ILOVEMYAP2

hey every one i really need some feed back on this

i went to pull out # 1cyl coil pack out and the plug came with it
and #2cyl is stuck in the head and #3 was fine and #4 was loose

would helicoil on 22psi would be worth doing or start fresh on a new head

would helicoil even hold up

MaseEngineering

it should be fine, ive tuned a few cars w/ timesert inserts. one being a 900 whp supra.... didnt seem to be affected....

ILOVEMYAP2

really ... thats good to know i was a lil worry about running a helicoil on that much boost

Artisan7471

Helicoil actually increases thread strength in aluminum.

chris_barry

Use a full collar insert like a Timesert.

Dont use the wound spring like inserts that most people call a helicoil to rethread a spark plug hole.

http://www.timesert.com/


Oh, and if you do this with the head on, fill the cylinder up with shaving cream on the compression stroke. Once you have cut the new thread for the insert, turn the engine over and the swarf gets carried out on the worm of shaving cream that gets extruded.

AusS2000

And get a video. Never seen an S2000 with worms before.

Spoolin

Make sure you also use some anti-seize lube on the threads of the spark plugs when you put them back in. The reason why the spark plugs got stuck in the head is probably from torquing them down with no anti-seize lube on the threads. SS threads going into an aluminum thread can gaul up and get stuck without out anti-seize lube.

ILOVEMYAP2

yea that would be a good idea to start doing now never had that problem untill now

ILOVEMYAP2

i went ahead and took my head to the machine shop going to have time sert in all 4 because the plugs get lose ?

Spoolin

Make sure you dont over tq the plugs either. I tq mine to 19 ft lbs or about 225 in lbs.