crow

£8.29 these days! Still cheaper than a head gasket though. The newer version is over moulded onto a metal piece, doubt theres anything generic like that

Hi chaps The o-rings that go around 6 of the head studs between barrel and head - anyone know if 1127 seals will work with a 1052 barrel? My barrel is bored out to 78mm (1109cc), so the 1127 head gasket fits otherwise but won't go over the o-ring seals. Cheaper and quicker to get the later model seals rather than a specific big bore head gasket, I just don't know if they will seal, e.g. if the head stud holes are bigger on the 1052? Cheers!

SV1000 are 737mm (top of stanchion to spindle axis), 46mm diameter

I measured squish clearance with the head gasket in & torqued down to spec. It was difficult to measure deck height accurately, so found it by subtracting nominal gasket thickness (0.03") from measured squish clearance. Gasket diameter is only 0.2mm oversized to the bore, so the split between gasket height and deck height makes naff all difference to the CR result.

Morning all I've just installed a Wiseco 1109 kit, and my CR measurements/calcs are yielding some unexpected results. Overall compression ratio is coming out at 11:1, according to Wiseco it should be 12:1. Squish clearance (measured directly using a blob of solder) is 1.56mm. Is it usual run without the base gasket to achieve the CR quoted for the pistons? Assuming the base gasket to be ~0.5mm, removing this gets me pretty close to 12:1 and 1mm squish, which I believe is about the right place to be. Must be more on a standard engine though? If anyone has some numbers from a similar build or a standard 1052 I can compare against it would be much appreciated! Cheers

Too busy trying to sort your shit out without losing a finger

Have I fuck

...and the ones under the barrel... This way is correct yes?

I can tell you that the offset on the 750 is 37.5mm. Don't know about the 11. I would expect them to be different...

Looks like TL1000 or SRAD 750 to me No maybe not, wheel spindle looks wrong. Could be R1...

Tidy

Do they go in with the open end facing up towards the piston, like in the pic below? Pretty sure they do, but if I'm daft enough to take them out without noting the orientation then I'm daft enough to put them back wrong too...

Measuring with the weight of the bike on the fork is unreliable because it's dependent on bike weight, springs fitted, how much fuel is in the tank etc... It's better to measure fully extended length and subtract the desired sag based on unit stroke, then set spring rate & preload to achieve that sag. e.g. let's say a slabby fork is 745mm with 120mm stroke, you might want about 40mm sag with the rider seated so your target length would be 705mm What are you using these numbers for?

Probably no point. The only reason you might do it would be if the bike was unstable with the extra power. Then if the bandit arm is longer you might consider swapping it in. This is purely theoretical, I've got no idea if it actually is longer or if it would fit! I would leave the standard arm in, at least as a starting point.