whats up guys, bought a 99 si today and wanted to get some opinions on it...timing belts all that stuff, doesnt look like anythings been done to it. it is all stock with 95k, also what gas do you guys run in these cars? premium or does it matter..

 

Congrats, used to have one myself.

91 Octane at least, due the timing belt, valve adjustment, and full fluid flush. A minor tune-up wouldn't hurt either.

Welcome to Honda-Tech, search before you ask questions, they've probably been answered before

 

Yes, run 92/93 octane. The DOHC VTEC engines require them.

Change:

Timing belt
Water pump
Thermostat
Fuel filter
Air filter
Spark plugs
Ignition wires
Check cap and distributor, clean or replace if necesary
Transmission fluid
Valve adjustment

Good luck on it not getting stolen.

 

i dont know if youd have to run 91 octane the b16a2 isnt too greatly high compression but maybe... good luck with the car

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dimitri_EG8 a.k.a. Dimi &raquo;</TD></TR><TR><TD CLASS="quote">
Good luck on it not getting stolen.</TD></TR></TABLE>

 

i dont think u need 91 octane... but not sure.. anyways do a basic tune up and get everything checked out... do timing belt and water pump for sure.. also check into coolant flush and tranny flush

 

your good with 89

 

what color si?

 

Manual recommends at least 91. Honda comensates for the cheap-skates that are going to put less than 91 in it, however it recommends 91 just like it recommends everything else...

 

its a black/black....owner's manual said 91 octane but 87 fine but it will have less performance, so looks like ill just play it by how much money i got at the time, how hard is water pump/timing belt? just get oem replacement or is there better stuff to get?


Modified by nc99si at 8:29 PM 5/30/2005

 

I have a 99 si and I use 93 octane, and I seem to get a couple miles to the gallon more compared to 87. I have run 87 octane with no prob's though.

 

word, i have an Ej1 with a b16a2 in it, and i get shittier gas mileage with 87 octane, and seems a lil hesitant.
I got 25.5mpg with 87.
29.9 with 89
and the next tank will be 91

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTECin5th &raquo;</TD></TR><TR><TD CLASS="quote">word, i have an Ej1 with a b16a2 in it, and i get shittier gas mileage with 87 octane, and seems a lil hesitant.
I got 25.5mpg with 87.
29.9 with 89
and the next tank will be 91</TD></TR></TABLE>
thats because its misfiring

whoever said the compression isnt that high, you are crazy

you need to run the highest premium available. its regulated by the state. at least 91 octane should be available, run that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by givemeyourstd &raquo;</TD></TR><TR><TD CLASS="quote">I have a 99 si and I use 93 octane, and I seem to get a couple miles to the gallon more compared to 87. I have run 87 octane with no prob's though.</TD></TR></TABLE>

NO! Don't mix octanes. If you buy 91, stay with 91 until you have damn near nothing left in the tank. If you go with 87, stay with 87 until the tank is almost dry. It's a bad idea to mix octanes.

 

why is that?
they just level each other

meaning half a tank of 87 and half a tank of 91 = 89 octane.

 

nah, they dont mix like that, i read an article one time saying that by mixing 87 and 93 in the right proportions you get higher octane that 93.....seriously not bs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nc99si &raquo;</TD></TR><TR><TD CLASS="quote">nah, they dont mix like that, i read an article one time saying that by mixing 87 and 93 in the right proportions you get higher octane that 93.....seriously not bs. </TD></TR></TABLE>

That article was bullshit . My dad's a chemist if you want to argue, but I doubt I'd even need to dip into his expertise to rape that little bit of misinformation .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dimitri_EG8 a.k.a. Dimi &raquo;</TD></TR><TR><TD CLASS="quote">Yes, run 92/93 octane. The DOHC VTEC engines require them.

Change:

Timing belt
Water pump
Thermostat
Fuel filter
Air filter
Spark plugs
Ignition wires
Check cap and distributor, clean or replace if necesary
Transmission fluid
Valve adjustment

Good luck on it not getting stolen.</TD></TR></TABLE>

do all these things, or make sure they have been done by the previous owner. ask them. Run 91 octane or higher, do what the manual calls for.

 

don't forget to flush your brake and clutch fluid, rotate tires, and check tire pressure.

 

i say run 91/92/93 which ever you got...

 

i run 93, but one time my bro stuck a few gallons of 89 in there. I just added some octane booster tho.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nc99si &raquo;</TD></TR><TR><TD CLASS="quote">nah, they dont mix like that, i read an article one time saying that by mixing 87 and 93 in the right proportions you get higher octane that 93.....seriously not bs. </TD></TR></TABLE>
riiiiight

please explain to me how that works.
im all ears.

 

he obviously has no grasp of reality, thats like mixing 2 base chemicals and getting an acidic one...not gonna happen

 

congrats on the purchase.. i just bought one myself.. such an awesome car!

 

There is a reason why the sticker on the gas tank door says PREMIUM UNLEADED FUEL ONLY.