Drive side plate

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onefortheroad
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What's the difference between the non grooved drive side oil plate

https://www.ebay.co.uk/itm/121467221573

And the grooved one

https://www.ebay.co.uk/itm/111259770654

And which one do I need for an Li3 casing with a gp crank?

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Grumpy225
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Technically speaking you will gain a hair more case volume by using the grooved one. In reality though I doubt it makes any difference at all. If it helps, the solid type is a later more modern design (dl/GP style).

I tend to use the grooved Italian ones in my builds since the alloy solid type always seemed to be warped.
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onefortheroad
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So any will fit?

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rosscla
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Broadly, but check the plate is centred - try it in all four positions.
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
Scooterdude
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And make sure your Helite seal isn't to thick that it forces the drive plate against the side of the crank, I've recently had a couple from Beedspeed that apart from being to thick were cut on the p155. I now use two of the thin ones from Harry Barlow paired up...spot on..
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