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1840 Number: 1839 From: n20capri Date: Wed Dec 18, 2002 7:19 pm Subject: Re: Anyone ever dyno their cars?
Body:
Nick, Well it seems like everything so far is cool. The 155 pump is good for now with 6psi. The wires are good too. I think once you get the A/F ratio and timing checked you'll be on track HP wise. Like I said before, I'd get a good ignition and a bigger capacity fuel pump for the future though. ALSO, I'd use spark plugs that are one heat range colder than stock and gap them at .035 instead of .050 so there is no chance the flame gets blown out...that along with the ignition you'll be in great shape. Again, hope this helps and good luck!
Talk to you later, Mike
--- In ascmclaren@yahoogroups.com, tasmaniac1 <no_reply@y...> wrote: > Hi Mike, > > I printed out what you wrote to double check somethings. Here is > some more input. The fuel pump I am using is a 155lph which was > recommended for the 6psi. I will definately go up to either the 190 > or 255lph when I have the trunk pan replaced and also put on a 9lb > pulley too. I also put in a new fuel pressure regulator, 9mm wires > and new plugs. Timing should be checked as well as the air to fuel > ratio you mentioned. The rewiring job is really getting to me. After > Christmas when the shop is open again I will talk to him about > changing it. Thanks for all your help and will keep you posted. > > -Nick > > > > I wouldn't worry too much. It did pick up 52 horsepower. It only > > sounds off about 20HP, and I think that is very very easily gained > by > > some tuning. When they dynoed it, did they check your air fuel > > ratio? For a blower car you should see 12:1 to 12.5:1 and for > > naturally aspirated you should see 12.8:1 to 13.2:1. These are > safe > > numbers. Maybe your A/F is off. I noticed your using 24# > injectors > > but what fuel pump are you running? (I'd think at least a 190lph > > unit if not a 255lph) Also, maybe the re-wiring job is causing > some > > problems. I don't know I'm just throwing out ideas. A friend of > > mine just did heads and cam on his blower car and it was running > like > > crap. The first problem was he had the rocker arms adjusted way > too > > tight. The second problem was he had the wrong spark plugs in the > > car. They were to short, once he put the right ones in the car > ran > > fine. (He had AFR heads so if you make the swap make sure to get > the > > right plugs...lol) Also, what ignition are you running. A stock > > ignition might not be able to handle the extra fuel and spark. > I'd > > definitely invest in a Crane or MSD unit with a timing retard > > feature. Check the timing too. I'd think 10-13 degrees is where > you > > should be...again tuning will help you achieve the best advance. > If > > I think of anything else I'll post it. Hope this helps and good > > luck...keep me posted. > > > > Mike