|
|
Post by carpaltunnel on Apr 2, 2014 16:05:19 GMT -6
So I'm preparing to do perform a valve adjusty and checked my spark plugs. Turns out the right "gasket" is cracked and missing (who knows where it is!) and see if you can guess which spark plug was screwed in there! Any thoughts on what I can do to fix this?   |
|
|
|
Post by carpaltunnel on May 18, 2014 16:02:55 GMT -6
No one has any input on this? Could it be ruining my compression? If so it might explain my lack of power what with all the changes I've been making to the carbs. Any ideas on how to seal this?
|
|
|
|
Post by Blaine on May 18, 2014 18:35:01 GMT -6
No one has any input on this? Could it be ruining my compression? If so it might explain my lack of power what with all the changes I've been making to the carbs. Any ideas on how to seal this? I can't see it having much effect as long as the plug stays tight & doesn't vibrate loose.   |
|
|
|
Post by mikestorm78 on May 18, 2014 18:55:53 GMT -6
I can easily see you've got two different size threads of plugs, but I'm honestly not sure what you're asking...
If the larger one is the wrong size and it was cross-threaded in or wasn't able to be fully sunk, then yes, your spark is not in the optimal location and could have an impact on performance.
If the smaller one is the wrong size, then it could be cross-threaded or not be providing an adequate seal which could let in air and could affect performance.
If one of your plugs are cross-threaded, then you may run into a bigger problem.
Sent from my One using Tapatalk
|
|
|
|
Post by Blaine on May 18, 2014 21:56:14 GMT -6
Maybe it's my old eyes,but both plugs look the same to me.What number is on the plugs?? |
|
|
|
Post by carpaltunnel on May 22, 2014 17:32:38 GMT -6
Okay, both plugs are the same size. According to the manual it should be a D9EA and that's what I bought. But Bikebandit.com has stock plugs labeled as D8EA. In any case I know they are the same size. They thread nicely and I'm able to finger tighten/loosen all the way in and out before tightening with a ratchet. I need to get a torque wrench.
My original question is that there appears to be a broken section of the plug mount (see photo above, that white ring doesn't go all the way around) and I thought perhaps I was losing compression through there. However it appears to have the same "defect" on the other cylinder so perhaps this is intended. Would someone please confirm on their plug mounts if this is intentional? I'd greatly appreciate it.
|
|
|
|
Post by zekkfett on May 22, 2014 20:10:42 GMT -6
The "white" you see is most likely dried coolant. Might have gotten there from a valve adjustment, or even a leaking hose. The only part of the crush washer on a spark plug thay actually seals, is the very inside ring near the threads.
Put it all back together, start it, and use a spray bottle of soapy water, and see if you get bubbles by the spark plugs. If you do, then there IS a compression leak.
D8EA is a correct plug, just simply one temperature range cooler than the stock plugs. They are perfectly fine, and actually better on a leaner engine like ours than a hotter plug.
Sent from my Samsung Galaxy S3 using the ProBoards Mobile App
|
|
|
|
Post by carpaltunnel on May 22, 2014 20:46:07 GMT -6
The "white" you see is most likely dried coolant. Might have gotten there from a valve adjustment, or even a leaking hose. The only part of the crush washer on a spark plug thay actually seals, is the very inside ring near the threads. Put it all back together, start it, and use a spray bottle of soapy water, and see if you get bubbles by the spark plugs. If you do, then there IS a compression leak. D8EA is a correct plug, just simply one temperature range cooler than the stock plugs. They are perfectly fine, and actually better on a leaner engine like ours than a hotter plug. Sent from my Samsung Galaxy S3 using the ProBoards Mobile App What I understood is the lower the number with NGK is the hotter the plug. So if I have 9's currently and wanted to get cooler I'd go for 10's. Here is my source: www.sparkplugs.com/learning-center/article/116/how-do-i-find-a-colder-or-hotter-plugAnd since I'm running pods and am likely getting a lean mixture then I'll need to go cooler with my plugs so as to help the compression. www.carcraft.com/techarticles/spark_plugs_tips/ |
|
|
|
Post by zekkfett on May 23, 2014 1:04:01 GMT -6
You would be correct, I was in a hurry on break at work typing that. My apologies.  |
|
|
|
Post by carpaltunnel on May 23, 2014 7:17:19 GMT -6
You would be correct, I was in a hurry on break at work typing that. My apologies. That's fine, I just wanted to make sure my information is correct wherever it comes from. I'd still love a photo of someone's spark plug socket so to understand more about if/how much mine may be damaged. I'll be getting cooler plugs this evening as well. EDIT - Also, I can't seem to find colder plugs than D9EAs, they don't have 10's. Anyone recommend another plug that would fit with less heat than an D8EA or a 9? EDIT 2 - According to NGK's website, and here's where some of my confusion comes from, is that most years of 454's get the OEM D9EA plugs while specifically the 1987 gets a DR8EA. So perhaps I can try a DR9EA, but I wish I could still find something cooler considering I'm currently running a 9 anyway. Hmm... |
|
|
|
Post by eaglerider on May 23, 2014 14:58:07 GMT -6
these engines are funny about spark plugs......use the 8s or 9s, and use NGKs.
|
|
