[Sa] 19X8.5 Speedy Cheetah
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You're already well into "gearbox is a consumable" territory there. A billet plate will either make it (effectively) 1% stronbger or make it last one more pass. At some point you'll probably tear 3rd gear into small chunks and regret all the life decisions that came before it. -
..and forum.r31skylineclub has been down all week....anyone know why? -
I thought it could be an issue because the standard plate was flexing when stressed. Maybe the original gear set will hold a bit better without flex? Last time on the dyno it made around 670nm at the hubs. Now it have bigger turbo and better intake but have not been on a dyno yet. The car is being used from family trips to drag race events. So the shifts can be a little violent. It is grinding if I shift to fast so was thinking I should overhaul it soon. -
By joshuaho96 · Posted
From the factory on RB26s there's a fitting on the intake manifold collector/"plenum" that provides pre-throttle boost signal. That's how they did it back in the day, I figure it's fine to replicate it. -
I would be surprised if that wasn't the issue. It's probably telling you, that even if you remove the plastic liner, you may have some other clearance issues that may occur too in some scenarios. IE, tyre to guard. It looks like someone has already rolled the lip, but you may still have issues in the future IE, turning and hitting a bump etc. The fact it changes how bad it makes the noise when you are going backward vs forward is highly indicative that it's the tyre rubbing. They do make a terrible sound, even if you're only pushing a project car that has a liner hanging down on a tyre! Has the car been lowered? If it has been, what is the measurement from the centre of the wheel hub to the lip of the guard straight up?
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