I tried searching for this specific question, and didn't quite get what I need. I did find here on yotatech that my 22RE is "supposed to" have 13/16" plugs.

Just picked up a great '91 2WD pickup to be my daily driver. I've been going through it fixing up what needs fixing, and one of the things on my list is plugs.

I just mail-ordered a nice set of Denso iridium plugs. The site I ordered from showed me a list of plugs compatible with my engine and I ordered these. I see that a 16mm socket will fit on my new plugs (of course a 16mm is just a hair bigger than a 5/8", so should be safe enough to use, eh?). I go out to the truck, drop the socket over the plug installed... not big enough.

So I jump on the ol' interweb and find a reference here on yotatech (https://www.yotatech.com/forums/f116...e-22re-156356/) that tells me that the 22R-E takes a 13/16 and the 3.0 V6 from this generation (3VZ-E, right?) takes the 5/8.

Here's the question: Is there any harm in me installing a 5/8" plug in the 22R-E?

 

as long as it fits, is gapped right, has the right temperature range, and you can get a wrench to it, i don't see why not

 

Just make sure the end that screws into the cylinder head isn't too long, otherwise the pistons could make contact with the plug ends. They'd probably have to be pretty long, but it is a possibility.

 

forgot about that. very important

 

Good check. I'll confirm that before I put one in.

I started searching Google on "Heat Range Toyota 22-RE" and found a reference here on Yotatech to this page:

http://www.globaldenso.com/cgi-bin/g...ame=&cc=&FF=50

Looks like Denso recommends the Iridium Power IW16 for the 4cyl and IK16 for the V6 '91 pickups. The ones I have here are IK16. I'm just going to assume that the IW is the 13/16 version of the same plug. Anybody out there using this plug in a stock 22-RE (either the 5/8 or 13/16 version)? I already have them, and I'd rather not hassle with exchanging them for the IW version. I'll just hold on to the old ones, and put them back if there's any problem like the pinging I hear you'll get with too hot a plug.

I'll report back--after I pick up a 13/16 spark plug socket that I will probably never need for anything else.

Thanks all.

 

OEM Denso spark plugs for a couple bucks each at the dealer. All that other crap is shooting hot water up a frogs butt.

:wabbit2:

 

You may have mail ordered the wrong size:
http://www.globaldenso.com/en/produc...pec/index.html
http://www.globaldenso.com/en/produc...nge/index.html



Recommend sending those back and getting the right ones. As mentioned, probably nothing will outperform the plugs engineered for that motor, the Denso W16EXR-U.

 

I used to run an NGK iridium thingy, but there's no difference at all with the stock ones that are like $1.40.

 

what other stuff (coil, wires, etc.) dose anyone recommend (performance-wise)?

 

I tried fancy wires and it ran worse. I was so glad to ditch them and go back to the dealer set - Yazaki makes them - at least the ones for my veezy. My truck runs best with all oem ignition parts and sensors.

 

I'm sure you're right about that. I'm a typical goofball non-auto mechanic ordering stuff from mail order without much of a clue. But in this case the frog seems to be OK with the hot water enema.

The truck's running really nice with the overly fancy plugs. I pulled a set of OEM Denso's out that were as worked over as any used plugs I've seen. It's running really well, but a new set of Champions would have been enough of an improvement over the set I pulled to make it run better.

Thanks for the input. I'm rolling down the road in a warm-butted frog.

 

Is a warm-butted frog kind of like a polished turd?

 

hahah, IDK about that but My 22r ran like one when I tried using the E3 plugs. Mine's been happy with NGK V-powers.

 

NGK BPR5EY

maybe denso but ngk's are more available to me

 

You guys want to pay high dollar for warm butt frog parts be my guest. OEM Denso are all you need.

:wabbit2:

 

Yep those E3 things are a joke, in my experience if the engine didn't come with platinum plugs, then don't put em in.

 

Several people here had no problems with them, which is why I went ahead and tried them, but all I think were 22RE's. Only thing I can think of is the E3's run too hot or too cold for a carb motor. Were fouling out on me big time.

 

ND W16EXR-U
NGK BPR5EY

there's no point in putting in expensive marginally "better" plugs in an old 2.4L 4cyl with 2 valves/hole, especially if you're following proper maintenance intervals

 

Shiniest one you ever saw.

Tom P.

 

would a colder plug help with detonation?