boosting hp on a Camry?

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Old 24 Jan 2006, 10:09 pm   #1 (permalink)
onehappymadman@yahoo.com
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Default boosting hp on a Camry?

I've got a 96 camry, and I'm wondering how I could boost horsepower by
10-20 hp or so. Would a muffler with a lower backpressure help? How
about a modified air intake system?

Mike

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Old 25 Jan 2006, 09:51 am   #2 (permalink)
Jason James
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Default Re: boosting hp on a Camry?


<onehappymadman@yahoo.com> wrote in message
news:1138162152.894178.219520@g49g2000cwa.googlegr oups.com...
> I've got a 96 camry, and I'm wondering how I could boost horsepower by
> 10-20 hp or so. Would a muffler with a lower backpressure help? How
> about a modified air intake system?
>
> Mike


It's a four cyclinder? In any case those K&N style of intakes do little and
sometimes reduce intake performance by not pulling in cool air as the
existing intake does. Also there is no resonance baffle as in the OEM. These
days intakes especially on economy engines like the 2.2L are tuned for good
torque low-down and healthy high-end breathing. The exhaust is already the
largest diameter pipe I've seen on a 2L engine. The rear-muffler looks like
it came of a Mack truck. The only area I would mess with (if I so desired)
would be the ex-manifold,..tho even then I'm not convinced much would be
gained.

Really, those after-market items may look-good,..but that's where it ends in
most cases. I f you want some serious neddy increase, check out a turbo-kit
at Burien Toyota website.

Jason


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Old 25 Jan 2006, 05:06 pm   #3 (permalink)
Pszemol
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Default Re: boosting hp on a Camry?

<onehappymadman@yahoo.com> wrote in message news:1138162152.894178.219520@g49g2000cwa.googlegr oups.com...
> I've got a 96 camry, and I'm wondering how I could boost horsepower by
> 10-20 hp or so. Would a muffler with a lower backpressure help? How
> about a modified air intake system?


I am guessing you have a lot of miles on the engine...
Have you tested the compression ?
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Old 25 Jan 2006, 06:36 pm   #4 (permalink)
onehappymadman@yahoo.com
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Default Re: boosting hp on a Camry?


Pszemol wrote:
> <onehappymadman@yahoo.com> wrote in message news:1138162152.894178.219520@g49g2000cwa.googlegr oups.com...
> > I've got a 96 camry, and I'm wondering how I could boost horsepower by
> > 10-20 hp or so. Would a muffler with a lower backpressure help? How
> > about a modified air intake system?

>
> I am guessing you have a lot of miles on the engine...
> Have you tested the compression ?



My 4-cylinder engine's got about 131,000 miles on it.

What exactly would testing the compression do? Would it mean I need
new pistons...?

On that note, what other maintenance would increase hp / efficiency?
I've done the usual (coolant, tranny, diff oil, regular oil+filter) but
haven't done anything extreme with it.

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Old 25 Jan 2006, 06:53 pm   #5 (permalink)
onehappymadman@yahoo.com
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Default Re: boosting hp on a Camry?


Pszemol wrote:
> <onehappymadman@yahoo.com> wrote in message news:1138162152.894178.219520@g49g2000cwa.googlegr oups.com...
> > I've got a 96 camry, and I'm wondering how I could boost horsepower by
> > 10-20 hp or so. Would a muffler with a lower backpressure help? How
> > about a modified air intake system?

>
> I am guessing you have a lot of miles on the engine...
> Have you tested the compression ?



I just googled the procedure... interesting. Basically remove all four
spark plugs, and test the compression on each cylinder with a pressure
gauge, right?

Is this something the dealer should do, or should I take the car to an
independent mechanic?

Thanks,

Mike

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Old 26 Jan 2006, 12:28 am   #6 (permalink)
Jason James
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Default Re: boosting hp on a Camry?


<onehappymadman@yahoo.com> wrote in message
news:1138236839.575574.249790@g43g2000cwa.googlegr oups.com...
>
> Pszemol wrote:
> > <onehappymadman@yahoo.com> wrote in message

news:1138162152.894178.219520@g49g2000cwa.googlegr oups.com...
> > > I've got a 96 camry, and I'm wondering how I could boost horsepower by
> > > 10-20 hp or so. Would a muffler with a lower backpressure help? How
> > > about a modified air intake system?

> >
> > I am guessing you have a lot of miles on the engine...
> > Have you tested the compression ?

>
>
> I just googled the procedure... interesting. Basically remove all four
> spark plugs, and test the compression on each cylinder with a pressure
> gauge, right?
>
> Is this something the dealer should do, or should I take the car to an
> independent mechanic?


