Ts1 piston

[Marrsy7]

Putting a new piston in my ts1 (not a rebore) how many miles are recommended for running new piston in ? Regards

[coaster]

Not many really, I'd take it a bit easy for a hundred miles but not too easy, dont be afraid to rev it but dont labour it. Tighten the head down again after 100 miles and you should be good, a few plug chops would be a good idea too

[ULC Soulagent]

As Jeremy Clarkeson says Sum say around a tank of fuel for bedding in rings

[MickYork]

Out of interest, if it doesn't require a re-plate/bore, why are you changing the piston and not just the rings ?

[Marrsy7]

The top off the piston has a dint in it as if it’s ready to hole piston

[gaz_powell]

Make sure you solve the root cause to the detonation issue before you charge ahead with a piston replacement.

[Marrsy7]

Hi thanks for reply’s did you think it could b a timing prob ?( it has variotronic fitted )

[MickYork]

jetting or an air leak would be other possibilities. Worth doing a leak-down test when you put it back together......followed by plug chops.

[Fast n Furious]

Altitude above sea level is not something that most of us need to consider really except for the few that live at 600-1000ft above sea level. Up there has upto 1% less oxygen available for combustion.
An engine perfectly tuned for this altitude will run weaker when thrashed on a run out to the coast, potentially leading to piston melts, seizures, recovery truck, embarrassment and depression .
Always best to set them up on the rich side if you live up where the air is rarefied.

[rossclark]

Interesting point where I live is about 700ft above sea level and with my RT could never get it off the rich side.

[Knowledge]

Not even when the barometric pressure was high?

I doubt if 700ft above sea level makes much difference. You will get more effect with cold weather on a sunny winter's day when the air is denser.

I'd try and prove this, but we don't have too many mountains in Suffolk (but we do have a ski-slope)

[rossclark]

Maybe, I could never get it off the rich side even with what I thought seems quite lean jetting Av264/X7 and mains as low as 110 on a PHBH 30