Thread: Spark Plug tips gone!!! UPDATE 2/6/2011

glanzergtx usually knows what he is up to with tuning. i would check with him to see what he was doing.

also, dont assume bottom end damage yet. do a compression check, get a boroscope to check out the pistons, etc. however, with that much plug damage its almost certain youll need to replace some bottom end parts if not the whole bottom end.

i have no clue.

Auto Parts store or online.

The tune is pretty close now. Before i only pissed with the fueling some and got the timing curve figured out. The kr was at 7-8 orginally and i got it to 4 BUT with a L26 and genV you arent gonna get the kr any lower without having some sort of exhaust mods. Hell ported manifolds with a 3inch DP and e85 will still be better than what you are at now.

EDIT,

If his bottem end was SHOT, when im scanning wouldnt i see a misfire once in awhile from either cruising to WOT?

I did not see any misfires at all during the scan last night.

Originally Posted by glanzergtx

The kr was at 7-8 orginally and i got it to 4 BUT...

4 degrees of knock on a high compression block on a constant basis is a very bad thing, even on the stock pulley.

i dont know if the bottom end is gone. i can only assume the only other possibility is raised compression chamber temps. like i said above from running low timing.

Meh...I had a chipped piston...sh1t, half the skirt was gone...once I changed the plug out of that cylinder...it didn't misfire evah...until it started knocking...literally. But first things first...before you even buy a motor...buy headers...they are $200 brand new off of EBay from Speed Daddy...you probably would have been knock free if he had you down at 4* of knock with headers on that car...also...what was the WOT timing set at? Anything less than stock isn't good for the car...

Originally Posted by miker56

ive looked for SD headers on ebay cant find any, and id have to ask glanzergtx

I was just hoping he would see it since he already posted in here and answer it...btw...here are the headers I recommend.

1997 1998 1999 2000 GRAND PRIX GTP V6 3.8L 6pcs HEADERS - eBay (item 170469647555 end time Jan-01-11 16:40:51 PST)

Originally Posted by bluegtp91

.what was the WOT timing set at? Anything less than stock isn't good for the car...

The WOT timing is stock and obviously it gets retarded some with the KR. I will have to look at the scan when i get home.

with 4* of knock i bet its running under 10* WOT, which makes for some massive combustion temps.

Originally Posted by miker56

So what would we do to fix that, dave might have the answer but i need to understand as well

Get rid of the KR. By adding supporting mods such as headers, rockers, etc

good choice.

no, theyll be fine so long as you take your time and make sure they seal.

Originally Posted by Bio248

no, theyll be fine so long as you take your time and make sure they seal.

High temp copper RTV will be ur friend and good band clamps that you can trq down tight.