Do race plugs make more power? Well, not really
10-12-12, 02:49 PM
#76
Vintage sportcars
This thread is old, but I dont care 
So I gave the NGK BUE spark plugs a try. They are in on my 87 FC EU-spec since two and half weeks and they do work great.
No complaints about them.
Initially I was worried about cold start performance, as there seems a lot of BS flowing around that cold plugs don't start well (or at all) in the mornings. The BUE plugs are indeed cold, the ceramic goes all the way up to the tip.
NGK does not specify a heat range for these plugs but I assume that they are somewhere in between cold and *supercoldcannotgetanycolder*
So upon installing the plugs the engine does fire right up. Given the fact that my engine has a blown coolant seal, there is always a lot of smoke attached to it, and in the morning, cold starts are always a local attraction
But venting the coolant pressure on engine shutdown makes starting a breeze without smoke since then. So the BUE are indeed a little bit rough on really cold startup (icey weather) but there is no difference, turning the key and it fires up after 2 or 3 seconds.
I found that they perform good from low rpm range to redline. (Mind you, I have the FC with distributor cap as all the S4 NA EU-specs)
So I am pretty surprised that these cheap plugs do run so well. We will se how long it lasts.
Usually the BUR7EQ/BUR9EQ are down to the point of no starting after around 2000 to 2500 km, so that makes round 1500 miles. Using half a quart of oil per gas tank. I do drive that FC like I stole it.
Oh btw that FC is completly stock (power wise, only a corksport rad).
If someone is interested I can remove a leading BUE and make some pics.
EDIT: Forgot to add, I do premix.
Steven
So I gave the NGK BUE spark plugs a try. They are in on my 87 FC EU-spec since two and half weeks and they do work great.
No complaints about them.Initially I was worried about cold start performance, as there seems a lot of BS flowing around that cold plugs don't start well (or at all) in the mornings. The BUE plugs are indeed cold, the ceramic goes all the way up to the tip.
NGK does not specify a heat range for these plugs but I assume that they are somewhere in between cold and *supercoldcannotgetanycolder*
So upon installing the plugs the engine does fire right up. Given the fact that my engine has a blown coolant seal, there is always a lot of smoke attached to it, and in the morning, cold starts are always a local attraction
But venting the coolant pressure on engine shutdown makes starting a breeze without smoke since then. So the BUE are indeed a little bit rough on really cold startup (icey weather) but there is no difference, turning the key and it fires up after 2 or 3 seconds.
I found that they perform good from low rpm range to redline. (Mind you, I have the FC with distributor cap as all the S4 NA EU-specs)
So I am pretty surprised that these cheap plugs do run so well. We will se how long it lasts.Usually the BUR7EQ/BUR9EQ are down to the point of no starting after around 2000 to 2500 km, so that makes round 1500 miles. Using half a quart of oil per gas tank. I do drive that FC like I stole it.
Oh btw that FC is completly stock (power wise, only a corksport rad).If someone is interested I can remove a leading BUE and make some pics.
EDIT: Forgot to add, I do premix.
Steven
Last edited by StevenL5975; 10-12-12 at 02:52 PM.
10-12-12, 08:24 PM
#77
Old [Sch|F]ool
Wow, even with my all stock 1980, I could get double that life out of the spark plugs. (Three-electrode style plugs)
The BUR7/9EQ plugs in my current engine are about 10x that old. Yes, when I put in the new engine ~4500km ago, I took the plugs out of the old one and transferred them right to the new one
No ignition problems ever.
10-13-12, 12:27 PM
#78
Vintage sportcars
!!!!
Wow, even with my all stock 1980, I could get double that life out of the spark plugs. (Three-electrode style plugs)
The BUR7/9EQ plugs in my current engine are about 10x that old. Yes, when I put in the new engine ~4500km ago, I took the plugs out of the old one and transferred them right to the new one No ignition problems ever.
Wow, even with my all stock 1980, I could get double that life out of the spark plugs. (Three-electrode style plugs)
The BUR7/9EQ plugs in my current engine are about 10x that old. Yes, when I put in the new engine ~4500km ago, I took the plugs out of the old one and transferred them right to the new one
No ignition problems ever. I guess that plus the oldschool dizzy cap is hitting hard on the plugs.Next I am trying some RX8 plugs, that would be 2x RE7C-L for leading and 2x RE9B-T for trailing. Aparently that should be a nice plug, its only downside seems to be the costs. A set of plugs BUR7/9EQ is over 100 $ over here...
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trickster
2nd Generation Specific (1986-1992)
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