20xe head bolts

[pie]

im i right thinkin theres 2 types?

mine is a XEJ enigne


thanks
:thumb:

[Old man Jimbo]

Yeah there is early and late.

TBH I've never had them side by side to check differences and I'd be interested for answers myself on this one....

[mowgli]

early M11 x 110mm x 1.25mm

late M11 x 105 x 1.25mm

measured from under the head of the bolt.

[pie]

hmm so early ones are longer

think i need washers to as when i bought new bolts for sbd i didnt have none :( & my old ones have gon walkies lol

[paul080803]

Early male head and late are female head

[pie]

late....top
early...bottom

http://product-images.qedmotorsport.co.uk/vauxhall/c20xe/cylinder-head-components/head-bolts.jpg

[Old man Jimbo]

It's like being at school! Are they interchangeable?

Are the later ones shorter for a reason?

I just use the stud conversion things..

[swedge]

im guessing thier shorter for a reason, different length hole in the block maybe?

[Iain]

I thought the early type had a washer too, so that pic is slightly misleading.