88 L98

hey guys, list all the free mods you know of. I'm low on money right now (because of interior) and still wanna be able to do stuff. so list your free mods or very cheap ones.





[Modified by 88 L98, 12:17 AM 8/27/2003]

jmrl98

open air cleaner lid and plenum port here :thumbs: :seeya

65Z01

Here are a few free of los $$ mods:
-remove the "frisbee" disk from the front of the water pump pulley. - 10hp
-cut-back spark ground electrodes (method on my site). - 8-10hp
-cut air filter lid with K&N filter - 10hp
-TB coolant bypass. - ?? hp, but simplifies working on the TB
-remove spare & jack and use rubber tubing to isolate the carrier. - 40lbs (~5hp)
-160deg F thermostat & aux fan switch, then use my C4 Tech Tip to wire the aux fan switch to control both fans. - 10hp
-AFPR, no HP gain by itself but it is needed to add more fuel at WOT as you increase air flow.

The above changes should cost maybe $200 or less and some are virtually free save for labor involved.

When you get some $$ saved plan on doing exhaust upgrades like a hi-flow cat, cat-back and either full-length headers or a mandrel-bent front Y. These will give a very nice power boost.

Another "fun" and performance enhancer is a Trans-Go shift kit and 2,000rpm TC for your A4.

Have fun with the new toy.

jennykayes84vette

Congrats on your ride. Wish I had folks like that. My first ride was a 69 chevy pickup LB. no ps, pb, or pw, hell it only had 55 mph A/C. Good Luck on your Car. Looks great already.

:steering:

Lone Ranger

-Throttle Body coolant bypass

-Open air lid

-aFe

-160 Thermostat

-Dielectric compound at all high voltage ignition connections (it helps)

CentralCoaster

Ported plenum

Ported exhaust manifolds

Cut air filter lid

Removed rear MAF screen

Spare tire & carrier delete

Throttle body coolant bypass

180 thermostat


Next, I plan to gut the smog pump, and maybe gut the cat.

vader86

I suggest you do everything 65Z01 has suggested.

bstirn

:iagree:

Scoob

Not trying to start trouble but I have a hard time believing that you'll get 43 - 45 hp from those mods.

vader86

You might want to read his site, he has ETs to back up his claims.

Southern Comfort

Can you really do something for FREE on this car?

65Z01

Scoob, it pays to be skeptical, so no offense taken, but those numbers are what I gleaned from trap speed, normalized for weather conditions; the final HP number was from a dyno pull. Of course I also have extensive exhaust mods which may effect potential air flow here. But the numbers at least show what can be expected after he does the exhaust which will bring nice gains of themselves.

OK, to be conservative lets say he can expect to see 35-40chp gain (the weight reduction is equivalent to the 5hp) from those mods with good tuning. That means spending some at the strip and/or dyno and tuning base timing and fuel pressure. I've had my Vette on the dyno twice, made countless tuning passes down the 1/4mi and used scan tool results to try and get the most from my mods; and it has paid off well.

When you consider that doing heads, cam and headers should add another 70chp or so to bring the power up to around 370chp (see the L98 mods results table on my site), you realize that there is great potential in our underrated L98 and it responds well to correct mods.

For another real success story take a look at the results of mods Vic'89 has done to his L98. He too has realized excellent results from some rather inexpensive mods, as well as from exhaust mods similar to mine...that is until he recently added LT headers to his mods list. Though I'm still running very low 13s in excellent weather he is running well into the 12s.

88 L98

yea I'd have money if it wasnt for my interior. I just spent 450 on weatherstripping and now my a/c is out and I need a new compressor and a/c line then carpet, seats, and dash pieces. so i should hopefully be done with that crap and start on engine parts in around 4 months :hurray:

dbwade36

Free or cheap,
Cut lid
Spare tire/jack delete
Bose stereo speakers/boxes deleted
K&N added
TB adaptor installed
180 degree stat installed
Changed to rapid fire plugs
some of these cost a little, but not much.
You can also cut the screens from MAF, but I won't do that
Or relocate MAT sensor, which I have not done either

88 L98

I have already cut the screens out of my MAF and my intake is already modified I think. it is cut out except for a few slots across it. I'm gonna do the frsibee very soon. what kinda serpentine belt do I need to replace when i do it?

tobijohn

65Z01 wrote:
"remove spare & jack and use rubber tubing to isolate the carrier. - 40lbs (~5hp)"

Is it safe to say that for every 8 lbs of weight eliminated, you can pick up 1 HP? Is this a constant or does the HP gain diminish as you remove more weight? So if I eliminated my 105 lb wife, I would gain 13 HP? :)

65Z01

:lolg: :lolg: :lolg: :lolg: :lolg:

Well that's the equation...but you might lose a little more than that if you got rid of her.... :eek:

The rule of thumb for a car in our weight range is that 80lbs change is equivalent to about 10hp change. There are equations on my site (link in my sig below) that you can use to calculate CHP from trap speed and launch weight. Plug in some various numbers for your vehicle weight and see how the CHP number changes, or hold CHP constant and see how trap speed changes with vehicle weight.


[Modified by 65Z01, 2:08 AM 8/27/2003]

Cameron Oliver

What is ur website im very interested in ur mod set ups and details thank you.

THE 383 admiral

MY tuning. Much better VS GM.

ClaudioC4

What is your sit address?