|
|
Joined: May 2002
Posts: 85
CEG\'er
|
OP
CEG\'er
Joined: May 2002
Posts: 85 |
I had the 3L done back in Sep. I always put 92 in the tank but I recently allowed a friend to take it to the store. The car was low on gas so she put gas in it for me. Her intentions were good but I forgot to tell her to use 92 octane. She put Regular unleaded in. I live in Hawaii so the temp doesn't get too hot and it has been raining everyday since she put the gas in so its almost cold(low 60's) The problem....Last night I raced a new WRX and almost lost because there seems to be almost a miss, or hesitation if you will, at multiple points in the rpm's. I have never had this before and I was wondering if the low octane rating would cause that.
98 SE Sport. custom catback, Intrax springs, 3L, 3L valves, APEXi S-AFC, 24# injectors.
Other cars:
72 Challenger 360 motor 727 trans (used for parts)
73 Challenger 340 motor 727 trans 15.60 1/4 with bad miss and clogged fuel filter.
|
|
|
|
|
Joined: Dec 2000
Posts: 317
CEG\'er
|
|
CEG\'er
Joined: Dec 2000
Posts: 317 |
if you are running 2.5L heads with the 11+:1 compression, the octane could very well be the culprit....
2000 Cougar V6 MTX
2001 3.0L Swap w/ PnP Heads - It ran, it boomed, it RUNS AGAIN 
Nearly all suspension mods
Big ass stereo
...and more...
See Her Here
|
|
|
|
|
Joined: May 2002
Posts: 85
CEG\'er
|
|
OP
CEG\'er
Joined: May 2002
Posts: 85 |
I used the stock 98 SE upper end. I had to have the heads milled alittle when the swap was done. Water pump failure and no idiot light lead to a slight fluctuation in the heads. I was told the compression would not change with the head work though.I am runing 11+ compression though. I read that Brad used regular in his car but is it ok as long as long as I put 92 in on next fill up? I will drain the tank today if the 87 will cause problems. I just dumpped 6,000 into my 3L. I don't want to do that again anytime soon.
98 SE Sport. custom catback, Intrax springs, 3L, 3L valves, APEXi S-AFC, 24# injectors.
Other cars:
72 Challenger 360 motor 727 trans (used for parts)
73 Challenger 340 motor 727 trans 15.60 1/4 with bad miss and clogged fuel filter.
|
|
|
|
|
Joined: Dec 2001
Posts: 2,676
Hard-core CEG'er
|
|
Hard-core CEG'er
Joined: Dec 2001
Posts: 2,676 |
it's your octane, with CR that high, I wouldn't use anything less than 92. . .I was surprised to hear people use less than that on their CSVTs with a CR of 10:1, damn, 11:1, that's flirting with danger. . .
|
|
|
|
|
Joined: May 2002
Posts: 85
CEG\'er
|
|
OP
CEG\'er
Joined: May 2002
Posts: 85 |
Looks like I get to suck on my second favorite thing in the world....GAS(women are my favorite. If I added an octane booster and 92 to the half tank of 87 in there now will that make it safe to drive? Of course working with the air wing for the Marines I could just get some JP(aviation fuel) and have an ungodly high octane. 
98 SE Sport. custom catback, Intrax springs, 3L, 3L valves, APEXi S-AFC, 24# injectors.
Other cars:
72 Challenger 360 motor 727 trans (used for parts)
73 Challenger 340 motor 727 trans 15.60 1/4 with bad miss and clogged fuel filter.
|
|
|
|
|
Joined: Dec 2000
Posts: 317
CEG\'er
|
|
CEG\'er
Joined: Dec 2000
Posts: 317 |
I wouldn't worry about draining it soo much... add some octane booster to it, and try to keep it at low revs.... after half tank fill it up with premium and you should be good to go...
btw: milling the heads will raise the comp ratio no matter what... even if he just milled them a couple of thousands.... now the change could be insignificant but it is changed nonetheless
2000 Cougar V6 MTX
2001 3.0L Swap w/ PnP Heads - It ran, it boomed, it RUNS AGAIN
Nearly all suspension mods
Big ass stereo
...and more...
See Her Here
|
|
|
|
|
Joined: Jul 2000
Posts: 1,977
Hard-core CEG'er
|
|
Hard-core CEG'er
Joined: Jul 2000
Posts: 1,977 |
Siphon it out and fill it with 93 or 94 octane.
|
|
|
|
|
Joined: May 2002
Posts: 85
CEG\'er
|
|
OP
CEG\'er
Joined: May 2002
Posts: 85 |
Gas around here runs $1.70-.80 for 91 octane. Could 91 octane and octane booster be used on a regular basis without damage to O2's or cats? I also saw the two types of octane booster from NOS, one says not to use on street driven cars. Does it have something to do with possible damage to smog equipment?
98 SE Sport. custom catback, Intrax springs, 3L, 3L valves, APEXi S-AFC, 24# injectors.
Other cars:
72 Challenger 360 motor 727 trans (used for parts)
73 Challenger 340 motor 727 trans 15.60 1/4 with bad miss and clogged fuel filter.
|
|
|
|
|
Joined: Jul 2000
Posts: 1,977
Hard-core CEG'er
|
|
Hard-core CEG'er
Joined: Jul 2000
Posts: 1,977 |
Octane booster can only boost the level by a few *POINTS* not *NUMBER*. So, a bottle is only going to boost some 91 to 91.3 or so at best.I wouldn't run anything less than 93.
|
|
|
|
|
Joined: Aug 2001
Posts: 661
Veteran CEG\'er
|
|
Veteran CEG\'er
Joined: Aug 2001
Posts: 661 |
Originally posted by AirKnight:
Octane booster can only boost the level by a few *POINTS* not *NUMBER*. So, a bottle is only going to boost some 91 to 91.3 or so at best.I wouldn't run anything less than 93.
He lives in Hawaii, I have a feeling its not avilable?
Fast Cheap reliable
Pick two
|
|
|
|
|
