My Top Speed is...

[factorVIII]

i just did a minor tune up in my car (spark plugs, O2 sensor, air filter, dist. cap/rotor) and this is the deal: my car's top speed is 80 MPH, floored! :mad: abt 3400 RPM is the max that i could get my car to run. any suggestions? and how come i can't bring it to the redline even if i floor it? thanks



:( btw... the engine has 243K.


peace

[zero.counter]

Sounds like compression issues and/or engine rebuild time. Replace the fuel filters as well.

[NXRacer]

243K is a lot of miles. Do a compression test and see what you're getting. I had 185K on mine and i could only do about 110 tops floored.

[factorVIII]

:( whew! yup im still trying to replace diff parts lil by lil... 'sucks when u dont have enuff dough with ya` :( so best bet is a new engine?

[A20A1]

You might want to check for vacuum leaks... your seconndary might not be opening all the way. I'ts best too hook the seconday directly to the carb port... uhh shoot, this will get technical.. just check your vacuum lines.

[factorVIII]

is there a thread regarding abt vaccum leaks? if there is id go and fix the mofo rt away. :(

[1988starter]

their are a bunch I would suggest you remove the air bod and check all the lines going to the carb for cracks ect. Also you may want to give the carb a good cleaning.

[Justin86]

You will need a vacum pump to check. Also the compression should be around 150 PSI.

[3rd GEN]

ya sometimes when i kick mine and floor it...it seems to reach a certain speed or rpm and the it just doesn't want to go past that..
and mine is injected..so i haveno idea what it is.. but i've had mine up to 170km no prob

[POS carb]

also if u have an auto trans check the fluid level, low fluid causes all sorts of performance weirdness

[cubert]

could it possibly be the cat starting to clog up? im not really sure about it but its just a thought

[johndej]

if its manual, were you in 4th or 5th? i know you can run up to 100 i'd say in 4th.

[factorVIII]

thanks for the ideas guys yeah perhaps ill 1st check my compression and the carb. so for a 243K mileage you say the compression should read abt... 150?

[Justin86]

Originally posted by 88potacomobilelxi
could it possibly be the cat starting to clog up? im not really sure about it but its just a thought
Yea a clog cat and dirty air filter or to big ones. When your cat starts to go bad it will get red hot and smell bad. I fix both of those on my car and I hit 120mph no prob. I have 130K miles

[factorVIII]

would a hi flo cat be better than the stock one?

[Darkside]

I have 256 k and my compresion was checked last week 170-172-170-170. just my 2 cents.

[NXRacer]

Originally posted by factorVIII
would a hi flo cat be better than the stock one?

Or better yet, none at all! But if you have DEQ checks in your area then you'll need a cat


I have 256 k and my compresion was checked last week 170-172-170-170. just my 2 cents.

So if i found a motor that comp tested out to 180-180-180-180 thats should have pretty low miles and its a good motor. SCHWEET! :lol

[factorVIII]

Originally posted by Darkside
I have 256 k and my compresion was checked last week 170-172-170-170. just my 2 cents.

:werd: i hope i could get mine to sumwhere close to your results :(

[Justin86]

Originally posted by factorVIII
would a hi flo cat be better than the stock one?
Yes and you will still pass emissions.

[Justin86]

Originally posted by factorVIII
:werd: i hope i could get mine to sumwhere close to your results :(
170 PSI is pretty damn good. With that much it would be best to run 92 octane to get the most out of it. 150 should be around normal. Remember the higher the compression you have the higer octane you will need to prevent knocking.

[factorVIII]

Originally posted by Justin86
Yes and you will still pass emissions.

and is there a specific cat converter for our cars or is there universal ones? coz im thinking of upgrading the exhaust system, any suggestions?

[cubert]

if you dont have to pass an emissions test just hollow the stcok one out..thats all i did..it runs ten times better and my car has hit 120 no prob. also. I believe some companies make specific high flow cats..

[factorVIII]

ooowieee. yeah 2 bad for me i live here in california and you know how the people around here treat the environment. but yeah ill try to upgrade the exhaust system. sigh :(

[89AcCOrDmike]

damn only 80??? I'm all stock 5 speed dx and i can hit 110, and i got 240k on mine... and thats miles!!! i'm thinkin my dad pampered this car when he owned it...

[factorVIII]

could it be coz mine's an AT? but even though... it seems like the owner that had this car was ridin' it buck wild back in the days. :( there are sum signs of negligence and stupidity from the previous owner...

[Justin86]

That will surely hurt top speed.