When an engine loses sufficient compression to effect engine performance,
and that comprssion loss is due to worn rings, the amount of engine fuming
or "blow-by" would be very obvious and smelly.

To test for blow-by,..allow engine to heat up. While idling, remove the
plain black hose from the cam-cover into the throttle body. At idle the PCV
valve should be essentially inoperative,..but some folks like to remove its
hose and block it off with a twisted end of a small rag. Fuming which is
thick and continuous, especially "pulsating" indicates a bad set of rings on
one or more pistons. A high mileage engine (100,000+ miles) will have *some
light* fumiing,..which is to be expected. If there is none
discernable,..that is a very good engine.


If the compression loss is due to a damaged valve, then the engine would
probably cause an "engine" icon to light on the dashboard due to excessive
mixture variation (goes lean due air or exhaust leakback on
intake-stroke),..so if the engine is not using undue oil and idles smoothly,
the rings and valves are probably OK.
Sometimes an old cam-belt can stretch causing reduced performance or a
muffler can block partially, but at least in the latter case, the loose
muffler-baffles will make a lot of noise as exhaust pulses pass thru.

I find my '96 4 cyl has a definite "kick in" power surge particularly in
second gear (manual) once revs hit 3700 thru to 5200. Its these indicators
which tell you how the engine performance is going. Ashort dyno test will
tell you whats going on. At the wheels the 4cyl should provide close to
100hp or 75kw at the rated engine rpm,..airconditioning off of course.

Jason


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Old 26 Jan 2006, 07:05 am   #7 (permalink)
Bassplayer12
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Default Re: boosting hp on a Camry?

> I've got a 96 camry, and I'm wondering how I could boost horsepower by
> 10-20 hp or so. Would a muffler with a lower backpressure help? How
> about a modified air intake system?


The following is an opinion, based on personnal experience: I have used a
good quality synthetic oil (engine & tranny) in my last 3 cars (90 Plymouth
Grand Voyager, 93 & 98 Camrys) and a couple of BMW motorcycles (85 K100LT &
93 K1100LT) and always found the engine more eager to rev. Less friction.
Slightly better fuel mileage. Better starting in winter (cars LOL). This
opinion is shared by other people.


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Old 26 Jan 2006, 10:45 am   #8 (permalink)
Pszemol
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Default Re: boosting hp on a Camry?

"Bassplayer12" <perettij@nbnet.nb.ca> wrote in message news:TO3Cf.1525$VV4.42239@ursa-nb00s0.nbnet.nb.ca...
>> I've got a 96 camry, and I'm wondering how I could boost horsepower by
>> 10-20 hp or so. Would a muffler with a lower backpressure help? How
>> about a modified air intake system?

>
> The following is an opinion, based on personnal experience: I have used a
> good quality synthetic oil (engine & tranny) in my last 3 cars (90 Plymouth
> Grand Voyager, 93 & 98 Camrys) and a couple of BMW motorcycles (85 K100LT &
> 93 K1100LT) and always found the engine more eager to rev. Less friction.
> Slightly better fuel mileage. Better starting in winter (cars LOL). This
> opinion is shared by other people.


How much of this is just the "placebo effect"... ?
I mean, a thing like auto-suggestion: "I have spent 3-4 times more for
the oil, it must be working much better!". Human brain likes to play
tricks on us. That is why we use test equipment to measure improvements
to prevent our senses to lie to us... ;-)
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Old 26 Jan 2006, 03:39 pm   #9 (permalink)
davidj92
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Default Re: boosting hp on a Camry?

Pszemol wrote:
snip
> How much of this is just the "placebo effect"... ?
> I mean, a thing like auto-suggestion: "I have spent 3-4 times more for
> the oil, it must be working much better!". Human brain likes to play
> tricks on us. That is why we use test equipment to measure
> improvements to prevent our senses to lie to us... ;-)


I can't cite a source but, I think it's a proven fact synthetic oil adds
appx 5% HP gain. If driven sensibly, this should equate to slightly better
fuel mileage as well. Also proven to make engines last longer if changed on
proper schedule.
davidj92


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Old 26 Jan 2006, 04:06 pm   #10 (permalink)
Pszemol
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Default Re: boosting hp on a Camry?

"davidj92" <davidj92REMOVE@sigecom.net> wrote in message news:f9edndvq-5Hs3ETeRVn-tA@sigecom.net...
> I can't cite a source but, I think it's a proven
> fact synthetic oil adds appx 5% HP gain.


Maybe for new engines... old engines, hold in compression
by gunk from burning mineral oil maybe washed out with
syntetic oil additives and the result might be worse than
with mineral oil... It is not good idea to change oil
in an old engine.
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