i gotta LS/V
95 b18 LS block w/ a 92 GSR HEAD n TRANS....
can i use 87 octane in my car?

 

why would you want to do that? wouldnt you want the highest octane for more combustion.

 

i think u can, car will run/ feel like crap, Just pay the extra 2 dollars and put premium in it

 

dont be cheap u dont wna break the engine just give it premium and it will be good

 

Holly knee-jerk reactions.................. What is wrong with you chuckle-heads?

Hear this now and understand it later, higher octane fuel does NOT benefit low compression engines. PERIOD. And VTEC does not automatically = premium octane fuel. Look at all the SOHC VTEC Civics out there. What fuel does Honda specify for them? Oh that's right 87 octane.

OP, you didn't mention changing any thing like pistons or going with a crazy thin HG on a shaved down head so here are some rough numbers for reference.

Stock B18B compression is ~9.2:1
Stock B18B + B17A1 head, compression is ~9.5

Honda recommends for all 86-01 Integra RS/LS/GS, use 87 octane fuel, preferably from a TopTier fuel provider like Shell. http://www.toptiergas.com That being said, your engine and compression ratio do not warrant premium octane. A VERY general rule of thumb is 10.0:1 or higher will "need" premium octane fuel or higher. On the other hand you will want to have your car tuned so you can get the most power + efficiency out of your setup. There are a lot of factors such as timing, ECU programing, etc... that can lead to knocking an pinging. Just throwing high octane fuel at an un-tuned setup to try preventing knock & ping is not the right way to go about it.

 

Since the B18B does not have a knock sensor, I would say that if you're modifying and tuning your car, you should run at least 91 octane just to be safe, since the car will not retard timing by itself if pre-detonation occurs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PatrickGSR94 &raquo;</TD></TR><TR><TD CLASS="quote">Since the B18B does not have a knock sensor, I would say that if you're modifying and tuning your car, you should run at least 91 octane just to be safe, since the car will not retard timing by itself if pre-detonation occurs.</TD></TR></TABLE>

 

well i was jus wondering..........................i do put 92 but i wanted to know if u can run 87 i dont think iwas going to change..here in hawaii its all like a couple cents diff anyways................
92 is like $2.80 gal.

 

if the block is still bone stock just run 87