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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. | These photos from another site by a user called Joey shows it all.
The stock conrods are risky above 6 psi and the pistons just fall apart unless forged.
(piston crack from edge.JPG)
(piston crack.JPG)
(con rod failed.JPG)
(damaged bottom end.JPG)
(damaged oil pan.JPG)
Attachments ---------------- piston crack from edge.JPG (99KB - 742 downloads) piston crack.JPG (109KB - 762 downloads) con rod failed.JPG (118KB - 680 downloads) damaged bottom end.JPG (116KB - 768 downloads) damaged oil pan.JPG (89KB - 672 downloads)
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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. | The main weakness in the 6G75 is bolt stretch on the center 8 main bearing bolts.
They have been shown to stretch by several millimetres in worst cases.
You MUST replace the bolts when replacing bearings. |
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Frequent flyer Gold
Posts: 421
Location: Brisbane,qld | Ill be doing that on my 6G75 build,cheers |
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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. | The bolts used in my build require a professional install, they are 1.5mm greater diameter so need to be drilled and tapped.
Engine has to be on the bench.
only do the inner 8 bolts as there isn't enough material in the block to do the outside 8 bolts. |
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Frequent flyer Gold
Posts: 421
Location: Brisbane,qld | Thats in your forged engine, yeah?, so are the ARP anygood then? |
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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. | Here are the locations of the 8 bolts.
(6G75 bolts.JPG)
Attachments ---------------- 6G75 bolts.JPG (206KB - 1652 downloads)
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