8V Headbolt Lengths

[hoodygoodwood 70 3 Cars]

I am rebuilding a 1905cc 8v XU9JA at the moment and I have just loosely refitted the head , after some confusion with some Motaquip ( hex headed ) head bolts which were shorter i ordered a set from GSF , they arrived yesterday and are correct length Torx headed items .

The new bolts have a long thread that comes half way up its length and for the bolt above the water pump that usually has the thick and thin spacer I could easily cut 30mm ( or so ) off the end and do away with the thick spacer .

Do Peugeot have 10 bolts the same length and a spacer on one so that they stretch equally when torqued down or was it to simplify the supply of bolts by having them the same ?

Could I cut the one bolt to suit the shorter hole and use just the thin spacers on all 10 .

[Tom Fenton 1,525]

Why make it difficult, refit them as they are with the big spacer on the left rear bolt as looking at the engine in the car.

[pug_ham 240 3 Cars]

IIRC the hex head bolts don't use the spacers like the torx bolts & are a bit shorter side by side (~8mm).

 

They just use ~3mm washers & a 22mm spacer above the water pump looking on service box.

 

g

[welshpug 1,622]

yup, Graham got it.

[Telf 222 2 Cars]

definitely washers I've just stripped an engine with them fitted

[hoodygoodwood 70 3 Cars]

All the head bolts I have used before have been the usual torx head and full length type but the thread length varies considerably between the ones I have seen , also some have had a spiral twist cut into them which must be to aid the stretch while others have a plain section between head and thread . The hex head ones have such a short thread I was worried about it bottoming out in the hole so I ordered the others so I could get the engine back together as I have another one to build and need my engine stand .Have never seen the 3mm spacers before - does anyone have some lying around ?

[pug_ham 240 3 Cars]

You should be able to get some suitable washers from a decent hardware store imo, spec of them from service box is;

 

CYLINDER-HEAD SCREW WASHER

13X24-3

 

g

[Telf 222 2 Cars]

Miles I have a set languishing in my bits bucket from earlier - I'm not sure if I need them or can fit Torx bolts when I rebuild my project engine- if I can use Torx then your welcome to them - I'd have to have a rummage tomorrow but I haven't thrown anything away so there is no reason they should still be in the warzone that is may back garden...

[hoodygoodwood 70 3 Cars]

Thanks Telf , if you do not need them I might be able to make use of the spacers with the hex head bolts on my next 1.9 8v build .How are you getting on with your engine cleanup , I have a bare block on a Black and Decker Workmate in my hallway at home at the moment , it had some corrosion in the water jacket but still useable .

[Telf 222 2 Cars]

Well I think Ive found a block that's OK - posted some pics in the thread - I will have a look for those washers today

[pug_ham 240 3 Cars]

I've got five of the washers you need, don't know if I have the rest of the head bolts (the front five were still in the head because the rocker cover is still fitted) but I'll have a look through the boxes that came with the head.

 

g