Boring bluetop rods to take 20mm gudgeon

[Volodkovich]

I've heard a few people talk about this, and would quite like to do it to the 4age i am building up soon.

So basically i can run the lighter crank/rods with the later pistons.

Are the bluetop rods still strong after being bored to take the 20mm gudgeon pin? It will be a mild tune n/a 16v, in a road going club car. So will get thrashed but will be looked after.

Would like to hear peoples opinion on this.

Cheers

[Volodkovich]

Anyone?

[thaphatty]

Id be very interested in this also, simply for the fitting of later model pistons.

I've killed a few 4ags, and its never been because the gudgeon hole wasnt strong enough, always been oil starvation.

[Mr Revhead]

i know someone doing this
and iv heard of it being done
been a while since iv looked at a blue top rod but i seem to recall theres no problem at all

[Distrb]

i know someone doing this
and iv heard of it being done
been a while since iv looked at a blue top rod but i seem to recall theres no problem at all

According to said person, the just machine out the bush, and run with none. Doesnt alter the strength of the rod.

[levinguy]

has been done on the block i just brought,
the guy who built the block seemed to think it would be fine

[Volodkovich]

So i assume you make the gudgeon press fit into the rod if you dont run a bush in the little end?
This way the piston would rotate on the gudgeon rather than the gudgeon rotating in the rod.