THanks Alan. It was successful for sure... I was just expecting more from the car. Dropping 2000ft you expect to go faster... not slower. :rant: The differance was Air Temp.... took the car for a test run today (at home) and holley @#$@%@ Man it runs harder but I'm also getting 2psi more than I was getting in Vegas do to the 35 degree temp increase down there. Jumping from 6 to 8 psi makes a HUGE differance. Anyway.... It was a great time, just more work than we wanted :laugh: Next time the car' at a track will probably be BG in May.
Rich, sounds like things are starting to come together on the car. No breakage this time, that has to be a good thing. Yeah, high air temp is a bad thing for power. Hot air means thin air. Jim Burek
Well.... Just a small update. I've continued to abuse the tires on the GS since Vegas...... I've yet to any kind of an incident... Everything seems very solid. On A side note to keep the boost at 6 to 7 psi, I've had to go up 2 pulley sizes (Larger) than the one I was running in Vegas. The pulley I was running in Vegas that was giving me 5.5 psi or so is now giving me 11 to 12 psi since the air temps have cooled off so much (man was that a ride) :3gears: I'll see about getting some in car as well as out of the car video this weekend. --Rich
Just a small update. I went out a few weeks ago to a local hang out where there's always some youger guys looking to run stuff. There was a 99 SS with a built and stroked 382 LS1 sporting a turbo that put down 551RWHP and 681ft with 13 PSI. His car weighs 3600 (with out the driver) verses mine 4000lbs. He stated he wanted to play a bit so we hit the freeway and went from a 50 kick. To my supprise, the GS hung right with him neither of us pulling on each other. untill his Head Gasket let go. I was running the small pulley getting 10psi. :Brow: , but I was still expecting him to pull on me due to the power numbers he put down and the weight of his car. To make a long story short, this prompted me to Dyno mine to see where it was. Since my boss was willing to make a "Work" feild trip out of it, I figured what the hey and we went. The numbers are VERY Disapointing to me. I hadn't touched the car since parking it from running the boosted maro, yet I was only getting 7psi on the dyno on top end (3 more would have made a noticeable differance). The car only put down 458RWHP and 509ft ( about 100 less than I would have guessed). Weird thing is once I got the car back home and off the trailer, POOF.... 10psi again :rant: Anyway, good news is it's still together with more and more abuse on it. Since it's intercooled now, and still getting alky injected, I could aslo add more timing back into it. I dyno'd it with only 27.5 total in it. Another 3 degrees of total would have perked things up as well. Anyway. I'm hit the dyno soon again for a small tune session playing with timing and AFR while it's there. Wish the numbers where higher, but they are not...... however, still pretty respectable for a PUMP GAS motor that still has home ported iron heads and a cam that's not helping things out as well........ Hope everyone is having a great Christmas!! --Rich
Hello Rich, with the car sitting as it is right now, I think your dyno #'s are right in line with your ET's. With a Moroso Speed Calc. set at 4000lbs/460HP = roughly 11.5 ET/115MPH. A 100 more HP would put a 4K lb car SOLIDLY in the 10's @ over 120 MPH! :bglasses: I agree with (Rick?) who suggested going with a "blower cam". Not saying that such a swap would gain 100hp, but it would be a VAST improvement for SURE! :eek2: :TU: MERRY CHRISTMAS!!!
