93 or '94 sc out of a Park Ave Ultra.Left the Reatta computer, changed the sensors to the '88.Ran 15.1 in the 1/4 mile engine unmodified {stock Reatta runs 17.1}. It also passes state inspection, check this posting,http://forums.aaca.org/f116/new-jersey-inspection-141856.html Link to comment Share on other sites More sharing options...
Guest steveskyhawk Posted September 6, 2009 Share Posted September 6, 2009 What transmission? Link to comment Share on other sites More sharing options...
Don B. Posted September 6, 2009 Share Posted September 6, 2009 I had the trans rebuilt with as many heavy duty parts as available. The flywheel had an extra bolt for the crank but it is not any larger. Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted September 8, 2009 Share Posted September 8, 2009 easiest is a 91-95 doner. The 94/95 has a bit more power and a bigger intake. The newer modles have even more power but require a bit more indepth install. Link to comment Share on other sites More sharing options...
Guest crtnrds Posted September 9, 2009 Share Posted September 9, 2009 My '88 had a '92 Riviera motor in it when I bought it. I promptly blew it up & replaced the motor with a 2002 Regal GS Series II motor. Used most of the sensors that were in the S I motor (some of which were probably from the original motor). Ryan G. reprogramed the chip for me. Wasn't too bad a swap. Link to comment Share on other sites More sharing options...
Guest Richard D Posted September 10, 2009 Share Posted September 10, 2009 My '88 had a '92 Riviera motor in it when I bought it. I promptly blew it up & replaced the motor with a 2002 Regal GS Series II motor. Used most of the sensors that were in the S I motor (some of which were probably from the original motor). Ryan G. reprogramed the chip for me. Wasn't too bad a swap.Why did it blow up? Run it out of oil? Throttle stick? On purpose? I always thought with proper care these engines are pretty much bullet proof.Richard Link to comment Share on other sites More sharing options...
Guest RynoDyno312 Posted September 10, 2009 Share Posted September 10, 2009 My '88 had a '92 Riviera motor in it when I bought it. I promptly blew it up & replaced the motor with a 2002 Regal GS Series II motor. Used most of the sensors that were in the S I motor (some of which were probably from the original motor). Ryan G. reprogramed the chip for me. Wasn't too bad a swap.Did you retain the touch-screen functionality? Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted September 10, 2009 Share Posted September 10, 2009 Yes you do as long as you use the original OBD1 sensors. Link to comment Share on other sites More sharing options...
padgett Posted September 10, 2009 Share Posted September 10, 2009 Biggest change is the EGR, "C" engine was digital and "L" is analog (when it has one) Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted September 10, 2009 Share Posted September 10, 2009 Yes you must either build a adapter or not have one. My car passed WA state emissions for the 89' without one. Link to comment Share on other sites More sharing options...
Guest crtnrds Posted September 10, 2009 Share Posted September 10, 2009 The S I motor had a rod knock when I bought it. I bought it as a package deal with another stock Reatta which I sold for substancially more than I paid for both of them, so the SC car was essentially a freebe. Yes, I did retain the touch screen. That's the best part. Link to comment Share on other sites More sharing options...
jonlabree Posted September 10, 2009 Share Posted September 10, 2009 I would really like to see that car.........:confused: Link to comment Share on other sites More sharing options...
Guest RynoDyno312 Posted September 10, 2009 Share Posted September 10, 2009 Yes you do as long as you use the original OBD1 sensors.So you could use a series 2 engine, and as long as all your sensors are OBD1 the CRT still functions? For example, if I got a hold of a series 2 long block, swapped all the sensors from my LN3 onto it, got the ecu flashed, and dropped it in, it would be good to go? This would be running at stock boost.I thought the series 2 swap would be much more complicating seeing how different it is from a series 1.Forgive me if this is repetitive. I'm not new to cars or modifying them, but the Reatta is much differnt than the more modern cars i am used to. It's much cimpler, mechanically, but the electronics are a bit intimidating.Edit: is there a way to block-off the EGR without setting off a CEL and still pass smog? Link to comment Share on other sites More sharing options...
padgett Posted September 11, 2009 Share Posted September 11, 2009 1992 TranSport 3800 has no EGR. The PROM can be modified to just ignore it. The Reatta is more modern than the cars I am used to. Link to comment Share on other sites More sharing options...
