Building a vhpd

The Oily Bits
1

Many years ago I did an inspection of my spare VHPD engine and it all looked good. I’ve got a bit more time in semi retirement so I’m planning a rebuild for fun, education and to stop annoying my wife in the house. I started by opening my box of VHPD spares which came from a 310r owner. I have a full set of forged pistons, rods etc. I notice some writing and grind marks, they all weigh within 2 grams of each other. First question experts, were they balanced as std or have these been worked on? 872 grams ± 2 grams is pretty tight! (Looked online, that’s how they should be, better than 0.25pc!).

I’ve added some piccies of my spare piston set, pistons look forged to me and con rods are correct.

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IMG_6058
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IMG_6059
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IMG_6060
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2 Likes
2

I’m on hols atm but plan on doing a bit more in my return, I need to change a liner as one has a spot of corrosion. Probably fine but I have a new one.

3

Can’t offer you any advice, as don’t know what I’m talking about. I’ve take the easy route and got mine booked mine in for a rebuild. Following your progress with interest…. :+1:

4

Before changing the liner, given that the K-series is known for liner height/retention issues, it might be worth investigating whether light re-honing would be effective to remove any corrosion. Although the engine isn’t generally one that honing is advised, it may be the less problematic of the two options?