Spark plug indexing
#1
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Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
Spark plug indexing
indexing washers, two kits available from Moroso
Part No. 71900
Moroso Spark Plug Indexing Washers: Tapered Seat, .010", .021", .032"
Part No. 71910
Moroso Spark Plug Indexing Washers: Flat Seat; .043", .050", .064"
Which one ? It's for a LO3, stock swirl port heads.
When I tighten them, will I still be tighteningf them to torque specs, or will the washers affect that, so I'll only be able to go hand tight plus a tiny tiny bit more ?
Part No. 71900
Moroso Spark Plug Indexing Washers: Tapered Seat, .010", .021", .032"
Part No. 71910
Moroso Spark Plug Indexing Washers: Flat Seat; .043", .050", .064"
Which one ? It's for a LO3, stock swirl port heads.
When I tighten them, will I still be tighteningf them to torque specs, or will the washers affect that, so I'll only be able to go hand tight plus a tiny tiny bit more ?
#4
Originally Posted by vorgath
indexing washers, two kits available from Moroso
Part No. 71900
Moroso Spark Plug Indexing Washers: Tapered Seat, .010", .021", .032"
Part No. 71910
Moroso Spark Plug Indexing Washers: Flat Seat; .043", .050", .064"
Which one ? It's for a LO3, stock swirl port heads.
When I tighten them, will I still be tighteningf them to torque specs, or will the washers affect that, so I'll only be able to go hand tight plus a tiny tiny bit more ?
Part No. 71900
Moroso Spark Plug Indexing Washers: Tapered Seat, .010", .021", .032"
Part No. 71910
Moroso Spark Plug Indexing Washers: Flat Seat; .043", .050", .064"
Which one ? It's for a LO3, stock swirl port heads.
When I tighten them, will I still be tighteningf them to torque specs, or will the washers affect that, so I'll only be able to go hand tight plus a tiny tiny bit more ?
#6
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Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
Indexing alone may not be worth 5 hp, however grinding down the electrode slightly, double checking the gapping and indexing all together may do something.
Should the opening be towards the exhaust valve, intake valve or simply in between ?
Should the opening be towards the exhaust valve, intake valve or simply in between ?
#7
The idea is to face the opening away from the intake valve so that the intake stream doesn't "blow" out the spark or wet the plug when there's an excessive amount of fuel entering the chamber.
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Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
Use a sharpie to make an index line. The idea behind indexing isn't so much to avoid blowing the plug out as it is to avoid shrouding the spark, exposing the mixture to the fullest possible spark.
I agree with LJ, though.
I agree with LJ, though.
Last edited by Stekman; 04-02-2006 at 12:40 AM.
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