Guest crtnrds Posted September 12, 2009 Share Posted September 12, 2009 Yes, I kept the touchscreen, as Daniel mentioned, with OBD1 sensors. The SI motor had a rod Knock when I bought it as a package deal with another Reatta. I just ran it (hard) til it blew about 1/2 mile from my house. And, yes, it ran out of oil by the time I got home. Link to comment Share on other sites More sharing options...
jonlabree Posted September 12, 2009 Share Posted September 12, 2009 Can you give us the details on how you kept the touch screen? Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted September 13, 2009 Share Posted September 13, 2009 Jon, All you have to do is use the OBD1 and have your prom reflash to operate the engine. If you would like, I would even do the swap for $500 pluss cost. Link to comment Share on other sites More sharing options...
Guest Greg Ross Posted September 13, 2009 Share Posted September 13, 2009 Like Daniel says, and as long as you don't disrupt the data link between the ECM/ BCM and use OBD 1 Sensors everything works including the Scan Tool. My ECM PROM was altered to turn off the EGR input, (I don't have an EGR) and where I have the 5-Spd. all the tranny inputs are turned off. When I removed the Transmission shift position shitch I just hard wired it up so that it thinks it's in 4th gear all the time. The park/ neutral saftey is also wired/ powered as I recall. I could have set up an interloc switch on the clutch pedal to enable that feature but never have.Otherwise, everything in the Scan features works as it should. Link to comment Share on other sites More sharing options...
Guest xerxes Posted September 14, 2009 Share Posted September 14, 2009 Is it harder to put in a 3.8 Turbo from a Grand National than the Supercharged engine? It seems the 3.8 Turbo is a well proven package that would offer great performance. If it's harder then can someone please explain the differences?Thanks in advance! Link to comment Share on other sites More sharing options...
padgett Posted September 14, 2009 Share Posted September 14, 2009 Major difference is that the MAF sensor for a "C" 3800 (88-90) maxes at 170 g/sec and the boosted engine goes considerably higher. Also the advance maps are different.Greg has more real experience but AFAIR you can use the advance maps from a 92-94 SC engine. BTW you can program for more advance and it will feel like is has more power - for a brief period. Link to comment Share on other sites More sharing options...
sfair Posted September 14, 2009 Share Posted September 14, 2009 Is it harder to put in a 3.8 Turbo from a Grand National than the Supercharged engine? It seems the 3.8 Turbo is a well proven package that would offer great performance. If it's harder then can someone please explain the differences?Thanks in advance!Rear wheel drive Buick V6's have a different bellhousing bolt pattern making it a deal breaker right there. Link to comment Share on other sites More sharing options...
Guest RynoDyno312 Posted September 14, 2009 Share Posted September 14, 2009 Rear wheel drive Buick V6's have a different bellhousing bolt pattern making it a deal breaker right there.Wouln't you just need an adapter plate to fix that? Link to comment Share on other sites More sharing options...
jonlabree Posted September 14, 2009 Share Posted September 14, 2009 That might work. BUT what front wheel drive transmission would stand up to 450 500 hp? Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted September 15, 2009 Share Posted September 15, 2009 The SC engine internals would likely hold up to the 450hp. Now if you use a 5 speed tranny, I have been told by a couple places that they could build a getrag that would hold up to 50ohp. Not sure if there is any truth in it, but they were well know shops. Link to comment Share on other sites More sharing options...
sfair Posted September 15, 2009 Share Posted September 15, 2009 Wouln't you just need an adapter plate to fix that?Starter on wrong side, intake manifold is reversed, etc.It's a project that would take more money and time than I have to spare.Just get a GNX and then at least the wheels spin at the correct end of the car! Link to comment Share on other sites More sharing options...
handmedownreatta Posted September 15, 2009 Share Posted September 15, 2009 rebuild the reatta v6 using grand national parts.... Link to comment Share on other sites More sharing options...
D-a-n-i-e-l Posted September 16, 2009 Share Posted September 16, 2009 Not the sam architecture. Link to comment Share on other sites More sharing options...
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