Tazrolla Posted September 10, 2010 Report Share Posted September 10, 2010 who was the pot smoking japman who decide to put 16point bolts on a 4age head... and then make it even harder to get out by puting them in such a narrow gap... :jamie: now i gotta go out and buy another 12mil thin walled socket just so i can get this bloody head off ;) anyway enough QQ'in any1 know the 3 stages of tightning up the head all i can find is this and it dosnt seem that good to me Quote Link to comment Share on other sites More sharing options...
towe001 Posted September 10, 2010 Report Share Posted September 10, 2010 Hehe My guess is that the 16 point bolts were done so that mechanics would stop rounding the heads off. You'll need a deep socket for the job - unless you've already figured it out. I thought the same thing when i came across the head tightening sequence 30Nm, 90deg, 90deg. Pain in the arse idea Came across a "three stage" in one of the books i have - i think. When i can i'll have a hunt for it Quote Link to comment Share on other sites More sharing options...
Des Posted September 10, 2010 Report Share Posted September 10, 2010 The right tools for the right job make life a breeze. Quote Link to comment Share on other sites More sharing options...
Tazrolla Posted September 11, 2010 Author Report Share Posted September 11, 2010 just didnt some more research on it last nite while rc was down i need to go out and get myself a 10m 3/8 longreach socket :jamie: any1 got 1 ta spare they wanna post me ;) oh and thinking bout it i think there 12 point not 16 like i said b4.. but either way the normal 6(hex)sockets are usless on it Quote Link to comment Share on other sites More sharing options...
towe001 Posted September 11, 2010 Report Share Posted September 11, 2010 Should have realized that one myself 12point not 16 i don't know why i put 16. I have one but i still use it from time to time Three passes up to 55-64Nm in the Max Ellery book Whereas in the Sept 1989 4a-fe,4a-ge toyota blue book its - 29Nm, 90deg, 90deg with the dot facing to the rear. Whereas again Aug 1983 2a, 3a, 3a-c, 4a-c, 4a-ge toyota blue book its three stages up to 55-64Nm Quote Link to comment Share on other sites More sharing options...
Tazrolla Posted September 11, 2010 Author Report Share Posted September 11, 2010 hmmm so 30nm-55nm-64nm or should i just stick with the old 30nm +90° +90° going to be using the old head bolts this time round so only got 1 chance of getting it right( last thing i wanna do is snap the end of the bolt off in the block :jamie: plan is just to do a temp fix for now as the old cash flow is a bit on the light side and in 6 12 months rip out the engine again and do a full rebuild once the cash flow is a bit better ;) Quote Link to comment Share on other sites More sharing options...
towe001 Posted September 11, 2010 Report Share Posted September 11, 2010 The head bolts are a "torque to yield" or what ever its called. Basically when you do the first run at the 30Nm you torque them down then when the rest of the runs are done at 90deg the bolts are getting stretched. Hence the dot is facing the back of the motor. Their meant to be a single shot item. Quote Link to comment Share on other sites More sharing options...
ke70dave Posted September 11, 2010 Report Share Posted September 11, 2010 yeah you should get new head bolts. and one of these suckers. Quote Link to comment Share on other sites More sharing options...
beerhead Posted September 11, 2010 Report Share Posted September 11, 2010 Haha, I should remember to get that off you sometime, thanks for reminding me where mine went ;) Quote Link to comment Share on other sites More sharing options...
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