C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fuel Injector Information

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Old Nov 30, 2017 | 12:24 PM
  #61  
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Originally Posted by aklim
I think your bigger concern should be to find a gas station that has fresh gas. IOW, avoid the Mom & Pop stores. Get something with heavy traffic instead of a car every 2 hours. Ethanol has been talked like it is asking someone to take a dump in your tank. If you were having your boat sit at the marina in the water all day long, it might be an issue. Otherwise, IMO, just get fresh gas and forget it. I used to live where they had no ethanol in 93 octane. Didn't seem to help mileage much, if any at all.

As to plugs, get whatever NGK recommends. Install them. Run the car and night and spray a fine mist of water around the wires to see if they are leaking.
Yes, I know about not using Mom & Pops.... I use either Conoco or Shell. Our choices are 85,87 or 91 octane. Traffic is very heavy at both stations... Im 11 miles from the Royal Gorge Bridge... We have a ton of tourism pretty much year round.

For the plugs why is everyone stuck on NGK??? Just curious... Why not use the AC Delco R43TS ???

My wires are brand new Taylors

Last edited by 81c3; Nov 30, 2017 at 12:25 PM.
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Old Nov 30, 2017 | 12:28 PM
  #62  
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Originally Posted by 81c3
Yes, I know about not using Mom & Pops.... I use either Conoco or Shell. Our choices are 85,87 or 91 octane. Traffic is very heavy at both stations... Im 11 miles from the Royal Gorge Bridge... We have a ton of tourism pretty much year round.

For the plugs why is everyone stuck on NGK??? Just curious... Why not use the AC Delco R43TS ???

My wires are brand new Taylors
Then you should be fine as long as the ECM doesn't pick up pinging to use whatever you want.

You could. Just happens to be what is common.

OK. As long as they are not leaking.
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Old Nov 30, 2017 | 12:33 PM
  #63  
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Originally Posted by aklim
Then you should be fine as long as the ECM doesn't pick up pinging to use whatever you want.

You could. Just happens to be what is common.

OK. As long as they are not leaking.
I assembled the boots to the plugs with dielectric grease as well at the cap towers.

My knock sensor was also replaced when I did the coolant flush and torqued to 14lb/ft so I believe thats ok...

Just seems strange that it didnt do it at all last night... I deliberately tried to load the engine even on the same stretch of road!!!
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Old Nov 30, 2017 | 01:30 PM
  #64  
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Originally Posted by 81c3
I assembled the boots to the plugs with dielectric grease as well at the cap towers.

My knock sensor was also replaced when I did the coolant flush and torqued to 14lb/ft so I believe thats ok...

Just seems strange that it didnt do it at all last night... I deliberately tried to load the engine even on the same stretch of road!!!
What I meant was the the ECM will tell you if it is ok once you hook up a scanner. Say you see a lot of knock at 85, switch to 87 and 91 and see which one gives you the least knock. If 87 and 91 are the same, stick with 87.
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Old Nov 30, 2017 | 01:41 PM
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Originally Posted by 81c3
Sorry, Im not as smart as you I suppose.
Its ok. We all want to help everybody and have good intentions!
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Old Nov 30, 2017 | 01:49 PM
  #66  
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Originally Posted by 81c3
Yes, I know about not using Mom & Pops.... I use either Conoco or Shell. Our choices are 85,87 or 91 octane. Traffic is very heavy at both stations... Im 11 miles from the Royal Gorge Bridge... We have a ton of tourism pretty much year round.

For the plugs why is everyone stuck on NGK??? Just curious... Why not use the AC Delco R43TS ???

My wires are brand new Taylors
if you cant get pure gas Shell 91 in your area is the best you can buy.

People buy NGK because they are a premium plug that just seem to work in any application.
AC R43TS is cheap junk made out of the Autolite factory in China. They are not what they were 20 years on back.
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Old Nov 30, 2017 | 04:50 PM
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Originally Posted by Cjunkie
if you cant get pure gas Shell 91 in your area is the best you can buy.

People buy NGK because they are a premium plug that just seem to work in any application.
AC R43TS is cheap junk made out of the Autolite factory in China. They are not what they were 20 years on back.
So I saw a few guys saying that a lower octane fuel is more volatile and I should use that instead of the 91.... I always thought the 91 was the most ping resistant... then some say I wont need it with a low compression L98.... I have iron heads, not aluminum... maybe thats why? Sometimes **** get confusing...
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Old Nov 30, 2017 | 05:40 PM
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Originally Posted by 81c3
So I saw a few guys saying that a lower octane fuel is more volatile and I should use that instead of the 91.... I always thought the 91 was the most ping resistant... then some say I wont need it with a low compression L98.... I have iron heads, not aluminum... maybe thats why? Sometimes **** get confusing...
What did your manual say
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Old Nov 30, 2017 | 06:33 PM
  #69  
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Originally Posted by Cjunkie
Same ones in my car kael
You mean Lucas? Or EV1?

I noticed the EV1s had rubber boots on the end, mine don't, they are metal with a inverted conical end.
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Old Nov 30, 2017 | 09:23 PM
  #70  
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Originally Posted by 81c3
So I saw a few guys saying that a lower octane fuel is more volatile and I should use that instead of the 91.... I always thought the 91 was the most ping resistant... then some say I wont need it with a low compression L98.... I have iron heads, not aluminum... maybe thats why? Sometimes **** get confusing...
The plugs i suggested are for iron heads.
91 will be the most ping resistant. As for reg fuel out of pumps Shell V-Power will be the best you can get.
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Old Nov 30, 2017 | 09:23 PM
  #71  
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Originally Posted by kael
You mean Lucas? Or EV1?

I noticed the EV1s had rubber boots on the end, mine don't, they are metal with a inverted conical end.
Lucas
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Old Dec 3, 2017 | 06:39 AM
  #72  
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Originally Posted by Cjunkie
The plugs i suggested are for iron heads.
91 will be the most ping resistant. As for reg fuel out of pumps Shell V-Power will be the best you can get.
Glad someone else brought this up. My understanding is that 87 octane is more volitale and prone to pre or post detonation and therefore pinging. I would think using it in this instance would compound the problem.
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Old Dec 5, 2017 | 01:46 PM
  #73  
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FIC = Fuel Injector Connection, correct? Is this currently the best place to get a set of 30lb? If I'm way over budget already can I go with the rebuilt red ones for $200?

I'm going thru Minneapolis this week, could pick up a set at TPIS listed for $425. They look different from the FIC ones.

I'm using a Miniram.




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Old Dec 5, 2017 | 01:53 PM
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Originally Posted by ryank9398
FIC = Fuel Injector Connection, correct? Is this currently the best place to get a set of 30lb? If I'm way over budget already can I go with the rebuilt red ones for $200?

I'm going thru Minneapolis this week, could pick up a set at TPIS listed for $425. They look different from the FIC ones.

I'm using a Miniram.




I'd go with rebuilt ones. I have unless there is some reason to go with brand new.

They should. The FIC red ones are the later design compared to the TPIS reddish-brown ones.

Miniram won't know the difference.
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Old Mar 17, 2019 | 01:21 PM
  #75  
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Identical prob here. There is another thread I started.
Still have not pulled the plenum to do the injectors to see if that's it.
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