what grade oil to put in??

i just had my zx7r motor rebuilt with over sized pistons etc and have run her in for 1000kms, just wondering whate grade oil should i use?? cant get in contact with the builder so might as well ask u guys cheers

As with a new motor, standard mineral grade is best - allows smoothing of the bore and is cheaper as it is in use for such a short term. Some will change it after the first 100 to ensure any initial metal is flushed out, then at the 1000, or just do 500 & 1000.

It's all about getting the imperfections off the bore and removing them from the oil. A synthetic oil can allow the rings to move over an imperfection and mis-shape the bore - Fully synthetic is not recommended until 8,000km.

you can get running in oil whitch is very basic mineral and i would run 15/40 to be safe when the motor has been beded in.brocks performance recomended me to run 0/20 in my bike in australian climate ( but im scared to) with a 3HP rise

Coles home brand

Motul 5100 semi-synth will be fine from here on in mate. Coles home-brand turns my chips brown.

you can get running in oil whitch is very basic mineral and i would run 15/40 to be safe when the motor has been beded in.brocks performance recomended me to run 0/20 in my bike in australian climate ( but im scared to) with a 3HP rise

they say to run FULL synthetic if you want to run thin oil ! if the motor is beded in full synthetic is a lot more refined under heat and keeps it's viscoserty 1000 km's is more than enough if the motor has been beded in properly

Yeah I put coles home brand oil in mine. Worked really good!
Really slowed down the rebound on my cheap pit bike forks!
No really I'm serious.
Oh you mean the engine....
I use a mineral monograde (not sure of brand...maybe penrite or something) it's for small engines like lawnmowers and stuff. Works really good. Run it for a couple hundred k's and dump it. Just make sure whatever you use doesn't have any friction modifiers.

cheers guys ended up putting in motul 5100 oil in it

Coles home brand

tight arse.....

Motul 5100 semi-synth will be fine from here on in mate. Coles home-brand turns my chips brown.

yeah with Gos...Motul is the go
(and its whats in the 12R )