quote:Originally posted by pantera chris:
Questions,
Aluminum heads? rpm at idle? cam?
have you done a Leak down and compression test, even a exhaust gasket undersized can effect exhaust temperatures.
Any pr-ignition knock?
By the way I had very strange and varying problems with Champion plugs,I now swear by Autolite. Dropping the plug temperature will in turn cause a richer burn. You can do the WD-40 test on that intake, that could enplane allot if you have any leaks
Last question, does the engine overheat? May not be a problem.
This may help these are EGT temps @ 3200 rpm average 1200 F
high # 1 @ 1274 low @ 1118 #3
6000rpm ave. 1348F high 1429 #1 low 1281 #3
light brown plugs.
this is my 395ci stroker. # 64 plug.
No pinging. No indication of detonation. Iron heads. 10.2:1 cr. 750 rpm idle.
I use Champions to dial in the heat range. More variety.
I've found that the heat ranges are the same as in the 60's or at least seem to be more accurate for what they are supposed to do.
One contradictory comment on that-they burn hotter with unleaded pump gas.
Notice the threaded part of the plug in the picture. NO DEPOSITS on the edge at all. NONE. Zero.
Motorcraft would be my choice but the BF32 has been eliminated in favor of the BF42.
Going to try the F7Y. That should be a BF22 heat range?
As far as the heat gun consistency, high tube was 615, 645, 245 within seconds of each other. Depended on the angle. Cylinder #6
Entire right side, 1-4 was in the 200's. There was a 180 in there.
I need probably to read the a/f ratio. No oxygen sensor in this car.
Exhausts smell good. Water drips from tips. Nice idle.
I don't know ANYONE who has messed with these carbs in the same way.
I wanted to try this because the 1850s had a heavier idle. These are leaned for emissions.
If you hold up the "white t-shirt" fabric to the exhaust they come off with NO carbon on them.
Petronix converted distributor w/coil in a can.
Fires the car right up. Looks stock-ish.