Great Job Rich I just spent the last hour reading all 14 pages of your dealing with the problems when you add the Supercharger to your 455. My hats of to you for all your persistence in solving the problems. I know it must have been very frustrating at times but just think how much you have learned. This is how progress is maid. Jim at PAE is first class as you have probably already know. Good luck with this project and the summer is on its way RonJ
Yeah, your correct, however, my times were made in 90 + degree heat with only 5.5 lbs of boost. I didn't think the Dyno was wrong by any means, I was just disabpointed that my small pulley only gave me 7lbs of boost on top ON the Dyno...... Yet on the street it gives me 10lbs. I know if I had had 10psi on the dyno, those numbers would be at least 50 beter across the board (the 3 missing lbs was like a 37% boost cut). Not a very good suprise
Don't forget that peak HP/torque are not the only important numbers. You also want to look at the "flatness" of the curves. Just because two cars have the same peak HP doesn't mean they will pull the same ET- you also need to consider the RPM range, and the torque curve (obviously). While you were on the dyno, did you take extra steps to chill the intercooler? If not, then it probably was only acting as a restriction and not an intercooler (which could have actually increased your temperature and decreased your VE, giving you some low dyno numbers). Spray some water on it, or CO2, or even nitrous oxide... (an intercooler needs air moving across it to be effective). If you chill that intercooler some more, you might even be able to run extra detonation-free timing... -Bob Cunningham
Rich, I wonder if the larger pulley would give you back some of your HP? If you overspin the blower (and/or have insufficient intercooling) it will produce more TQ in the lower and midrange rpms, but will cause an oveheating condition that hurts upper rpm HP. The pulley change would reduce your TQ, but might even up the HP. Either way, I would guess you are putting out close to 600/600 at the flywheel. I am not aware of anyone else doing that with a mostly stock engine. Nice Work! - Cheryl
Naw... I'm not over spinning the blower by any means. The blower ATI first sent with the kit was a 325.... The smallest one I have now is a 400 (big differance in size). It was so cold outside (around 40 degree's) we didn't put a fan in frount of the intercooler. instead I just left the fans on to pull some air through the cooler (the front of the car was sticking outside the building)..... I suppose some of the power loss could have been do to lake of air flow through the cooler..... There is still no explaination at all for the lack of boost! Why 2 hours later did the car 10lbs under it's own power? Yet only 7 on the dyno when nothing had changed??? The car even sounds different when on the road with 10psi verses when it only had 7lbs on the dyno. The Cooler I have is a pretty nice Bar Plate cooler. I don't see it as being to much of a restriction at all.
Glad to see this is still going! I'll be happy if I manage to get 350RWHP out of my engine... maybe I should turbo/super the 350 and see how IT does.
Keeping the tread alive..... Working on getting the car ready for the GS NATS in BG (my grandma lives in BG so it's one reason the long 1700mile trip each way is worth while). Anyway, adding AC back and tying up some loose ends over the winter. Hope to see many of you all there. --Rich
Hi, great thread. i learned alot and has inspired me to look into a supercharger for my lincoln. i noticed that you had a hard time keeping a consistant boost number. my question is why didn't you use a bypass valve to limit the boost? was there a reason why ya didn't use one? just curious. Then also did you notice any additional load on the cooling system. did it run hotter. Thanks Jeramie :beer
The car has had a bypass on it since day one.... I believe your refering to a blowoff vavle that bleads presure once it's see's a set amount of boost? Anyway ATI told me not to use on of those saying the charger would see surge point that would be hard on the bearnings. The Boost delima was caused by the tune getting closer, and the chager making more boost due to being more effecant(SP). The Wide Band 02 eliminated this due to getting the tune spot on. This whole project was a huge learning curve for me. The cooling system was not effected at all. since your only making BOOST at WOT. The power it makes on pump gas (91 octaine) is pretty good considering the cam isn't helping it, and the steel heads are my very first porting experiance. At this point I'm very pleased with how the car drives in town, and the power it makes when you tell it too..... I will make more power some day once I have rods and a block that will support it. right now I think I'm sitting on the fence on all the stock stuff. --Rich
Jim, I wish I was still able to go. At this point it's not looking like I'm going to make it. I started a new job about 7 months ago (one reason I haven't been on here much, I'm way to busy at work now). The job is going to push some pretty big stuff out in May and being the manager of OPS, I don't feel it would be a good idea to miss the things that are happening the time of the GS Nats Anyway Vegas will be a sure thing as usual. Hopefully you can drag yourself up to that one. I still owe you a dinner and some :beer . The trans has been GREAT. I couldn't be more pleased with it. --Rich
Dyno pull What acceleration rate did they use on your dyno pull? If they ran it up thru the rpm's too fast it can reduce the load on the motor and cause a drop the boost at WOT. Just a thought. A dyno is mainly a "reference tool" and tuning aid. Although if not used right, they can be a waist of time.
Rich, Sorry to hear that you aren't going to make it to BG this year. I was hoping to finally get to me you after all this time. Hope you get the blower issues resolved and can finally just drive and enjoy the beast!
Hey Carl, Things have been worked out for a good long while now. Been on the road beating the hell out of it for the last 7 or 8 months with no issues. Everything seems very happy and content at this time. --Rich
