How to tell them apart...injectors question
 

I just bought a pair of 850cc bored to 1200cc by RC with flow sheet with zero mile. Seller had injectors in stock rails, the hold down screws not budging and injectors look dirty so I am thinking they are stock 850cc.

is there a way of telling them apart from just looking by eyes? they should look like new correct?

TIA.

IIRC, RC Engineering usually marks them when they bore 'em out. However, if they were done by someone else, who knows.

Thanks. Will look for the marking once removed from rail.

What is best way to break the phillip head screws loose? liquid wrench?

Tap the screwdriver firmly with something metal while you turn it. It performs something like an impact wrench. I had the same problem getting my injectors out and it worked great.

Thanks all. Finally got those screws and injectors removed...

SNGX-1200 markings were on both injectors same as on flow sheet. I am happy...