Crossfire upgrades
#21
Team Owner
Pro Mechanic
To actually verify fuel distribution on any induction system you would need thermalcouples on each exhaust tube to monitor temperatures. Visually checking the spark plugs could only detect gross distribution problems. Some say they can do this with an hand held IR gun - I'm not a believer of that either.
How you going to use an IR gun? You cold idle, but that's it. Underway -where it matters, ain't gonna work.
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Last edited by Tom400CFI; 07-13-2018 at 02:13 PM.
#22
Team Owner
Pro Mechanic
#25
Le Mans Master
Member Since: Oct 2002
Location: Las Vegas - Just stop perpetuating myths please.
Posts: 7,098
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Well if you don't need to smog it to register and license it then the sky is the limit. Start with basic foundation builders like headers, free flowing exhaust and a good intake like the Renegade. I don't think the savings in porting your stock manifold justifies the effort when there is a quality piece on the vendors self for a reasonable price. Once you have the car running well with a good intake and exhaust then you can make internal motor improvements one at a time so you can sort things out as you go. Unless you have a lot of sbc experience and with CFI then have at it but if you did have a lot of experience you probably won't be here asking for advice. Making changes one at time allows you to keep track of the effects - good or bad - and recover from mistakes if needed.
Good luck.
Good luck.
#26
Team Owner
Pro Mechanic
listen to ^this guy giving CFI advice....and he doesn't have one! I especially like the part about the value of porting the intake. Cardo....you know what a WELL ported CFI intake is worth in the 1/4 mile? I do. You know how much it costs to port a CFI intake? I do.
Prove what; that plug reads are every bit as good as thermocouples? Sure I can prove it. Come here, and I'll show you. Thermocouples have some error. The error doesn't matter much, but there is some. When you're reading plugs you're reading the actual combustion event -if you do it right. Can't get much more accurate than that. Thermocouples are easy though and give you (virtually) real time data. So for sure they're easier to use but they're not better. They also cost money. Not many on here are going to go buy an 8 cylinder EGT set up. Not many are going to read plugs either, unfortunately, but at least it's attainable/doable for anyone, and for no money.
I'm not avoiding anything. An IR gun is not the way to do it. Unless you want to remove your hood, and stand on the fender well while your buddy drives your car.
I'm not avoiding anything. An IR gun is not the way to do it. Unless you want to remove your hood, and stand on the fender well while your buddy drives your car.
#27
Safety Car
All I'm saying is that my '84 CFI has surprised a few people, and I'm sure I don't have all the right answers.
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cardo0 (07-13-2018)
#28
Team Owner
Pro Mechanic
Yep, that is true. An IR gun would work on a dyno. Good point.
#29
Drifting
I went with a mild cam, renegade, 1.65 rockers, heads, full smog stuff delete, and melrose exhaust system.
i ended up going with an ebl flash ecm to get everything running right...
i ended up going with an ebl flash ecm to get everything running right...
Last edited by Gibbles; 07-17-2018 at 10:04 PM.
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yakmastermax (02-28-2023)