Quick question. Does a 97 LC take platinum or non-platinum plugs?
Spark Plugs-Platinum or not? (1 Viewer)
- Thread starter landcruiserguyaz
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As an FYI, I have heard that the platinum tips on platinum plugs can "pop off" and cause harm to the valves, pistons, etc. Not sure if it is some urban legend or not. I would call CruiserDan and get the stock plugs which I think are not platinum. HTH.
Stock plugs are not platinum. You can run platinum if you want. The primary advantage is extended replacement intervals.
The interval for standard plugs is 30,000 miles and platinum gets you 60,000 miles. OEM platinum plugs are about 4 times the cost of OEM standard plugs.
I run Platinum plugs that are one step colder because of the blower.
The interval for standard plugs is 30,000 miles and platinum gets you 60,000 miles. OEM platinum plugs are about 4 times the cost of OEM standard plugs.
I run Platinum plugs that are one step colder because of the blower.
JohnnyC
Long ago TLCA# 2231
i only run bosch platinum on my 74...not the crappy +4 type...just the single tip.
never heard of tips coming off? thats new to me...i've been running them on my vehicles for 20 years...no poopy tippies
never heard of tips coming off? thats new to me...i've been running them on my vehicles for 20 years...no poopy tippies
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i only run bosch platinum on my 74...not the crappy +4 type...just the single tip.
never heard of tips coming off? thats new to me...i've been running them on my vehicles for 20 years...no poopy tippies
I have seen a couple of the center electrodes come loose and move out enough to touch the outer electrode, shorting the plug. This was many years ago, when I was changing lots of plugs and only on the very early style Bosch's. My rule of thumb is that Bosch plugs belong in German cars and Toyotas get Denso's.
My rule of thumb is that Bosch plugs belong in German cars and Toyotas get Denso's.
I agree. The funny part, in my Wife's BMW X5, NGK is the Factory Plug.
- Thread starter
- #7
Thank for the info guys. Was pretty sure that was correct, but wanted to make sure. Parts guy at the dealership wasn't 100% sure.
FWIW, I have been to a large spark plug plant in Ohio, and the techs in their lab use Bosch Platinum plugs. They can get their own brand for free, yet they choose Bosch platinum for its long term performance.
The platinum tips don't fall off any more than any other plugs have parts fall off.
For the benefits of Platinum, it's more than worth the risk and slightly higher cost.
Later.
The platinum tips don't fall off any more than any other plugs have parts fall off.
For the benefits of Platinum, it's more than worth the risk and slightly higher cost.
Later.
I run the...
platinum plugs, just for the reason Dan gave. I don't have to change them as often
platinum plugs, just for the reason Dan gave. I don't have to change them as often
Platinum tips (buttons) are known to fall off and cause hot spots in the cylinders 
My 98 Trans Am came with factory installed A/C Delco platinum plugs that were said to last 100,000 miles
After hearing about the tips falling off on other cars, I pulled them at 10,000 miles and found that 6 of them already had missing tips
I now use copper NGK TR55's and replace them every 10,000 miles
If you're not that anal about plug changes and wanna go 50,000 or more, I'd suggest NGK or Denso Iridiums
Rick
My 98 Trans Am came with factory installed A/C Delco platinum plugs that were said to last 100,000 miles
After hearing about the tips falling off on other cars, I pulled them at 10,000 miles and found that 6 of them already had missing tips
I now use copper NGK TR55's and replace them every 10,000 miles
If you're not that anal about plug changes and wanna go 50,000 or more, I'd suggest NGK or Denso Iridiums
Rick
Denso IS NOT Delco......
Denso IS NOT Delco......
no kidding...
Whats a spark plug
Dan, other than the extended interval, would you say that there are any performance improvements with running platinum plugs? Also am I understanding you right that although platinums are not 'stock' for the 80s, there is an OEM platinum option that runs one range cooler???? That would be wonderful; I'd trust OEM platinums but as I made a mention of above, apparently some platinum sparks do pop off and I would want to avoid those brands. I'm currently running the plugs Safari recommends which run one range cooler but are not platinum sparks.
Dan, other than the extended interval, would you say that there are any performance improvements with running platinum plugs? Also am I understanding you right that although platinums are not 'stock' for the 80s, there is an OEM platinum option that runs one range cooler???? That would be wonderful; I'd trust OEM platinums but as I made a mention of above, apparently some platinum sparks do pop off and I would want to avoid those brands. I'm currently running the plugs Safari recommends which run one range cooler but are not platinum sparks.
I don't think that platinum plugs "run" any better, they just last longer.
The Turbo MR2 happens to run a platinum version of the same style plug that also happens to be one step colder than the stock 80 plug.
Another coincidence is the fact that in the factory forced induction engines such as the MR2, Turbo Supra and supercharged Previa, Toyota uses a platinum plug that is one step colder than the naturally aspirated version of that motor.
JohnnyC
Long ago TLCA# 2231
platinum plugs do "run" better...they are less likely to foul out...i was running ngk's and they fouled all the time...switched to platinum plugs and it ran better
an engine with over 300,000 will need a plug to fire in a poor cyl. platinum plugs fire ...ngk foul...
My $.02
an engine with over 300,000 will need a plug to fire in a poor cyl. platinum plugs fire ...ngk foul...
My $.02
sence whenDenso IS NOT Delco......
platinum plugs do "run" better...they are less likely to foul out...i was running ngk's and they fouled all the time...switched to platinum plugs and it ran better
an engine with over 300,000 will need a plug to fire in a poor cyl. platinum plugs fire ...ngk foul...
My $.02
Platnium plugs do not "run" better. In a "properly" running engine with a properly functioning ignition, there will be no performance difference between a platnium or copper based plug. The major difference is that platnium plugs increase their gap slower than copper plugs as they wear, so they last longer.
In your case, you have an engine that has excessive blowby, and you are finding the platnium plug is not fouling as quickly. This is not a properly running engine.
