Stroker spec thread

[diesel des]

Old thread, but just to inform, I will use normal M12x160 12.9 grade bolts as head bolts, they are something like 2e/pcs.

One question about stroker builds, have you guys who build strokers ever needed to grind of material from the bottom of the bore so the rods have enough room to turn over with the crank? Seems that in my build the rods made contact with the bottom bore step, so I need to grind of some material there.

Yes that's normal. Also I use cap head head bolts too.

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[sailaz]

Old thread, but just to inform, I will use normal M12x160 12.9 grade bolts as head bolts, they are something like 2e/pcs.

.... and manufacturer of these bolts is ?

[diesel des]

They are just normal cap head bolts 12.9 grade you can get from most bolt suppliers.

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[sailaz]

..... hmmmmm, I'm about to start to build second stroker and was thinking about this alternative with head bolts instead of ARP studs

http://www.fcp-engineering.com/lang-en/arp-bolts-studs/602-audi-20v-5-cylinder-head-studs.html

but still in a big big doubt ...

Thuppu, are you going to use girdle on your stroker ?

[Thuppu]

Yes, just like des told, many different suppliers of these bolts. They should be just ok, as M12 12.9 can tolerate 154Nm torque, more than enough. BTW des, what torque do you use in your build? I was thinking of 110-115Nm.

Sailaz, yes I'm going to use girdle. Propably won't need it and quite hard to shimm all bearing cap spacers but I already have everything waiting to be fitted.

[sailaz]

Sailaz, yes I'm going to use girdle. Probably won't need it and quite hard to shim all bearing cap spacers but I already have everything waiting to be fitted.

Then 'natural' question : have you made your choice for main (girdle) studs ?

[Thuppu]

Yes. M10x110 12.9 bulk bolts.

[sailaz]

that's going to be very budget budget build
P.S> just in case, old thread aboud girdle studs:

http://www.s2forum.com/forum/showthread.php?t=63714&highlight=Ford+head