can you cut the crush washers on a series 4?
#2
mad scientist
Re: can you cut the crush washers on a series 4?
Originally posted by tweaked
I was going to change my plugs tonight and I was wondering if I could cut the crush washers off on a series 4 motor?
I know it can be done on a series 5.
I was going to change my plugs tonight and I was wondering if I could cut the crush washers off on a series 4 motor?
I know it can be done on a series 5.
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#11
mad scientist
Originally posted by supergoat
I cut the washers off the "top" plugs, but not the bottom.
I cut the washers off the "top" plugs, but not the bottom.
#13
mad scientist
Originally posted by supergoat
Been that way for over 100 miles so far, no ill effects, but I'll pull the plug and see if it has marks on it later.
Been that way for over 100 miles so far, no ill effects, but I'll pull the plug and see if it has marks on it later.
#15
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Mazdaspeed7 runs his car preaty high up in the rpm range, according to prior posts. So maybe that is why his trailing plugs got nicked. Due to the increased rpms the clearence would be shortened and maybe enough to contact the plug. Reving to a lower peak of maybe 7500 rpms might prevent it from happening.
#16
mad scientist
Originally posted by Samps
Mazdaspeed7 runs his car preaty high up in the rpm range, according to prior posts. So maybe that is why his trailing plugs got nicked. Due to the increased rpms the clearence would be shortened and maybe enough to contact the plug. Reving to a lower peak of maybe 7500 rpms might prevent it from happening.
Mazdaspeed7 runs his car preaty high up in the rpm range, according to prior posts. So maybe that is why his trailing plugs got nicked. Due to the increased rpms the clearence would be shortened and maybe enough to contact the plug. Reving to a lower peak of maybe 7500 rpms might prevent it from happening.
#17
mad scientist
Originally posted by mazdaspeed7
I can see I am going to have to take a pic of the rotor housing. There is NO WAY the trailing plugs could hit anything inside the chamber. Give me a few minutes and Ill have a few pics up. Ill get a pic of the clearance of the leading too.
I can see I am going to have to take a pic of the rotor housing. There is NO WAY the trailing plugs could hit anything inside the chamber. Give me a few minutes and Ill have a few pics up. Ill get a pic of the clearance of the leading too.
Last edited by mazdaspeed7; 01-15-02 at 10:06 PM.
#18
mad scientist
I just measured a 1990 n/a rotor housing I had in the garage and a NGK plug(leading) WITH the cruch washer cut off. Heres what I got:
trailing hole, center - .893"
trailing hole, edge - .863"
Leading hole - .924"
Spark plug - .840
So it will fit with NO clearance problems whatsoever.
trailing hole, center - .893"
trailing hole, edge - .863"
Leading hole - .924"
Spark plug - .840
So it will fit with NO clearance problems whatsoever.
#20
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Originally posted by mazdaspeed7
I just measured a 1990 n/a rotor housing I had in the garage and a NGK plug(leading) WITH the cruch washer cut off. Heres what I got:
trailing hole, center - .893"
trailing hole, edge - .863"
Leading hole - .924"
Spark plug - .840
So it will fit with NO clearance problems whatsoever.
I just measured a 1990 n/a rotor housing I had in the garage and a NGK plug(leading) WITH the cruch washer cut off. Heres what I got:
trailing hole, center - .893"
trailing hole, edge - .863"
Leading hole - .924"
Spark plug - .840
So it will fit with NO clearance problems whatsoever.
How did your trailing plugs get nicked then?
#22
mad scientist
Originally posted by Samps
How did your trailing plugs get nicked then?
How did your trailing plugs get nicked then?
Telsa, I havent needed one of those special sockets yet.
#24
mad scientist
Originally posted by Samps
How did your trailing plugs get nicked then?
How did your trailing plugs get nicked then?
Good idea, ka8legend. That might be worth a try.
And this thread is back from the dead, seems to have been happening to a lot of old n/a threads lately
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