Plug size
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socofn
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Plug size
In amongst my other issues i found that I have two different size spark plugs, larger on the drivers side. I will post pictures of the plugs side by side when the wife brings the camera home. Not sure why the PO did this. JP
74, MONEY EATER
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airbur
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Re: Plug size
Are you sure they are different sizes or maybe just different brands/types? All be threads should be he same on the block.
Sold: 1970 w/427W Injected Stroker
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Moab Mike
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Re: Plug size
airbur wrote:Are you sure they are different sizes or maybe just different brands/types? All be threads should be he same on the block.
Funny you say that, my wife's 4runner came with factory plugs on one side and replacements on the other. i guess the PO needed to save some mula! WHAT AN
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cobshane
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Re: Plug size
76fordbronco wrote:airbur wrote:Are you sure they are different sizes or maybe just different brands/types? All be threads should be he same on the block.
Funny you say that, my wife's 4runner came with factory plugs on one side and replacements on the other. i guess the PO needed to save some mula! WHAT AN
Must of been to much interference for the guy working on it. Was it the left side?
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akaFrankCastle
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Re: Plug size
Weren't there different size plugs required for some different years of heads? If so, wonder if this motor is running two separate years/styles of heads.
Stroppe'd
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project
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socofn
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Re: Plug size
Different size (diameter) bigger around. Yes they were on the left/drivers side. The guy I bought it from had it for 6yrs and never did anything with it as he has a Moab special. I replaced the ones on the right side and re-gapped the other ones. I will buy replacements when I get a chance. No way it is running as both fuel tanks are lying on the garage floor. JP
74, MONEY EATER
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Shawns Fords
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Re: Plug size
My 68 302 4V head had larger plugs 13/16" than later models 5/8" I used to know this all by heart but have lost memory from many various brands of wobbly pops. more than likely someone changed a head out when another one was broken somewhere down the road.
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socofn
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Re: Plug size
That is what I kinda figured, someone along the line replaced a head. I will make it work till I can get the funds together to replaced the engine. JP
74, MONEY EATER
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Viperwolf1
Re: Plug size
Yep, someone swapped a head. Early plugs were 18mm thread and later plugs were 14mm. The change was sometime mid-70's.
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Moab Mike
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Re: Plug size
coberlyshane wrote:76fordbronco wrote:airbur wrote:Are you sure they are different sizes or maybe just different brands/types? All be threads should be he same on the block.
Funny you say that, my wife's 4runner came with factory plugs on one side and replacements on the other. i guess the PO needed to save some mula! WHAT AN
Must of been to much interference for the guy working on it. Was it the left side?
Passenger side was replaced by the PO I'm guessing around 115K miles, drivers side was factory original @ 155K miles when I replaced them a month ago. I only new they were bad because the engine started missing. I replaced them all and it was more difficult on the DS.