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#136 (permalink) |
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GTR Register Member
Join Date: Nov 2005
Location: Seoul Korea
Posts: 6,401
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photos documenting much of the rest of the build exist, but have yet to be mailed to me. The engine is again in bits. I think the bores are now broken in - they don't feel rough but you can still see the crosshatch pattern.
The piston pin rattle boils down to very small clearance variations. HKS specs are for the pin to be 20.998~21.010mm. The ones we used were Nissan OEM pins cut down to 60mm, and were 20.990mm. It may seem like only a 0.008mm difference, but it's better to think of the pins as being 0.018mm too small. Doesn't make a peep when cold, but once the metals start expanding, the #6 piston starts making a single ticking sound (not the double-click of a seriously loose wrist pin rattling at TDC). Three of the six HKS pins seem to have bent under the power of my engine, from det, or both. The bend is VERY slight, but causes slight stickiness in the small end. Ross Racing wrist pins have been ordered and should arrive shortly. A normal wrist pin costs $10~15, these cost a whopping $40 each. Presumably, these are incredibly strong plus shave nearly 40 grams off of the OEM weight. The only other sorting that needs to be done is to change all the coolant hoses which are beginning to rot out, and simplify the power steering system. The other bits are just cleaning up and binning unneeded things like hard vacuum lines I'm no longer using. This had better work; if it doesn't, I'm seriously thinking of an Evo X. They're being sold in Korea now, starting from last week, full warranty. I'd just have to make sure I never tuned the damned thing... But can I live with being slower?? |
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