1.6td head bolt question

Post by **camper** » 06 Nov 2006, 19:32

Hopefully Simon Baxter can answer this .Can you tell me the torque for the streech bolts .I was reading a 1.9 diesel peter russek manual that said 29 pounds for each .Is this the same for a 1.6td?

Post by **philippacman** » 06 Nov 2006, 19:39

i know this sounds daft but 99% of vw head bolt torques are
40nm
60nm
+90 degrees
+90 degrees
petrol or diesel
( nm =newton meters)
hope this helps

Post by **camper** » 06 Nov 2006, 19:48

No it does not sound daft.60nm can you convert this pounds

Post by **philippacman** » 06 Nov 2006, 19:50

will have a look in my book tomoz for you,just came in and locked the garage,missus just said dont you mean the scrap yard (cheeky cow)

Post by **Westy.Club.Joker** » 06 Nov 2006, 20:22

1) 30 ft/lb
2) 44 ft/lb
3) 55 ft/lb
4) then a further 180 degrees each bolt ( 2 x 90 degree turns each is OK)
5) run engine until the fan has cut in
6) stop engine, then tighten another 90 degrees
7) after 1000 miles, tighten them another 90 degrees (hot or cold)

Use new bolts as well.

Method taken from the Bentley manual, I wonder if anyone does this sequence ?

Post by **philippacman** » 06 Nov 2006, 20:35

i dont do the retorque after engine run or 1000 miles, i have had bolts sheer and once i had the threds pullout of a block, NEVER had any probs with 40-60 nm +90+90, just my experience

always and with out fail use new bolts

[/quote]

Post by **Simon Baxter** » 06 Nov 2006, 20:54

Westy.Club.Joker wrote:1) 30 ft/lb
2) 44 ft/lb
3) 55 ft/lb
4) then a further 180 degrees each bolt ( 2 x 90 degree turns each is OK)
5) run engine until the fan has cut in
6) stop engine, then tighten another 90 degrees
7) after 1000 miles, tighten them another 90 degrees (hot or cold)

Use new bolts as well.

Method taken from the Bentley manual, I wonder if anyone does this sequence ?

I do them that way, 40Nm, 60Nm, 90*, 90* run till fan cuts in, another 90* then run for 750-1000 miles then another 90*.

Not had a problem, always use new bolts, clean the threaded holes out with solvent and compressed air.

You have to do the final 2 stretches otherwise you can get head chatter.

Post by **camper** » 10 Nov 2006, 20:25

Had the head skimmed and it will be refit it this weekend.Simon can you explain head chatter.Thanks

Post by **Simon Baxter** » 10 Nov 2006, 20:42

Due to the high compression ratio of a Diesel engine (around 23 to 1 on a VW IDI) then if the head is not tight enough it can be lifted, usually putting oil into the water and giving head gasket problem type symptoms. This is caused by either not replacing the head bolts with new items or not carrying out the full tightening preocedure.

Post by **camper** » 11 Nov 2006, 00:25

Thanks for the reply .I will follow the procedure for the head bolt tighting with care.