BoOsTeD_eK

ALright so I do an ls/vtec, and the first time the gasket blows...take out the bolts to find this..


Got a new block...put it in 2 hours later gasket goes again...and I pull it out and find about 3 bolts with the same ****, pieces of the block on the bolt. This is RIDICULOUS! It was torqued down in sequence as the Helms say to 63ft lbs...what could be causing this...does anyone know.???

Ri5e

Use ARP Studs. Use Moly Lube on the end of the thread that goes into the block.

I've seen a lot of heads lift up during boost from reusing old head bolts which causes gaskets to blow out.


[Modified by 4 Stroke, 10:09 PM 10/13/2002]

Flamenco-T

did you re-use the head bolt ?

head bolts streches after they're taken out the first time....use an ARP studs

don't re-use a used head bolts...

LsTurbo91

Hmm I hope thats not a LS head bolt. It would be too long/short.

EDIT: This happened to me with d16y7/si head. I used shorter bolts (If I remember correctly) and it stripped like that.

BoOsTeD_eK

no they were b16a head bolts...so how would head bolt stretch cause a stripped block?

Flamenco-T

oooh, I have no idea why the botls tripped the block, but as a suggestion, I wouldn;t use a usedd bolts since they streched after being taken out the first time...

did you use any oil or moly lube on the threaded part ?

BoOsTeD_eK

yes I dipped each bolt in motor oil prior to torquing it down

Too_Smooth

Don't use B16 head bolts...they seem to be too short from my experience. Get GSR head bolts and you shouldn't strip the threads anymore.

HybridKOOP

yup.. thats the problem, bolts are too short..

wHOAlly

ls/b16 head bolts/studs are the same length...meaning TOO SHORT, not enough is threading into the block causing it to strip, use B18C bolts or studs....

dustin

Supposed to use GSR head bolts

BoOsTeD_eK

I have built 3 or 4 previous ls/vtec using b16 bolts. The oldest one being a year and a half old...BEAT on everyday and somethign like this has never happend.

Ri5e

Were these LS blocks previously "Beaten" on? I have a friend with a GSR turbo that beat his motor a lot. Blew a headgasket and then when he tried to put in new studs they would not thread in straight. He had it retapped and still the same problem. It would go in then it would just strip. The block became a peice of junk because it went through a lot of stress from all the hard shifting and I guess that weakened the area around the threads in the block.

ion_four

I' have to second using ARP headSTUDS. You get alot more contact area with a stud, vs. a bolt. reusing a stud is also MUCH better than reusing a bolt, but still not too hot.

speedworks

been there, done that. need to use gsr bolts

BROOD

Yep, GSR or ITR headbolts. The B16 headbolts are too short to get proper thread engaugement.