20xe ARP head bolts?

[pie]

can the ARP head bolt kit be fitted to all xe's?

SBD say only to fit to the early xe's?

why do you get long & short head bolts as standard??

early = long
late = short?

any reason for this?

:thumb:

[Timmy]

You must counter sink the rod ends as there is a shanfure on the arp bolts
how many in a kit ? Crank and rob bolts may be diffrant lengths

[pie]

neither lol

head bolts im on about dude :)

[philip]

Iirc im sure heads where washers sit are a different height so could be because of that and not have the clamping force needed.

[Timmy]

Why run arp head bolts ?

[Pistol Pete]

I think he means stud kits?? As they run bolts as standard.

[meritlover]

any reason for this?




good question, have you had any head gasket failures relating to OE bolt stretch?

[pie]

^^ no

but in middle of building engine up ML

[garyc]

They will be head stud and nuts not bolts. You are meant to be able to get better clamping force with them compared to std head bolts.

[pie]

sorry nuts my fault

[lee303]

the late heads require a 5mm spacer to be fitted under the normal washer as the head is slimmer, meaning the nut would bottom out on the thread before full torque is achieved

[meritlover]

out of curiosity, what is the torque figure for the ARP bolts vs the OE bolts?

[lee303]

well stock bolts are usually done with angles after an initial 18 lb/ft but can also be done in stages up to 75 lb/ft if using a cometic gasket, whereas the head studs will go up to 80 lb/ft, but the torque will be more accurately applied