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dyno + compression test

 
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Old 01-11-2008, 11:21 PM
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dyno + compression test

well went to the performancemotorsports in pearl MS and did a dyno and compression test. my dyno turns to come out at 136.3 hp at 6450rpm which was unexpected cuze, i thought at least 150hp i knew i would never be 190 like it says or known for but damn 136. but hey its an automatic lude.
well they also did a compression test on my automatic base lude cuze i was planing on 55 to 75 wet shot and it came out to be

180
177
177
170

is this normal or not to runing a 55 to 75 shot? what is the normal compressions on a stock car like mine with i/h/e? and what does it should be when runing nos? and what is the a/f ratio should be?
thanks.
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Old 01-12-2008, 12:04 PM
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anyone???
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Old 01-12-2008, 12:53 PM
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136whp is pretty normal for an auto trans H22.

Remember that even a strong running 5 speed base car will only barely break into the 160's to the wheels, and SH's (with their power-robbing ATTS system) are normally 5-8whp lower yet (mid to low 150's).

And since Honda automatics can easily lose 25-30% of their rated power, suddenly the 136whp you got makes a whole lot more sense (that's about a 28% loss from crank to wheels)................




As for compression numbers, I'd have to go home and consult my service manual to be dead sure, but they are all pretty close to each other, and IIRC well within spec.

I wouldn't be too worried about any of that. Just be aware that neither H22's OR Honda atuos like N2O all that much............
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And oddly enough, the older they are, the faster they are.........when they aren't broke that is
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Old 01-12-2008, 12:56 PM
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I just noticed that you appear to have an I/H/E combo.........if so, your car *might* be a touch down on power, but not by much.

Intakes might make 4whp on our cars, but until you start getting pretty wild on mods, even a header and exhaust COMBO is going to be lucky to make 3-5whp combined.....

Either way, you are still within the range or "normal" for an auto car.

How long has it been since your last tune-up?? A set of plugs/wires and a cap/rotor along with cleaning the airfilter on your intake might make a few hp back.
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My fleet of cars:

1999 Dodge Neon R/T 2.0L DOHC 5 speed (modded)
1997 Honda Prelude SH 2.2L DOHC VTEC 5 speed (stock)
1992 Nissan NX2000 2.0L DOHC 5 speed (modded)
1991 Pontiac Grand Prix SE 3.4L DOHC 5 speed (stock)

And oddly enough, the older they are, the faster they are.........when they aren't broke that is
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Old 01-12-2008, 07:47 PM
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i havent did a tune up yet cuze of the planing the zex shot with its colder plugs and msd ignition. but thanks.
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Old 01-13-2008, 01:45 PM
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The cylinder that came up 170 seems to be the weakest link but those numbers look good to me. I have no knowledge of N2O, but I don't think a 50- 75 wet shot would hurt, if its not used all the time. I could be wrong.
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Old 01-14-2008, 09:19 PM
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Those numbers sound good to me. I thought they are normally a little bit higher on H22's, but I could be wrong about that, but they all seem to be very close to eachother which is a good thing either way. If I were you, even if you don't do the plugs/ignition/wires, you should do the rest of the tune up. It can't hurt to replace your filters and do an oil change.
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