2Zz- Bores

[scott5]

hi dose anyone know ware you can get 2zz-ge bores honed or bored out ?? and do they need to be re coated ?? if cant find anything everythings up for sale from my project

thanks scott

[Mooly]

I believe on the original TSport (non turbo) the bores were Nikasil coated. I would assume the turbo is similar. The engine was developed in cooperation with Yamaha and used there bike technology for the cylinder coatings... or so I believe. I know mine had a massive Yamaha name cast into the block.

The coatings there for a reason... maybe its to prevent the rings from overheating at very high RPM when friction losses increase.

[mr-p]

can you not buy the stones and get someone to do it? Or is it a case of finding someone to do it? Seems such a waste lol id have a good google search someone in the u s of a must have some info on this there are losts of turbo'd celicas out there id try an find a tuning company there and try and get some info, have you tried fensport? What do you want to do to the cylinders? If you just want them honed up a bit i doubt it will need re coating as you just improving the surface but if youre feboring then it will need a new lining

[scott5]

I believe on the original TSport (non turbo) the bores were Nikasil coated. I would assume the turbo is similar. The engine was developed in cooperation with Yamaha and used there bike technology for the cylinder coatings... or so I believe. I know mine had a massive Yamaha name cast into the block.

The coatings there for a reason... maybe its to prevent the rings from overheating at very high RPM when friction losses increase.

yeah i think all 2zz are nikasil coated yeah they wre desined with yamaha mate pitty bout the stupid coating such a hasle.

Iv been told the bores need bored out lol due to the cylinders bein out of tolerence and to get them re-coated its roughly 850.

yeah the coating is so you can run closer ring gaps with less friction and it dose help disperse heat. but honda V-tec are just normal bores no coating and they do fine sooo is ther really a need for it ?? i need to find out a prity pissed off TBH. dying to be the first of what i no to have a turbo t-sport in britain but his just gonna cost stupid money to do