SuperDave's Sled

[Kenshin X]

so dave? when can we get bullet trains like they do in japan?

[SuperDave]

Yearly update.

Snapped a valve.

Bent the valve and cracked the valve guide.

Finished rebuilding it the other day and now it has flat faced valves and stiffer springs. The exhaust valve seats were pitted which was giving low 180PSI readings, and after grinding the seats it is back up to 200-205PSI. 180PSI is still well within the Toyota Sepcs too. MWR claim the flat faced valves add about 0.3:1 to the compression ratio, which should be about 5PSI by my dodgy maths.

[trentmeyer23]

That's not gone well...Seen that before sadly. Replace all the guides as well?

[SuperDave]

Only dropped the 1 valve, and yes the guide was replaced as it was cracked.